Q9550 + DDR2 XMS2 Dominator PC2-8500C5 overclock issue

Ali195

Ali195

Ali195

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- Q9550 @ 3.4 (8.5) x 410
- 4GB DDR2 XMS2 Dominator PC2-8500C5 (2x2) @ 1086 2.7v (with FAN cooler attached)

With it set to 8.5 x400 its rock solid with running prime95, the CPU temp never goes over 63*c on all four cores. 20 minutes benchmark.


Soon as i go over the 400fsb either windows doesnt load or it will freeze within seconds.

Inceared DRAM voltage and loaded into windows but froze again but looking on the forums iv already got it high (been seeing numbers like 2.3v).

Havent touched the RAM timings yet but wanted a bit of advise on next step.

Shall i increase the voltage some more, reduce the timings??
 
2.7 volts on the dominator>? :eek: shouldnt it be around 2.1

also what vcore are you running through the chip and what vid is it

in addition to johnny laris' questions
 
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i know - i had to re-read that a few times

OP - i would SERIOUSLY sort that out asap

my dominator is running at 2.1 and it doesnt need the gimmicky fan

but 2.7 will damage your expensive ram very quickly
 
tbh i wouldnt personally push mine further than what jonnylaris has just said

mines just below his setting and i havent used the fan ever
 
Now mine is actually running at 970mhz @ 2.0v (cpu at 4122mhz) because I dont have enough mem divider options on my board. Next step up is somthing like 1180mhz.
 
yeah - i noticed on my p5qe that there arent many options for memory


edit* just realised that we have totally hijacked this guys thread

sorry :p
 
- DFI X-48 T2R

Vcore 1.28
DRAM 2.41 (im sooo sorry!)
NB Core 1.31
CPU VTT 1.12

DRAM 400/1066
FSB 1600
8.5 * 400

DRAM 533Mhz @ 3:4, 5,5,5,15,2T
 
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that all looks to make sense bar the ram voltage

try ram at 5-5-5-18 with 2.1V

just get it as close to stock as you can and slacken the timings off

then fry for the fsb you couldnt hit

eliminate ram from the equation
 
Ali195 try the following:

fsb: 450

vcore: 1.35
PLL: 1.54
VTT (fsb termination): 1.36
NB: 1.36
SB: Auto
dram freq: 900mhz
mem timings: 5-5-5-15
vdimm: 2.1

Loadline calibration: Enabled (not Auto!)

That will give you a solid 3.8ghz overclock.

Prime it for 6 hours+ and if the temps stay below 72c~ you are good to go.

Make sure you read from real temp or adjust your coretemp settings to tjmax 100c.
 
Ok well set RAM to 800Mhz so its now 1:1 with CPU running at 3.4. Reduced RAM voltage to 2.2v and increased CPU to 1.4v

Anyway i was using "Core Temp" which reads 45,43,48,44.
But Real Temp reads 40,38,46,42. Ran the Real Temp sensor diag tool which came out with 9,9,8,9.

hmmm i shall continue to push CPU untill i get something stable/closs to my man Jonnylaris
 
Ali195 said:
Ok well set RAM to 800Mhz so its now 1:1 with CPU running at 3.4. Reduced RAM voltage to 2.2v and increased CPU to 1.4v

Anyway i was using "Core Temp" which reads 45,43,48,44.
But Real Temp reads 40,38,46,42. Ran the Real Temp sensor diag tool which came out with 9,9,8,9.

hmmm i shall continue to push CPU untill i get something stable/closs to my man Jonnylaris
Click to expand...

I thought your mem was 1066mhz ?

Anyway 1.4 vcore is too high m8, no way do you need that much for 3.4ghz. Try the settings I told you and you should have no problems hitting 3.8 like I said.

Use core temp as its tjmax is 100c by default. Real temp will tell you 5c less than it actually is due to 95c tjmax unless you change it. If you run your mem at 1:1 you only need 1.8 so 2.2 is still too high aswell.
 
put your ram at 2.1 - not 2.2 - 5,5,5,15,2T

like jonnylaris said - vcore is too high at 1.4 - shouldnt need that much

a point from jonny laris that needed reitorating...
Use core temp as its tjmax is 100c by default
 
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