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Usefulness of unstable CPU. - Page 4

post #31 of 34
Thread Starter 
Alright, been testing different voltage/core/multiplier combos and it simply does not last much beyond an hour of MPrime testing. I can still put full load on all 4 cores at 3ghz and it won't crash, freeze or reset. The 965s are still available. I plan on going to Micro Center soon, might just pick up another one while I'm there.
post #32 of 34
Quote:
Originally Posted by replica9000 View Post

According to my CMOS backup, I used to run it at 3.9ghz @ 1.5v and NB was as 1.125v. It used to run pretty warm. I think what I had done was I was attempting to tweak voltages so it would run cooler. I lowered Core VID and instead of choosing +0.060 Vcore I accidentally chose +0.160. Reboot and it didn't post, damage was done. Right now when it fails, I think it's a different core every time.

If that's all you did then you really have nothing to worry about. That's nothing to damage the chip.

I think your problem is elsewhere. Perhaps mobo or PSU.
six|speed
(11 items)
 
five|speed
(14 items)
 
automatic.
(14 items)
 
CPUMotherboardGraphicsRAM
i7 4790k Gryphon Z97 Asus GTX760 OC 16GB Crucial Ballistix 
Hard DriveCoolingOSOS
2x 256GB Crucial MX100 H60 Windows 8.1 Pro OS X Yosemite 
MonitorPowerCase
2x Dell U2414H Seasonic X650 Legacy U3 
CPUMotherboardGraphicsRAM
i5 760 | 4GHz | 1.275v Gigabyte P55A-UD3 MSI NX7600GT  8GB G.Skill ECO 
Hard DriveOptical DriveCoolingOS
1TB Samsung Spinpoint F3 LG 22X DVD±R Corsair H50 OSX 10.7.3 
MonitorPowerCaseMouse
LG 23" Corsair HX620 Antec Nine-Hundred MX 518 
Mouse Pad
Thermaltake 
CPUMotherboardGraphicsRAM
X3 710 CACZC | 3.7GHz DFI LP DK 790GX-M2RS ATI Radeon HD 3300 4GB OCZ XTC @ 800MHz 2.08v 
Hard DriveOptical DriveCoolingOS
Western Digital 6400AAKS LG 22X DVD±R Xigmatek S1283 7 Professional 64-Bit 
MonitorKeyboardPowerCase
20" Acer AL2017 Logitech Media Corsair CX430 Thermaltake Soprano 
Mouse
Logitech G5 
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six|speed
(11 items)
 
five|speed
(14 items)
 
automatic.
(14 items)
 
CPUMotherboardGraphicsRAM
i7 4790k Gryphon Z97 Asus GTX760 OC 16GB Crucial Ballistix 
Hard DriveCoolingOSOS
2x 256GB Crucial MX100 H60 Windows 8.1 Pro OS X Yosemite 
MonitorPowerCase
2x Dell U2414H Seasonic X650 Legacy U3 
CPUMotherboardGraphicsRAM
i5 760 | 4GHz | 1.275v Gigabyte P55A-UD3 MSI NX7600GT  8GB G.Skill ECO 
Hard DriveOptical DriveCoolingOS
1TB Samsung Spinpoint F3 LG 22X DVD±R Corsair H50 OSX 10.7.3 
MonitorPowerCaseMouse
LG 23" Corsair HX620 Antec Nine-Hundred MX 518 
Mouse Pad
Thermaltake 
CPUMotherboardGraphicsRAM
X3 710 CACZC | 3.7GHz DFI LP DK 790GX-M2RS ATI Radeon HD 3300 4GB OCZ XTC @ 800MHz 2.08v 
Hard DriveOptical DriveCoolingOS
Western Digital 6400AAKS LG 22X DVD±R Xigmatek S1283 7 Professional 64-Bit 
MonitorKeyboardPowerCase
20" Acer AL2017 Logitech Media Corsair CX430 Thermaltake Soprano 
Mouse
Logitech G5 
  hide details  
Reply
post #33 of 34
Thread Starter 
I know it's not the PSU, that's in my newer system. It's either the CPU or the board.
post #34 of 34
Thread Starter 
So I decided I was going to use the board/CPU as my new media center. I bought a Fractal Node 605 for the case. My Zalman 9700 is too tall to fit in that case, so I also bought a Zalman 7500. Decided to stress test only to check temps and noise compared to the 9700. So far it's been running over 2 hours no problems. Temps are slightly higher, but have only peaked at 41C.

So maybe switching the CPU cooler is making the difference? If so, I'm thinking because the fan is now blowing down onto the board, it must be keeping something cool that might have been overheating before. In previous test I had a separate fan on the North Bridge because it was getting to hot to touch. The 7500 alone is now keeping both the CPU and the NB cool. Perhaps some of the capacitors were overheating or might have been damaged by the over-volt? They are the only other components around the CPU.
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