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Stable CPU Overclock but PC locks up during games - Page 3

post #21 of 27
Thread Starter 
Well surprisingly everything is stable.

Games don't crash, OCCT and P95 stable (although LINPACK said CPU too hot after a few minutes of testing, temps reached 70C-probably the VTT)

I even achieved a higher memory score in the windows 7 system tester (7.1 - old/7.2 - new). Even 3dmark 11 scored 120 points higher.

Should I manually set in the FSB of a 20% overclock or should I leave it on AI tuning? Same goes with the ram.
    
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post #22 of 27
Personally, I'd set it manually. By the way, 1.52 VTT is more than I used to get 4.23GHz (not stable but still), that's why I assumed yours was a B3. I think I use 1.3V VTT for 3.6GHz stable, I know you can't treat different chips equally but I doubt you'd need anywhere near 1.52 to be stable at 3. Your temps could be VTT related but they could also be Vcore related, what Vcore is it supplying on auto?
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Ex-Kentsfield rig
(20 items)
 
Q6600 RIG :D
(9 items)
 
 
CPUMotherboardGraphicsRAM
4790k MSI Z97M Gaming 780 Ti SLi Corsair Vengeance pro 2x8GB 
Hard DriveHard DriveCoolingOS
Seagate NAS 240GB m500s RAID 0 MCP 350 w/ res top >> MCP655 >> Heatkiller full... Windows 8.1 
MonitorKeyboardPowerCase
3X QNIX 2560x1440 @ 110Hz G910 EVGA Supernova 1000 G2 Stacker 830 
MouseMouse PadAudioAudio
G402 / Deathadder 2K13 League of legends one, cloth ODAC >> O2 >> HD800 / K702s Samson mediaone 5as 
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Samson GoMic Asus wireless AC Logitech G27 Logitech C920 Webcam 
CPUMotherboardGraphicsRAM
Q6600 Asus P5Q-E 8800GTX Crucial Ballistix Tracers 
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post #23 of 27
Quote:
Originally Posted by 2thAche View Post
That's way too much VCore for 3.0. You should get 3.0 on nearly stock volts and maybe a bump on the NB.

How did you end up setting that VCore?
+1

6600 is a 90nm chip but that's a little too hardcore!
post #24 of 27
Quote:
Originally Posted by kikicoco1334 View Post
+1

6600 is a 90nm chip but that's a little too hardcore!
65nm...
Which makes it worse
Edited by Mike-IRL - 5/5/11 at 5:59am
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Seagate NAS 240GB m500s RAID 0 MCP 350 w/ res top >> MCP655 >> Heatkiller full... Windows 8.1 
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3X QNIX 2560x1440 @ 110Hz G910 EVGA Supernova 1000 G2 Stacker 830 
MouseMouse PadAudioAudio
G402 / Deathadder 2K13 League of legends one, cloth ODAC >> O2 >> HD800 / K702s Samson mediaone 5as 
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Samson GoMic Asus wireless AC Logitech G27 Logitech C920 Webcam 
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Seagate NAS 240GB m500s RAID 0 MCP 350 w/ res top >> MCP655 >> Heatkiller full... Windows 8.1 
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G402 / Deathadder 2K13 League of legends one, cloth ODAC >> O2 >> HD800 / K702s Samson mediaone 5as 
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Samson GoMic Asus wireless AC Logitech G27 Logitech C920 Webcam 
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Q6600 Asus P5Q-E 8800GTX Crucial Ballistix Tracers 
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post #25 of 27
Thread Starter 
My Vcore is stock now with the 20% OC. And my CPU VTT cannot be lowered from 1.55 because it randomly reboots, even at 1.50. Sucks but that's the best I can do to keep it stable.
    
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post #26 of 27
Thread Starter 
Update:

20% OC is definitely stable, no reboots or crashes. I tried sticking the older 1GB x2 sticks back in but it wouldn't pass the Windows loading screen, and reboot. It was definitely the RAM not playing nice with each other.

I tried 1333FSB (25% OC) and it ran 3DMark flawlessly but then randomly reboot while browsing the internet. My CPU VTT is already high enough, should I bump my Vcore a little? It's set to Auto in BIOS, and reads as 1.31v-1.33v in ASUS PC Probe II (this app actually reads everything correctly for those of you aren't familiar with it/I get the same exact reading in OCCT). Only thing that reads it different is CPU-Z. It claims it's at 1.248V
Here's a screenie from the validation:


I noticed that RAM timings and FSB:RAM ratio are a big key in keeping my OC's stable. Keeping them at stock has showed me it's a bad idea. Right now with my 2.887 miniature overclock, my RAM speed is 959MHz and timings at 5-6-6-22-2T. I've gotten my highest scores ever with 3dMark (even when I was OC'd at 3GHz).

Right now I'm going to attempt 3.2GHz (1422FSB) and bump the vcore up a little, maybe 1.35V. I'll try to have a moderate FSB:RAM ratio so it won't overclock my RAM too high. I guess I'll leave the timings on Auto since I really don't know what I'm doing in that department.

Any recommendations before I go on ahead?

P.S. I know you're only supposed to increase the FSB little by little but this board is well known for having it's dead FSB zones.
    
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post #27 of 27
Thread Starter 
Update:
Fsb from 1340 to 1490 wouldn't even POST lol. Regardless of what voltage or ram speed. At 1500fsb (3:2 ratio) it passes the windows loading screen but freezes as soon as Windows is starting. Like when the mouse cursor turns into the blue loading circle icon.. It just freezes. I have my Vcore all the way up to 1.45V. Everything else on auto. Any suggestions? I'm posting from my iPhone and wanna keep giving this a go.. It's at 3.37GHz but won't get into windows. NB? SB? more Vcore than 1.45??
    
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