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VGA Help

M

Markie

n00b
Joined
Jan 17, 2005
Messages
13
i've got CPU and VGA cooling a prescot 3.2 on an MSI 865PE motherboard. the graphics card is a Geforce 4 ti4600 (will be replaced soon)

Problem i've got is the CPU runs nice and cool(ish) 36C idle and about 39C full load, however the VGA card runs hot enough to burn my fingers, i can't get an exact temperature as i don't have a sensor, it's hot even before it touches anything 3D or GPU heavy.

I've removed and reinstalled the block several times, there is water passing throught there and the copper part of the block is cool. there is also a good contact as far as i can see.

PLEASE HELP!!
 
Well if GPU waterblock is cold and core is hot then they doo not have good contact.

Grafic card aint just GPU. Next to a GPU Voltage regulator and memory heats up as well. When air cooled, allthough mostly on cheeper cards those parts have no heatsinks, those parts use secondary airflow created by GPU heatsink/fan combo. When Water Cooled there is no airflow hence You have to mount some heatsinks on those parts (ram heatsinks, you can gett them by all normal online shops) and or provide some airflow with extra fan. BGA package of GPU is known to conduct heat into a PCB and uses partialy PCB to cool down. Hence fan from heatsink and fan combo on stock grafic card cools PCB too.

Water Cooling aint just pump, radiator with single fan and waterblocks. Next to it You have to provide airflow to cool chipset on mobo and VRM on mobo and grafic card as well as any other electronic part that heats up. (some older SB Live sound chips where producing heat to)
Wanna have it cool and quiet use 120 mili low noise fans.



MD
 
Perhaps 'cold' was an exaggerated it's warm, but no where near as warm as the GPU, the RAM have heat sinks on them and feel pretty comfortable temperature wise.

Also, to make sure of a good contact, i cleaned all the heat paste off both chip and copper block reapplied to chip and replaced block, removed block again to check for impression of GPU and there was a definite good contact.
 
Well contact has to be tight to. If it just touches everywhere it is not a sign that it is tight to. Water block is allways colder then core but difference shouldn't be to high (waterblock is better cooled then source). If difference is to big then thermal transfer between Waterblock and GPU aint good. It can be couse thermal paste is to thick or too old, or couse waterblock doesn't make tight contact with GPU. It heppens offten couse people are mostly afraid to tighten it down couse they are afraid for their grafic card and their naked GPU. If cotact is good and GPU is still overheating then something is wrong with waterflow. It can be both to high and to low.

Sometimes those GPUs run how what ever You doo. Then to be shure that so hot is normal put on stock heatsink/fan combo and check it then hot hot it gets. If it's same or hoter then You are allright.

Option is also to use other GPU waterblock. One with different waterflow.

Also know problem is single loop where GPU water block comes affter a CPU block hence it gets allready pretty hot water.


MD
 
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