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Having trouble OC'ing an e6600

post #1 of 8
Thread Starter 
G'Day. Im pretty new to overclocking and have been having a go at overclocking my new rig of an e6600, PW5 DH Delux (1305 Bios), Corsair PC 5300 DDR2-667 and have a water cooling kit.

Ive managed to get a stable PC running @ 3.2 but i cant seem to push it any higher. Ive tried increasing the vcore but it didnt seem to have much effect.

I have the following settings in the bios.

CPU Freq: 370
Dram Freq: Auto

Performance: Auto
PCI Express: 100
PCI Clock: 33.33

Memery Voltage: Auto
CPU vcore: 1.520

sfsb: Auto
mch: Auto
ich: Auto

I havnt changed any other settings in the bios. Im sure its something simple that im missing here but i just cant seem to figure it out so any help would be very much appreciated.
post #2 of 8
Quote:
Originally Posted by Campdog
G'Day. Im pretty new to overclocking and have been having a go at overclocking my new rig of an e6600, PW5 DH Delux (1305 Bios), Corsair PC 5300 DDR2-667 and have a water cooling kit.

Ive managed to get a stable PC running @ 3.2 but i cant seem to push it any higher. Ive tried increasing the vcore but it didnt seem to have much effect.

I have the following settings in the bios.

CPU Freq: 370
Dram Freq: Auto

Performance: Auto
PCI Express: 100
PCI Clock: 33.33

Memery Voltage: Auto
CPU vcore: 1.520

sfsb: Auto
mch: Auto
ich: Auto

I havnt changed any other settings in the bios. Im sure its something simple that im missing here but i just cant seem to figure it out so any help would be very much appreciated.
Does "CPU Freq: 370" mean your FSB? I would of thought that, with a 9x multiplier, @ 3.2GHz you'd be looking @ an FSB of around 356, for 356 x 9 = 3204MHz (3.2GHz) ? @ 370, it'd be more like 370 x 9 = 3330MHz (3.3GHz) ?

Give us a CPU-Z screen shot of your best o/c. My initial thought, without seeing a CPU-Z screenshot, would be that you need to change your RAM timings (making them looser) or increase your RAM voltage, or both. I'm a little new to DDR-2, but I would of thought that, if you're running an FSB of 356 and your RAM @ 1:1 with your FSB, you would of o/c'ed your RAM by about 7% and if you are actually running an FSB of 370 (as you seem to be saying) you'd of o/c'ed it by around 11%. It's not a massive RAM o/c, but without altering timings or voltage it could well be enough to cause instability and to block further CPU overclocking.

Let us have a look at a CPU-Z screenshot or two. Do one of the CPU tab, one of the Memory tab and one of the SPD tab for good measure . You can open multiple instances of CPU-Z, so you can take one screenshot of all three.

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post #3 of 8
Thread Starter 
Here is the screenie of what you wanted to see Highly-Annoyed

http://img155.imageshack.us/my.php?i...cking01ms8.jpg

Hehe, yeah i got the clock speed a bit wrong in my frist post. Sorry about that but it was a typo and your right with it being 3.33.

These shots are with some different timmings as i just managed to work out where they are in the bios but it didnt really change anything.

Thanks for you help
post #4 of 8
Quote:
Originally Posted by Campdog
Here is the screenie of what you wanted to see Highly-Annoyed

http://img155.imageshack.us/my.php?i...cking01ms8.jpg

Hehe, yeah i got the clock speed a bit wrong in my frist post. Sorry about that but it was a typo and your right with it being 3.33.

These shots are with some different timmings as i just managed to work out where they are in the bios but it didnt really change anything.

Thanks for you help
You're running a 4:3 divider, so whilst your CPU FSB is at 370MHz your RAM is actually running @ 277MHz (as I understand it) which is actually lower than it's stock speed... If you're CPU is still being held back, even with 1.520v vcore, I would say that you either need better cooling, or there are some other settings in your board's BIOS that need to be altered. It's hard to believe that, even with your RAM running below it's stock speeds (with those timings) it could be a factor anymore.

What are your full load (both cores loaded) temperatures? You can use TAT or Speedfan to verify temperatures. If you look in my sig, you can download both programs from the "My Favourite Windows XP Freeware Page" linked to there. Also, ORTHOS makes for a good program to fully load your CPU cores and is also good for testing o/c stability.

Also, what cooling are you using?

