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Trying to Hold 4ghz+ with a Q9550 on a DFI DK P45 TR2S - Page 2

post #11 of 14
Thread Starter 
Actually, If I can run 8x 475 at current settings and not get a crash, why would I try 6x 470?
post #12 of 14
Thread Starter 
And messing with the GTL by going down to 73.. wouldnt even post. I will have to find a sweet spot on those.. It was also stated to me by another member with similar setup, that he had to remove 4gs of ram. As he had problems trying with 8gs. Id rather keep the 8g, but I guess that would be an easy test.
Edited by Irishinmeveins - 2/21/11 at 8:02am
post #13 of 14
Quote:
Originally Posted by Irishinmeveins View Post
Actually, If I can run 8x 475 at current settings and not get a crash, why would I try 6x 470?
If you can run 8x 470MHz without a crash then all you need for 8.5x 470MHz FSB is more Vcore becouse of higher CPU freq (4GHz vs 3.76GHz)..

Try lower GTL's like 0.63x and below..

CPU GTL's are actually a multiplier for GTL voltage..

A default Intel 45nm CPU GTL voltage is being calculated as CPU GTL 0.67X 1.10V vFSB = 0.737V..

Now most of OC'd Q9550 like that voltage in the range of 0.790V - 0.830V..

Now if you're running 1.34V vFSB you should try GTL's in between 0.59x and 0.63x as your GTL voltage would be in that 0.790V - 0.830V range..

CPU GTL voltage is important for Quads when they are being OC'd over 450MHz FSB mark..

CHEERS..
     
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E6750 G0 @ 3.3GHz (1.25V LOAD) Asus P5KPL-VM G31 GeForce 8500GT @ 700/1600/445 Apacer 2x1GB 800MHz 
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CPUMotherboardGraphicsRAM
E6750 G0 @ 3.3GHz (1.25V LOAD) Asus P5KPL-VM G31 GeForce 8500GT @ 700/1600/445 Apacer 2x1GB 800MHz 
Hard DriveOptical DriveOSMonitor
Hitachi Deskstar 160GB (7200,8MB) LG DVD Win 7 Ultimate 64bit build 7601 LG 19" 
KeyboardPowerCaseMouse
5$ keyboard Cheap stuff Linkworld crappy/modded SmartBox cheap 
Mouse Pad
N/A 
  hide details  
Reply
post #14 of 14
Thread Starter 
I was able to run a complete test on prime95. I ran cpu bench with crysis also. No crashes with below settings. However, I did try OCCT and it ran for about 20 mins, then I got a core 2 error or something like that.

cpu clock> 8.5x
target cpu clock> 4003
cpu clock> 471
Dram> 333/667
PCIE> 101mhz

CPU VID special add> 250omv
DRAM volt special> 2.2v
SB core/cpu pll volt> 1.55v
NB Core volt> 1.457v
CPU VTT volt> 1.44v
VCore drop> Dissabled
Clockgen Volt control> 3.45V
CPU GTL 0/2 REF Volt> 0.67x
CPU GTL 1/3 REF Volt> 0.67x
North Bridge GTL REF Volt> 63x
FSB Vref> 23


My actual bios volt readings:
CPU Core> 1.32v
DRAM> 2.22v
NB Core> 1.44v
CPU VTT> 1.40v

CPU-Z reads my Core Voltage as 1.328v

I dont seem to have luck if I change the GTL settings.
Edited by Irishinmeveins - 2/21/11 at 10:05am
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