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GRX-RAJU
Joined: 02 Apr 2012
Posts: 135
Location: Poland
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 Posted: Thu Oct 22, 2015 4:35 am Post subject: Cyrix 6x86 gold bottom |
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Could anyone help me to identify these CPU.
It doesn't have any markings on top.
Only on the bottom side it has these markings: 1995 Cyrix USA G5D7603A |
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frag_
Joined: 17 Nov 2008
Posts: 4015
Location: Estonia
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| Posted: Thu Oct 22, 2015 4:58 am Post subject: |
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| Should be P80 or P90 (which is the same thing). |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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GRX-RAJU
Joined: 02 Apr 2012
Posts: 135
Location: Poland
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| Posted: Thu Oct 22, 2015 12:08 pm Post subject: |
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Is there any way to check it??
Motherboards from that time have jumpers and user have to manually set the CPU frequency. |
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frag_
Joined: 17 Nov 2008
Posts: 4015
Location: Estonia
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| Posted: Thu Oct 22, 2015 12:30 pm Post subject: |
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First ones are tough to overclock and it can be used to determine it.
If it is stable as 40x2 but unstable as 66x2 then most likely P80 or 90, otherwise P166. |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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frag_
Joined: 17 Nov 2008
Posts: 4015
Location: Estonia
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| Posted: Thu Oct 22, 2015 12:47 pm Post subject: |
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| CPUShack wrote: | | some of the later ones were marked as PR166 @ 133MHz as well |
Good to know!
Is it possible to see the photo with the back somewhere? |
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misace
Joined: 14 Sep 2012
Posts: 932
Location: Prague, Czechia
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| Posted: Thu Oct 22, 2015 1:06 pm Post subject: |
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John can see it at home 
http://www.cpushack.com/chippics/Cyrix/6x86/
_________________
Looking For Chips 386 J38605DX, Symphony FPU, Rise Tiger, MP6-II, Winchip 3&4, IDT C6-Early Logo, Nx686, Tesla 8088, L80C86, Bulgarian 8088, Pentium 4 QT69ES. |
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frag_
Joined: 17 Nov 2008
Posts: 4015
Location: Estonia
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| Posted: Thu Oct 22, 2015 1:09 pm Post subject: |
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Oh, right 
Incredibly early 166. |
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