Help me cool my VRMs

eddyc

eddyc

eddyc

Associate
Joined
13 Nov 2009
Posts
1,107
So my motherboard VRM is overheating and throttling my cpu. No good.

Has anyone got any advice on cooling it all down?

I was looking at the akasa system exhaust blower and the antex spotcool system cooler. Does anyone know which would be better?

With the exhaust blower I imagine I could try to construct a small shroud which could focus it onto the VRM heat sink. With the spotcool I guess it would not matter so much, I would just point the fan at the heat sink.

I have messed around this evening with a spare 92mm fan. I managed to wedge it between the I/O ports and my baram (it fitted almost perfectly) and had it blowing away from the VRM. It improved stuff a lot but the mobo was still throttling when the cpu got up to 56*C or so.

Anyone got any ideas?
 
eddyc said:
So my motherboard VRM is overheating and throttling my cpu. No good.

Has anyone got any advice on cooling it all down?

I was looking at the akasa system exhaust blower and the antex spotcool system cooler. Does anyone know which would be better?

With the exhaust blower I imagine I could try to construct a small shroud which could focus it onto the VRM heat sink. With the spotcool I guess it would not matter so much, I would just point the fan at the heat sink.

I have messed around this evening with a spare 92mm fan. I managed to wedge it between the I/O ports and my baram (it fitted almost perfectly) and had it blowing away from the VRM. It improved stuff a lot but the mobo was still throttling when the cpu got up to 56*C or so.

Anyone got any ideas?
Click to expand...

Hey mate,

56 degrees is too hot for the cpu, not your VRM. AMD's limit is very low for their line of cpu's. Why are you trying to cool vrms? Its the cpu or perhaps the motherboard that throttles down due to excess heat.

My friend 1090T idles at around 18 degrees and under full load at 3.5Ghz gets to thirty something degrees. What are you using to cool the cpu? I'd suggest changing it!
 
Last edited:
tommytinkle said:
Hey mate,

56 degrees is too hot for the cpu, not your VRM. AMD's limit is very low for their line of cpu's. Why are you trying to cool vrms? Its the cpu or perhaps the motherboard that throttles down due to excess heat.

My friend 1090T idles at around 18 degrees and under full load at 3.5Ghz gets to thirty something degrees. What are you using to cool the cpu? I'd suggest changing it!
Click to expand...

Thanks for the reply. I am pretty sure 62 is the thermal limit for the 1090T so it should not be throttling at 56. Also before I started cooling the VRMs it was throttling at 49/50. I believe it is a known issue with my motherboard that this happens when the VRMs overheat.

Your friends temps seem great. What cooling is he using? Are you sure your friend is looking at the right temp? The core temp is a software generated and inaccurate figure. It seems to generally show about 10*C lower than the real cpu temp (shown in hwmonitor / speedfan).

I am using a thermolab baram with an apache on it.
 
His friend will be looking at the Core Temps rather than the actual CPU Temp, hence it is reading so low.


For cooling your VRM's a Spot Cooler would be better, just angle it right over the Heat Sink and job done.
 
Cheers HeX. Ordered - out of stock at OCUK so had to go somewhere else. Hopefully that will do the trick. My hopes for 4GHz are rekindled!
 
You need to use HWmonitor or Everest to get the proper temps on an AMD.

Usually listed as TMPIN0 or TMPIN1 (depends on your mobo), one of those will be your actual CPU Temperature.

The listed 'Core Temps' are just made up software generated guesstimates, which are usually wildly out.
 
You must log in or register to reply here.
Back
Top Bottom