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Getting ready to overclock, multiple Q's (e6750)

Last response: in Overclocking
September 25, 2007 9:13:27 AM

Sorry if this post has been asked to death, or if it angers you for what ever reason... I just really don't want to ruin my pc that I worked all summer for. I may be over analyzing, but I tend too. Anyways here goes.

Current specs:

TP35D2-A7 -
4 gigs DDR2 800 - (Was only going to get 2, but newegg had a deal for $88 US a pair)
6800GTS 320mb (evga)

Well after about two days of browsing and reading while waiting on ram (thank you graysky and who ever else contributed to, I am ready to OC my e6750. I have hopes for getting it to 3.2 and run 1:1 with my pc6400, which as I understand is pretty reasonable. So far I have this down in my head:

Disable the C1E, speedstep, PECI, max cpuid, and spread spectrum.

set PCIE Freq: 100mhz
set PCIE Clock Sync: 33.33

Is it safe to test out my ram at its default settings of 4-4-4-12?

I am guessing ( motherboards manual )

PCIE Clock select = PCIE Clock Sync
PCIE Clock = PCIE Frequency

My last two questions:

1. Since I decided to buy another 2 gig kit, will it have any negative effects, do any harm, or slowdown my machine if I pop it in with my xp home? I am planning on upgrading to vista home premium within the next few months (before spring).

2. My PC has small holes for where the "easy snap" thing that was supposed to replace screws for the expansion slots, should I put electrical tape over them for improved airflow?

Many thanks to anyone that can help this confused newbie.

edit, I just found this thread: could I have messed up my pc by not disabling things and just doing what that guy said?

September 25, 2007 2:44:09 PM

Good job at doing your homework. You're ready. GRAB YOUR GEARS & MOVE OUT!!! :) 

Your o/c won't go very far unless you have a good aftermarket cpu cooler & case cooling. The mch/northbridge is kinda hot when overclocked.

The ram should run at specs if it's not overclocked. Give it stock voltage & timings. Generally, you tighten the timings when you underclock the ram & loosen them when you overclock the ram.

Affirmative, those are the settings to change:

1. Don't you already have 4x1gb? Negative, it won't do harm to your pc, except your wallet.

2. Where are the holes? If the pc doesn't have enough airflow, taping the holes will increase the temps.
September 28, 2007 12:18:52 AM

Ty for the info dude, currently running at 2.8 (400x7). Will I notice any difference in normal computing and gaming than x8? I like these temps better, it sits at 51/52c sometimes jumping to 54c for a second or two on orthos/prime95. @ 3.2 it would peak at about 57-58c.

Orthos results @ 3.2 400x8 1.35v
  1. 1:Torture Test ran 1 hours, 25 minutes 26 seconds - 1 errors, 0 warnings.
  2. 1:Execution halted.
  4. /
  6. 2:Torture Test ran 1 hours, 25 minutes 26 seconds - 0 errors, 0 warnings.
  7. 2:Execution halted.
  10. second go:
  12. Test 7, 1500 Lucas-Lehmer iterations of M43943041 using 2560K FFT length.
  13. FATAL ERROR: Rounding was 0.498046875, expected less than 0.4
  14. Hardware failure detected, consult stress.txt file.
  15. Torture Test ran 8 hours, 55 minutes 19 seconds - 1 errors, 0 warnings.
  16. Execution halted.
  18. /
  20. Test 7, 1500 Lucas-Lehmer iterations of M43943041 using 2560K FFT length.
  21. Torture Test ran 8 hours, 55 minutes 19 seconds - 0 errors, 0 warnings.
  22. Execution halted.

I couldn't find the stress.txt file anywhere.

I read that 60c is red line, is that true? If not what are acceptable temps if I go for 3.2 again?

And can anyone tell me what FSB termination voltage and (G) MCH Voltage are for and if I should adjust them?

edit, i just got this on orthos:
FATAL ERROR: Rounding was 0.5, expected less than 0.4
Hardware failure detected, consult stress.txt file.
Torture Test ran 59 minutes 14 seconds - 1 errors, 0 warnings.
Execution halted.

how can i isolate the problem?
September 28, 2007 1:29:34 PM

Look at the cpu box. If it has the SLA9V, then it's this:

Up to 72'C. 60'C is for other steppings. If no box, google cpuz & look at revision. Should be G0.

Revert bios to defaults, run orthos, if it gives errors, then your defaults aren't even stable. If it's stable, then o/c the cpu.

You don't always get 400 fsb which is usually the fsb strap/wall/hole that won't let you run stable. Try something between 333-380x8 & 410-450x7.

Try some other programs like memtest+ & super pi.