E8500 overclock result..so far !!

[hansje]

Yesssss, three hours now

Is six enough ???? PRIME BLEND

Hans

[ctal]

Sounds good! But I usually run "in place large FFT" mode, which is a more severe test with respect to the cpu. Memtest86+ takes care of the memory. I'd suggest maybe running Prime95 in large FFT mode for an hour or two and then declaring victory!

-- Al

[hansje]

I will...but it looks so nice, four hours now without an error

I will do that tomorrow, first want to run this for six hours Al

Hans.

[hansje]

Ohh why not, will run it for two hours...I hope

Just enough before I go to bed

Hans.

ITS RUNNING !!

[hansje]

No...after 1 hour and twenty min. ERROR

BIOS:

CPU Core >> 1.35 V
CPU FSB >> 1.4V
Memory >> 2.200V
SPP >> 1.40V
MCP >> auto = 1.500V
SPP-MCP >> auto = 1.20V

Can't be the memory ???? ...so CPU ??

What to do ??

With this test, the temp. stayed at MAX 63 C...not bad considering my system is running for about 14 hours now.
And IDLE gives a nice 43C again !!


Hans

[ctal]

Not sure what SPP and MCP are -- I have no experience with nVidia chipsets. I thought you were using 2.275 on the memory, but your last post says 2.200. What is the maximum voltage the memory is rated for (see the manufacturer's website if need be)? Also, I'd go to about 1.38V on the cpu and reduce the fsb to around 1.36 (thereby raising the cpu slightly, and making the fsb voltage stay no higher than the cpu Vcore, taking into account "Vdroop" that I referred to in TQ's thread that you participated in).

-- Al

[hansje]

My fault..it was 2.200, this is the default Volt. for this memory.

I have asked whats the MAX to use with this memory, 2.300 seems to be safe

I lowered the FSB to 1.3V (can choose 1.2 - 1.3 - 1.4 - 1.5)

CPU >> 3.6 at the moment.

Give this a try...thanks Al and have a nice weekend

Hans.

[hansje]

I am back

2 hours 30 min. BLEND in PRIME...NO ERRORS

2 hours and 4 min. LARGE FFT's...NO ERRORS

TEMPS with REAL-TEMP max. 63C

CPU running 4.0 with 9.5 multiplier
Bus-speed 421.0

Memory 421.0 (1:1) with 4-4-4-12-1T

Current VOLT-settings BIOS:
Vcore 1.36
FSB 1.3
Memory 2.275


Hans

[ctal]

Nice!

I'm running my E8400 at 3.8 gHz. Add the 0.16 gHz difference in stock speed relative to your E8500, multiplied by the overclock ratio, and you get almost exactly 4.0! Very consistent.

You could probably go higher by pushing the voltages and temperatures, but my instinct is that to go significantly higher you'd probably be jeopardizing long-term reliability.

-- Al

[hansje]

Thanks

I think I better leave the CPU at 4.0...because of the low Vcore, and TEMPS.

Only thing I can do to get some extra FPS, is maybe to use multiplier 9...to overclock my memory a little more ??

Hans

[ctal]

Originally Posted by hansje

Only thing I can do to get some extra FPS, is maybe to use multiplier 9...to overclock my memory a little more ??

Yes, I would say that makes sense if your memory and mobo will still allow you to get the cpu to a stable 4 gHz.

-- Al

[hansje]

Give it a try

Hans.

[hansje]

Mulitplier X9 (CPU still 4.0) ...this with 4-4-4-10 (not 12) -1T

BLEND/test, so lot of RAM tested, two hours...NO ERROR

Memory running 1:1 with 444.5 ...same Volt so 2.275V and the rest the same as above !! ...and 63C max in REAL/TEMP.

Gaining two FPS in my favourite race-sim GT Legends

Whats next ?? ...maybe CPU 4.1 ?? ...multiplier 8.5 ??

Thanks for helping

Hans.

[ctal]

Well, you could stop there, or try to raise the cpu further if you want. If you try to go further, remember that the way to find the optimum overclock is to temporarily relax the memory to very conservative settings, then determine the maximum overclock that you can achieve for the cpu, testing with Prime95 (large FFT mode), then speed up the memory as much as possible, testing with Memtest86+.

Regards,
-- Al

[hansje]

Will give it a try....you mean 5-5-5-15-2T ??

Or lower the DRAM frequency ??

I can sometimes run the MEMTEST without errors for some hours...and get an error in BLEND prime, any idea ??

Hans.