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computerpro3
LightningRod
- Joined
- Mar 29, 2003
- Messages
- 8,702
I just put together a new build using the following parts:
P5N32-E SLI Plus with latest bios 602
Conroe E6700 Engineering Sample with lapped IHS
2gb Corsair 8500C5 Micron DGMH
Scythe Infinity
8800GTX
Zippy 700W PSU
No matter what I do, I can't get a stable overclock. The weird thing is that independantly, nearly all of the parts are known good. For example, the E6700 does 4.4ghz orthos stable on phase and 4ghz on water. It's a STRONG chip and is lapped perfectly flat. The Corsair does awesome speeds on my P5W-DH, and the Zippy has been running strong for over a year.
Therefore, I'm 99% sure my issues are related to my motherboard. The behaviour is the strangest I've ever seen from any componet - the ONLY way to get stable, even at stock speeds is to run the board in "Linked" and "sync" mode. I can even overclock a bit like this, up until around 1420mhz FSB (which should be 3.6ghz but is only 3.55...). The problem with this is that my memory runs somewhere around half of it's rated speed; 355mhz. If I set it to unlinked or ANY other divider, including 1/1, the board is simply not stable, even at stock speeds. It's the most bizzare thing in the world; at linked/sync settings, I'm 8+ hour orthos stable at 3.55ghz and memory at 355mhz. If I change ANYTHING regarding the memory, it simply doesn't work. I've even swapped out this with 2GB of OCZ 8500 DGMH and it does the SAME EXACT THING.
I've already tried changing voltages, and it helped to a degree. SO far I've found my best results to be:
CPU: 1.5V
Ram: 2.3V
1.2v HT Voltage: 1.35v
NB Core Voltage: 1.5v
SB Core Voltage: 1.4v
CPU VTT Voltage: 1.4v
The only possible thing that I can think of is the chipset cooling. The northbridge is incredibly hot - my temp probe is claiming the HEATSINK is around 70C. The southbridge is burning hot too, but I've calmed that down by clipping on the fan from my A8N32-SLI onto the heatpipe sink. I've ordered 2 Thermalright HR-05's and some nice copper vreg sinks to cool the board down, but I still think there is something else going on.
Any ideas? I just want to be able to take advantage of my golden chip...
__________________
P5N32-E SLI Plus with latest bios 602
Conroe E6700 Engineering Sample with lapped IHS
2gb Corsair 8500C5 Micron DGMH
Scythe Infinity
8800GTX
Zippy 700W PSU
No matter what I do, I can't get a stable overclock. The weird thing is that independantly, nearly all of the parts are known good. For example, the E6700 does 4.4ghz orthos stable on phase and 4ghz on water. It's a STRONG chip and is lapped perfectly flat. The Corsair does awesome speeds on my P5W-DH, and the Zippy has been running strong for over a year.
Therefore, I'm 99% sure my issues are related to my motherboard. The behaviour is the strangest I've ever seen from any componet - the ONLY way to get stable, even at stock speeds is to run the board in "Linked" and "sync" mode. I can even overclock a bit like this, up until around 1420mhz FSB (which should be 3.6ghz but is only 3.55...). The problem with this is that my memory runs somewhere around half of it's rated speed; 355mhz. If I set it to unlinked or ANY other divider, including 1/1, the board is simply not stable, even at stock speeds. It's the most bizzare thing in the world; at linked/sync settings, I'm 8+ hour orthos stable at 3.55ghz and memory at 355mhz. If I change ANYTHING regarding the memory, it simply doesn't work. I've even swapped out this with 2GB of OCZ 8500 DGMH and it does the SAME EXACT THING.
I've already tried changing voltages, and it helped to a degree. SO far I've found my best results to be:
CPU: 1.5V
Ram: 2.3V
1.2v HT Voltage: 1.35v
NB Core Voltage: 1.5v
SB Core Voltage: 1.4v
CPU VTT Voltage: 1.4v
The only possible thing that I can think of is the chipset cooling. The northbridge is incredibly hot - my temp probe is claiming the HEATSINK is around 70C. The southbridge is burning hot too, but I've calmed that down by clipping on the fan from my A8N32-SLI onto the heatpipe sink. I've ordered 2 Thermalright HR-05's and some nice copper vreg sinks to cool the board down, but I still think there is something else going on.
Any ideas? I just want to be able to take advantage of my golden chip...
__________________