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#1
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Pentium II 300MHz in a 1200 - can do?
On my quest for headers in the junk box at the back of the workshop, I
stumbled across a CPU, a Pentium II marked 80522PX300512EC which I believe is a 300MHz model with a 66MHz FSB. Now I just wondered whether it would be worth plugging into the Proliant 1200R I got last Sunday - it has a 266MHz unit. Is this worth doing? I don't know if the 300 works, but if it does, it might make the motherboard crank along a hair's width faster. Are all other things (VRM requirements, jumper settings) the same? |
#2
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Hmmm... I just answered my own question - it fired up OK, but both the
BIOS and the OS report seeing a 266MHz CPU. Just for fun, I tried running SCU to see if it would make any difference. It didn't. So question is: are there some jumper settings I need to change on the main board to tell this thing it's gained an extra pound of boost pressure, is it simply a case of don't bother, it won't go past the set speed limit anyway? I hope it's jumper settings, because if it works I could probably find a 500MHz CPU on ebay for a dollar and turbocharge it. |
#3
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You have to locate SW1 (Bus/Core Ratio Settings), a dip swith just
above the memory expansion board slot. For a 300MHz, use these settings: SW1=off SW2=off SW3=on SW4=off The documents I have show that a 333MHz may be the highest you can go. |
#4
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#5
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Another interesting problem.
I have yet to encounter a blown motherboard...but logic tells me that it must happen occassionally. When you engage the power button, do you hear the noises associated with boot-up (ramping power supply fan, some whirring from the drives, etc.)? Do you see any LED flashes from the drives or CD? Finally, please tell me that you did not accidentally toggle the dip switch which disables the on-board video. The switch bank where you located the dip to "nuke the NVRAM" shows that switch being number 6 and the video disable being number one...not to difficult to confuse the two. Just to be safe, every switch on that bank should be set to OFF, by default (except #3 if you have a rackmount unit). |
#6
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#7
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Found it. The system expansion board had tossed its cookies. After
replacing it, the system came up fine. Did a ROMPAQ update (the new expansion board had come out of a 1600 somewhere) and we're back in business. I don't know why it went, but now that it's working, I ain't touching it! Maybe its time was about due anyway. |
#9
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Ah I see - so it just sets a flag. Fair enough.
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#10
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In article , NuTCrAcKeR wrote:
The rack switch setting has to do with the insight agents. When viewing a remote system, it tells you if its a tower or a rack mounted machine. It can be useful when trying to identify a machine that is under management at a remote location. This switch also seems to have a double-identity for certain servers such as my 6400R.. The big colorful sticker on the lid indicates it's a switch as you indicated above, but the maintenance manual that was pointed out to me on HP's website calls that switch "External hot-plug redundant system fan assembly uninstall".. Curiously long name if you ask me.. (8- -- Rick |
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