Q6600 too much chip for a DS3R?
Just got a q6600 and was starting to OC it. Some quick trials got me 3.6GHz with I think 1.35V. It was up and running and folding fine, realtemp reported the cores were humming along in the low 40's. I thought I had a little rattle happening, it had a little bit of a hiss sound to it too so I was poking around inside the case and found out the noise was coming from the CPU area.
Using the Mk.1 Index Finger Temp Probe I just about lost my finger print on the SMPS parts - the little black cubes - inductors I assume. Seriously I really did burn my self a little. Yes I'd like a cookie and a glass of milk! I quickly shut the comp down and backed off on the OC to 3GHZ at stock volts and all is better now. Those little black cubes are still damn hot but I'm not getting any red squares on the end of my fingers. Now I know the discrete components can handle a good amount of heat, most MOSFETs are rated for 200°C IIRC, but the noise... that's bad.
So... uhhh... this can't be normal can it? Do I need to get a mobo with a beefier SMPS?
:( That is unwelcome news I haven't ventured beyond 3.2 with the same board/cpu. I hope it's not a thermal problem in the end.
EDIT: unless you're talking about the ep35 not 45 ds3r?
What case do you have? And what cpu HSF are you using?
What could be happening is your providing enough airflow to this air which is causing these chips to get hot.
So you have a few choices:
a) Get heatsinks for them
b) Get better air flow AND heatsinks :P
But no that chip should be fine for that board.
As enaberif said, the chip / board combo is just fine. The hissing sound you hear comes from the inductors, and due in part by the high temp and low air flow. I had the same problem on all my Gigabyte and Asus boards the second I started putting some load - even more so with a Quad sitting in the socket.
Solution? Again, heatsinks and good airflow. But even so the hissing will not completly be gone under load.
Now, on a side note: 3.6Ghz with only 1.35V vCore? Damn, that's low! I remember my Q6600s needing over 1.5V to reach 3.6...
If that problem was just a thermal issue then I could come up with something, though air flow is pretty minimal in that area. There aren't any fans close by and the NB and CPU are on water so obviously no air flow from them either. My rig is VERY silent, I've had a few panic moments wondering why it wasn't running when I've been standing right beside it, just to find out it is on so that noise from the SMPS is unacceptable, easily louder than the rest of the system. So is a new mobo the only other alternative? Seems like a waste.
That said, this comb is fine regardless of the noise? I'd like to push this chip a bit and see what it can do but I'd really hate for the caps to become little projectiles or the mobo going up in smoke.
@joeperson, it's this mobo.
FWIW I stuck on some enzotechs on the inductors and added some airflow. As you said the noise is diminished but not gone completely. Though I'm now more comfortable running at 3.6GHz... and it been running/folding for days with only 1.375V. I think I'm at a brick wall OC wise though. I did a quick few trials and I think anything past this and it needs gobs more voltage to stay stable. I'll have to play some more though. I have access to a P5Q-pro that I might swap out for... just not sure if the PITA of a mobo swap is worth it in this case.
Overclocked 65nm quads wreak havoc of a board's vreg and it is going to run alot hotter than a 45nm duo. I think you will be fine with airflow and sincs and the P5Q will likely yield the same heat.
Yea, when I dont have a fan on my Vreg's the temps just continue to climb and climb...
I switched over to the P5Q pro last night and the noise is gone. Well, it still makes a similar noise but I have to stick my head in the case to hear it. As a result I have the q6600 @ 3.83GHz right now with 1.45V IIRC.... goin for 4.0GHz.
Holy smokes, that's very good. Not too many Q6600s made it that far.
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