great job awesome love these old computer hard ware

pliers, blades, sticks... stop using them! cut syringe needle. all you need is a set of these needles of different diameters.

you gave me a Flash back of the pre 2000 Compaq Proliant 5000 with 4 Pentium Pro 1M CPU's...

Pentium Pro, the little architecture that could. It may have been criticised at the time it was first released (mostly because poeple didn't understand the target audience of the cpu) but all modern Intel CPUs still fit comfortably in the p6 Pentium Pro family. 30 years for a cpu architecture is very impressive. I do wonder, if AMD gets a few more Punches in, will Intel have to try something new again. I wouldn't trust soldering broken pins like that if the socket wasn't zif. The force needed to insert and remove a cpu from a non zif socket would surely break the solder. The really bad thing about the f00f bug is that it could take down protected mode operating systems by completely crashing the cpu and it couldn't respond to interrupts like the Ctrl-Alt-Del interrupt from the keyboard controller. On the PPro the instruction sequence no longer stops processing of interrupts. It just generaates an ivalid instruction execption as intended and crash the thread of execution. In Dos it just hung because dos doesn't have a useful default exception handler for the crash foof causes. Ctrl-c might even get back to the dos prompt from this hung state

I can suggest heating up the pins before you try to make them straight, it will make the metal softer and the pins will not break :) this work for me

Back in the day when worked in the computer shop customers would do this time to time when upgrading their cpus. As a last ditch effort to fix it for them we’d stick a appropriate gauge wire into the CPU socket holes where there were missing pins and added a small curl to the top of the wire to give it a bit of spring tension. If you do it right it works about 80% of the time as long as the original pad is left on the CPU. Have you tried watch makers tools? They are kinda a godsend for this kind of work.

Great job on the repair and BIOS upgrade! I was surprised how weak those pins were, but I'm glad you could get this CPU working again. I had a Pentium Pro for a while, it was a 180MHz model (I believe 256K cache), which I immediately overclocked to 200MHz since it came with a big heatsink (much larger than the one on yours). I even bodged a larger fan on, which dropped the temperature a little, but it ran stably for a few years, I never had any problems. Looking back, I'm not sure how much of a real upgrade it was, since I came from a Pentium MMX 166MHz. It's possible those MMX instructions may have made it faster than the Pentium Pro in some games.

Jeez Sata3 speed L1 cache, we take a few things for granted nowadays…

I used to work for a Geek Squad warranty fulfillment center during the days of the Athlon 64. Our parts department was so careless, they would send CPUs to the repair line in loose plastic bags with no protective foam and no anti-static bag. They were probably stored that way in a bin I guess. By the time they made it to the repair line, the pins were all bent to hell and I really had no option except to waste 20 minutes straightening them out with a pocket knife. And I had to replace a lot of those Athlons, as I recall they had some problem with the onboard memory controller. Lucky I never had to re-attach any pins like this!

I remember using a fine size mechanical pencil (without the lead obviously) to easily straighten the pins on chips like these.

That was incredible

i've had good luck fixing pins with a mechanical pencil and using it as a pin straightener. Going slowly and gently bending pins and straightening them slowly.

In the past, I've found the best tool for bent pins is a mechanical pencil, and to make sure the pins have been warmed up first to minimize cracking. Not too hot to melt the mechanical pencil, but like, hair dryer warm.

Those older cpu's was nice. Big fat pins to solder broken one's back on.

What a ride. Thanks for making this video and having the courage to fix those pins. Your patience is legendary!

I Wonder For Update Intel se440bx Bios To Lastet Version We Have Same Setps LikeVS440FX?

If you type in "sys c: a:" it will always copy the system files from "C" to "A" regardless of the drive or directory you're in.

Do you ever "load setup defaults" after flashing a new BIOS? I remember that being a recommended procedure due to possible differences in the layout of saved user settings between BIOS revisions.

Booting Linux will tell you what bugs are present.

i use "Aderend Hülsen" (German, sry dont know the English word) Is really easy to bend back with it. May someone can Translate in English :P

DO NOT connect an Asus motherboard header to non-Asus brackets and vice-versa. You will fry the cable, at a minimum.

My Brother has a dual pentium pro board that I'm trying to get him to set up again. BTW, He has one of those 1M chips that I gave him about 20 years ago that is suffering from the same problem.

Si tuvieras una cámara en bacilo haces que los pines que tengan micro fisuras haces que se soldadura y corres menos riesgos de que se rompan los tienes del CPU

@8:55 That's not an EMS expansion card, those four big chips on the Left are 4Mbit Flash ROMs, the one in the middle is a 256k EEPROM (maybe a BIOS for the card?), no RAM at all on that card. I can only assume it's some kind of software-in-ROM type thing.

I also have two pieces, but I would need two more pieces so that the sockets in my Dell are not unnecessarily empty. Running Win98 on Pentagram Pro is a waste of its potential, considering that it still contains 16bit code, where PPro gives lousy results. Its advantages are elsewhere.

I don't think C3 is the correct instruction to use. RET is how you return from a function call -- but DOS hasn't set up a return address on the stack for you. Try B4 4C CD 21 instead. This is MOV AH,4C; INT 21 which makes a system call to DOS asking it to end this program.

