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Old 3 Weeks Ago   #1 (permalink)
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Default E6550 OC problem
I have a problem with overclocking my E6550 CPU.

My PC:

CPU:E6550
MB:Gigabyte P35 DQ6
RAM:Corsair Twin2X4096-8500C5C (2X2GB DDR2 1066MHz)

I have overclocked it to 3.36GHz but after some time 15-20 minutes running Prime 95 the system freezes.

This is how its set in Bios:

Robust graphics booster=Auto
CPU Clock Ratio=x7
CPU Host Clock Control=Enabled
CPU Host Frequency=480MHz
PCI Express Frequency=100MHz
C.I.A.2=Disabled
System Memory Multiplier:2.0
Memory Frequency=960MHz
DRAM Latency:5-5-5-18

System voltage control=Manual
DDR2 Over Voltage=+0.25V
PCI-E Over Voltage=Normal
FSB Over Voltage=+0.10V
MCH Over Voltage=+0.10V
CPU Voltage=1.42500V

Whats the problem here?
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System: Gaming & Modding Machine
CPU
E6550 @3.34GHz		 Motherboard
Gigabyte P35 DQ6		 Memory
Corsair DDR2 TWIN2X4096-8500C5C 1066MHz 		Graphics Card
Zotac GTX 260 Overclocked
Hard Drive
WD 640GB SATA		 Power Supply
Xilence 600W
CPU cooling
TermalTake Big Typhoon 120 VX		 OS
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Old 3 Weeks Ago   #2 (permalink)
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Try raising the MCH and FSB voltages to +0.20v.

System: Craptastic C0
CPU
E8400 C0 4.0Ghz @ 1.41v		 Motherboard
Gigabyte EP45 UD3P		 Memory
OCZ Blade LV 4GB 1066 @ 1256 CL5 1.9v 		Graphics Card
Sapphire HD4850 Vapor-X 1GB
Hard Drive
Hitachi 250GB, WD 640GB		 Sound Card
Asus Xonar D1		 Power Supply
OCZ GameXtream 600w		 Case
Antec P183
CPU cooling
TRUE 120+ Scythe S-Flex 1900		 GPU cooling
Vapor-X cooling		 OS
Vista SP2 32-bit / Ubuntu 9.10 64-bit		 Monitor
Acer H223HQ 21.5" 1920x1080
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Old 3 Weeks Ago   #3 (permalink)
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When i set the System voltage control to Auto it was stable for over 3 Hours.

The FSBRAM ratio is 1:1

The Memory voltage is at 2.1V
__________________
System: Gaming & Modding Machine
CPU
E6550 @3.34GHz		 Motherboard
Gigabyte P35 DQ6		 Memory
Corsair DDR2 TWIN2X4096-8500C5C 1066MHz 		Graphics Card
Zotac GTX 260 Overclocked
Hard Drive
WD 640GB SATA		 Power Supply
Xilence 600W
CPU cooling
TermalTake Big Typhoon 120 VX		 OS
Windows XP Professional		 Monitor
Philips 190C LCD
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Old 3 Weeks Ago   #4 (permalink)
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Can the memory latency cause problems & make system to freeze?

I can set it to:

5-5-5-15

5-5-5-18

5-6-6-18

Does anyone have the same PC as i & had the same problem?

Please help.
__________________
System: Gaming & Modding Machine
CPU
E6550 @3.34GHz		 Motherboard
Gigabyte P35 DQ6		 Memory
Corsair DDR2 TWIN2X4096-8500C5C 1066MHz 		Graphics Card
Zotac GTX 260 Overclocked
Hard Drive
WD 640GB SATA		 Power Supply
Xilence 600W
CPU cooling
TermalTake Big Typhoon 120 VX		 OS
Windows XP Professional		 Monitor
Philips 190C LCD
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Old 3 Weeks Ago   #5 (permalink)
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Like Acoma said raise FSB and MCH volt's.
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System: My Foot Rest
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E8400EO@4.5@1.36		 Motherboard
GA-EP45-UD3P F10e		 Memory
4G G.SKILL 1066/F2's 		Graphics Card
Zotac 9600 GT
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320G+80G		 Sound Card
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Old 3 Weeks Ago   #6 (permalink)
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I have changed some parameters in Bios & run Orthos.

