Is it fake?

[pinkie]

I found I have not SB80486DX4-100 in my collection.

And I found one on ebay.
http://cgi.ebay.com.cn/ws/eBayISAPI.dll?ViewItem&item=6887742843&category=95285&rd=1&referrer=http%3A//search.ebay.com.cn/_W0QQfrppZ50QQfrtsZ100QQfsooZ1QQfsopZ1QQrdZ0QQsassZchipsfans#ebayphotohosting

But I thought it's a fake.

Is it a fake chip?

Thank you.
Yan

[debs3759]

The SX920 on this site is an SB80486DX2-50. CPUShack has the same. Unless the sSpec was reused (that sometimes happens...) it is a fake.

Another thing that has me thinking it is a fake is the heights of the characters. The digits are taller than the letters, and that is not normal on the Intel chips I checked.

[CPUShack]

thats a fake, the print on 'Intel' is horribly bad, typical of fakes.

[JAC]

I have seen several speeds with the same spec on ebay, all QFP out of interest. I never won the auctions, I was always beaten by the high rollers. Anyway.. here is my SX920



one from the auction...

[gshv]

I can't see your picture...

In my opinion the SB80486DX4-100 is a fake.

Gennadiy

[pinkie]

Thanks all for information.

Did intel change the prefix SB to FC of plastic QFP 486 after DX2-66.


Yan

[Mixeur]

FC are not completely plastic, but have a big metalic plate on the top.
That is the reason of naming change from SB to FC

[jrmunro]

My SB80486DX2-50 has sspec of SX325. It is mounted on a small board
that I got from a laptop. I couldn`t find SX325 on Genna`s spec finder.


John

[gshv]

[jrmunro]

[T-HEX]

Green plate and wires on this chip is very similar to Cyrix 5x86.

[Cpuswe]

[debs3759]

A simple CPUID test using any respectable CPUID app will show if it is an Intel/AMD or a Cyrix/clone chip, as the two have different features and identification routines.