Yo posting here as well with some BIOS details hoping you guys can help improve my overclock.

multiplier: 9
FSB: 333
CPU voltage: 1.385
Other voltages: AUTO
FSB lock to NB: AUTO
RAM: DDR2-667
Timing: 5-5-5-15 (rest at Auto)
Transaction booster: Believe i disabled it or was it a relax 0
Spread spectrum: Disabled
The rest were set at Auto.

Processor: Q6600 G0 currently running at 3.0 ghz 333x9 (tested with 12 hours prime) using HyperTX cooler and 1.365 voltage
Motherboard: Asus P5KR with vdroop pencil mod
RAM: 2 x 1gb Team Xtreem RAM DDR2 1066 running at 667 mhz (for troubleshooting first) at 5-5-5-15 at Auto Voltage
PSU: Gigabyte 850 W Odin
GFX: 2x4850 Crossfire (non oced)

Right now 3.0ghz is fine. Temps are around 47C Idle but jumps up to 69C ish after about an hour of priming based on Speedfan. A bit concerned about temperature.

A note that before the pencil mod, I could not get my overclock higher than 2.8ghz as the voltage kept on fluctuating.

But if I try to run it at 3.2 ghz I'll get an error at Core 2 using Prime(that is 0,1,2,3). Tried increasing the voltage but still received the error within a few minutes of running even at 1.425 V

Have I really hit the limit of my processor or is the mobo to blame or my pencil mod? Please note that without the pencil mod I could not even get up to 3.0ghz.

....

850 W is more than enough for my setup and I have tried taking out one GPU with no difference in results.

Yes i know it's not recommended that's why I'm asking for tips. The voltage I am using is far from being high as well. It's actually running at 1.365 at the moment.

This post has been edited by Reuben: Jul 9 2008, 02:41 PM

Coolermaster HyperTX as mentioned above

47 C on idle. 69-70 C on load at 1.365 V
This is after 4-5 hours of priming.

Usually if it goes up for a few minutes it's only around 60 C.
I just applied Arctic MX 2 thermal paste so not sure if it needs time to set in.

I have done a memtest before but i'll give it another go.

Apparently the loss by using p35 and the pci-e x4 on the second slot results in a 5% loss.
Not THAT bad but yeah not ideal.

Voltage is correct.

Reapplied the thermal paste and temps are now in the 52-56 C range under full load for 20 minutes. Haven't had time to let temps stabilize further.

Thanks I've listed my settings below.




Actually what would be more helpful if you could tell me what was wrong about the fsb and nb voltages instead of giving me just a hint since I'm here solely because I'm frustrated with my overclock, not because I want to guess what you mean...I know you guys trying to help but aiyo I'm so frustrated here and now have to guess some more.

I say they are correct because I have tried a large range of voltage options and none of them work. This seems to be the case regardless of whether I set it to AUTO or not. Please review my settings below and tell me where I went wrong.

These are the voltages I tried.

CPU vcore: Auto won't work, Manual 1.35 V all the way up to 1.45 V in 0.0125 V increments
PLEASE NOTE THAT I HAVE TRIED THIS WITH BOTH PENCIL MOD AND WITHOUT.
CPU-Z and Everest reports BEFORE pencil mod that I need to set it at high 1.4s to get it even working stably at the reported voltage of 1.385 V.
After the pencil mod, the voltages reported were the same as set in the BIOS and I could reach 3.0ghz for some strange reason.

FSB Termination Voltage: Tried all the options there is. I left it at Auto it won't work as well
Northbridge: Tried Auto all the way from 1.20V - 1.55V
FSB speed: 333 works reliably now. I upped it to 355 which is 3.2 ghz but it won't work. I only tried incremental increases a short while but as you implied 3.2 ghz should be easily achievable. I also used multiplier 8 at 400 FSB
Multiplier: I used multiplier 9 and also multiplier 8 at 400 FSB
RAM voltages: Auto, 1.8 all the way up to 2.2 (seeing that i was operating at only 667 mhz i didn't see why i should up the voltage any higher unless i was going to the 1066 range)

RAM timings: 5-5-5-18 (although RAM rated up to 5-5-5-15 at 1066mhz at 2.2-2.3V) I relaxed the timings just to be doubly sure.

Yes I've also done all the required in disabling Thermal Management and all that stuff.

DO LET ME KNOW WHAT OTHER SETTINGS I HAVE LEFT OUT! I can't remember the BIOS screen perfectly

The article below expresses the same problems I have with this board. It seems the more I deviate from 'AUTO' the worse results I get. The thing is that it SOMETIMES works which is really bollocks to me...Priming would work at 3.2 ghz for about 15 minutes then fail.

http://www.xbitlabs.com/articles/mainboard...asus-p5k_9.html




Yup you are correct on this. Not sure where was the other article that I looked up before I got my crossfire setup. now regretting it and considering whether to get a new mobo but sooo tired la keep on changing hardware.

Would appreciate advice on my current hardware now. However I am open to suggestions on what other crossfire mobo I can get. Budget around RM700 at max...
I also have a spare gaygaybyte p35c-DS3r but that mobo does not have crossfire and is still subject to voltage droops and what not.

This post has been edited by Reuben: Jul 10 2008, 09:22 AM

Thanks for the update Will give it a go. and I will post my coretemp vid shortly when i go back for lunch.
What is a recommended FSB termination voltage?

also i tried googling this all up on what each of them do but i don't quite understand still Would appreciate some brief explanations.

Coretemp reports.
CPUID=0x6FB
APICID=0
Revision=G0
Processor=Intel Core 2 Quad 6600 (Kentsfield)
Frequency=3005.55MHz (333.95x9.0)
Platform=LGA775
VID=1.3250v

Is the high VID the culprit here?


Nawp still crashed. I went and wrote everything down when it failed at 3.2ghz
When I put my results with a / means I tried them all

AI Overclock: Manual
CPU Ratio: 9
FSB Strap: Auto
FSB frequency: 355
PCI-E Frequency: 100
DRAM: DDR2 711MHz
Dram Command: Auto
dram timing: Auto 5-5-5-18-3-42-6-3-3
Dram static Disabled
Transaction booster: Disabled Relax 0
CPU Voltage: 1.375 and changed it up to 1.425
CPU PLL: Auto
FSB Termination: Auto/1.2/1.3
NB: Auto/1.2/1.4
Clockovercharging voltage: AUTO
Load line calibration (i think this is voltage dampener): Enabled
CPU GTL Voltage: 0.63/AUTO
NB GLL Voltage Reference: 0.67/AUTO
Spread spectrum for both cpu and gpu disabled.

You're only overclocking your RAM? What about your CPU?

Usually the auto tweakers aren't that useful imho.

Thanks for the tips and yes I realized I'm wasting my time so I got myself an x38 Asus Maximus Formula so I can run pcie16 x 2:D appreciate yoru help though as it did improve my knowledge.

Btw I managed to get it to 3.2 ghz but at an extremely high voltage at 1.485 WITH the pencil mod. Ahsiah has told me it's most likely the high VID I got with this chip and I am inclined to agree. This combined with the stupid voltage droop on the P5K kinda ensures my doom

This post has been edited by Reuben: Jul 11 2008, 05:30 PM