DRAM Latency:5-5-5-15

System voltage control=Manual
DDR2 Over Voltage=+0.25V
PCI-E Over Voltage=Normal
FSB Over Voltage=+0.05V
MCH Over Voltage=+0.025V
CPU Voltage=1.36875V

Orthos run for 1 Hour & 8 Minutes & then froze.
__________________
System: Gaming & Modding Machine
CPU
E6550 @3.34GHz		 Motherboard
Gigabyte P35 DQ6		 Memory
Corsair DDR2 TWIN2X4096-8500C5C 1066MHz 		Graphics Card
Zotac GTX 260 Overclocked
Hard Drive
WD 640GB SATA		 Power Supply
Xilence 600W
CPU cooling
TermalTake Big Typhoon 120 VX		 OS
Windows XP Professional		 Monitor
Philips 190C LCD
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Old 3 Weeks Ago   #7 (permalink)
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FSB voltage is too low, or is that a typo? Your DDR2 voltage is also too low, it should be +0.3v (which makes it 2.1v). If that all still doesn't work, you need to raise the CPU voltage.

System: Craptastic C0
CPU
E8400 C0 4.0Ghz @ 1.41v		 Motherboard
Gigabyte EP45 UD3P		 Memory
OCZ Blade LV 4GB 1066 @ 1256 CL5 1.9v 		Graphics Card
Sapphire HD4850 Vapor-X 1GB
Hard Drive
Hitachi 250GB, WD 640GB		 Sound Card
Asus Xonar D1		 Power Supply
OCZ GameXtream 600w		 Case
Antec P183
CPU cooling
TRUE 120+ Scythe S-Flex 1900		 GPU cooling
Vapor-X cooling		 OS
Vista SP2 32-bit / Ubuntu 9.10 64-bit		 Monitor
Acer H223HQ 21.5" 1920x1080
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Old 3 Weeks Ago   #8 (permalink)
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The DDR2 voltage is set to +0.25V which makes it 2.11V!
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System: Gaming & Modding Machine
CPU
E6550 @3.34GHz		 Motherboard
Gigabyte P35 DQ6		 Memory
Corsair DDR2 TWIN2X4096-8500C5C 1066MHz 		Graphics Card
Zotac GTX 260 Overclocked
Hard Drive
WD 640GB SATA		 Power Supply
Xilence 600W
CPU cooling
TermalTake Big Typhoon 120 VX		 OS
Windows XP Professional		 Monitor
Philips 190C LCD
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Old 3 Weeks Ago   #9 (permalink)
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I have tested my CPU with Orthos with Small FFT torture test to see if its stable or if it needs more voltage.

After 8 hours of testing the CPU everything was ok,no errors.

Then i started Memtest86 to test the memory.

Its been 5 Hours 30 minutes now & no errors,the memtest86 is still running.

This is strange but when i run the Blend test system freezes after some time.

What is causing the system to freeze?
__________________
System: Gaming & Modding Machine
CPU
E6550 @3.34GHz		 Motherboard
Gigabyte P35 DQ6		 Memory
Corsair DDR2 TWIN2X4096-8500C5C 1066MHz 		Graphics Card
Zotac GTX 260 Overclocked
Hard Drive
WD 640GB SATA		 Power Supply
Xilence 600W
CPU cooling
TermalTake Big Typhoon 120 VX		 OS
Windows XP Professional		 Monitor
Philips 190C LCD
Last edited by Tnlgg : 3 Weeks Ago at 01:32 PM
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Old 3 Weeks Ago   #10 (permalink)
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Increase MCH.
__________________

Without question the greatest invention in the history of mankind is beer. Oh, I grant you the wheel was also a fine invention, but a wheel does not go as well with pizza.
Join Overclock.nets
HWbot team here!
9.770 super pi

System: My Foot Rest
CPU
E8400EO@4.5@1.36		 Motherboard
GA-EP45-UD3P F10e		 Memory
4G G.SKILL 1066/F2's 		Graphics Card
Zotac 9600 GT
Hard Drive
320G+80G		 Sound Card
Creative Live		 Power Supply
600W MSI turbo=1.21jigawatts		 Case
Ultra Gladiator
CPU cooling
XIGMATEX HDT S1283, NB Extreme Spirit II		 GPU cooling
Big Zalman		 OS
Windows XP Black/Windows 7 RC		 Monitor
Samsung 930B
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