gpu affected by cpu oc

Micro-star international / Ms-7380
August 19, 2009 at 15:50:31
Specs: Microsoft Windows XP Professional, 2.399 GHz / 3071 MB
i am new at overclocking but i know my gpu is not supposed to get to 88c when i overclock my cpu from 2.4 to 2.6 oh and my cpu temp is fine it only got up 68

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August 19, 2009 at 18:52:32
"i am new at overclocking"

Are you locking the PCIe bus at 100MHz? If not, it's overclocking along with the CPU & that is NOT a good thing.

"my cpu temp is fine it only got up 68"

68C under full load is OK...68C at idle is not OK. It would help to know your complete system specs...CPU, RAM board, video card, power supply. Is your board the MSI P7N SLI Platinum?

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August 20, 2009 at 10:55:39
so you are saying to change the cpu clock but not the fsb or is the fsb the same as the PCIe bus (i am useing the msi dual core center because i did not want to go into the bios)

yes that temp is at full load

yes you got the motherboard right

video card geforce 8800 gtx

ram: physical 4gb computer reads 3gb

power supply: extreme power 600w cool master

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August 20, 2009 at 11:15:37
Overclocking should be done thru the BIOS, not thru a software program, even if it is supplied by the board manufacturer.

Personally, I try not to use use the term FSB as it's not's basically a marketing term. You should be talking about the various frequencies. For example, 800MHz FSB actually runs at 200MHz frequency...1066MHz FSB actually runs at 266MHz freq...1333MHz FSB actually runs at 333MHz freq, & so on. Same goes for RAM...DDR2-667 runs at 333MHz freq, DDR2-800 runs at 400MHz freq, DDR2-1066 runs at 533MHz freq.

You never listed which CPU you have, only that it's default speed is 2.4GHz. I can only guess that it's clock settings are 9 x 266MHz? If you bumped up the speed to 2.6GHz (which is an extremely minor overclock), you probably increased the frequency to about 289MHz? But what you need to realize is that there's a domino effect...when you increase the CPU frequency, you also increase the RAM frequency, PCI frequency, PCI-express frequency, etc. And to prevent them from going too far out of spec, you need to enter the BIOS & make some changes. You need lock the PCI & PCI-e at their default speeds. There is no benefit to overclocking them...all it will do is cause instability.

You should also strive to maintain a CPU:DRAM frequency ratio of 1:1. What that means is that if you run the CPU freq at 289MHz, the RAM should also run at 289MHz. If doesn't matter if you have DDR2-667, DDR2-800 or should be scaled back to match the CPU frequency.

There are other BIOS settings that should be addressed as well...EIST, Spread Spectrum, RAM timings, voltages, etc.

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August 20, 2009 at 15:15:48
it is a Intel core 2 6600 and could you send me a link to a video tutorial on those things you mentioned because it sound very complicated

and it is 267 default

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