core 18 - oh boy. openMM/opencl compilation went south for AMD. We don't know where exactly, but some insights of some beta testers devs I think know the answer to get AMD on track on this core. As it is right now, AMD is losing 2x-3x performance compared to core 17 on AMD, and compared to nvidia core 17/18, well there is no contest. Here is comparison: 7970 radeon used to kick any cpu around with core 17. But with core 18 7970 is getting similar TDP than my haswell E i7 [email protected]. 7970 is getting 3x less PPD than it used to get on core 17. So on this core nvidia hands down.
core 21 used to similar to core 18, until we figured out somewhat the issue causing performance degradation on AMD cards. So with latest core compile we are seeing AMD back in the fight, BUT without active AMD involvement to optimise for the fah, we are still behind nvidia. 466k PPD on fury x is very decent (like around 1.5x decent than 290x), BUT 980ti and titan x are getting above 500K, closer to 600k
![Wink ;)](./images/smilies/icon_wink.gif)
As said before we moved some stones around down in AMD camp, and have some responses from certain people, so... we will see
![Razz :P](./images/smilies/icon_razz.gif)
For the record: fury x on core 18 WU is 156K- 180K ppd. I do not have HFM, so I cannot catch the benchmark data to share with you guys. BUt whenever I catch new WU I post the results. Since I finished all the fury torture sessions yesterday, this week will be folding ONLY. So hopefully will get better spread on performance.
Also keep in mind that currently in quite a few opencl benchmarks fury x is underutilised. So I expect AMD to optimise a bit more and we should see some better opencl numbers later on this summer. Cards are very inconsistent to be polite to AMD, but there are some rumours they are preparing Omega like drivers later this month/summer.