I just spoke with my friend who made that roundup an we both agree: for your CPU and your mild OC Megahelems with Noctua fan wold not gain a significant difference in front on Noctua U12P. About choosing a fan, you have plenty of articles here on SPCR and on XBit too. IMHO in my experience with fans...

Oh well, after two pages of fancy theories and graphs I find out that it's about Nirvana own fan extrapolation and not about reference fan extrapolation. Good. In fact it's not good, it's worse because I can understand that replacing the stock fan it's a NASA engineer job and it's against SPCR polic...

For a user, the comparison cited by Burebista is actually more useful because it is comparing different coolers with the same or similar fans Same fan, same RPM, same CPU, same frequency, same Vcore, same ambient, same TIM and 23 different coolers. and it becomes clear that Nirvana, the cooler, is ...

I give you a link at a test made by one of my friends on his Q6600 G0. It's in Romanian and if Google translate fails you at least you have some pictures and graphs. Also I have temperature for i5 and Noctua NH-U12P. A short summary, if you want a high performance heatsink choose between Prolimatech...

As for the other arguments that burebista and dev (same person?) [...] Thank you. Beside I'm moderator/user on a couple of our forums you can find me here on SPCR but on ocforums, hardwarecanucks, jonnyguru, guru3d, techpowerup and XS too. The fan in this heatsink isn't MEANT to be switched out. OK...

I usually don't talk with half-learned guys but for you I'll made an exception because you enlighten my day. Heat grows with POWER OUTPUT. The more power the cpu consumes, the more heat is generated. Amount of heat has nothing to do with frequency..it could be running at 100hZ and still put out 95W ...

Perhaps you're right that we should use a hotter CPU, but the exact type of CPU doesn't matter, only that it runs hotter and uses a current socket. I hope you're joking, right? It's not only about TDP but IHS size and cores number and HT for Nehalem for example. Put a HDT heatsink with 4-5 heatpipe...

What are you blathering on about?? The meaning of your post is utterly opaque. I want to say just one thing Mike: if you want to do something do it right or don't do it. There's no way to replace the stock fan with the reference fan, so if you want a noise/airflow/cooling relevant comparison, extra...

I'm stumped. I ignore that we are almost in 2010 and test platform is with a Presler but I can't ignore this Since the Nirvana fan is not easily replaceable, it cannot be easily compared to other 120mm fan heatsinks where our reference quiet fan was used. However, we made a calculated extrapolation ...

Take a look here (if Google translate fails you then you have some pictures :D). That guy is a good friend of mine and I trust his tests entirely. http://i37.tinypic.com/2z6at55.jpg Now pick one after your needs: you want best fanless performance and very good fanned performance then choose Z600 but...

If you want a fanless heatsink Z600 is the best followed by Scythe Ninja2 + Stabilizer.
Prolimatech is a beast which shine in high airflow and TDP.

Task Scheduler?



Works like a charm here.

HX650 it's basically the same as HX620.

do you have another modular PSU to recommend with 4 PCI-E connections

Of course. The new 650W king: Seasonic X-650.

Seasonic X-650. 80+ Gold and fanless until ~270W DC load.
Otherwise I'm very happy with my Signature 650.

Spike_8585 wrote:So, should I disable the underclocking at idle? Or is there not much of a benefit from changing that?

Nope. You should disable EIST/C1E only if your overclocking is not stable. Otherwise you should leave them enabled because you can reduce heat/power consumption when your CPU is in idle.

Yep, your CPU is stuck at 40°C. It's common for 45nm CPU, don't worry. Anyway idle temps are meaningless so if it works in load is perfect, no need to return. :) OC as high as you can but try to keep distance to TJMax>20 (or core temperatures below 80°C). Your frequency is 1.6GHz in idle because y...

Spike_8585 wrote: Do I have to host it somewhere, then link it?

Yep, tinypic, photobucket for example.
From your explanations I understand that your cores are stuck at 40°C. Nothing to worry if they move up in load.

Take RealTemp, close all all unnecessary background programs and do a CPU Cool Down Test. Post a screenshot at the end of test.

I can tell you what my friend (who works at our Corsair/Antec/Sirtec/BFG/Scythe importer) told me: he never hear a more silent PSU than CP-850 from all the PSU's that they have imported. And not only in idle but in full-load too.

Here . It's in Romanian but if Google Translate fails you at least you have a lot of pictures and graphs to look at. :) The guy who made it is a friend of mine which made this as a hobby. Most of them are bought from his pocket, some are borrowed from friends and others are samples send by manufact...

I have one in P182 so I guess you'll be fine.

SebRad wrote:Does it whine under Folding@home do you know by any chance?

Sorry man, I quit F@H for some time.

EVGA 260 GTX SC and Signature 650 user here. PSU is dead silent and my GTX coil whine ONLY in ATI Tool (you know, that hairy spinning cube ) and I hear it ONLY with my case open (P182) and my ear close to GPU.
In games, OCCT, FurMark, 3dmark I don't hear coil whine neither from my GPU or PSU.

DeusExa wrote:..what should I look at?

Always look at your cores temperatures. Those numbers dictates your CPU thermal behavior (throttle/thermal shutdown).

I have no idea whether this problem was fixed and/or carries over to Nehalem. The problem was about TJMax value. Intel was/is very cloudy when it comes to say the truth. :D But for Nehalem TJMax value is written in MSR so no more guess. So I'd trust RealTemp more than any other program because deve...

SpeedFan starts only when you're logged in. I understand that your rig cannot POST so it looks like a hardware problem to me rather a software one.

Quietstick wrote: Launched Asus True Vector monitor. Screen froze. Soft power off.
Now PC clicks on but does not go any further (no POST).

What is ASUS True Vector monitor? Only True Monitor that I'm aware is from Zone Alarm.

TBH SpeedFan has nothing to do with your no POST nightmare.

Man something is awful wrong! Stop testing and look at mounting.
Two of your cores were in thermal throttle and remaining two were very close to throttle.

Yes man, I've had the impression that setting 0 in SpeedFan equals 0 with MB but it seems that MB ignores CPU fan speed <21% in SpeedFan. Sorry for misleading. :( For beta I must put on Manual all entries for PWM mode (see below). http://i26.tinypic.com/2gvovpl.jpg OK, to sum up for my P5Q-E and lat...

Klusu wrote:Setting 0% with Speedfan does not mean the MB has set 0%.

Yes, you're right. Setting 0 in SpeedFan is like setting 21% in QFan. MB doesn't all to turn off CPU fan.
System fans are fine, I can turn them off but not for CPU fan.