HP 250/255 G7 - DDR4 RAM Memory Upgrade Guide - 6BN96EA

Guide to upgrading or replacing the DDR4 RAM Memory in the HP 250/255 G7 laptop.
This is a fairly easy task to complete, requiring just a small Philips head screwdriver and plastic pry tool.
The laptops takes DDR4-2666 modules, such as these: amzn.to/2HgPqSA

[@RAWSKILLZ1223]

Great video man. Simple and to the point.

[@marcusstephan5189]

This video forgets to mention that the DVD drive has to be removed first. This is very important, otherwise the connector can be damaged!

[@BrueComputing]

Not mentioned as the model I was working on didn't have an optical drive. If yours does then you'll have to slide it out after removing the base screws and check for any underneath it along the edge of the chassis.

[@robertkrop3662]

​​@@BrueComputingThanks to video,much helps to me.I have ntb 255 G7 but with only4GB memory.Clasic HDD+DvD mechanic.Ntb slow working and I will change memory,but have only one socked for DDR.I can Hope for change memory update to 8GB or more.Greeting from Czech..😊

[@jasonvandevelde91]

Agreed. If you could add even a quick text warning to the bottom of the screen, it would help loads. Luckily, my optical drive came out undamaged, but the click sound was cringe-inducing😅. EXCELLENT video man. Thank you so much!

[@kevinpayton2797]

Memory is supposed to be one of the easiest components ever to replace. HP should have made this a LOT easier.. Thats insane!!! No one wants to remove the entire bottom panel of a laptop to add memory

[@BrueComputing]

Its pretty common now, unfortunately. Its not an overly difficult machine to remove the base of though.

[@ryanpellegrini]

err, it is a pretty easy operation and it is better than the laptops that you cant mod at all.

[@Pushing_Pixels]

I agree. That thing is pointlessly difficult. My Acer Aspire 7 has two user accessible bays; one for RAM and one for the hard drive. A single Phillips head screw each and you're in. Took me 5 minutes to double the RAM (and memory bandwidth) and swap the HDD out for an SSD.

[@electroid8119]

Years ago you had one screw and a little flap to lift ! Good old days

[@nyasdad3295]

Perfect, just what I was looking for.. cheers.

[@deliverance_6664]

Thank you so much from Morocco realy saved me couldnt find this pc type support anywhere

[@BrueComputing]

Glad I could help

[@frankescudero4523]

Good tutorial a question I can ask if you don't turn on the notebook but if you turn on the charging light.

[@PABLOCOooo]

THANK YOU !!!!!! regards from Santiago de Chile.

[@kookoon]

I've seen some laptop that have a SATA connector to the left of the battery, while this one doesn't seem to have it. I really need a HP 255 G7 with the SATA connector. How can I be sure my model has it?

[@ClaudiuB]

I see that nowadays they do the batteries built-in. But as you arrived at this point, can be battery be removed and replaced? or it's quite hard to take it out?

[@MannfredP1980]

This was very useful, thank you.

[@bahmak2003]

Hello! Is this have hardware virtualization enabled? Thanks

[@rickcadger2553]

Hi Great video. I'm hoping it'll help me out. I have the HP 250 G7 with Core i5. Please do you know if mine would take a RAM upgrade like this? And if so should I get a 8gig or 16gig module? Thanks.

[@emceefam5504]

Thanks. Where did you buy the tools? And what its name? Thanks

[@thetired.1465]

So everything is cool and stuff, but can you just put the rubber stripes back on, or do you have to use double sided tape or something like that?

[@olafmachatzek9972]

Thanks for your Video. It helps me to upgrade the Laptop. Great Job 😊

[@user-vu3hm4cu8c]

Thanks for opening laptop . 🙏💻

[@BrueComputing]

No worries!

[@jroddy1]

I have the exact model and it didn't have an extra slot to add another memory card. Why?

