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Dvi v hdmi ?

post #1 of 8
Thread Starter 
Hello
Just something that I had noticed whilst using a DVI lead versus a HDMI

LOWER GPU temps on the GPU using DVI and as soon as I plugged the HDMI in the temps started to rise,

Asus 480 GTX
DVI IDLE = between 35 and 40 Degrees,
HDMI IDLE = between 58 and 70 degrees,

Just wondering now how many other people have noticed this significant gain in GPU temp using HDMI rather than DVI ?

Does not matter what model card you have Nvidia or ATI or series just as long as you can try the DVI and HDMI 4**, 5**, 5***, 6*** whatever card you have see if you arrive at the same outcome as me HOT,

OH please no flaming or fanboyism
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post #2 of 8
Well this is a long shot, As it was a problem with the 470 series but are you using Dual screen at all ? As I know with the 470 cards ( I had one ) that with Dual screens the temp did increase. Other than that I am not sure.
post #3 of 8
Wow! No way I ever saw that kind of difference. In fact I never noticed any kind of temp difference between the 2. Or any kind of quality difference. I routinely bounce between the 2 connections as well.
post #4 of 8
Quote:
Originally Posted by macca_dj View Post
Hello
Just something that I had noticed whilst using a DVI lead versus a HDMI

LOWER GPU temps on the GPU using DVI and as soon as I plugged the HDMI in the temps started to rise,

Asus 480 GTX
DVI IDLE = between 35 and 40 Degrees,
HDMI IDLE = between 58 and 70 degrees,

Just wondering now how many other people have noticed this significant gain in GPU temp using HDMI rather than DVI ?

Does not matter what model card you have Nvidia or ATI or series just as long as you can try the DVI and HDMI 4**, 5**, 5***, 6*** whatever card you have see if you arrive at the same outcome as me HOT,

OH please no flaming or fanboyism
Perhaps your GTX480 does not downclock at all (remains in 3D clock vs idle clock) when it is connected with an HDMI output, leading to higher idle temperature?
(I think a 480 should downclock to 51 (core), 101 (shaders) and 135(memory))

Check it with Afterburner.

Which driver version are you using?
Edited by windfire - 4/17/11 at 6:32am
post #5 of 8
RTFM.

Different clocks via 1 vs 2 devices connected.
post #6 of 8
40 degrees with 1 monitor connected via dvi

40 degrees with 3 monitors connected via dvi, hdmi and MDP.
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post #7 of 8
Quote:
Originally Posted by fluxlite View Post
40 degrees with 1 monitor connected via dvi

40 degrees with 3 monitors connected via dvi, hdmi and MDP.
You have an ATI card though
post #8 of 8
I've never heard of HDMI running higher temps before over DVI. It must be some other issue. Might lie in the resolution config somewhere.

I have a GTX 580 and when I was running HDMI on a 21" Acer H2112H 60hz monitor 1920x1080p I had temps of 41C idle avg.

I upgraded to a 23" Alienware AW2310 3D 1920x1080p 120Hz monitor and it requires I use DVI to achieve 3D and I didn't see a temp decrease. It's idle still at 41C avg.
     
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