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MSI R7950 - VDDC Current spikes / fluctuation only in 1 game.

post #1 of 2
Thread Starter 
While playing different games, and normal use, and even a couple "stability" tests I noticed what I think are highly irregular fluctuations in the VDDC Current readings in GPU-Z

So my system:
ASRock Extreme4
Seasonic X650 Gold
i5-3570k @ 4.0ghz - Stock voltage settings
8gb G.Skill 1600 DDR3
MSI Radeon 7950 3GB Twin Frozr3 - 1100/1250 @ 1.050v +20 Power
Crucial M4 SSD
WD Blue HDD

I run a 24" 1920x1200 as primary monitor and a 19" 1280x768 secondary
I play games full screen on the 24" and have other things like GPUz or Team Speak, etc open ont he 2nd monitor.

When playing World of Tanks I noticed some major spikes in the VDDC Current in GPUZ... It would fluctuate from 50-60A then SPIKE to 124-128 for only 1 sensor cycle then back to the 50-60A for a while and then repeat. It does this consistently for the entire time I am playing the game. There are not drops in the voltage or clock speeds at the same time, only the VDDC Current seems to be changing. I have had WOT crash a few times but don't know if its related to this or just poor coding in the game(recent update). GPU Load does not goto 100% in this game even at max settings it fluctuates quite a bit from 50-80%.

This does not happen in normal use in windows browsing the web or playing a flash game, the VDDC Current is steady at around 19-21A during those activities...

I loaded up Far Cry 3 and played for about an hour keeping a close eye on the VDDC Current there... In that game in stayed steady in the 105-110A range the entire time, no spikes. GPU Load does stay near 100% while playing this.

I have run all kinds of stability tests and never had graphic errors or crashes (Furmark, OCCT GPU, Heaven, MSI Kombuster) all worked fine with 0 crashes or graphic artifacts. I have run Prime95 and IBT for hours with no crashes or errors.
I've also played around with my OC settings going up and down from stock speeds and voltages to 1100 Core/1350 Memory upto 1.125 voltage... Never run into stability issues at any settings except with World of Tanks

Do I need to worry about this? Could these spikes cause damage to my GPU? I dont know if the World of Tanks crashes are b/c of this or not, WOT had a big patch recently and its been crashing since then, don't remember having issues before....
post #2 of 2
Thread Starter 
Hmmm I posted this here after not getting any responses on another forum... not responses here either.

Anyone have suggestions at all?

Maybe I'll open a Support Ticket with MSI and see what they say.
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Overclock.net › Forums › Graphics Cards › Graphics Cards - General › MSI R7950 - VDDC Current spikes / fluctuation only in 1 game.