I have found another post from 8 days ago, MSI RX 480 Gaming and he mentions spiking above 1.3V.
Bios flash didn't fix it but made it better, now with stable clocks using 580 bios I do not spike.
Spikes happen 2 ways.
1 - > GPU goes into p-state 6-7 while being loaded really light like vp9 load, it uses normal voltage and one of a sudden spikes to 1.35+
2 - > GPU under load throttles, switches p-states and spikes at some point about 1.3V 1.27v, this I beleive actually degraded my card because it spikes a lot and it took me a while to notice.
and card doesn't OC near as good as it used to.
so basically the connection between VRM and GPU is just bad somehow.
With 580 bios, now I disabled VP9 on youtube, I didn't spike once since then.
But think, what if I want to sell this GPU? I cannot lie to the buyer.
but If I RMA this, they'll say it works OK.
what if I change VRM frequency? make it faster? AFAIK it means no harm to the actual VRM but might make it run a bit hotter.
I am really not sure how to do it and if it will have any side effects.
also can it be my PSU? When I check both 12V reading from GPU and Mobo they are between 0.1% of them and GPU says 12.094V.
I am thinking if somehow PSU is cutting off " I " under light load, so " V " increases to achive rquired Watts?
I am going crazy with my little electrics knowledge
I really need to stab the GPU with a good DMM but I don't know where to stab and also really don't wanna open up my case, it is a mess.
Originally Posted by rastaeyes
I have the MSI Gaming X RX480 8GB so I decided to try it out and the results for me were normal.
See my benchmark here: https://imgur.com/a/RNrUQ
I would say your card is faulty, have you tried it with a different BIOS to see if it behaves the same way?
Can you share your bios with me? Also can you make sure it is IR controller. You can do it with VRMTool info is in the 1st post.
@hellm as far as I know, it is fine to flash his bios right? Wanna give bios' one more try with a known good bios.
Testing with VP9 again.
I think it is video dependent. It didn't spike with 1080p@30FPS. It spiked 5 minutes into 720P@60FPS to 1.365V, yes 1.365v
also while video is playing, switching tabs back and forth helps it spike. (it goes to 0.75V and the moment I switch tabs ofc wants power and overshoots)
not always, but it happen.
I changed clocks and voltages a little bit. Reduced state-6 to 1266mhz and 1000mv, state-7 is 1350 @ 1150mv.
it doesnt spike on all videos I am still watching right now 1080p@50FPS, for now I can only say it spikes when video is 60FPS and high motion. I'll keep testing.
I am also recording hwinfo screen with OBS, so I'll stop and see everything when it spikes.
It didn't spike for 30 minutes watching 1080p and 1080p@50FPS, into a minute of 1080p60FPS it spiked to 1.325v. So it is also video dependent.Edited by MixedC - 11/24/17 at 2:28pm