- Mar 12, 2006
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My stated goal here is to reach the magic 400 FSB (x9 = 3600MHz).
Components (complete list linked in sig):
- processor: Intel Core 2 Duo E6600 (Stepping 6 Revision B2)
- motherboard: Asus P5W-DH Deluxe (1305 BIOS)
- RAM: OCZ Platinum 2GB(2x1GB) DDR2-800 5-5-5-15 2.1V
- heatsink: Zalman CNPS 9500 @ 7V w/ Arctic Silver 5 (a well-done application, nice and thin)
- PSU: Antec NeoHE 550 (all rails have been stable at 3.3V, 5.17V, and 12.20V for the last 6 months)
Stock:
At stock speeds, the system is absolutely stable, as it should be. CPU idles in the mid-low 30's Celsius, full load in the mid-40's, as measured by Asus PC Probe II via the motherboard sensor. Selected vCore is 1.30V, sensor also reads 1.30V. RAM operates at stock timings, speed, and voltage. Unless otherwise specified, all settings (including RAM) are left at Auto.
3.3GHz (367x9):
vCore selection at 1.45V, sensor reads 1.43V. Stable under Orthos for the quick 20 minutes I put it through while I ate, but I can always either up the vCore to 1.4625 and turn up the cooling if it isn't Orthos stable for 24 hours. Idle temperature is now low-40's Celsius, full load on both cores is now low-50's Celsius. Northbridge temperature is low-50's Celsius as well.
RAM is at 1:1 ratio with FSB for DDR2-734, but oddly enough, will not boot at anything faster than 5-6-6-18 timings. Might this have anything to do with the northbridge? Again, the RAM runs perfectly within spec at DDR2-800 5-5-5-15 at the same 2.1V.
I'm currently running FireFox with a couple tabs, iTunes with some music, and the Folding@Home GPGPU client with no signs of trouble.
3.4GHz (380x9):
Fails Orthos blend after 20-60 seconds at all voltages up to my personal limit of 1.5V (1.47V actual vCore). Prime95 stable on one core, both cores fails after roughly a minute. Same RAM/NB problem with looser timings. Temperatures climbed rapidly up to the mid-50's Celsius for the processor.
3.6GHz (400x9):
Fails to POST at all voltages.
3.6GHz (399x9 and 401x9):
Boots into Windows with no fuss, but only with at least a selection of 1.475V for vCore in BIOS, resulting in an actual voltage of 1.45V reported by the sensor. Same looser RAM/NB timings. Prime95 stable on one core, fails on two cores. Orthos blend fails after 2 seconds, RAM-heavy fails after 3 seconds, CPU-heavy fails after 1 second. Same results with 1.5V selected in BIOS for vCore, resulting in a sensor reading between 1.47V and 1.49V.
My primary goal is to reach 401FSB. My secondary goal is to tighten the RAM timings back up to their rated 5-5-5-15 or better. In a couple weeks, I plan on opening up the computer again, cleaning the dust out, replacing the the northbridge thermal paste with Arctic Silver 5, and trying again.
Components (complete list linked in sig):
- processor: Intel Core 2 Duo E6600 (Stepping 6 Revision B2)
- motherboard: Asus P5W-DH Deluxe (1305 BIOS)
- RAM: OCZ Platinum 2GB(2x1GB) DDR2-800 5-5-5-15 2.1V
- heatsink: Zalman CNPS 9500 @ 7V w/ Arctic Silver 5 (a well-done application, nice and thin)
- PSU: Antec NeoHE 550 (all rails have been stable at 3.3V, 5.17V, and 12.20V for the last 6 months)
Stock:
At stock speeds, the system is absolutely stable, as it should be. CPU idles in the mid-low 30's Celsius, full load in the mid-40's, as measured by Asus PC Probe II via the motherboard sensor. Selected vCore is 1.30V, sensor also reads 1.30V. RAM operates at stock timings, speed, and voltage. Unless otherwise specified, all settings (including RAM) are left at Auto.
3.3GHz (367x9):
vCore selection at 1.45V, sensor reads 1.43V. Stable under Orthos for the quick 20 minutes I put it through while I ate, but I can always either up the vCore to 1.4625 and turn up the cooling if it isn't Orthos stable for 24 hours. Idle temperature is now low-40's Celsius, full load on both cores is now low-50's Celsius. Northbridge temperature is low-50's Celsius as well.
RAM is at 1:1 ratio with FSB for DDR2-734, but oddly enough, will not boot at anything faster than 5-6-6-18 timings. Might this have anything to do with the northbridge? Again, the RAM runs perfectly within spec at DDR2-800 5-5-5-15 at the same 2.1V.
I'm currently running FireFox with a couple tabs, iTunes with some music, and the Folding@Home GPGPU client with no signs of trouble.
3.4GHz (380x9):
Fails Orthos blend after 20-60 seconds at all voltages up to my personal limit of 1.5V (1.47V actual vCore). Prime95 stable on one core, both cores fails after roughly a minute. Same RAM/NB problem with looser timings. Temperatures climbed rapidly up to the mid-50's Celsius for the processor.
3.6GHz (400x9):
Fails to POST at all voltages.
3.6GHz (399x9 and 401x9):
Boots into Windows with no fuss, but only with at least a selection of 1.475V for vCore in BIOS, resulting in an actual voltage of 1.45V reported by the sensor. Same looser RAM/NB timings. Prime95 stable on one core, fails on two cores. Orthos blend fails after 2 seconds, RAM-heavy fails after 3 seconds, CPU-heavy fails after 1 second. Same results with 1.5V selected in BIOS for vCore, resulting in a sensor reading between 1.47V and 1.49V.
My primary goal is to reach 401FSB. My secondary goal is to tighten the RAM timings back up to their rated 5-5-5-15 or better. In a couple weeks, I plan on opening up the computer again, cleaning the dust out, replacing the the northbridge thermal paste with Arctic Silver 5, and trying again.
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