E6750 oc

[Larkie]

I set memory to unliked and changed fsb by 20 mhz the screem happens as soon as i reach my desktop from boot and its my speakers that scream

 

[Kl2amer]

it's good that it's happening once your operating system is up. That means it's probably a driver issue and your mother board is fine. Kind of odd though. Are you using the onboard audio or an audio card?

 

[flyin15sec]

Check your video card, make sure it is seated properly and PCIe cables are securely inserted into the video card. My old 8800GTX would 'scream' when my system goes into a sleep mode, thinking that it is not getting enough power.

Only other thing I can think of that may cause that is internal case speaker or your PSU. I know my cheapo Coolmax 500W, sent out a hi pitch scream, just before it died on me.

 

[Kl2amer]

good call, also double check your NB PCIE frequency in your bios and keep it at 100. I agree that it could be a power supply issue.

 

[Larkie]

Im using a sound card. My psu is only 6 months old but is a 600watt ocz am i taxing the psu runing two graphics cards

 

[bobbknight]

OK who's 3D Mark is bigger? I wana see pics.

 

[Larkie]

oczgxs600 is this powerful enough as reading Flyin15sec post i checked cables and seating all seems to be fine also my pcie in bios is at 100 but when i looked at nvidia control panel motherboard settings my pcie slider is half way between 100mhz and 120mhz and at side pci-e bus of 2850mhz

 

[Norks]

I fully agree with kl2amer that you should have a very simple to achieve and stable 3.2 GHz overclock by simply increasing your FSB in steps to 400MHz, but if you crash on the way there, try upping the CPU voltage as he suggests. Nothing else should need to be changed (except disabling C1E & EIST functions, and ensuring CPU : DRAM is set at 1:1). However, once this works for you I would try tightening the timings on your RAM to 5-5-5-15 and going to the maximum RAM voltage rated for your OCZ sticks. Also, if they are rated at 4-4-4-12 (as mine are at 800MHz), you could even try those settings. I also agree that you may have a power supply problem and the noise is from your graphics cards, but I don't know enough to help you with this. 600 watts would be the bare minimum for two 8800gts cards in sli, but the lowest wattage OCZ sli certified power supply is 700 watts - see: http://www.slizone.com/object/slizone_build_psu.html. Try disabling one card to check.