Same thing here. I'm mining with 2x 290, 2x 290x, and 2x 390. Memory clocks appear to make no discernible difference in hash rate from 1200 to 1650 MHz. Core clock makes a big difference, from 29-30 MH at 1040 MHz to ~34 at 1230 MHz.
Same thing here. I'm mining with 2x 290, 2x 290x, and 2x 390. Memory clocks appear to make no discernible difference in hash rate from 1200 to 1650 MHz. Core clock makes a big difference, from 29-30 MH at 1040 MHz to ~34 at 1230 MHz.I know you have Elpedia but my Hynix cards perform in the same manner. Hynix vs Elpedia and higher memory speeds made a difference for Bitcoin though. I set all my memory speeds to 1275Mhz and get almost the same performance as setting up to 1600. The nice thing is that power consumption drops quite a bit allowing you to spend your electrical budget on GPU speeds.
Also IIRC 290's and likely 390's have "memory ramps". It would be nice to get a list of those ramps so we can adjust speeds accordingly. Need to look closer at Hawaii BIOS editor.
Ok I literally just went to my computer and tested it.
R9 390
1001 mhz = 25.3-28.2 MH/sec (mininum - maximum range)
1165 mhz = 30.7-33.8 MH/sec
1220 mhz = 33.5-36.5 MH/sec
The flag I am using is
"--cl-local-work 256 --cl-global-work 8192"
Changing memory speed from 1500mhz to 1600mhz has no material impact on performance at any of those GPU clocks.
Are you sure your R9 390/390X card's overclock is actually being applied?
edit: it's a shame that more work hasn't been done to optimize for newer cards. Isn't the source for stuff like Ethminer open source? Couldn't we um . . . optimize it ourselves?
Ok now I am up to 32.5 with newer drivers. I am pretty happy with that considering a 1175 clock.
Yeah but do you know any OpenCL expert? Because that's exactly what is needed to optimize for specific uArch.
Nope! There's the rub isn't it? All that open-source code with nothing that can be done with it . . .
Ok now I am up to 32.5 with newer drivers. I am pretty happy with that considering a 1175 clock.
Which driver version?
:thumbsup: R9 390X > 970, more VRAM, better DX12 support, and now it starts to pay for itself. Win-Win.
I took the advice on 16.2.1.
I would feel a lot smarter about it if I would had just bought a 290x in the first place lol.
I learned my lesson, I will try to buy a Polaris 10 card the second it hits Newegg. If your theory is right and the 390x is a better miner than Polaris I might just throw the 390x in some rig in the closet until either Ethereum either becomes worthless or too difficult to mine with GPUs.
In any case, I don't see a lot of point to getting the 390x/290x over the 390/290 since you will get maybe 2-3 MH/s that way, and you'll burn more power to get it.
Polaris should be interesting. I don't see how the 390x will wind up being the better mining card unless software support for it just isn't "there". It should be incredibly efficient compared to Hawaii.
I almost bought that Devil 13 a few weeks ago, hesitated for a bit and then it was gone They had it with a $100 rebate for a reasonable price a NewEgg.ca. I figured without watercooling like the 295X2 reference cards it would get toasty. Still nice to have that my MH's on one card. Trying to find a 295X2 second hand but can't find anything under $700.00 CAD which to me isn't really worth it. For $600 I would bite for a second hand card like this.
Just an update on this. The rebate got approved so I just need to do the 6 week wait, and I sold the mouse that came with it locally for $120. That makes my all in cost on the 390 II CDN$740 with shipping and 5% GST. That's a good bit better per core than the XFX 390s ended up being as they cost $438 (after $20MIR). I still got a Hitman code out of the 390, but the value of that is questionable as they're pretty hard to offload for a reasonable price.
Ethereum price is still in free fall it seems. I think a rebound in the long term is likely, but maybe this will cool off the sharp difficulty increases.
Yeah it's kinda rough watching it fall like this. I think everyone should read the following thread about software development for Ethereum.
https://www.reddit.com/r/ethtrader/comments/4egj2g/some_thoughts_for_the_impatient_from_a_software/
That is kinda dense. The laymens point I got out of that is "it will be a while before Eth is of practical use by regular folks."
I think that is overrated though. I hate to say it, but bitcoin isn't a thing because of legitimate people using it to buy coffee. It is a think because the criminal element of the world is quite a massive market when its all put together, and they needed a currency to facilitate their activities not tied to one government entity. I think when the practicality of bitcoin drops for these people they will move to Eth not because of the profit potential, but just to get business done. They aren't doing it for currency speculation, they are doing it for the benefits to money laundering, drug purchasing, etc.
Mind you regular people using it is needed in the long run. But they aren't the first movers. Here is a great read on the subject:
https://www.equities.com/news/how-bitcoin-made-it-past-the-black-market
That is kinda dense. The laymens point I got out of that is "it will be a while before Eth is of practical use by regular folks."
I think that is overrated Mind you regular people using it is needed in the long run. But they aren't the first movers. Here is a great read on the subject:
https://www.equities.com/news/how-bitcoin-made-it-past-the-black-market
Played with the clocking today and it seems you guys are right. OCing through the AMD drivers produces significantly different results than I was getting from Afterburner. Whoops.
There is a dark market DAO in development which, I hate to say, will probably increase ETH value faster than any of the other DAPPS.
If the message you're trying to get across is a currency needs drugs or something similar to make it valuable sure I get that.
There is a dark market DAO in development which, I hate to say, will probably increase ETH value faster than any of the other DAPPS.