[@user-fl3qx3pe7m]

Hi! I have hp 255 G7 8gb ram ryzen3 6BNO9EA i want to put this ram to make 16gb ram i can? I think have different MHz

[@abdullahgholami9022]

what's different between 4 ram chips and 8 ram chips, I mean the black boxes..... and which one is better???? as you can see in this video he was using 2 different types of ram...

[@MsBlissboss]

I initially had 4GB of RAM but I recently added an additional 8GB and since then the keyboard and touch pad stops working until i put the laptop into sleep mode for a few seconds then they work fine again for a few minutes and go out again. ANy opinions ? I hate having to use a plug in keyboard and bluetooth mouse when i already have one built in

[@alanwilkes8276]

Purchased a refurbished one for about £70, excellent little nachine

[@BrueComputing]

Nice one!

[@itzhakbenmoha6660]

I read that you can't upgrade the ram to 16GB because something with the processor.... Is it right?

[@OpalRhea13]

My HP 250 G7 has a base of 4 RAM would i need the additional stick to be the same size or could I say have it be an 8?

[@malcomx5661]

I have g7 255 and i bought additional 8gb of ram. Same ddr and same frequency and same voltage. When i turn on laptop its all good and it shows 16gb but after few min laptop just freezes and restart itself. Any help?

[@glthebest]

Hello, I have the NOTEBOOK HP 250 G7 153B9LT 15.6 / I5-1035G1 / 4 / 1TB / DOS. And I want to add 8gb of RAM to it. That is, it already has 4gb to DDR4-2666 and I want to add another 8gb DDR4-2666 module, in total 12gb. The technical question is the following: Is this 12gb combination (4gb DDR4-2666 + 8gb DDR4-2666) going to work at the speed of 2666 or 2400? Because someone told me that this configuration of 4 + 8 in this notebook works at 2400 but if I put 8 + 8 it works at 2600. Could you confirm how fast the 4gb 2666 + 8gb 2666 combination works? 2666 or 2400? Thank you, I await your reply.

[@ViN-kr3ri]

Like Daniel Ebraham below I would also like to make sure I fit a compatible MM. The parts list number of the fitted HP MM is 937236-855, which is rated at 2666mhz. Does this mean it would be best to fit another 2666mhz MM rather than, say, a 2400mhz rated MM?

[@efthimis__]

Yes, otherwise your ram speed will run with 2400mhz, which is slower than the other one.

[@tahep3906]

I'm learning a lot from your videos and knowing my laptop (HP 15 db 1024db) better which is almost the same as this HP 255 G7 series, thanks a lot!

[@haniataklti]

Hi there, I have HP 250 G7 and I want to change the 4 ram to 16gb ram, can please help me to find the ram?

[@basilkearsley2657]

Hi, great video. One question, the eBuyer listing for the i5 processor (HP 250 G7) states it only has one memory slot. Is what you have shown different to that on eBuyer?

[@BrueComputing]

Do you mean where it says "Configuration 1 x 8GB"? That means it comes INSTALLED with a single DIMM, there should be two DIMM slots internally - that is the case on the HP 250 G6 models (Intel based) along with the HP 255 G7 I had for this video.

[@basilkearsley2657]

Brue Computing thanks for the info. This is really helpful

[@JulezJadore2012]

the i5 processor model only has one ram slot the ryzen version on the other hand has 2

[@mauricioespinoza3235]

Thanks so much, very helpful

[@BrueComputing]

Glad it helped!

[@joeyhoward4649]

Does it matter between the SO-Dimm or the SD-RAM for the HP 255 G7?

[@TheXquantumleap]

SODIIM phisicaly format of PCB for RAM in laptops, it is shorter and hhgher than stadard DIIM memory for PC computers. SD and microSDHC is memory card stick going in slot od card reader, it is slower tnan RAM add is usually used to copy photos from smartphone to laptop/PC

[@mr.global]

Hi! Does the HP have 255 G7 (7DF18EA) space and an HDD connector? Nowhere can I find this information :(

[@LuckyPig]

The HP 255 G7 (7DF18EA) as stated in the HP site has only the m.2 fully implemented but still has the physical bay for a 2.5" internal drive and an extra (available to all 255 g7 ryzen series) sata controller for either optical or HDD/SSD use (as you can see for yourself here : kzbin.info/www/bejne/iWfEZ6mDfpZ_rpo). What is missing is the cable/adaptor for it. Despair not, both are available from HP and 3rd party manufacturers and shouldn't cost much since it's just a ribbon with the appropriate plugs for either side(no extra electronics).

