Quote from: mumus on March 25, 2015, 02:10:12 PM

Quote from: BitSlapper on March 25, 2015, 01:46:59 PM

Hey cwrmyy888 .

So I updated my drivers and ran a test on my dev machine again.

It seems with the latest drivers I get about 42 MH/s . I think I was using 13.12 when I was getting close to 50 MH/s .

So 44 MH/s on the latest drivers is actually quite good.

I wrote about the GPU miner performance difference between drivers here: https://bitcointalk.org/index.php?topic=657601.msg9991629#msg9991629
And also this article talks about it in general: http://cryptomining-blog.com/4519-getting-the-optimum-mining-performance-on-amd-gpus/

Hey mumus thank you for the link in the forum and your research into the issue at the time.

Hopefully AMD's OpenCL libraries will become more stable in the future.

There's actually another issue I found while working on the NVIDIA integration that might help to improve performance for some older AMD cards.

It will be hard to test since I have only one old(ish) card, an HD 6950, and it's unreliable...

So I guess we'll see when I release the next version.

After the NVIDIA integration is finished I was thinking of trying to pick up an old 4870x2 for testing older cards.

Most likely only a small portion of miners are actually using old cards but it would be cool to test with.