New R9 390 not running as good as it should be

Bladexey · Feb 28, 2016

I recently upgraded my PCs gpu and psu to an r90 390 and an 850w psu. I booted up the computer and everything seemed fine, but I was getting very similar frames as I did on my old r7 260. Battlefield 4 at high settings at 1080p runs at 40 fps and csgo at medium runs at 120. On the heaven benchmark I got a score of 1333, min fps 8, max fps 108, and average 53. I've tried updating the drivers. btw, I don't know a whole lot about this kind of stuff so a lot of this is new to me.

Specs:
Windows 10
CPU: AMD A10-7850K Radeon R7
GPU: Radeon R9 390
PSU: 850w
RAM: 8gb

jerdle · Feb 28, 2016

download MSI afterburner and check GPU usage % during gaming. Also have task manager open and check your cpu usage. Do you the APU hitting 100%? Is the 390 reporting any usage?

nitrium · Feb 28, 2016

I'm not sure if there's something up with the current crop of R9 390s or a driver/firmware issue, but I have seen the issue of poorly performing R9 390's crop up a lot lately. It seems to be due to the GPU downclocking which IMO is caused by AMD's PowerTune (https://en.wikipedia.org/wiki/AMD_PowerTune). If that is indeed the case (you can check it with GPU-Z available here: https://www.techpowerup.com/gpuz/ - click the sensors tab), try this:

1. Right click anywhere on your desktop and select AMD Radeon Settings.
2. Click the "Gaming" tab
3. Click "Global Settings" tab
4. Click "Global Overdrive" tab
5. Adjust "Power Limit" slider to +20% (don't adjust "GPU Clock" slider).

Run the game again, and see if that helps maintain ~1000 MHz during your benchmark.

davmazin · Feb 28, 2016

are you also sure you dont have a cpu bottleneck ?

JohnBonhamsGhost · Feb 28, 2016

make sure you have display cable going to dedicated GPU and not to the motherboard's I/O plate.
make sure you have Windows power settings set to at least High Performance.

siviprime · Feb 28, 2016

1. Update to latest Crimson drivers
2. Put Windows to High Performance mode
3. Check your CPU and GPU usage; if the CPU usage is high and the GPU usage is low, your APU is bottlenecking.

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New R9 390 not running as good as it should be

Bladexey

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jerdle

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