[@veritysleeps1420]

I want to do this but I’m just a bit nervous as I haven’t done anything like this before and don’t want to damage the laptop. Any tips?

[@workinalday4351]

Keep the video up on a screen playing while you go through it. It's not a big deal really! Having two nice flat head screw drivers to take the case apart helps, you put one in the case, and then slide the 2nd in the opening and move it along, and keep prying! It will just pop open as you go. If any part seems extra difficult go back look at the video and see if you are missing a hidden screw! These things are more durable than you think as far as working on them goes. You should be able to do it. Upgrading the memory in these things makes a world of difference, they really are slow and glitchy unless you have like 16 to 32 GB of ram in them. Anyway good luck!

[@dvirkaplan]

Tnx alot for the instructions

[@alanwilkes8276]

Yes, simple and to the point :)

[@nicolaspatrickson1660]

Hi, i have a question about the ram configuration The manual says that i cant have a 12gb ram configuration, is that correct? i have the 250g7 with 4gb dd4, i wanted to add 8gb but i dont know is this is possible, can i do it? or i can only put 4+4 and 8+8 ram configuration?

[@nggois6305]

8gb max 2 x 4gb ddr4

[@berndoweger7559]

good explanation, thanks

[@BrueComputing]

Glad it was helpful!

[@deathcube2006]

Is the screen upgreadable to fullhd ips? I had a lenovo that came with tn 720p panel and changed it to 1080p ips. Maybe you could take a look if possible

[@BrueComputing]

If you can find a panel with the same connector type and positioning and mounting method then sure, but HP don't list one in the service manual.

[@labourinspection4843]

Thank you a lot!

[@BrueComputing]

You're welcome!

[@SvetPecanja]

Is the maximum for that laptop 16gb of ram or I can put more?

[@BrueComputing]

Officially, the maximum supported is 2 x 8GB: amzn.to/2ruikcB

[@hamzapatel6192]

Do single rank and dual rank matter

[@R1tsu.]

hi, i have an hp 250 g7 with intel core i3 8130u and 8 gb ram, is this one expandable, and what ram do i need, i mean model

[@BrueComputing]

Yes, you would want this: amzn.to/3fBYSgI

[@nikolasdouras442]

hey my 250 g7 has only 4gb of ram. Will there be a problem if i fit an 8gb ram in the second ram slot and have 12gb (4+8) in total?

[@BrueComputing]

Should work fine if the same spec in terms of speed, latency, etc.

[@GiorgosNSR]

does it matter is the new memory module is of different brand than the HP one installed when new?

[@BrueComputing]

Should work so long as it is the same spec.

[@arneishasadler1136]

My laptop only has one slot. Also it's insert with the label on the 4 black squares facedown. And Why at 5:46 in the video the 2nd memory card disappeared?

[@BrueComputing]

If it has one-slot it is probably a lower end model with something like an AMD A6 APU and will be slightly different. It disappears in the video because I was actually just doing an SSD upgrade for a customer and just fitted a spare memory module for demonstration purposes in the video.

[@pattontheapplegamer5437]

Would this be good for photo editing (basic) I have a MacBook Air 2017 but the screen is awful and I was always told Apple Macs are only computers that you can edit photos, but then I saw someone use a photo editing app on a pc and now I’m confused haha, also new MacBooks don’t have a sd card slot :/

[@BrueComputing]

Of course you can edit photos on PC. The screen on this isn't anything special though, only a TN panel on the model I had so not amazing contrast or colour accuracy.

[@daviddrahllensa4165]

Thanks man !

