Dual socket370 motherboard

[cowcow888]

is it have to be Dual identical CPU or any other board will support
different cpu, becuase i have 566 and a 400 cpu..=)

[Paleo Pete]

Never tried to look it up, or even considered it for that matter, but logic seems to dictate that both CPU's in a dual system would have to be identical, since if they are not they run at different speeds, and that would create major problems. I don't think the computer would even boot up.

Under running conditions the CPU's share the workload, constantly being swapped back and forth, so they would have to run at the same speed since otherwise the entire system would change speeds constantly. Two different CPU's would be a bit like a race boat with a 500HP V-8 and a 200 HP-straight 6...it could only run in circles...

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[Rossgr]

Do real sure that I understand the question, but. The manual of my dual Celeron ABIT BP6 specifices that they be the same speed. I am not sure if you could get away with running your 566 at 400, You may want to try contacting the Manufacture of your Mobo about that. Or just try it, see what happens. If you can't boot then it won't work! http://www.PCGuide.com/ubb/wink.gif

[rUzz]

Your system clock dictates the amount of juice each CPU gets every tick.
When one CPU gets a faster burst rate than the other it walks with a limp.
If they are the same speed they will run appropiately.

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[xor_chad]

Hey. On dual processor motherboards the processors MUST be the same.
Reasons being because of System Timing and the CPU op-codes.
The first is obvious but the second is often overlooked.

When you run Dual CPU's you should check the Intel website and make sure that the two CPUs are of the SAME stepping(revision) or of COMPATIABLE steppings. Sometimes you will run into problems if the op-code has changed significantly between steppings. Check the list to make sure.

You COULD HAVE probably gotten away with simply clocking them the same speed IF they were of the same stepping, since what that truely means is that they ARE the same CPU but just tested at different reliable speeds. BUT intel has placed the wonderful multiplier lock on these chips and now you can only change the bus speed - which would NOT work in this situation.

Later...

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Chad Wilson
C++/ASM Programmer
PC Support Technician