Highly-Annoyed
    
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post #5 of 8
Thread Starter 
I went and got the intel thermal analysis tool and the temps were reading into the hight 60's so i tried enabling SPD timings in the bios and disabling DRAM throttling. Then i was able to change the vcore to 1.512 and get a stable bench out of it. The temps were:
Ausu PC probe - idle 35 Load - 56
Intel TAT - idle 50/50 Load - 63/63

The cooling im using the the Thermaltake Kandalf LCS case with a built in water cooling kit.

Eidt: these temps are with the comp running @ 3.4
post #6 of 8
Quote:
Originally Posted by Campdog
I went and got the intel thermal analysis tool and the temps were reading into the hight 60's so i tried enabling SPD timings in the bios and disabling DRAM throttling. Then i was able to change the vcore to 1.512 and get a stable bench out of it. The temps were:
Ausu PC probe - idle 35 Load - 56
Intel TAT - idle 50/50 Load - 63/63

The cooling im using the the Thermaltake Kandalf LCS case with a built in water cooling kit.

Eidt: these temps are with the comp running @ 3.4
I would be more inclined to trust TAT readings, but even if you take an average, it's about 60°C full load. Personally, I would consider this temperature to be a little too high, as Intel specify the max operating temperature for the E6600 as 60.1°C. Running the CPU above this temperature could mean that it may throttle (lower it's speed automatically) to prevent damage, which will mean that you won't always be getting 3.4GHz of processing out of it... Still, the Intel thermal specification is taken at the IHS (for CPUs that have them) so perhaps the TAT temps are less important in this instance? Anyway, 3.4GHz is a 1GHz o/c and imo is pretty damn good. A P4 would (roughly) have to be running at around 6.5GHz - 6.8GHz to match that and then it would have less cache...

Did you use AS5 as your thermal compound? If not, it might be worth getting some and using it in place of whatever other thermal compound you might be using. AS5 is generally accepted to be the best thermal compound you can buy. It takes about 200 hours of operation (with some cold periods when the PC is off) for AS5 to take full effect, but it's worth the wait as it can result in 2°C or more lower temps (compared to the initial application), which can have a positive effect on o/c'ing.

It's difficult for me to give you any specific advise, because I don't have the same board as you, but in general, you just need to play about with the settings and eventually, through trial and error you'll find a combination that will yield the best results. You've already got a higher stable o/c with slightly lower voltage than listed in your original post doing just that .

On water cooling, I expect that up to 1.55v v-core is OK, but in general try to use as little additional v-core as you can to get a stable o/c as it can cause long term damage if you use too much over an extended period of time. Not only that, but heat output is greatly effected by voltage, arguably more so than MHz in many cases.

Good luck with your o/c'ing and let us know if you managed to improve your already decent o/c .

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Hard DriveOptical DriveOSMonitor
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post #7 of 8
Thread Starter 
Thanks for all the help Highly-Annoyed. It was much appreciated. I have ended up just leaving it @ 3.4 for a while. Im pretty happy with its stability and temps. I did get it up to the 3.6 range stable but the temps were getting a little bit high. I have manged to lower the temps @3.5 to the low 40's idle and mid 50's for load
Over all im very impressed with my first overclock. I might have more of a play in a few months but i would much rather just play some games, hehe.
post #8 of 8
Quote:
Originally Posted by Campdog
Thanks for all the help Highly-Annoyed. It was much appreciated. I have ended up just leaving it @ 3.4 for a while. Im pretty happy with its stability and temps. I did get it up to the 3.6 range stable but the temps were getting a little bit high. I have manged to lower the temps @3.5 to the low 40's idle and mid 50's for load
Over all im very impressed with my first overclock. I might have more of a play in a few months but i would much rather just play some games, hehe.
Excellent! That is indeed a good o/c and should yield some really perceptible additional performance!

Good temperatures also . Staying under 60°C is a good move .

Good Job!

Highly-Annoyed
    
CPUMotherboardGraphicsRAM
Q6600 @ 3.6GHz (400x9) Gigabyte EP45-DS3P HD4850 512MB 630/1000 4GB DDR2-800 OCZ Gold Rv.2 
Hard DriveOptical DriveOSMonitor
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Dell Quietkey Spacesaver Corsair TX 750W Antec SLK3700-BQE (Black) Logitech RX250 USB 
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CPUMotherboardGraphicsRAM
Q6600 @ 3.6GHz (400x9) Gigabyte EP45-DS3P HD4850 512MB 630/1000 4GB DDR2-800 OCZ Gold Rv.2 
Hard DriveOptical DriveOSMonitor
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