[@BrueComputing]

Happy to help

[@5wholepizzas284]

What is the maximum memory supported by the computer ? since i contacted hp and they say it's 8 while online it says it's 16 or 32

[@borrrden]

I think I have some insight here. Some of the older 255 G7 models have only one memory slot. Now that’s some BS. With only one slot you can only have 8. Now I’ll have to return the memory I just bought ughhh.

[@redcloud4741]

Can I replace the current storage device with a larger one? Can I add a storage device without removing the existing one? Can I use multiple types of storage devices like HDD or SSD or does this machine use M.2?

[@BrueComputing]

Yes, I have a video covering this here: kzbin.info/www/bejne/iWfEZ6mDfpZ_rpo Typically though the HP 250/255 G7 only support the type of storage they are supplied with - models with a 2.5" SATA drive only most likely won't have the M.2 connector on the mainboard. Likewise, models supplied with an M.2 drive (like mine) will need the SATA cable and board added in, which is quite expensive to buy from HP.

[@MrTimjm009]

so if I understand correctly the M.2 connector is for the ssd drive like the video . ? mine came with a hdd drive installed , 1 memory module slot on the board . I wanted to add the ssd drive which is next to the battery . No slot though ? So Im sunk ??

[@philipjhill]

Presume the machine boots up ok and recognises the extra RAM automatically? Did you have to buy new feet to replace those removed ?

[@BrueComputing]

Yes, should recognise it with no other changes. I just stuck the original feet back on.

[@stevemccartney8151]

Hi I've just bought one of these. I've been looking at the quickspecs document and it says maximum ram is 8gb yet it has two slots. Is that a max per slot or am I missing something? I have an 8gb DDR4 stick from a dead laptop that I'd like to install but I don't want to mess something up. I'm pretty new to computer hardware.

[@Manitu121]

I'm watching the video to find out exactly that. Unfortunately I haven't found an answer yet.

[@imajorsixnine6392]

@@Manitu121 do u guys know the answer now?

[@edkent6872]

Hi. My Computer only has a single slot. Do you know of any single chip 16 GB that would fit? Thank you

[@MrTimjm009]

check the product spec online or the manual it will tell you if you can go from a single 4 or 8 or 16 module

[@Soullture]

Ed Kent f

[@ovhx]

I put 2 new ram sticks that can do 3200 mhz but its still running at 2400???? Help?

[@1000THEDOVYDAS]

it depends on your CPU, Amd Ryzen 3000 series runs only at 2400 max

[@brantbush4891]

Thanks for the video. I'm here trying to figure out how to get the panel out. This laptop looks like an amalgamation of leftover parts made into a cheap laptop.

[@Rincewindcl]

It looks much better in person.

[@cedricoz7086]

I'm also having trouble getting rid of the panel, it's as if it's designed to keep you from opening it ever

[@brantbush4739]

@@cedricoz7086 My employer has been using them for about a year and we all universally hate them. They're dim, low processing power, and designed to be as hard to repair as possible.

[@nevs4181]

Hi, although this is obviously not a gaming laptop, would it nevertheless slightly improve overall fps in games and overall quality if i put other 8 gb of ram

[@BrueComputing]

Going to dual channel memory will improve gaming performance, yes.

[@nevs4181]

@@BrueComputing thanks, is that only thing worth upgrading on laptop?

[@BrueComputing]

@@nevs4181 If it doesn't already have one I'd highly recommend upgrading to an SSD.

[@vasilisdemergis3494]

Hi, i need your help . I have a laptop HP 255 G7 with a AMD A9-9425 APU Processor ( 3.1 GHz base frequency, up to 3.7 GHz burst frequency MB cache and 2 cores ) .It has a one (1) 4 GB, "1866 MHz SODIMM memory module . What would be the right part to upgrade memory to 8 GB . I would also appreciate if you could provide me with a link on Amazon where i could purchase such a module . Thank you in advance .

[@BrueComputing]

One of these: amzn.to/3btcWHe You can buy a higher speed module, it'll just run at DDR4-1866 speed.

