Undervolted E6550 with passive cooling?

[pay]

I currently run my E6550 at stock voltage @ 3.15 Ghz and it hits 60C after hours of Orthos. Do you think I could disable the fan on the stock Intel HSF and run it at the stock 2.33Ghz if I lowered the vcore to say something like 1V?

 

[SpeedEng66]

no not on stock

I have a e6550 with a zalman 7000k even undervolted by .1 (running at 1.1v)
it's stable but at load im still pushing 35-38ish with fans on full speed
45-51 @ half

I havent tried any lower (there's no point it's quiet enough)

 

[DSF]

The stock heatsink isn't set up to be run passively, I doubt you'd get satisfactory results. Are you even sure you can run the chip at 1V? My E4500 goes to 3GHz slightly undervolted, but even running it at stock 2.2GHz I couldn't get it stable below 1.2V.

 

[GundamF91]

Originally posted by: DSF
The stock heatsink isn't set up to be run passively, I doubt you'd get satisfactory results. Are you even sure you can run the chip at 1V? My E4500 goes to 3GHz slightly undervolted, but even running it at stock 2.2GHz I couldn't get it stable below 1.2V.

I think that's indicative of the difference between Conroe and Allendale cores. I've seen more than a handful E6xxx doing well at 1.1 to 1.2v. My E4500 is Orthos stable at 2.9Ghz @1.28v, and that's slightly undervolted compared to default 1.30v. E4xxx and E2xxx in general cannot do for less than 1.2v.

Doing at 1v is pretty much pushing it though. There's no reason to undervolt that much since it's does not make the chip last longer.

 

[SpeedEng66]

Originally posted by: GundamF91

Originally posted by: DSF
The stock heatsink isn't set up to be run passively, I doubt you'd get satisfactory results. Are you even sure you can run the chip at 1V? My E4500 goes to 3GHz slightly undervolted, but even running it at stock 2.2GHz I couldn't get it stable below 1.2V.

I think that's indicative of the difference between Conroe and Allendale cores. I've seen more than a handful E6xxx doing well at 1.1 to 1.2v. My E4500 is Orthos stable at 2.9Ghz @1.28v, and that's slightly undervolted compared to default 1.30v. E4xxx and E2xxx in general cannot do for less than 1.2v.

Doing at 1v is pretty much pushing it though. There's no reason to undervolt that much since it's does not make the chip last longer.

well the op is not trying to make the chip last longer just cooler and quieter (im guessing)
using no fan on the stock heatsink

 

[aceO07]

I think I have my Q6600 stock at 1.050v according to Asus mobo. I'll double check when I get home.

 

[themisfit610]

no way dude. no way. Maybe in the low power state!

~MiSfit

 

[GuitarDaddy]

I would never try passive with the stock heatsink, with an Ultra 120 or a Tuniq it would be possible

 

[GundamF91]

Just got a water cooling rig then, no fan on CPU is asking for trouble even if it's only drawing 1.0v. You might as well reduce the multiplier to minimum to reduce heat.

 

[VirtualLarry]

Get a CoolerMaster GeminII if you want to run with passive air cooling.

 

[Comdrpopnfresh]

If you have good flow within the case- but why bother? You'd need an ultra-120, so why not just put a quiet fan on it. I don't quite understand you're aim here...

 

[eelw]

When I swapped out my Q6600 from a B3 to G0, I was amazed at the temperature drop. So I undervolted it like crazy. I got it down to 0.96v stable. Idle temps were in the high 20s and full load was only in the low 50s. And this was with the fan disconnected on my ThermalTake V1.

 

[Idontcare]

Originally posted by: GuitarDaddy
I would never try passive with the stock heatsink, with an Ultra 120 or a Tuniq it would be possible

And with a Tuniq120 and stock fan I honestly can't tell when the fan is running at 1000rpm or when it is turned off by sound alone. That Tuniq fan really is quiet at 1000rpm. It does make a difference on the temps though - passive vs 1000rpm.

 

[Zap]

The heatsink that is best for passive cooling is probably a Scythe Ninja. I have one cooling my E6750 passively at 3.2GHz. The key is to have reasonable case airflow. As a precaution I also got a Thermalright LGA775 bolt-through kit.

I also used a Ninja heatsink to passively cool my overclocked A64 x2 3800+ @2.4GHz for around 2 years.