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Neon_WA
Joined: 08 Nov 2008
Posts: 7146
Location: Margaret River, West Australia
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 Posted: Thu Oct 08, 2009 12:18 am Post subject: ES Pro board - chasing info if anyone got one |
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Just wonder if anyone had an ES Pentium Pro board in their hands or seen one close up. 
I am interested in finding out if the boards only had 60 & 66 FSB available or if they also had 50 FSB available as a bus setting
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Chook
Joined: 29 Oct 2008
Posts: 2250
Location: Australia
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| Posted: Thu Oct 08, 2009 4:31 am Post subject: |
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My production Asus board has two jumpers for FSB - that gives four possible positions. Two of them are listed for 60 and 66, the other two as 'Reserved' One of the reserved settings gave 50Mhz, the other didn't do anything.
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Xaar
Joined: 30 Sep 2009
Posts: 319
Location: Germany
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| Posted: Thu Oct 08, 2009 4:54 am Post subject: |
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I got a Chaintech 6ITM board here which has the capability to run CPUs at bus speeds of 50, 55, 60 and 66 MHz 
My other boards (ASUS P/I-P6NP5 and a dual Pentium Pro Tyan S1662) only can run at 60 or 66 MHz. But the ASUS board has also two "reserved" positions, so that this board may also can run at 50 MHz.
What I find amazing is the fact that my two single Pentium Pro boards can run CPUs at a multiplier of 2.0 up to 4.0 (the ASUS board up to 5.0)! The dual Pentium Pro board only can run with a multiplier of 2.5 or 3.0.
Best regards, Karsten.
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Neon_WA
Joined: 08 Nov 2008
Posts: 7146
Location: Margaret River, West Australia
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| Posted: Thu Oct 08, 2009 4:58 am Post subject: |
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| Xaar wrote: | | I got a Chaintech 6ITM board here which has the capability to run CPUs at bus speeds of 50, 55, 60 and 66 MHz |
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Xaar
Joined: 30 Sep 2009
Posts: 319
Location: Germany
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| Posted: Thu Oct 08, 2009 5:11 am Post subject: |
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| Neon_WA wrote: | | Xaar wrote: | | I got a Chaintech 6ITM board here which has the capability to run CPUs at bus speeds of 50, 55, 60 and 66 MHz |
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Well, I got that board (originally packed!) together with an other Socket 8 board some years ago for only some Euros. Unfortunately the bracket for the external interfaces is missing.
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frag_
Joined: 17 Nov 2008
Posts: 4015
Location: Estonia
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| Posted: Thu Oct 08, 2009 5:27 am Post subject: |
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PPro (at least 200) can handle 75 or even 83 MHz fsb,
I checked with Asus P2L97 (440LX chipset) with very early bios and socket8 -> slot1 adapter
This combo gives me a WR in PiFast and SuperPi
http://hwbot.org/hardware/processor/pentium_pro_200mhz_256kb |
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Marcin
Joined: 02 Jan 2005
Posts: 8519
Location: Poland
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| Posted: Thu Oct 08, 2009 6:08 am Post subject: |
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I had 20 of NOS Chaintech 6ITM (ATX factor model). Unfortunely all sold for cents and last went to scrap yard. Now I see there aren't many of them.
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fRaSsL
Joined: 31 Mar 2003
Posts: 1570
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| Posted: Fri Oct 09, 2009 2:02 am Post subject: |
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Marcin, the question was for ES-boards, not ordinary PPro boards...
And yes, I have an ES PPro board. You can allready switch between the FSB.
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Neon_WA
Joined: 08 Nov 2008
Posts: 7146
Location: Margaret River, West Australia
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| Posted: Fri Oct 09, 2009 2:09 am Post subject: |
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| fRaSsL wrote: | Marcin, the question was for ES-boards, not ordinary PPro boards...
And yes, I have an ES PPro board. You can allready switch between the FSB. |
thats ok.. I was mainly interested if there was any truth to the "urban myth" that the earliest Pros were only 100MHz (2 x 50MHz)
Was hopeful of getting the week 11 1995 Pro that just sold in Oz.. and modify a standard board to 50 & 55 FSB by changing the crystal.
But alas.. i didnt win it.... so the point is mute now 
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