[@vasilisdemergis3494]

Thank you very much for your quick response , much appreciated !!!

[@umutyilmaz5614]

Is this process under warranty, what damage to the warranty may be

[@BrueComputing]

In the case of my machine I did not break any warranty seals, but if disassembling a machine I would always assume that the warranty MAY be voided. Obviously in the case of a warranty issue you would want to return the system to its original configuration, and any upgraded parts you fitted would not be covered. I always recommend using plastic pry tools to avoid damage to the plastics, keep track of what screws came from what location, and be calm and methodical to limit the chance of any issues.

[@jaywangaatv7294]

Plesae does all Hp 250 g7 laptops use ddr4 Ram cause my pc is 4 gb ram and i do not know if its a ddr4 or ddr3

[@abdullahgholami9022]

What's your notebook ProdID ?

[@BrueComputing]

Whats the exact model number and I'll double check.

[@hamzapatel6192]

can i add more memory i have hp 250 g7 i5 processor bought from ebuyer

[@BrueComputing]

Yes, it has 2 DIMM slots. Generally they ship with a single module installed.

[@hamzapatel6192]

@@BrueComputing I dont know if I can add 32gb max or 16gb max also can i just add 16gb and 8gb

[@HuntaKiller91]

Will u do some benches on this?

[@BrueComputing]

I have some tests using an Acer Aspire 3 with the same Ryzen 3 2200U processor. Now that AMD have released some new drivers for the Radeon VEGA 3 graphics I'll be running more tests on it.

[@stevejones7636]

I have one of these and it's so horribly slow I don't know much about laptops, it's so slow, mine was bought with only 4gig ram would I have to get 2 8gig ram cards? And how much faster would it make the machine or is it even worth it

[@BrueComputing]

What processor does yours have, and is it equipped with a hard drive or SSD?

[@stevejones7636]

Screen size:39.6 cm (15.6") diagonal, HD (1366 x 768), anti-glare, 220 nits, 45% NTSC Processor :AMD Athlon™ 3020e (1.2 GHz base clock, up to 2.6 GHz max boost clock, 4 MB L3 cache, 2 cores) Memory: 4 GB DDR4-2400 SDRAM (1 x 4 GB) Storage: 1 TB 5400 RPM 2.5-inch SATA Hard Drive Graphics: AMD Radeon™ Graphics Operating system: Windows 10 Home Single This is the description from when I got it, like I said I don't know much about hardware and stuff, any help would be appreciated

[@Melanchol_69]

Awesome video for this model, but mine seems to be a little different, the memory was souldered to the board with most of the components and I didn't want to damage it so no upgrades for me :(

[@BrueComputing]

Thanks for the info! What was the full model number?

[@Melanchol_69]

@@BrueComputing It was an HP 250 G7 Notebook, I purchased it refurbished but the HP support website says it's not user accessible/upgradable

[@BrueComputing]

There will be a longer model number, like ab123cd normally. That gives you the exact spec.

[@MrsJoks]

Can I change the cpu/gpu?

[@abdullahgholami9022]

I think u can change ryzen 3 2200u with vega 3 to ryzen 5 3500u with vega 8 if u find that apu....

[@danielebrahim7671]

Hi, I ordered this memory before seeing your video - can you confirm if this will be okay. Crucial CT8G4SFS824A 8 GB (DDR4, 2400 MT/s, PC4-19200, Single Rank x8, SODIMM, 260-Pin) Memory. It currently has 8GB memory. I want to double to 16GB. Secondly how much do you charge to fit, if I don't feel like doing it myself.

[@TheXquantumleap]

If in your laptop has installed 2400 ten your 2400 module will be good

[@juancarlock]

I put a 16 gb memory and doest work.......any idea????

[@sweiland75]

Did you add the correct type of RAM sticks? Did you install 2x8 GB sticks?

[@harshavardhana80]

How to increase VRAM IN HP NOTEBOOK 250 G7

[@abdullahgholami9022]

buy another Ram... The Vram will be upgrade automatically ...

