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Hi,
Thought I would share my experience and settings with the following components.
Motherboard : Gigabyte EP45-UD3R
CPU Processor: Intel Core 2 Quad Q9550 Yorkfield 3.0GHz 1333FSB 12MB
Memory : F2-8500CL5D-4GBPK PC2-8500 2x2GB (2.0~2.1v)
I am by no means an experienced overclocker, so it was all based on reading up around the Net, and a lot of trial and error (BSODs anyone?), the result of which I have finally had it stabilized at the following settings:
Robust Graphics Booster............ [Fast]
CPU Clock Ratio........................ [ 8X ]
Fine CPU Clock Ratio................. [+0.5]
CPU Host Clock Control.............. [Enabled]
CPU Host Frequency (Mhz)......... [ 400]
PCI Express Frequency (Mhz)...... [ 100]
C.I.A.2.................................... [Disabled]
Performance Enhance................ [Standard]
Extreme Memory Profile (X.M.P.).. [Auto]
(G)MCH Frequency Latch............ [Auto]
System Memory Multiplier (SPD)... [2.40B]
Memory Frequency (Mhz)... 1066... 960
DRAM Timing Selectable (SPD)..... [Manual]
CAS Latency Time............ 5...... [ 5 ]
tRCD.............................. 5...... [ 5 ]
tRP................................ 5...... [ 5 ]
tRAS............................ 15...... [ 15 ]
Load Line Calibration................. [Disabled]
CPU Vcore............. 1.18750V.... [1.29375V]
CPU Termination.... 1.200V........ [1.200V]
CPU PLL................ 1.500V........ [1.500V]
CPU Reference...... 0.760V........ [Auto]
MCH Core................... 1.100V... [Auto]
MCH Reference............ 0.760V... [Auto]
MCH/DRAM Reference... 0.900V... [Auto]
ICH I/O...................... 1.500V... [Auto]
ICH Core.................... 1.100V... [Auto]
DRAM Voltage............. 1.800V... [2.040V]
DRAM Termination....... 0.900V... [Auto]
Channel A Reference... 0.900V... [Auto]
Channel B Reference... 0.900V... [Auto]
Ran Prime95 for 10+ hours until 1 out of 4 workers finally called it a day after the 15th hour. Still, I thought 10 hours would have been more than sufficient torture for the machine?!
memtest86 the RAM as well, and it originally gave me a reading of 6400 errors for one of the sticks. Didn't have time to test the other, and thought I had a bad stick. I checked the BIOS, and lo and behold, the BIOS had the RAM voltage automatically set at 1.8v, and the latency was 5-7 something (can't remember, except they were way off). I had also OC'ed the machine to 3.66 Mhz via EasyTune6 originally, and was hit with random BSODs for two weeks.
I readjusted the RAM voltage to 2.00v as specified, readjusted the latency to read 5-5-5-15, re-tested RAM#1 in Slot 1, and RAM#2 in Slot 3 for 13+ passes, and they were clear of errors!
System runs fine as of this writing at 1600 FSB and 3.40 Ghz.
Still, I wonder if anyone has managed to overclock the memory frequency past 960, like trying to match it at 1066. I tried the corresponding multiplier for "D" at 400Mhz BUS, but it crashed as well. It only stabilized at 2.40B. In short, 800 and 960 works fine, but anything beyond 960 I get BSODs like IRQL_NOT_LESS_OR_EQUAL and MACHINE_CHECK_EXCEPTION. Sometimes it boots up to windows, stutters and crash. Other times it just kept rebooting and shutting down, over and over.
Anyway, I welcome any advice from anyone with regards to the settings. No intention of going the extreme overclocking route. I am just happy with a stable system and some moderate overclocking. Thanks.
Thought I would share my experience and settings with the following components.
Motherboard : Gigabyte EP45-UD3R
CPU Processor: Intel Core 2 Quad Q9550 Yorkfield 3.0GHz 1333FSB 12MB
Memory : F2-8500CL5D-4GBPK PC2-8500 2x2GB (2.0~2.1v)
I am by no means an experienced overclocker, so it was all based on reading up around the Net, and a lot of trial and error (BSODs anyone?), the result of which I have finally had it stabilized at the following settings:
Robust Graphics Booster............ [Fast]
CPU Clock Ratio........................ [ 8X ]
Fine CPU Clock Ratio................. [+0.5]
CPU Host Clock Control.............. [Enabled]
CPU Host Frequency (Mhz)......... [ 400]
PCI Express Frequency (Mhz)...... [ 100]
C.I.A.2.................................... [Disabled]
Performance Enhance................ [Standard]
Extreme Memory Profile (X.M.P.).. [Auto]
(G)MCH Frequency Latch............ [Auto]
System Memory Multiplier (SPD)... [2.40B]
Memory Frequency (Mhz)... 1066... 960
DRAM Timing Selectable (SPD)..... [Manual]
CAS Latency Time............ 5...... [ 5 ]
tRCD.............................. 5...... [ 5 ]
tRP................................ 5...... [ 5 ]
tRAS............................ 15...... [ 15 ]
Load Line Calibration................. [Disabled]
CPU Vcore............. 1.18750V.... [1.29375V]
CPU Termination.... 1.200V........ [1.200V]
CPU PLL................ 1.500V........ [1.500V]
CPU Reference...... 0.760V........ [Auto]
MCH Core................... 1.100V... [Auto]
MCH Reference............ 0.760V... [Auto]
MCH/DRAM Reference... 0.900V... [Auto]
ICH I/O...................... 1.500V... [Auto]
ICH Core.................... 1.100V... [Auto]
DRAM Voltage............. 1.800V... [2.040V]
DRAM Termination....... 0.900V... [Auto]
Channel A Reference... 0.900V... [Auto]
Channel B Reference... 0.900V... [Auto]
Ran Prime95 for 10+ hours until 1 out of 4 workers finally called it a day after the 15th hour. Still, I thought 10 hours would have been more than sufficient torture for the machine?!
memtest86 the RAM as well, and it originally gave me a reading of 6400 errors for one of the sticks. Didn't have time to test the other, and thought I had a bad stick. I checked the BIOS, and lo and behold, the BIOS had the RAM voltage automatically set at 1.8v, and the latency was 5-7 something (can't remember, except they were way off). I had also OC'ed the machine to 3.66 Mhz via EasyTune6 originally, and was hit with random BSODs for two weeks.
I readjusted the RAM voltage to 2.00v as specified, readjusted the latency to read 5-5-5-15, re-tested RAM#1 in Slot 1, and RAM#2 in Slot 3 for 13+ passes, and they were clear of errors!
System runs fine as of this writing at 1600 FSB and 3.40 Ghz.Still, I wonder if anyone has managed to overclock the memory frequency past 960, like trying to match it at 1066. I tried the corresponding multiplier for "D" at 400Mhz BUS, but it crashed as well. It only stabilized at 2.40B. In short, 800 and 960 works fine, but anything beyond 960 I get BSODs like IRQL_NOT_LESS_OR_EQUAL and MACHINE_CHECK_EXCEPTION. Sometimes it boots up to windows, stutters and crash. Other times it just kept rebooting and shutting down, over and over.
Anyway, I welcome any advice from anyone with regards to the settings. No intention of going the extreme overclocking route. I am just happy with a stable system and some moderate overclocking. Thanks.
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