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Front Side Bus Speed Mis-match

Last response: in CPUs
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August 15, 2012 3:21:45 PM

Hello,
What happens if I install a CPU with a FSB speed of 1333 in a motherboard with a FSB speed of 800
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a c 89 V Motherboard
August 15, 2012 3:25:09 PM

Can the board support 1333? If your board can support that CPU it should go that high.
a c 105 à CPUs
a b V Motherboard
August 15, 2012 3:28:05 PM

It will either underclock the CPU or it won't work at all.
What is the CPU you want to install , your current one and your motherboard or computer model?
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a b V Motherboard
August 15, 2012 3:28:46 PM

What about telling us which cpu and mobo you´re talking about?
August 16, 2012 12:19:05 AM

4745454b said:
Can the board support 1333? If your board can support that CPU it should go that high.

My current system is a dell optiplex 745, Small Mini Tower, Service Tag H31YPC1; it has a Pentium D, 3.4 processor. According to Dell's specs for my system, it supports the Intel® Pentium® D 800MHz FSB Socket T with Dual Core technology XD, EM64T, 2x2MB L2 cache, EIST, and VT on 950/960 (900 series); it also supports the Intel® Core™ 2 Duo 1066MHz FSB Socket T with Dual Core technology XD, EM64T, 2MB and up to 4MB L2 cache, EIST and VT (E6000 series). ). I’m interested in finding out if a FSB mismatch will work at the lower of the mis-matched speeds, will not work at all, or will cause the system to over-heat and crash.
a c 105 à CPUs
a b V Motherboard
August 16, 2012 12:24:36 AM

Being a dell, a CPU with 1333 MHz FSB probably won't be supported by the BIOS.

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a c 89 V Motherboard
August 16, 2012 1:23:18 AM
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If it supports a C2D 1066FSB then get one of those. There are a number of CPUs that will be faster then your P4D.
August 16, 2012 2:14:46 AM

Best answer selected by dan_tucker.
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