a few intel dx-66s have had i66 engraved on the bottom. I d bet it's one of these.

GPA wrote:

a few intel dx-66s have had i66 engraved on the bottom. I d bet it's one of these.

DX-66? I thought the 50 was the fastest DX. I firmly believe this to be an DX2-66 and not DX.
I could be wrong though...

brostenen wrote:

GPA wrote:

a few intel dx-66s have had i66 engraved on the bottom. I d bet it's one of these.

DX-66? I thought the 50 was the fastest DX. I firmly believe this to be an DX2-66 and not DX.
I could be wrong though...

No, it's definitely a DX2-66. I don't know which version though.
Have you checked CPU-World to look for pics of similar chips?

Yeah.... It really confuses me. As I can't really see if the size of the golden plate means WB or WT cache.
It looks a bit like something in between, I am just not shure what to make out of it.

Looking at the pictures on amoretro, the plates size on my DX2 is somewere between WT and WB.
http://www.amoretro.de/2012/01/intel-486-dx2- … write_back.html

This is the closest I can get to it....

http://hw-museum.cz/view-cpu.php?cpuID=47

This is the place to ask if you want a CPU identified:
http://www.cpu-world.com/forum/viewforum.php?f=12

I have a SX911 &E5V1X that is very similar to that one. Mine says: 8514246FCB/A4/GR 24. Also marked i66, but the diagonal golden trace/line/whatever that marks pin 1 is a bit shorter. The plate size is the same.

stamasd wrote:

This is the place to ask if you want a CPU identified:
http://www.cpu-world.com/forum/viewforum.php?f=12

^this.

It's also a good place to buy CPUs, I got some lovely chips from there 😀

Hmmm... Took my chances regarding this CPU.
I firstly installed it as a standard dx2-66 cpu, and the board would not read any bootable media.
When running as a P24D, it would not go past the mem count.

I guess this is a defect standard Dx2.

brostenen wrote:

This is the closest I can get to it....

http://hw-museum.cz/view-cpu.php?cpuID=47

I only see its a 5volt version.. The 5volt version uses a bigger gold plate on the back.. The 3.3 volt version have a smaller gold plate on the back..
Processors with heatsink attached, mostly are older cpus.. Newer ones mostly used re-moveable
heat sinks or heatsinks with attached fan.
Also think its a write Through one, cause Write back versions came later on the market. In 1992 there where not Write back cpus available.
So your cpu can be used on 5 volt style motherboards without an VRM installed.

brostenen wrote:

DX-66? I thought the 50 was the fastest DX. I firmly believe this to be an DX2-66 and not DX.
I could be wrong though...

Apologies for the typo. Of course, i meant DX2.

GPA wrote:

brostenen wrote:

DX-66? I thought the 50 was the fastest DX. I firmly believe this to be an DX2-66 and not DX.
I could be wrong though...

Apologies for the typo. Of course, i meant DX2.

No Probs... 😀

When thinking a bit, I think I have tried to get this CPU running some 6 months ago without result.
Hence me, keeping it in the closet and forgetting that I ever did that.

The question now... Can a WT 486dx2 take damage when being run as an WB chip?
If so. Then I have most likely killed it in the process of figuring out what the CPU is.

brostenen wrote:

The question now... Can a WT 486dx2 take damage when being run as an WB chip?
If so. Then I have most likely killed it in the process of figuring out what the CPU is.

i seriously doubt so... but sometimes they just die. Nothing lasts forever.

Thanks. 😀 I just had to know if I have done some potentially bad. 🤣
I think this CPU will go into the jar with gold scraps.
I collect gold from dead hardware, and when it's full, I will play with acid.