I'm having problem getting my Q6600 above 3.2/3.3Ghz.
I got 3.2Ghz rock stable (24h with 4xprime95), and I think I finally got 3.3Ghz stable (tested 1 hour with 4xprime95)
Here is the hardware I use:
Case: Thermaltake Kandalf LCS (with watercooling, 120x360mm heatsink with 3x120mm fan)
PSU: Zalman 650W
MB: Asus P5K-Deluxe
Ram: 4x 1GB DDR2 (OCZ Titanium Rev 2 PC6400 specified at 4-4-4-15)
VGA: MSI Geforce 8800GTX
RAID: 3ware 9650SE 8ML with Battery backup Unit
HD: 2x Raptor 10k 150GB in mirror on Intel Matrix Controller (ICH9R)
HD: 4x WD 500GB Raid Edition in Raid5 on 3ware controller
I'm using a 80mm fan on the RAM to keep it and the memory controller circuits cool
I'm using another 80mm fan to cool the 3ware controller & BBU
Here is my settings @ 3.2Ghz :
8x400Mhz or 7x356Mhz (both rock stable)
all default settings, except RAM set at 2.1V
CPU-Z shows a voltage of 1.42V on the CPU, which I found a bit high, so I forced it to 1.375 and enabled Voldage Damper, I gained 4°C, and everything is rock stable
I left C1E and Speedstep enable.
Here are the temps I get :
47°C Core temp, 33°C Tcase when idle
69°C Core temp, 57°C Tcase with 4xprime95 after 12 hours
These temps seems fine with me (I tested the cpu @ 3.2Ghz on air cooling, and it was stable with temps of 84°C for core and 72°C for Tcase)
I just got 3.3Ghz "stable" (didn't test long enough yet) with the following params:
Clock: 9x367Mhz, Ram @ 734
CPU Voltage: 1.4375V
CPU PLL Voltage: 1.5V
FSB Termination Voltage: 1.3V
North Bridge voltage: 1.4V
Spread Spectrum Disabled
C1E & Speedstep disable (but seems to cause no harm to be enabled)
I have core temps of 70°C and Tcase of 59°C after 1 hour of 4xPrime95
It was very hard for me to get it working, seems the CPU PLL Voltage & NB Voltage increase helped.
I tried 3.4Ghz but it is a no go whatever I do, computer boots fine, but it will blue-screen & reboot within 30 seconds of starting 4 instances of prime95
Core temp don't have the time to go above 66°C
I tried 8x425Mhz (limit for the ram, but it should be ok) and 9x378
same settings as the 3.3Ghz overclocking
Power seems not to be an issue (my UPS shows 415W charge @ full load, including the 20" lcd monitor and the speakers)
So Temperature seems not to be the issue, neither is Power. I saw posts of people getting their CPU @ 3.6Ghz with those voltages.
Also, I noticed after a crash-reboot, the POST hangs at the Intel Matrix Storage screen (either just display the Intel Matrix Storage title and hangs, or get a corrupted text display), I need to power-off and power-on, then it's fine, but if the computer crashes and reboot, it's the same again. I need to power off and on otherwise it'll get stuck on that screen. I noticed the same at 3.3Ghz on soft-restart (even it's stable).
Any help would be appreciated to get me going higher than 3.3Ghz (I'd be happy to reach 3.6Ghz)
I got 3.2Ghz rock stable (24h with 4xprime95), and I think I finally got 3.3Ghz stable (tested 1 hour with 4xprime95)
Here is the hardware I use:
Case: Thermaltake Kandalf LCS (with watercooling, 120x360mm heatsink with 3x120mm fan)
PSU: Zalman 650W
MB: Asus P5K-Deluxe
Ram: 4x 1GB DDR2 (OCZ Titanium Rev 2 PC6400 specified at 4-4-4-15)
VGA: MSI Geforce 8800GTX
RAID: 3ware 9650SE 8ML with Battery backup Unit
HD: 2x Raptor 10k 150GB in mirror on Intel Matrix Controller (ICH9R)
HD: 4x WD 500GB Raid Edition in Raid5 on 3ware controller
I'm using a 80mm fan on the RAM to keep it and the memory controller circuits cool
I'm using another 80mm fan to cool the 3ware controller & BBU
Here is my settings @ 3.2Ghz :
8x400Mhz or 7x356Mhz (both rock stable)
all default settings, except RAM set at 2.1V
CPU-Z shows a voltage of 1.42V on the CPU, which I found a bit high, so I forced it to 1.375 and enabled Voldage Damper, I gained 4°C, and everything is rock stable
I left C1E and Speedstep enable.
Here are the temps I get :
47°C Core temp, 33°C Tcase when idle
69°C Core temp, 57°C Tcase with 4xprime95 after 12 hours
These temps seems fine with me (I tested the cpu @ 3.2Ghz on air cooling, and it was stable with temps of 84°C for core and 72°C for Tcase)
I just got 3.3Ghz "stable" (didn't test long enough yet) with the following params:
Clock: 9x367Mhz, Ram @ 734
CPU Voltage: 1.4375V
CPU PLL Voltage: 1.5V
FSB Termination Voltage: 1.3V
North Bridge voltage: 1.4V
Spread Spectrum Disabled
C1E & Speedstep disable (but seems to cause no harm to be enabled)
I have core temps of 70°C and Tcase of 59°C after 1 hour of 4xPrime95
It was very hard for me to get it working, seems the CPU PLL Voltage & NB Voltage increase helped.
I tried 3.4Ghz but it is a no go whatever I do, computer boots fine, but it will blue-screen & reboot within 30 seconds of starting 4 instances of prime95
Core temp don't have the time to go above 66°C
I tried 8x425Mhz (limit for the ram, but it should be ok) and 9x378
same settings as the 3.3Ghz overclocking
Power seems not to be an issue (my UPS shows 415W charge @ full load, including the 20" lcd monitor and the speakers)
So Temperature seems not to be the issue, neither is Power. I saw posts of people getting their CPU @ 3.6Ghz with those voltages.
Also, I noticed after a crash-reboot, the POST hangs at the Intel Matrix Storage screen (either just display the Intel Matrix Storage title and hangs, or get a corrupted text display), I need to power-off and power-on, then it's fine, but if the computer crashes and reboot, it's the same again. I need to power off and on otherwise it'll get stuck on that screen. I noticed the same at 3.3Ghz on soft-restart (even it's stable).
Any help would be appreciated to get me going higher than 3.3Ghz (I'd be happy to reach 3.6Ghz)