CPU identification
Posted by Hungry_Charge2857@reddit | vintagecomputing | View on Reddit | 19 comments
Me again from a post like 10 minutes ago. Going through all these PC parts I acquired from an estate sale. I have no idea what this CPU is. The MoBo it came with is a Slot 1so obviously doesn't go with it. I tried typing the numbers into Google and got either modern CPUs or no matches. I've heard of a 486 this says 436 which may just be a red herring.
ThisGuyHasNoLife@reddit
It is either a 486DX2 or a 486SX2 with an SPEC of SX807 or higher.
Silent_Speaker_7519@reddit
It looks like a 486 DX33 but some 486 SX25 are similar also
pinko_zinko@reddit
Did they usually get heatsinks? Due to the heatsink I was thinking DX2 66.
Silent_Speaker_7519@reddit
Might be a sx25 overclocked to 33, that would need a heatsink, just a long shot this.
Silent_Speaker_7519@reddit
All the dx2 I have seen in ebay seem to have a notch on one corner. 486 dx2 66
Souta95@reddit
Its a 486 of some sort, but to know exactly what one would require removing the heatsink.
The 436 is likely a date code, week 36 of 1994.
Given the 1994 date and the heat sink, it's most likely a DX2 66 or DX2 50.
AEW_SuperFan@reddit
I bet it is a 33. It is lying around because someone upgraded to 66.
Souta95@reddit
Maybe, but I've never seen a 33 that had a heatsink.
WingedGundark@reddit
This. Of course, someone or some company of course could’ve installed a heatsink on any 486, but this is most likely a DX2 where these low profile heatsinks were very common.
TxM_2404@reddit
Yep, probably a 486DX2. From my experience 66MHz parts are most common.
MDKagent007@reddit
agreed...its going to be a 486 dx/2 as it was first introduced in 1992... https://en.m.wikipedia.org/wiki/Intel_DX2#:~:text=The%20Intel486%20DX2%2C%20rumored%20as,was%20first%20introduced%20in%201992.
2748seiceps@reddit
It's a 486 for sure. The heatsink will very likely be a 66 or faster.
If i had to put a guess in it would be a dx2-66. Oems loved to glue heat sinks on them and it was ubiquitous in it's peak. I've run into dozens with heat stinks glued on with no other info and they were all Intel dx2-66. Don't bother trying to take the thing off either. Even using the deep freezer I've never successfully removed one.
Dx4 and overdrive intels were branded as such with different sinks so it isn't them either.
dunker_-@reddit
Count the number of pins. Looks like a 486 to me. You can probably heat the heat sink with a blow dryer a bit and then slide it off.
Hungry_Charge2857@reddit (OP)
Never thought to count the pins. Thank you.
dunker_-@reddit
Looks close: https://www.colleconline.com/en/items/129887/informatique-composant-processeur-intel-80486sx
itstanktime@reddit
My money is on a dx2 66. The pin are for sure 486.
SysAdmin907@reddit
386... 3 rows of pins from the outside to inside on all 4 sides.
Souta95@reddit
It's definitely a 486 of some sort, not a 386. There's 17 pins across. A 386 would have 14 pins across.
Hungry_Charge2857@reddit (OP)
Gotta say I never thought to count the pins. Learn something new.