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IBT says OK after 70 runs, but Prime fails after 7 hours?

post #1 of 5
Thread Starter 
I've been struggling with my first OC for a couple of weeks now and I've come as close as I can now. This is where I am at:

I've tested my RAM with MemTest 4 in Windows with 12 instances running at once, after 200% coverage I ended those tests - everything there was OK!

I've run ~70 runs in IBT with memory size of 9500MB - again Everything was OK!

I've run ~8 hours of Blend test in Prime95 with FTT time set to 5 minutes instead of 15 minutes, This is where it failed, getting Rounding error!.

What should I do now? Why did I get a rounding error in prime but all other tests are OK? My vcore is @ 1.280v already for just 4GHz.
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CPUMotherboardGraphicsRAM
Intel i7-970 @ 4GHz ASUS Rampage III Black Edition Gigabyte GTX 460 1GB SLI Corsair Vengence LP 24GB 1333Mhz 
Hard DriveOSMonitorKeyboard
OCZ Vertex 3 120GB Windows 7 Enterprise SyncMaster P2770 Microsoft Ergonomical 4000 
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CoolerMaster M850 850w Fractial Design R3 - White Steelseries IKARI Steelseries 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7-970 @ 4GHz ASUS Rampage III Black Edition Gigabyte GTX 460 1GB SLI Corsair Vengence LP 24GB 1333Mhz 
Hard DriveOSMonitorKeyboard
OCZ Vertex 3 120GB Windows 7 Enterprise SyncMaster P2770 Microsoft Ergonomical 4000 
PowerCaseMouseMouse Pad
CoolerMaster M850 850w Fractial Design R3 - White Steelseries IKARI Steelseries 
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post #2 of 5
I think you'll be ok

prime can be buggy sometimes

also all systems will fail at some point even at stock its just a matter of when.
post #3 of 5
Thread Starter 
Cool, thanks

Maybe it's just important that it works for my real work.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7-970 @ 4GHz ASUS Rampage III Black Edition Gigabyte GTX 460 1GB SLI Corsair Vengence LP 24GB 1333Mhz 
Hard DriveOSMonitorKeyboard
OCZ Vertex 3 120GB Windows 7 Enterprise SyncMaster P2770 Microsoft Ergonomical 4000 
PowerCaseMouseMouse Pad
CoolerMaster M850 850w Fractial Design R3 - White Steelseries IKARI Steelseries 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7-970 @ 4GHz ASUS Rampage III Black Edition Gigabyte GTX 460 1GB SLI Corsair Vengence LP 24GB 1333Mhz 
Hard DriveOSMonitorKeyboard
OCZ Vertex 3 120GB Windows 7 Enterprise SyncMaster P2770 Microsoft Ergonomical 4000 
PowerCaseMouseMouse Pad
CoolerMaster M850 850w Fractial Design R3 - White Steelseries IKARI Steelseries 
  hide details  
Reply
post #4 of 5
I would bump the vcore up one or two notch and then run prime95 with small fft for 8-12hours.

if youre still not stable post your BIOS settings so we can have a look at them and provide you with more precise recommandation than just an educated guess.

cheers
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sandisk 480MB extreme pro plextor px-256m5 pro Western digital black 1.5tb Western digital black 1.5tb 
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Hard DriveOptical DriveCoolingOS
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Back to basic
(18 items)
 
mini blackened
(12 items)
 
 
CPUMotherboardGraphicsRAM
intel 5820k asus x99 deluxe evga gtx980ti sc+ acx G.skills dd4 F4-2800c16q-16grk 
Hard DriveHard DriveHard DriveHard Drive
sandisk 480MB extreme pro plextor px-256m5 pro Western digital black 1.5tb Western digital black 1.5tb 
Optical DriveOptical DriveCoolingOS
plextor px-880sa Lg bluray burner Noctua DH-15 Windows 10 Pro 
MonitorKeyboardPowerCase
ASUS PG279Q WASD v1.0 custom Cherry brown TKL seasonic x850 Fractal Design Define R5 
MouseAudio
razer imperator 2012 Aune X1S DAC  
CPUMotherboardGraphicsRAM
Intel i5 3570k @ 4.4ghz ASUS P8Z77-I Deluxe mITX eVGA GTX 660TI Superclocked Crucial Ballistix Elite 8GB 2X4GB DDR3-1866 
Hard DriveOptical DriveCoolingOS
Intel X25M 80GB Lite-On DL-4ETS slim blu-ray Antec Kuhler 620 Microsoft Windows 7 Ultimate x64 
MonitorPowerCaseAudio
Panasonic PT-AE1000 Projector and 108" screen Silverstone ST45T SFX PSU Silverstone FT03-mini onboard 
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Reply
post #5 of 5
Thread Starter 
The vcore is already really high, I'll get the BIOS settings, there might be something that I've done terribly wrong.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7-970 @ 4GHz ASUS Rampage III Black Edition Gigabyte GTX 460 1GB SLI Corsair Vengence LP 24GB 1333Mhz 
Hard DriveOSMonitorKeyboard
OCZ Vertex 3 120GB Windows 7 Enterprise SyncMaster P2770 Microsoft Ergonomical 4000 
PowerCaseMouseMouse Pad
CoolerMaster M850 850w Fractial Design R3 - White Steelseries IKARI Steelseries 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7-970 @ 4GHz ASUS Rampage III Black Edition Gigabyte GTX 460 1GB SLI Corsair Vengence LP 24GB 1333Mhz 
Hard DriveOSMonitorKeyboard
OCZ Vertex 3 120GB Windows 7 Enterprise SyncMaster P2770 Microsoft Ergonomical 4000 
PowerCaseMouseMouse Pad
CoolerMaster M850 850w Fractial Design R3 - White Steelseries IKARI Steelseries 
  hide details  
Reply
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