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[BIOS Mod] RX480 -> RX580 Conversions + How-to RX470/RX480 -> RX570/RX580 - Page 39

post #381 of 439
Trying to flash my msi gaming X 8g with msi480-580.1.00012.rom and I get SubsystemIDs mismatch. its is an 8g samsung card with the latest 154 bios.
post #382 of 439
Quote:
Originally Posted by MixedC View Post

Spikes are back, found why so edited the post.

Firefox QUANTUM is doing it. Tested other browsers on youtube for same videos, same quality. Chrome and Basilsk (firefox fork) doesn't. So I either turn of FF HW accel or switch browsers.
But this still doesn't change the fact that this MSI RX480 is broken.

Can you guys test youtube with FF quantum running HWinfo with 100-200ms interval?

FF Quantum on youtube keeps GPU at state 6-7 and switches constantly makes my gpu voltage spike crazy like 1.375v crazy. Been running this way for a while, I really hate this stupid thing.

Edit:
Apperantly FF Quantum adds AMD VP9, so this is why. It is a good thing for a normal GPU in a normal day.
Well not soo much for mine.
You can check, right click on video and go to "stats for nerds" and you'll see it says VP9.
and check if you'll have any spike, just play a video for 5 mins.

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?
post #383 of 439
Thread Starter 
Quote:
Originally Posted by poah View Post

Trying to flash my msi gaming X 8g with msi480-580.1.00012.rom and I get SubsystemIDs mismatch. its is an 8g samsung card with the latest 154 bios.
pls read the flash how-to in OP.
Quote:
Originally Posted by rastaeyes View Post

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?
He did. We all have no answer for that. And he is apperantly not the only one. Maybe @buildzoid could him with some tips where to stab his card with a DMM, no.. i think you would need more than this for spikes, an oscilloscope maybe..
just remember, he is no repairdroid. wink.gif
post #384 of 439
Quote:
Originally Posted by hellm View Post

pls read the flash how-to in OP.
He did. We all have no answer for that. And he is apperantly not the only one. Maybe @buildzoid could him with some tips where to stab his card with a DMM, no.. i think you would need more than this for spikes, an oscilloscope maybe..
just remember, he is no repairdroid. wink.gif
It's not an isolated issue, because I can also easily replicate it with VP9 video. To a lesser extent anyway. I kind of wonder if it's actually happening or if it's just software zonking out and giving wrong readings.

My MSI Gaming X running in another computer, with a different power supply also does it
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post #385 of 439
Quote:
Originally Posted by hellm View Post

pls read the flash how-to in OP.

Did it this time. Tells me I have an rx580 and huge increase in power draw.
Edited by poah - 11/24/17 at 9:30am
post #386 of 439
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.


@hellm
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 biggrin.gif

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.tongue.gif
Quote:
Originally Posted by rastaeyes View Post

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.

Edit:
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.

Update:
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
post #387 of 439
I went back to my standard 480 bios - power consumption for the tiny amount of increased overclock wasn't worth it. appreciate the effort @hellm
post #388 of 439
Thread Starter 
Quote:
Originally Posted by poah View Post

I went back to my standard 480 bios - power consumption for the tiny amount of increased overclock wasn't worth it. appreciate the effort @hellm
http://www.overclock.net/t/1634872/bios-mod-rx480-rx580-conversions-how-to-rx470-rx480-rx570-rx580/320#post_26423449
you see a slight increase when you switch the original BIOS to 580. But that is only for the software-reported power draw.
if u measure at the wall, there will be just a slight increase because of the 25mV more Vcore. I made sure VRM is working as it should be, so at same voltage and clockrate, card will exactly consume as much power as before.

@MixedC
You can also change VRM switching frequency with vrmtool. But be carefull, someone told it would have an effect on other things, and therefore micght not be stable. I had a black screen going from 300kHz to 360kHz on my reference card.
post #389 of 439
Quote:
Originally Posted by hellm View Post

http://www.overclock.net/t/1634872/bios-mod-rx480-rx580-conversions-how-to-rx470-rx480-rx570-rx580/320#post_26423449
you see a slight increase when you switch the original BIOS to 580. But that is only for the software-reported power draw.
if u measure at the wall, there will be just a slight increase because of the 25mV more Vcore. I made sure VRM is working as it should be, so at same voltage and clockrate, card will exactly consume as much power as before.

so the 250odd w power draw I see in afterburner is a crock of **** then lol. I did wonder how an extra 25mV vcore would cause that much increase.
post #390 of 439
MixedC

Here is the readout from VRMTool

https://imgur.com/a/SxX8c

Here is the stock RX480 MSI Gaming X 8GB BIOS from my card pulled using GPU-Z.

https://ufile.io/o8zdm

I couldn't upload to techpowerup or to this forum.
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