Testing even more 387DX Floating Point Units. Overclocked to the MAX and Benched with a 486DLC.

[@johnprescott6614]

another interesting video, thank you

[@bradgoren5710]

Btw , one 3rd party vendor started and a few more followed selling smd versions , lcc (winged leads ) or plcc ( plastic leaded chip carriers , socketed ) and mounted either on a dx pin socketed board to capture wider market slightly cheaper by cobbling together solutions It was perfectly viable

[@bradgoren5710]

The Ulsi chip marked 9435 is the latest revision. 35th week of 1994 The rest is the plant location and ( litho) mask # Almost all chips follow this pattern as a reference just like lot codes today . An audit trail Than you for the Fun video . thanks for the throwback

[@atheatos]

I am aware of week/year codes on chips... it is funny how I missed this point on the video. Now 9507 is the latest one the and it is not the fastest. In total we have: 9507AK1 (The one I used on most on my videos) 9419A3D (The new to my collection and a bit faster, small difference) 9345A3D (Same as the one above) 9250PA (The CPU galaxy one, the slowest with significant difference?) So the week/ year it is partially helpful here. The most interesting stuff is the maybe the code after that AK1, A3D, PA. Yeah normally this is the plant location or something, but it is interesting that only the ones with A3D performed the same. If I ever get more of this I will check again.

[@Neksus-M06]

You are answering a lot of questions I have. And even more. Cool channel :)

[@atheatos]

My pleasure :)

[@devonandersson300]

14:52 What exotic coprocessor(s) are you missing? Wish I'd have the knowledge and the soldering skills to do stuff like than. Amazing how you always find new ways to optimize and push the performance higher. Asynchronous function? Good cliffhanger! #386quakerace (lol)

[@atheatos]

I mentioned that I miss in my first video. It is the Chips Super Math, The Intel RapidCad, and some IITs and ULSIs with clock doubler! I do not think I will ever manage to get these. Only RapidCad is available but quite expensive. Yeah some times I get performance out of nowhere, and I surprise myself too :p Cliffhangers are nice, I need more subs :p

[@Dr_Mario2007]

I am surprised that the Intel x87 FPU used here was able to hit 50 MHz. I wonder how warm it got when running very fast.

[@atheatos]

These chips run relative cool. So these is not a problem here even with overclocking. The 486DLC warms up a bit so I have a heat sink and a fan. BTW on one of my other videos I have overclocked the intel 386DX-33 to 51.2 :) Ok only one 386DX sample overclocked that high.

[@wskinnyodden]

And Weitek? When?

[@atheatos]

I do not have one, probably not any time soon. These are too expensive and rare, also in the end while faster these have very limited support, so I do not have a priority to get one now.

[@Erebus-PCFX]

I have bought a Soyo SY-5EHM V1.1 MB from a greek seller, was this you??

[@atheatos]

No but Soyo SY-5EHM was the first M/B I personally selected / bought back in the day. I am actually in Austria

[@Erebus-PCFX]

@@atheatos Oooh, okay! I actually watched your video on overclocking a Pentium MMX to 420MHz and you presented your three first motherboards and when you brought up the Soyo one (it looks exactly like mine) It made *click* (I was also reassured when you said it was a good investment). Do you have any tips and trick about this MB that could improve performance and??or reliability? I plan to use a K5 PR150 or a Rise MP6 PR266 with a Number9 Revolution IV 32MB AGP.

[@atheatos]

I have a video on the Asus P5A too, an Ali SS7 M/B. Now I have payed a lot with MVP3 M/Bs before the same way. However this was more that 2 years ago, I do not remember much, but I have notes. There are quite a few register optimizations there too, for memory and vga speed. I will come back to this topic at some point with a video. I just a bit too busy these days.

[@Erebus-PCFX]

@@atheatos Thank you very much for your answer I hope to make great use of this neat motherboard! Good night.