Those players are great legit tool for straightening cpu pins. I used many improvised tools for straightening pins on cpu, like blades, credit cards etc., the best results I got was with techincal mechanical pencil with which use 0.5 mm graphite inserts, like Staedtler graphite mechanical pencil or other brand same product, I don't know how you call those in English... Anyways the pencil is long enough to be good lever, so you get to make very short or long moves slowly and get pins back at originial position...long industrial syringe needle can be good, I mean any kind of "long enough very thin pipe like object" could do the job imo, it's just those technical mechanical pencils are like they are made for the job 🙂 🤷‍♂️

Straight gold is the best gold.

The PPro 1M are also stable at 3.5 x 66MHz = 233MHz (if your board supports 3.5x). I have two of these PPro 1M running on a Tyan S1662 board at 233MHz. :)

I use syringe needles for straightening pins - it is much more convenient than a toothpick: - find the needle of the right size (one that just slips over the pin); - clip off the tip (do not mash it); - put the needle over the pin and bend it back. For thick pins of older CPUs a mechanical pencil can be used instead of needle.

To straighten bent pins I use a hypodermic needle with the tip filed down, I simply insert the needle allowing the pin to slide through and then once it is fully in I gently straighten it, it is like using a hollow pipe to straighten an iron bar. 14:30 NO!!!! Never use the solder wire directly to solder the base of the pin!!! if you do, the flux will turn the whole pin into a ball of solder and it will be useless. Use the cutter and under the microscope, cut off a tiny microscopic sliver of solder, then place that sliver on the base of the pin inside the flux, when you apply the soldering iron, only that tiny sliver will be soldered to the base, by the way, I have a sharp tip especially for this job, sharp as a needle.

You might know this, but the 1mb PPro was not flat and needed a special heatsink to match. I sanded one down years ago but didn't have a way at the time to check any difference in temperature.

13:33 Dude the whole base of that pin is moving inside the CPU structure!! I wonder why? is the pin like recessed into the CPU maybe 🤔

Now that's what I call a save! I think the BIOS could have been flashed normally by booting from the floppy. The jumper being called BIOS Recovery leads me to believe it's only meant as a safeguard in case the board doesn't boot normally due to BIOS corruption. In most benchmarks, the Pro 233 completely crushes the 233 MMX and it's very close in performance to the Pentium ii 233. If only I had a Pentium Pro 200 instead of a sad Pentium 166 without MMX when I was young...

An interesting note about the pentium pro line of CPU's is that they are true 32 bit but with a 16 bit translation layer in a time where consumer cpus and windows itself were 16 bit. This CPU should work better with Windows NT or Unix/Linux.

Amazing work and video! One question: Pentium Pro heatsink and cooler seems impossible to find...what alternatives/compatible we have for this issue?

Wow you fixed that CPU. Loved watching you revive this old cpu

I have never seen a black Pentium Pro. And your soldering skills are very impressive. Great job.

Excellent repair on that CPU! The Pentium Pro has a special place in my heart as it was a CPU I had always wanted to own but never did back then due to cost. I did have a friend who had a Pentium Pro in a Gateway 2000 PC that had that same mainboard in it. He had acquired that machine through less than savory ways though and I lost touch with him back in 1999 after he moved out to the west coast of the US.

use needle 0.8 or similar, much easy to align pins

Impressive stuff. I basically just write-off CPUs with any kind of deranged pins, the amount of frustration from such delicate work isn't worth it. Really cool to see what successful CPU repair _can_ look like, lol. I'll never experience the joy myself, but can appreciate seeing others triumph.

Wow great fix for a great CPU! Am I the only one that got dizzy with the fast movements under the microscope?

Fantastic. Microscope needed now.

Hearing your vocal expressions of joy upon success never gets old. 😄 No idea why you were apprehensive of this repair, it literally went exactly as I expected. But then again, I'm an optimist, haha. Those pins cannot be pure gold, they behave almost like an aluminium alloy. Looks like Intel was trying to reduce costs on those chips, as the huge cache probably made them expensive enough already. On a side note, Knipex are of course the best (not just the flat jaw ones) and these pins were probably all beyond saving so it didn't make a difference here, but generally speaking I believe the toothpick method may be more gentle and yield better results in some cases (esp. pins on pads), as it allows you to apply counter leverage and thereby better focus on the area that force needs to be applied to. Anyway, it's always heartwarming to see another historic piece of computing tech back in action, I'm really looking forward to seeing more content about it in the future! On another tangent, I'd like to rant about the fact that BIOS flashing can STILL be a super irritating process, specifically if it is necessary to flash a board so that it actually supports the CPU that you bought for it (e.g. a B650 board so that it supports a Ryzen 9000 series CPU). At least these days, you can usually flash it without obtaining and installing a supported older CPU first, but the process is usually not sufficiently well documented and often fails without apparent reason. I pity the person that doesn't have a bag of old USB Sticks to try until one is found that works. End of rant! 😉

5:50 On that 850, the pins have small heads so you should be able to solder them back on, it's just that you'll have to carefully soldermask that top copper layer. See if that top layer is connected to a GND pin, or just scratch off some soldermask, then test continuity to it after soldering. Maybe even sand it back further for more isolation/clearance.

Hello Mr pin straightener!

at first i really liked that heatsink+fan combo but after you showed the thermal camera footage it's obvious that it kinda sucks. it seems like the airflow doesn't get passed over the edge fins.

Would be nice to compare this penium pro with other pentium 1 cpus mmx/non mmx

I think using low melting solder for SMD would be a good choice, instead of regular soldering wire.

Stalker 2 is out !!!