[@pyxart]

Is it a good idea to add 8 GB more in the second free slot and keep the already installed 4 GB in the first slot? Thanks

[@electroid8119]

You can have odd pairings but it's not advisable. You would be better buying two banks of identical ram either 2 x4gb or 2 x 8gb. You also eliminate the more problematic issue of different mhz speeds of ram.

[@MsBlissboss]

mine initially came with 4GB and since i added 8GB of ram in the extra slot my keyboard and touchpad stops working until the pc goes in and out of sleep mode before they start working again

[@BharatExplored]

What's the port just beside the hard drive? For whats it's used? imgur.com/a/B4N13qj

[@tomyabbo8]

thats for your dvd drive

[@rashidjordaan777]

will this work with 4gb version

[@BrueComputing]

Yes. May be worth opening it up first and checking how many DIMM slots it has.

[@wauroware]

Does it support 32gb?

[@BrueComputing]

Officially only 16GB, but 2 x 16GB modules may work.

[@MrTimjm009]

chech online specs or manual . If it says 16 max then that is either 1 16 gb module if you have 1 slot or 2 x 8 gb modules if you got 2 . depends what the spec says, best just ask HP company

[@gerds.9956]

👍🏻👍🏻👍🏻

[@chrestos.sv1gap]

I suppose HP means RAM upgrade is not for everyone. Right? "Both slots are customer non-accessible / non-upgradeable" "Version 8 - July 3, 2019 Page 6" h20195.www2.hp.com/v2/getpdf.aspx/c06182356.pdf

[@BrueComputing]

As there is no access hatch and the system has to be disassembled to get to the slots, HP consider it customer non-upgradeable.

[@Peter-gi1zf]

Great video! In the QuickSpecs for the HP 255 G7 I found this information: Maximum Memory 8 GB DDR4-2400 SDRAM10 8 GB DDR4-1866 SDRAM10 Memory 8 GB DDR4-2400 SDRAM (1 x 8 GB) 8 GB DDR4-2400 SDRAM (2 x 4 GB) 4 GB DDR4-2400 SDRAM (1 x 4 GB) 8 GB DDR4-1866 SDRAM (1 x 8 GB) 4 GB DDR4-1866 SDRAM (1 x 4 GB) 8 GB DDR4-1866 SDRAM (2 X 4 GB) According to this table you have 3 options: 1 x 8 GB (Maximum memory in one slot), or 2 x 4 GB (Maximum memory if you want to use both slots), or 1 x 4 GB (1 slot used. You can still add 4 GB in the other slot) My question is: does it really work with 16 GB (2 x 8 GB)? Will it start and accept 16 GB, Is it stable?

[@BrueComputing]

Yes, should work fine.

[@sytrone314]

@@BrueComputing can be dual channel ?

[@francescoparrella8560]

My HP 255 G7 (PROD ID:7DB74EA) has only 4GB of RAM. Can I upgrade to 8 or even 16 GB of RAM? 16 would be a dream ahahah

[@BrueComputing]

Yes, you could fit 2 x 8GB modules, like these: amzn.to/2zCPY3d

[@user-fl3qx3pe7m]

Laptop have ram 2400 MHz and you put 2666 MHz is that a problem?

[@BrueComputing]

HP actually ship all models of the HP 250 and 255 G7 with DDR4-2666 modules installed - either part number 937236-855 (8GB) or L10598-855 (4GB). The speed it runs at is dictated by the maximum memory speed the processor supports - the Ryzen 3 3200U supports a maximum speed of DDR4-2400, so the memory runs at that. The module I recommend is of the same specification as the one supplied with the machine.

[@user-fl3qx3pe7m]

@@BrueComputing my hp have ryzen 3 2200 u you say ryzen 3 3200u

[@dontasciime]

Shameful that manufacturers have gone this route to obfuscate the adding of extra ram to a crappy basic 4gb model by removing the bay also this one skimpy on hdd adding as well

[@cualfuneri2510]

i agree with you, i purchased this laptop then i realized how difficult it would be to upgrade ram. my question is: why would manufacturers do that?

