E6850 HELP!!!

TK421 · 13 Oct 2008 at 00:07

I have just started overclocking and so far i have managed to get my e6850 from 3.0 to 3.5 running stable with orthos for 12 hours!! when i tried 3.6 i just keep failing or hanging what is causing this? i have upped voltages on cpu,NB,memory,FSB VTT but stiil cant get it stable.getting to the point i dont want to fry my stuff as i dont know the limits of it!
temps are max 61'c under load for a few minutes at times trying 3.6,are these okay.

1600mhz
9x400
800mhz mem 1:1 ratio- 5, 5, 5, 18 2T
cpu 1.5 volts- stock 1.3 roughly
NB 1.4 volts-stock 1.3
memory 1.90volts- stock 1.80
SB stock
FSB VTT 12%

Antec twelve hundred
E6850
msi p6n platinum
2x 8800gts
pny 800 ddr2
750w corsair
artic cooling freezer pro 7
vista ultimate 32

zykan · 13 Oct 2008 at 20:35

tried upping cpu pll?

TK421 · 13 Oct 2008 at 21:10

I have upped the cpu from 1.3 to 1.5 and still hanging...do you think i should give it more juice?

RJC · 13 Oct 2008 at 21:13

It could be yout motherboard or cpu are poor clockers, you might be at your limit.

TK421 · 13 Oct 2008 at 23:44

i have heard in other forums the mb overclocking higher than 3.6ghz and the cpu over 4ghz stable!

TK421 · 16 Oct 2008 at 00:39

well ithought there would be more responce than this!!! to answer zykan there is no cpu pll on my bios any other ideas... i no this setup can go way past 3.6...i just need pointed in the right direction!!!

PaulyD · 16 Oct 2008 at 08:42

Have you dropped the multi and upped the FSB to make sure its not a FSB hole/board limitation?

Have you slackened the RAM timings and kept it low to ensure its not a RAM problem?

decto · 16 Oct 2008 at 18:50

TK421 said:
msi p6n platinum

The N650i and N680i aren't great clockers.

The odd board scales ok but I never got my Abit FP-IN9 (650i) really stable beyond 1500FSB

I have an MSI P6N diamond (680i) also not a great clocker... tops out at a similar 1500ish FSB with a dual... quads... well ouch!

Recently slipped in a B-Grade Asus 750i and that is far better at clocking and I get far better frame rates with SLI that I did with the 650i or the 680i. Running 2 x 8800 GTS 512

Previously I couldn't get anywhere near the expected rates. Now in Crysis ~ 41 @ High 19x12 + 45 @ high 16x10 vs 36@ 16x10 high all with the CPU @ 3Ghz, 3dmark approx 17700 vs ~ 15,000 etc but now I'm bang on where it should be now

I'm not sure you'll get much more out of your board with that CPU. An E5200 may be an option if the BIOS will support it... starting from an 800FSB you can hit 4Ghz ! before your FSB hits 1333

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decto · 16 Oct 2008 at 19:13

TK421 said:
i have heard in other forums the mb overclocking higher than 3.6ghz and the cpu over 4ghz stable!

It depends on the starting FSB of the CPU and the CPU multiplier... not just the final speed

TK421 · 17 Oct 2008 at 00:25

holy crap decto!! 17700 thats amazing with 2x 8800 gts 512.....i can only get 14700 running unstable at 3.6 with the 320...i take my hat of to you!!! thanx for the replies ppl