4850 VRM Question

Spaxspore

Gawd
Joined
Nov 12, 2007
Messages
561
powercolor_hd4850_21.jpg


After looking at this card, where are the VRMs at is it the grey chips (which is what i was thinking) or is it the small black ones. I got heatsinks coming so i can put my 2xs1 on my xfired setup but i want to make sure i put them on the correct chips. I looked on thermal rights website but they have only pics for the 3850,3870 and the 4850 layout looks a tad bit different. Any help would greatly be a appreciated.

Thanks

Spax.
 

Vengance_01

Supreme [H]ardness
Joined
Dec 23, 2001
Messages
6,775
You should* have a sink on each. Both the black and gray are covered by the stock cooler. What I did was use 1 for each or 6 in total. Under load they get super hot. Make sure you have some ram sinks. ;)
 

aldamon

Supreme [H]ardness
Joined
May 24, 2000
Messages
6,611
I wouldn't worry about them. The stock heat sink looks like it insulates them. Like every other card I've owned for the last few years, all there is is crappy TIM and the same piece of metal touching the core/RAM "cooling" the VRMs. They obviously run fine hot.
 

lol_wut

Limp Gawd
Joined
Jul 7, 2008
Messages
175
With the stock heatsink, the heatsink metal is actually hotter than the components it's cooling. It actually heats them up instead of cooling them down.

However, I would still put heatsinks over the PWM area just to be safe. It never hurts to have extra cooling. You can make your own heatsinks if you have old parts lying around.
 

Spaxspore

Gawd
Joined
Nov 12, 2007
Messages
561

Thanks for the pic that helps alot :)


With the stock heatsink, the heatsink metal is actually hotter than the components it's cooling. It actually heats them up instead of cooling them down.

However, I would still put heatsinks over the PWM area just to be safe. It never hurts to have extra cooling. You can make your own heatsinks if you have old parts lying around.

Yea thats what i was thinking, but i got some on the way, better to have something on them then nothing.
 
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