IDT WinChip 3 for sale/trade ?

[alexzu]

Since John put some nice WinChips for sale, I've got a question to all the members - anyone happen to have WinChip 3 they wonna trade/sell ?
And what can it be, C4004 or .. $$$ ?

[lither]

winchip3...
there is only one member probably have winchip3...

http://www.cpu-world.com/forum/viewtopic.php?t=1180&highlight=winchip3

[alexzu]

Nice link, thank you !
So since they exist, I believe there should be more then 2 of them in the World ? )

[iPonRMA]

May i ask pictures?

[jrmunro]

[misace]

I look for them thoroughly, but found nothing beside these two. They are exactly the same as Winchip 2 with only one improvement, they have doubled L1 cache to 128kB. There´s no any other change according to the datasheets.

[lither]

actually there is also winchip 4 existed
and L1 cache is also 64+64=128
https://www.ele.uva.es/~jesman/BigSeti/ftp/Cajon_Desastre/MPR/121605.pdf
***
according to IDT's datasheet
http://datasheets.chipdb.org/IDT/x86/WinChip2BIOSWritersGuidev32.pdf
winchip3 's CPUID is 0x59Z
winchip2 is 0x58z
winchip is 0x54z (Z is frequency dependent)
winchip4's cpuid is not documented
***
here is my winchip (0x5AA)
it is a blank chip with C4 (winchip4's codename) written on it
and identified to be winchip4 by CPU-Z
i believe winchip4's CPUID should be 0x5Az

[frag_]

Incredible find!
Can you please post a photo?
And running SuperPi on it would be awesome

[lither]

photo...
i bought this chip from a forum member 5+years ago
and test it imediately when i got it
then i put it somewhere... i just cant remember where it is now
according to my record(it is 5+years , so i cant recall the detail)
this chip has a gold lid , its bottom cover is removable, which make it possible to take a picture of the die. but i dont have such equipment
i test it on asus P5AB (a very late super socket 7 board)
@win2000 :
it boot to the window log then crashed
if disable P5A-B's cache, it could boot to safe mode , then crashed
@win98 SE:
it could boot to safe mode only (my record doesnt mention if cache disable or not)
and can run some small program such as the cpu-z

i will try to locate this chip when i can

[frag_]

Thank you for the info!

Probably different chipsets like 430TX, or VIA's MVPs can work better with it.

[misace]

I wonder, how would it perform. I expect quite poor performance, because is quite similar to Samuel core. I don´t understand much how CPU works, but I made a little comparison. It would be interesting to measure the L1 cache latency. Is it possible that poor VIA C3 is caused also by its higher cache latency (4 clocks) or more likely due to its longer pipeline?


As you can see bellow Winchip 4 is more like Via Cyrix III, than Winchip 2&3:

[feipoa]

Any luck finding the Winchip3?

[alexzu]

Nope

[bccwchan]

[lither]