Hi all. I've recently gotten myself a Q6600 (G0) and an EP45-UD3P, and set about overclocking it. I managed to get over some early bumps myself by searching through these forums, and now I'm hoping people can help me take it further. So far I've got it up to 3GHz, and I'd like to see how much higher I can go. This will probably look long, but just because I'll try to provide up front all the info I've seen people asked for in these sorts of threads.
The first thing I'm wondering about is temperatures.
So far, at 3GHz (333x9), I've run Prime95's all-around stress test for 8 hours with no errors, and no cores getting over 60C. The maximum-CPU-heat stress test will drive the cores up to about 69C at the highest from what I've seen - I once tried to run that overnight, and judging from the log it left my computer rebooted after about two hours, but I have no idea if that was because of an error, or just Windows Update or something.
As far as actual gaming goes, so far nothing I own has managed to drive core temps up past 57C or so. At idle, the cores generally sit around 35-40C, and the temperature EasyTune labels "CPU" is usually more around 27-30C.
As I said, I'd like to see how fast I can get this thing running, so any tips or suggestions are very welcome. Since I have DDR2-1066 RAM, am I right that I'd get best performance with an FSB of 533MHz? Is that a viable goal without liquid cooling?
Hardware:
Chip: Intel Q6600 G0
HSF: Xigmatek HDT-S1283
Thermal Paste: Generic, says it's 25% silver (I assume I should replace this when I can?)
Mobo: GA-EP45-UD3P
RAM: 2x2GB of OCZ Reaper Hpc DDR2-1066 in dual channel (slots 1+3)
GPU: EVGA GeForce 8800GTS SSC 640MB
PSU: Corsair TX650W
Case: Antec Sonata II (only has one fan, but it's outward-blowing, with its intake about 2in from the exhaust of the CPU HSF)
BIOS Settings
(adapting the template lsdmeasap put up in other threads -- any number in round brackets is the BIOS' "normal" value for that field, not my current setting.)
MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............: Auto
CPU Clock Ratio ..........................: 9x
CPU Frequency ...........................: 3GHz (333x9)
Clock Chip Control
Standard Clock Control
CPU Host Clock Control..................: [Enabled]
CPU Host Frequency (Mhz) ............: 333Mhz
PCI Express Frequency (Mhz) .........: 100
Advanced Clock Control [Press Enter]
CPU Clock Drive...........................: 800mV
PCI Express Clock Drive.................: 900mV
CPU Clock Skew (ps)....................: 0ps
MCH Clock Skew (ps)...................: 0ps
DRAM Performance Control
Performance Enhance...................: [STANDARD]
Extreme Memory Profile (X.M.P.).....: Disabled
(G)MCH Frequency Latch...............: 333MHz
System Memory Multiplier ..............: 3.20B
Memory Frequency (Mhz) ..............: 1066
DRAM Timing Selectable ................: [Manual]
Standard Timing Control
CAS Latency Time........................: 5
tRCD .........................................: 5
tRP'...........................................: 5
tRAS..........................................: 15
Advanced Timing Control
tRRD...................................(4)........ Auto
tWTR..................................(4)........ Auto
tWR....................................(8)........ Auto
tRFC...................................(72)....... Auto
tRTP...................................(4)........ Auto
Command Rate (CMD) ............(0)........: Auto
Channels A & B (both are the same)
Static tRead Value....................(8)..: Auto
tRD Phase0 Adjustment..............(0)..: Auto
tRD Phase1 Adjustment..............(0)..: Auto
tRD Phase2 Adjustment .............(0)..: Auto
tRD Phase3 Adjustment.............(0)..: Auto
Trd2rd(Different Rank)...............(8)..: Auto
Twr2wr(Different Rank)..............(8)..: Auto
Twr2rd(Different Rank)..............(7)..: Auto
Trd2wr(Same/Diff Rank).............(9)..: Auto
Dimm1 Clock Skew Control...............: Auto
Dimm2 Clock Skew Control...............: Auto
DDR Write Training.........................: Auto
All the DIMM Driving options are Auto as well.
Motherboard Voltage Control
Voltage Type.………... Manual
Load-Line Calibration..................: Enabled
CPU
CPU Vcore….………......(1.325V)........: 1.35V
CPU Termination…..... (1.2V)...........: Auto
CPU PLL…………………....(1.5V)...........: Auto
CPU Reference…………....(0.76V).......: Auto
MCH/ICH
MCH Core…………….....(1.100V)...........: Auto
MCH Reference….…….(0.760V)...........; Auto
MCH/DRAM Ref.…......(0.900V)...........: Auto
ICH I/O……………….....(1.500V)............: Auto
ICH Core…………...……(1.100V)............: Auto
DRAM
DRAM Voltage ……....(1.800V)............: Auto
DRAM Termination .…(0.900V)............: Auto
Channel A Reference (0.900V)............: Auto
Channel B Reference (0.900V)............: Auto
Advanced Settings
Limit CPUID Max. to 3.....................: [Disabled]
No-Execute Memory Protect............: [Enabled]
CPU Enhanced Halt (C1E)................: [Disabled]
CPU Thermal Monitor 2(TM2) ...........: [Enabled]
CPU EIST Function.........................: [Disabled]
Virtualization Technology................: [Enabled]
I think that's everything. Just let me know if you need any more info. Thanks in advance to anyone who takes the time to help. :)
The first thing I'm wondering about is temperatures.
- What exactly is the temperature that shows up as "CPU" in EasyTune? It's often a full 10C below my core temperatures, or more under high thermal load from Prime95.
- What's the temperature marked "System" in EasyTune? It barely ever seems to change, no matter how hot the processor gets, and is much hotter than the "CPU" temp at idle (usually 44-45, as opposed to 27-30 for "CPU").