[@Dragonballgrz]

But wasnt the ram maxed out for 8 gb ?

[@BrueComputing]

No, you can fit 2 x 8GB modules for 16GB.

[@Dragonballgrz]

Brue Computing But it is important if the System supports 16 gb of Ram.

[@csqgb9801]

5:15 take off C side

[@ivanwhite4715]

Excuse me, but don't take off, the old ram, thank you

[@andrewtheboss7806]

Pure shit PC... A step back from the old school PC, where all components were easy to access...

[@piolas2155]

entiendi tu opinion pa pero para mi eso es oro

[@piolas2155]

este es un video para ayudar a otras personas a añadir mas ram a su portatil y tu vienes a decir que el portatil vale verga

[@colbymullenix9140]

Would you say that 3200MHz is a bit much for this model to handle? I got myself a pair of DDR4-3200 8GB RAM cards for my HP 255 G7 Notebook PC (Ryzen), and was about to install them onto it. I believe that they’ll under lock down to 2666MHz once installed, but I was wondering if I could ask for a second opinion

[@BrueComputing]

I believe they will run at 2666MHz or 2400MHz depending on the exact model of 250/255 G7. They should work fine though and the cost difference is minimal.

[@colbymullenix9140]

@@BrueComputing thanks for the feedback I appreciate it. So far I’ve just installed the ram into my laptop and started up now

[@SynthwaveCityRadio]

Hi Colby. Did your laptop accept the 16GB of Ram at 3200? Thanks!

[@colbymullenix9140]

@@SynthwaveCityRadio why yes it did, and it runs much better for it.

[@gl522correo4]

Hello, I have the NOTEBOOK HP 250 G7 153B9LT 15.6 / I5-1035G1 / 4 / 1TB / DOS. And I want to add 8gb of RAM to it. That is, it already has 4gb to DDR4-2666 and I want to add another 8gb DDR4-2666 module, in total 12gb. The technical question is the following: Is this 12gb combination (4gb DDR4-2666 + 8gb DDR4-2666) going to work at the speed of 2666 or 2400? Because someone told me that this configuration of 4 + 8 in this notebook works at 2400 but if I put 8 + 8 it works at 2600. Could you confirm how fast the 4gb 2666 + 8gb 2666 combination works? 2666 or 2400? Thank you, I await your reply.

[@Jenura01]

Hi there! I was just on the HP support site (Feb 2023), and this is what they recommend: "HP recommends purchasing the same type of memory (same size, speed, and manufacturer) for each slot. For the best performance, purchase the fastest memory the motherboard supports. CAUTION: Some motherboards are not able to configure memory modules with different manufacturers, or different CAS or density values. To ensure your memory is compatible, make sure all SO-DIMMs have the same part number.". In terms of how much to put in each slot, here is what they say... "SO-DIMM memory and requirements: Notebooks use SO-DIMMs (Small outline dual in-line memory modules). They are smaller and thinner than other DIMMs, so are used when there is less space within a chassis. SO-DIMM modules for HP computers must meet the following requirements: The number of pins on the SO-DIMM must match the socket type. SO-DIMM memory requires a 200-pin slot. DDR2 SO-DIMMs are not compatible with DDR1 DIMM and DDR2 DIMM memory modules. DDR3 SO-DIMMs are not compatible with DDR1 or DDR2 and use a 204 pin slot. With a computer running at a system bus of 533 MHz or 667 MHz, use a PC2-4200 (DDR2 DIMM 533) type" (====> and yes, this is the current support info on the website, but looks like they haven't updated it in a while!!) Lastly they add: "If possible, make sure all memory modules in your configuration are from the same manufacturer and have the same part number" BECAUSE "If memory speeds are mixed, the system performs at the lower memory speed". SOOOOOO, your combo should should come out to 2666, according to the above. Memory is soooo cheap nowadays, I would put in the max amount possible. PS. I just looked up your notebook, and it said the slots are inaccessible?