I've spent the last two days attempting to overclock my system even a bit and I'm coming up with unreasonable results. Could someone familiar with my setup offer some guidance? I haven't overclocked in a number of years and only ever on AMD, so I am a little bit out of my comfort zone and concerned if I'm doing something stupid.
Problem: Even with 40% CPU overclock, 3dmark06 scores only increase 10% at the cost of at least a 20c increase!
* Yes, I know that 3dmark06 is overrated, but it's what everyone uses so it gives me something to compare my overclocking improvements to other people who, with a similar setup but only an E6300, get 16,000+ scores.
Hardware
C2D E6600
eVGA 680i
2x1gb Crucial Ballistix PC6400 4-4-4-12
eVGA 8800 GTX
Tuniq 120 HSF
P&C Power & Cooling 750w Silencer
1x120 intake fan (front of case)
1x120 exhaust fan (rear)
3x140 intake fans (panel)
All of the following configurations included turning off CPU Thermal Control, C1E Enhanced Halt State, Intel Speedstep, Spread Spectrums, SLI-Ready Memory, Linkboost, Smartfan and NVidia GPU Ex. Additionally, they are all done using the Linked and Synced 1:1 method. All heat/stress testing done with Prime95. All temperature readings done with Core Temp.
Default Configuration: FSB 800, 2400mhz
Stock settings, voltages autoset, timings autoset.
4-4-4-14 1T
FSB: 800 (2400mhz)
Core: 1.2v
FSB: 1.2v
RAM: 1.85v (Crucial says the RAM should be 2.2v)
SPP: 1.2v
MCP: 1.5v
HT/SPP: 1.2v
Idle: 38c
Stress: 45c
3dMark06: 9,796
Default Configuration: FSB 1200, 2700mhz
Stock settings, voltages autoset, timings manually set.
4-4-4-14 1T
FSB: 1200 (2700mhz)
Core: 1.2v
FSB: 1.2v
RAM: 1.85v
SPP: 1.2v
MCP: 1.5v
HT/SPP: 1.2v
Idle: 39c
Stress: 51c
3dMark06: 10,241
Default Configuration: FSB 1300, 2925mhz
Stock settings, voltages autoset, timings auto set.
4-5-5-15 1T
FSB: 1200 (2700mhz)
Core: 1.2v
FSB: 1.2v
RAM: 1.85v
SPP: 1.2v
MCP: 1.5v
HT/SPP: 1.2v
Idle: 39c
Stress: 51c
3dMark06: 10,464
Default Configuration: FSB 1400, 3150mhz
Stock settings, voltages autoset, timings manually and auto set.
4-4-4-12 2T (manual)
5-5-5-15-1T (manual)
5-5-5-17 2T (autoset)
FSB: 1200 (2700mhz)
Core: 1.2v
FSB: 1.2v
RAM: 1.85v
SPP: 1.2v
MCP: 1.5v
HT/SPP: 1.2v
Idle: 45c
Stress: 70c
3dMark06: 10,635
Default Configuration: FSB 1500, 3375mhz
Stock settings, voltages autoset and manually set, timings manually set.
4-4-4-12 2T / 4-4-4-12 1T
3-3-3-9 2T / 3-3-3-9 1T
FSB: 1200 (2700mhz)
Core: 1.2v
FSB: 1.5v (manually set - default 1.2v)
RAM: 2.2v (manually set - default 1.85v)
SPP: 1.2v
MCP: 1.5v
HT/SPP: 1.2v
Idle: 48c
Stress: 71c
3dMark06: 10,782 to 10822
Problem: Even with 40% CPU overclock, 3dmark06 scores only increase 10% at the cost of at least a 20c increase!
* Yes, I know that 3dmark06 is overrated, but it's what everyone uses so it gives me something to compare my overclocking improvements to other people who, with a similar setup but only an E6300, get 16,000+ scores.
Hardware
C2D E6600
eVGA 680i
2x1gb Crucial Ballistix PC6400 4-4-4-12
eVGA 8800 GTX
Tuniq 120 HSF
P&C Power & Cooling 750w Silencer
1x120 intake fan (front of case)
1x120 exhaust fan (rear)
3x140 intake fans (panel)
All of the following configurations included turning off CPU Thermal Control, C1E Enhanced Halt State, Intel Speedstep, Spread Spectrums, SLI-Ready Memory, Linkboost, Smartfan and NVidia GPU Ex. Additionally, they are all done using the Linked and Synced 1:1 method. All heat/stress testing done with Prime95. All temperature readings done with Core Temp.
Default Configuration: FSB 800, 2400mhz
Stock settings, voltages autoset, timings autoset.
4-4-4-14 1T
FSB: 800 (2400mhz)
Core: 1.2v
FSB: 1.2v
RAM: 1.85v (Crucial says the RAM should be 2.2v)
SPP: 1.2v
MCP: 1.5v
HT/SPP: 1.2v
Idle: 38c
Stress: 45c
3dMark06: 9,796
Default Configuration: FSB 1200, 2700mhz
Stock settings, voltages autoset, timings manually set.
4-4-4-14 1T
FSB: 1200 (2700mhz)
Core: 1.2v
FSB: 1.2v
RAM: 1.85v
SPP: 1.2v
MCP: 1.5v
HT/SPP: 1.2v
Idle: 39c
Stress: 51c
3dMark06: 10,241
Default Configuration: FSB 1300, 2925mhz
Stock settings, voltages autoset, timings auto set.
4-5-5-15 1T
FSB: 1200 (2700mhz)
Core: 1.2v
FSB: 1.2v
RAM: 1.85v
SPP: 1.2v
MCP: 1.5v
HT/SPP: 1.2v
Idle: 39c
Stress: 51c
3dMark06: 10,464
Default Configuration: FSB 1400, 3150mhz
Stock settings, voltages autoset, timings manually and auto set.
4-4-4-12 2T (manual)
5-5-5-15-1T (manual)
5-5-5-17 2T (autoset)
FSB: 1200 (2700mhz)
Core: 1.2v
FSB: 1.2v
RAM: 1.85v
SPP: 1.2v
MCP: 1.5v
HT/SPP: 1.2v
Idle: 45c
Stress: 70c
3dMark06: 10,635
Default Configuration: FSB 1500, 3375mhz
Stock settings, voltages autoset and manually set, timings manually set.
4-4-4-12 2T / 4-4-4-12 1T
3-3-3-9 2T / 3-3-3-9 1T
FSB: 1200 (2700mhz)
Core: 1.2v
FSB: 1.5v (manually set - default 1.2v)
RAM: 2.2v (manually set - default 1.85v)
SPP: 1.2v
MCP: 1.5v
HT/SPP: 1.2v
Idle: 48c
Stress: 71c
3dMark06: 10,782 to 10822