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Monolyth
11-20-06, 11:30 AM
Hey all,
So when the Core 2 came out I was super-excited and ready to rock and roll. I first started with an ASUS P5W-DH Deluxe & 2GB of DRR Corsair XMS2 (EPP)-8500 modules and a Core 2 Extreme. My first issues were the that overclocking was terrible despite the chip remaining cool even past 3.5Ghz, something just wasn't right. I wasn't sure if it was the memory, the mobo or the processor.

So I decided okay maybe the mobo, least expensive of all the pieces to replace, so I got an ASUS P5WDG2-Professional, but my overclocking is still terrible. I cannot get over 300mhz on the FSB, even when dropping the multiplier on the core 2 & the memory down to 900mhz. I have upped the voltage on the memory to it's standard 2.2V, but everything else is the same.

Anyone have any ideas? I've tried 3 different PSU's, Tagan 900W, Enermax 600W and finally a PC-Power & Cooling 510.

I heard some word of mouth on other posts that the Corsair SLI Ready (EPP) memory has issues with the 975X chipset. Anyone know if this is true?

Thanks.

hirantha
11-20-06, 11:50 AM
why not try the 680i and low let Memory to go with the board.

dsessom
11-20-06, 12:25 PM
You actually shelled out a grand for the x6800 CPU? Man, I hate to break this to you, but you can get an x6600 (which is the best overclocking C2D from what I have seen) and overclock it to outperform the x6800 by quite a bit.

I would suggest you buy a x6600 and see if your luck changes. If you are wanting to get some nice overclocks, the x6800 is the worst C2D to do it with bro.

Monolyth
11-20-06, 01:08 PM
But how would that explain even dropping the multiplier on the processor to keep the clock low and just upping the FSB and still getting low overclocks? Also it's not so much that I want to O/C my CPU (too much) as it is my FSB to get my memory up to speed.

J-Mag
11-20-06, 01:24 PM
Why do you care how much faster your X6800 is? Are you doing any competitive benching or large amounts of encoding/rendering?

If not, then just get it stable and be happy.

lee63
11-20-06, 05:25 PM
Why do you care how much faster your X6800 is? Are you doing any competitive benching or large amounts of encoding/rendering?

If not, then just get it stable and be happy.Mine does 3.51 and that's it, its stable and Im happy (lee63)

john19055
11-20-06, 06:48 PM
Get your self a 680i motherboard and you should see your overclocking go higher .

agentkay
11-20-06, 07:07 PM
Maybe your Northbridge core clock reached the limit? I know I had that problem with my E6600 on the P5B and I couldnīt make it stable above 470FSB.

Here is how you calculate the NBCC.

Default CPU-Multi / Current CPU-Multi * FSB = NBCC

This guide helped me when it comes to overclocking the C2D, and of course the fellow nvnews members. ;)

http://www.thetechrepository.com/showthread.php?t=41