- How consistent should my core temperatures be? I usually have at least 5C difference between the hottest and the coolest, and more than that when Prime95 drives it as hot as it can. Might I have screwed up my thermal paste application?
- Where should I start worrying about heat on a G0 Q6600? When a core hits 70C?
So far, at 3GHz (333x9), I've run Prime95's all-around stress test for 8 hours with no errors, and no cores getting over 60C. The maximum-CPU-heat stress test will drive the cores up to about 69C at the highest from what I've seen - I once tried to run that overnight, and judging from the log it left my computer rebooted after about two hours, but I have no idea if that was because of an error, or just Windows Update or something.
As far as actual gaming goes, so far nothing I own has managed to drive core temps up past 57C or so. At idle, the cores generally sit around 35-40C, and the temperature EasyTune labels "CPU" is usually more around 27-30C.
As I said, I'd like to see how fast I can get this thing running, so any tips or suggestions are very welcome. Since I have DDR2-1066 RAM, am I right that I'd get best performance with an FSB of 533MHz? Is that a viable goal without liquid cooling?
Hardware:
Chip: Intel Q6600 G0
HSF: Xigmatek HDT-S1283
Thermal Paste: Generic, says it's 25% silver (I assume I should replace this when I can?)
Mobo: GA-EP45-UD3P
RAM: 2x2GB of OCZ Reaper Hpc DDR2-1066 in dual channel (slots 1+3)
GPU: EVGA GeForce 8800GTS SSC 640MB
PSU: Corsair TX650W
Case: Antec Sonata II (only has one fan, but it's outward-blowing, with its intake about 2in from the exhaust of the CPU HSF)
BIOS Settings
(adapting the template lsdmeasap put up in other threads -- any number in round brackets is the BIOS' "normal" value for that field, not my current setting.)
MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............: Auto
CPU Clock Ratio ..........................: 9x
CPU Frequency ...........................: 3GHz (333x9)
Clock Chip Control
Standard Clock Control
CPU Host Clock Control..................: [Enabled]
CPU Host Frequency (Mhz) ............: 333Mhz
PCI Express Frequency (Mhz) .........: 100
Advanced Clock Control [Press Enter]
CPU Clock Drive...........................: 800mV
PCI Express Clock Drive.................: 900mV
CPU Clock Skew (ps)....................: 0ps
MCH Clock Skew (ps)...................: 0ps
DRAM Performance Control
Performance Enhance...................: [STANDARD]
Extreme Memory Profile (X.M.P.).....: Disabled
(G)MCH Frequency Latch...............: 333MHz
System Memory Multiplier ..............: 3.20B
Memory Frequency (Mhz) ..............: 1066
DRAM Timing Selectable ................: [Manual]
Standard Timing Control
CAS Latency Time........................: 5
tRCD .........................................: 5
tRP'...........................................: 5
tRAS..........................................: 15
Advanced Timing Control
tRRD...................................(4)........ Auto
tWTR..................................(4)........ Auto
tWR....................................(8)........ Auto
tRFC...................................(72)....... Auto
tRTP...................................(4)........ Auto
Command Rate (CMD) ............(0)........: Auto
Channels A & B (both are the same)
Static tRead Value....................(8)..: Auto
tRD Phase0 Adjustment..............(0)..: Auto
tRD Phase1 Adjustment..............(0)..: Auto
tRD Phase2 Adjustment .............(0)..: Auto
tRD Phase3 Adjustment.............(0)..: Auto
Trd2rd(Different Rank)...............(8)..: Auto
Twr2wr(Different Rank)..............(8)..: Auto
Twr2rd(Different Rank)..............(7)..: Auto
Trd2wr(Same/Diff Rank).............(9)..: Auto
Dimm1 Clock Skew Control...............: Auto
Dimm2 Clock Skew Control...............: Auto
DDR Write Training.........................: Auto
All the DIMM Driving options are Auto as well.
Motherboard Voltage Control
Voltage Type.………... Manual
Load-Line Calibration..................: Enabled
CPU
CPU Vcore….………......(1.325V)........: 1.35V
CPU Termination…..... (1.2V)...........: Auto
CPU PLL…………………....(1.5V)...........: Auto
CPU Reference…………....(0.76V).......: Auto
MCH/ICH
MCH Core…………….....(1.100V)...........: Auto
MCH Reference….…….(0.760V)...........; Auto
MCH/DRAM Ref.…......(0.900V)...........: Auto
ICH I/O……………….....(1.500V)............: Auto
ICH Core…………...……(1.100V)............: Auto
DRAM
DRAM Voltage ……....(1.800V)............: Auto
DRAM Termination .…(0.900V)............: Auto
Channel A Reference (0.900V)............: Auto
Channel B Reference (0.900V)............: Auto
Advanced Settings
Limit CPUID Max. to 3.....................: [Disabled]
No-Execute Memory Protect............: [Enabled]
CPU Enhanced Halt (C1E)................: [Disabled]
CPU Thermal Monitor 2(TM2) ...........: [Enabled]
CPU EIST Function.........................: [Disabled]
Virtualization Technology................: [Enabled]
- One odd thing I've noticed -- both EasyTune and CPU-Z say my memory's max bandwidth is PC2-6400. Anyone know what's up with that?
- I haven't yet tested to see how low I can get the CPU's Vcore at current settings, so the 1.35V is probably overkill.
- My RAM is labeled as 2.2V, and the mobo's 'Auto' setting seems to be doing it right, as EasyTune sees a DRAM voltage of 2.112V.
I think that's everything. Just let me know if you need any more info. Thanks in advance to anyone who takes the time to help. :)
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