Mm a lot of systems from brand manufactures uses QX9650 CPUs at 1.5-1.6V with factory overclock at ~4GHz.
So you only need normal cooling to cool additional heat power. However you have a warranty on CPU...
Mm a lot of systems from brand manufactures uses QX9650 CPUs at 1.5-1.6V with factory overclock at ~4GHz.
So you only need normal cooling to cool additional heat power. However you have a warranty on CPU...
I Googled and found some posts where 1.45V is the max for a Q9450, while others said 1.35V or so was as far as it should go.Originally Posted by Yolanda
I tend to run my PC maybe 14 hours a day on work days, so I'm not SURE that the Freezone Elite will compensate enough for the overvoltage to keep the CPU going for the next few years.
And I don't think the warranty covers setting the voltage too high...
P5W DH Deluxe 1.02G
Q9450 @ various settings like underclocked to 2.32Ghz until a good BIOS comes along...
can we expect a BIOS update to get Speedstep working on 45nm then, or is it technically not possible?
E8400 clocked to 3.6 ghz, 400mhz FSB, Radeon 4850.
I've just installed E7200 and so far it works great. I'd like to ask you what's the maximum safe voltage. About that Q9450 stability issues, you can try 1,45V just for a few minutes of testing. I'm sure that your CPU won't die. Intel doesn't make any troubles when it comes to RMA.
There are two aspects of changing settings on any board; hardware and software. The hardware must first be capable of selecting a finite range of values and then the Bios must be written to allow each of those values to be chosen. I have a rev. 1.03g board, (and an e6700) have tried several bios(s) and have always had the minimum vcore range of 1.225 V. I think someone on this board reported Rev. 1.02g also allowed a < 1.45V selection. The question is - what do versions prior to 1.02g allow. If it's truly a hardware issue, then a new Bios is not the solution.
You have 1.225V with 65nm CPU, but with 45nm CPU only Auto (nominal) and 1.45 and higher can be selected.
Always was a unwritten rule in overclocking, what voltage can be rised upto 10-15% above nominal without troublesSo nominal is 1.225-1.25V and you can set to ~1.4V.
Yolanda, thanks for your answer. At the moment I'm running my CPU at 3,8GHz and 1,36V. I'll try to reach 4GHz tomorrow. P5W DH Deluxe is really an awesome motherboard and I'll keep it until NehalemAlways was a unwritten rule in overclocking, what voltage can be rised upto 10-15% above nominal without troubles
Nice. I take it you have a 1.04 revision of the P5WDH?Yolanda, thanks for your answer. At the moment I'm running my CPU at 3,8GHz and 1,36V. I'll try to reach 4GHz tomorrow. P5W DH Deluxe is really an awesome motherboard and I'll keep it until Nehalem
That's right, my motherboard's revision is 1.04G.
Did you get ur e7200 to run at 4ghz yet? What FSB is needed to get there?Yolanda, thanks for your answer. At the moment I'm running my CPU at 3,8GHz and 1,36V. I'll try to reach 4GHz tomorrow. P5W DH Deluxe is really an awesome motherboard and I'll keep it until Nehalem
Sig is under construction
Yes, I managed to overclock my E7200 to 4GHz. I had to increase FSB speed to 421MHz to reach that frequency. Right now I'm not sure if it's fully stable, but I'll check it soon.
421FSB required to get 4GHz on E7200 and E8500. But only from 423FSB BIOS will print at startup about your nice "4.01GHz"
Could never get much over 400mhz on my board... dunno why
Sig is under construction
I had to increase FSB Termination Voltage to 1,3V and NB Voltage to 1,65V to reach frequencies over 400MHz.
However 45nms need large voltage boost to get to 4GHz and over.
My E8500 works at 4GHz at 1.4V, at 4.2GHz at 1.5V, but 3.85GHz requires only 1.32V.
Try to test by Linpack, Prime heat 4GHz CPU upto 70-75 by RealTemp, but Linpack get upto 85-88...And it's really hot, ASUS Pcprobe reports about 60 degrees at this state.
Last edited by Yolanda; 08-30-2008 at 01:24 AM.
That's right. That's why I'm usually running my CPU at 3,8GHz. I'm running it at 4GHz only for benching.
I'm have watercooling, so CPU temps were never my problem. Mobo just didn't like going over 400mhz
Sig is under construction
You have to increase FSB Termination Voltage and NB Voltage. It helped in my case.
I did that to get to 400mhz... anyways, I don't have that mobo any more, so it doesn't matter much now
Sig is under construction
I just picked up a Q6600. If my bios is already up-to-date what steps do I have to take to upgrade from a e6600 to a q6600 on Vista Home Premium? Do I have to reinstall or can I just replace the processor?
Main Rig:
2500k @4.4
ASUS P8P67 PRO
GSKILL Ripjaws 4gb 7-7-7-21
2TB Black WD
HIS 6850
Samsung 203b
Logitech K800 & MX
You might have to reactivate vista but that's about it. CPU will be automatically recognized by windows, there are no special drivers fo Q6600
Sig is under construction
does anyone with a 45nm proc have EIST still available in the BIOS?
E8400 clocked to 3.6 ghz, 400mhz FSB, Radeon 4850.
Thanks guys. I have my new Q6600 OC'd at 3.10 with 1.325 volts I haven't done any stress testing yet but was wondering what kind of differences would I see between 800mhz memory at 5-5-5-15 ratio 5:4 and 667 mhz memory at 4-4-4-13 ratio 1:1?
Also, the temps look to be pretty good in the low 40s.
Main Rig:
2500k @4.4
ASUS P8P67 PRO
GSKILL Ripjaws 4gb 7-7-7-21
2TB Black WD
HIS 6850
Samsung 203b
Logitech K800 & MX
Guys, I've got some troubles and I really need your help. Despite the fact that my CPU is rock stable at 3,8GHz, memory controller is unstable at that 400MHz. Maybe I should install 40mm fan at stock cooler. I don't think it's caused by too small MCH voltage, because raising it doesn't help. I'm pretty sure that my motherboard is simply overheating.
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