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Help with Prime95

post #1 of 3
Thread Starter 
A while back I was overclocking a Q9450. When using prime95 I was able to get all, but one of the threads decently stable. One of my threads would continually stop almost immediately. It was always that same thread in Prime95 that had this problem.
I am wondering if the threads on Prime95 always correspond to certain cores in my processor. Like if the second thread continually stops then it is core 2 in my processor that is having problems.
If it does not work this way how do you find out which core is giving you problems?
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ζ Puppis
(17 items)
 
γ Serpentis
(9 items)
 
α Centauri
(12 items)
 
CPUMotherboardGraphicsRAM
3570k Gigabyte Z77X-UD5H Club 3D 295x2 (x2) Patriot Viper (4x8GB) 
Hard DriveHard DriveCoolingCooling
Samsung 840 EVO Western Digital Black (750GB) (x2) EK Supremacy EVO Full Nickle EK-FC R9-295X2 - Nickel (x2) 
CoolingCoolingOSMonitor
Swiftech MCP655 (x2) Bitfenix Spectre PWM 140mm (x12) Windows 8.1 Samsung S27A850D (x6) 
MonitorKeyboardPowerCase
Wacom 24HD Touch Das Keyboard 4 Ultimate (MX Blue) Enermax Maxrevo 1500 Lian-Li PC-A71F 
Other
AverMedia Live Gamer HD 
CPUMotherboardGraphicsRAM
Intel Q9450 EVGA nForce 780i SLI EVGA 9800GT Kingston HyperX DDR2 (4x2GB) 
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Intel 320 SSD 160 GB WD Caviar Black 2TB WD Caviar Black 2TB WD Caviar Black 2TB 
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post #2 of 3
Is the core the problem and your cpu just doesn't need more vcore? If you up the vcore, do all the threads/cores work?
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Baby Blue
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i7-2600K OC ASUS P8P67 DELUXE EVGA GTX780 Dual Classified Hydro Copper 16GB G.SKILL Ripjaws X Series DDR3 1600 
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Crucial M500 960GB 1.5TB Western Digital ASUS 24X XSPC Raystorm CPU Block 
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PrimoChill PrimoFlex Advanced LRT Tubing Arctic Silver 5 Thermal Compound Bitspower G1/4 1/2" 3/4" Compression fittings Bitspower Dual D5 Mod 
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Black Ice SR1 480 Rad 2x Black Ice SR1 360 Rad Black Ice SR1 240 2x D5 Vario Pump - Koolance with Bitspower Blue... 
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Phobya Dual 5.25" Bay Reservoir FrozenQ Blue Helix Windows 7 64-bit 2 x 27" QX2710 @ 120Hz (2560x1440) 
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post #3 of 3
Thread Starter 
I think it is a problem with my one core. I was able to get it stable at 3.4ghz, but if I raise the frequency any higher Prime95 continually shows my second thread stopping.
For that speed I needed about 1.36v, I don’t think I should be going any higher.
I also tried raising the frequency higher to see what the rest of the chip could do. I got to about 3.8ghz without too many problems, in Prime95 my second thread would stop almost instantly, but the other 3 kept running fine. I only tested for about 15 or 20 minutes.
ζ Puppis
(17 items)
 
γ Serpentis
(9 items)
 
α Centauri
(12 items)
 
CPUMotherboardGraphicsRAM
3570k Gigabyte Z77X-UD5H Club 3D 295x2 (x2) Patriot Viper (4x8GB) 
Hard DriveHard DriveCoolingCooling
Samsung 840 EVO Western Digital Black (750GB) (x2) EK Supremacy EVO Full Nickle EK-FC R9-295X2 - Nickel (x2) 
CoolingCoolingOSMonitor
Swiftech MCP655 (x2) Bitfenix Spectre PWM 140mm (x12) Windows 8.1 Samsung S27A850D (x6) 
MonitorKeyboardPowerCase
Wacom 24HD Touch Das Keyboard 4 Ultimate (MX Blue) Enermax Maxrevo 1500 Lian-Li PC-A71F 
Other
AverMedia Live Gamer HD 
CPUMotherboardGraphicsRAM
Intel Q9450 EVGA nForce 780i SLI EVGA 9800GT Kingston HyperX DDR2 (4x2GB) 
Hard DriveHard DriveHard DriveHard Drive
Intel 320 SSD 160 GB WD Caviar Black 2TB WD Caviar Black 2TB WD Caviar Black 2TB 
Hard DriveHard DriveOSCase
WD Caviar Black 2TB WD Caviar Black 2TB Windows Server 2012 R2 HP Blackbird 002 
  hide details  
Reply
ζ Puppis
(17 items)
 
γ Serpentis
(9 items)
 
α Centauri
(12 items)
 
CPUMotherboardGraphicsRAM
3570k Gigabyte Z77X-UD5H Club 3D 295x2 (x2) Patriot Viper (4x8GB) 
Hard DriveHard DriveCoolingCooling
Samsung 840 EVO Western Digital Black (750GB) (x2) EK Supremacy EVO Full Nickle EK-FC R9-295X2 - Nickel (x2) 
CoolingCoolingOSMonitor
Swiftech MCP655 (x2) Bitfenix Spectre PWM 140mm (x12) Windows 8.1 Samsung S27A850D (x6) 
MonitorKeyboardPowerCase
Wacom 24HD Touch Das Keyboard 4 Ultimate (MX Blue) Enermax Maxrevo 1500 Lian-Li PC-A71F 
Other
AverMedia Live Gamer HD 
CPUMotherboardGraphicsRAM
Intel Q9450 EVGA nForce 780i SLI EVGA 9800GT Kingston HyperX DDR2 (4x2GB) 
Hard DriveHard DriveHard DriveHard Drive
Intel 320 SSD 160 GB WD Caviar Black 2TB WD Caviar Black 2TB WD Caviar Black 2TB 
Hard DriveHard DriveOSCase
WD Caviar Black 2TB WD Caviar Black 2TB Windows Server 2012 R2 HP Blackbird 002 
  hide details  
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