AMD R9 290X?

[Prelude]

I think those numbers are way off...scrypt mining yield close to 1150kh/s, min 850kh/s with a 290x. The 290 non x shouldn't be much slower, same memory bandwidth slower stock clocks (who runs stock?)

Where do you see 1150 on scrypt? Settings, please? I haven't had time to tweak more since my last update.

[pontiacg5]

I think those numbers are way off...scrypt mining yield close to 1150kh/s, min 850kh/s with a 290x. The 290 non x shouldn't be much slower, same memory bandwidth slower stock clocks (who runs stock?)

Where do you see 1150 on scrypt? Settings, please? I haven't had time to tweak more since my last update.

I don't think he has one, but more or less a guess.

The 7970 gets 750 pretty easy with 2048 cores. If the architecture is similar I'd expect nearly 1100mh/s from the extra 768 cores from the 290x. The extra memory and bandwidth ought to be good for something too, maybe?

[ivanlabrie]

I think those numbers are way off...scrypt mining yield close to 1150kh/s, min 850kh/s with a 290x. The 290 non x shouldn't be much slower, same memory bandwidth slower stock clocks (who runs stock?)

Where do you see 1150 on scrypt? Settings, please? I haven't had time to tweak more since my last update.

Didn't you post at that ocn thread? The guy there posted some screenshots...
Intensity 20 and two gpu threads with very high thread concurrency. Experiment with that and stock clocks, maybe undervolt. (modded p1 bios seems ideal for this)

[Kimowa]

Woohoo, anybody have the hash rate for AM R9 290 Scrypt mining?

[Fassan]

I get 840 / khash with my card . Core clock down -12.5% mem std rest of settings same as the guy at overclockers win 8.1 .
Have tried other clocks but can't get a higher hashrate then this.
Does anybody have suggestions for clocks or settings?

[carly200]

I get 840 / khash with my card ...

that's the 290X? whats your watt at the wall?

[Sythyn]

I get 840 / khash with my card ...

that's the 290X? whats your watt at the wall?

I am also interested to know this info. But I believe its the 290 cause 290x can go up to 1mh/s...

[RandomQ]

I think those numbers are way off...scrypt mining yield close to 1150kh/s, min 850kh/s with a 290x. The 290 non x shouldn't be much slower, same memory bandwidth slower stock clocks (who runs stock?)

Yea those numbers are way off because I think they are using stock clocks...

1400 KH/s on my 7990 could go alot higher but has cooling problems that only water cooling will fix
760  KH/s on 280x

[Fassan]

I get 840 / khash with my card ...

that's the 290X? whats your watt at the wall?

I am also interested to know this info. But I believe its the 290 cause 290x can go up to 1mh/s...

This is a 290x Sapphire Bf4 edition water cooled with latest ATI beta drivers Win 8.1 fully patched.
Sorry don't have a W meter will see if I can borrow one.

I have played a little with the clocks, tc and -g but instantly get decreased hash rate.


I am open for suggestions Maybe Linux or Win 7?
I Haven't tried the 290x in win 7 or linux but my 7950 performed the same in Xubuntu 12.04, win 7 and win 8.1

[pontiacg5]

Why are you downclocking the core so much when watercooled? Is it not stable increasing the memory clock at all?

Have you found the max TC when running two threads yet? That's where I would start. You are using the setx commands right?

[Fassan]

This clock setting seems to be my "golden ratio". I have played BF4 with 5% overclock for about an hour no crashes. (BF4 does intermittently seem to crash for everyone including me).
So the only reason I down clock is that with for instance stock clock I get 740 khash......

Using setx commands.
When trying some standard configs for -g 2 I get shares rejected and hw errors. Will play with it a little tonight.

[pontiacg5]

Weird!

When at g2 what are you using for an intensity? I'd stay at i13 when g2, and 17-20 with g1. That seems to work really well on 78xx and 79xx cards, at least.

For fun I'd set the memory to 1.3-1.6 of stock core clock and see what that does, may just crash. Stock is 1000/1250, right?

[Fassan]

1000/1250 right!

Around 800 khash with 1000/1500 stopped at my "golden ration" 1000/1420 on the way up but only around 700 .

Testing -g 2 now.

[Fassan]

tc maxed out at around 32768 but nothing produced more then around 550 khash.

How long do I need to test each tc?

[winner999]

What about power consumption of new R9 290(X), are there any data for khs/W ratio?

[pontiacg5]

If it starts mining than the TC is good. You'll see an error if it is unable to mine with a certain TC. How did you find that number though? I was under the assumption that it should be a multiple of shader cores.

What does this do?

-setx GPU_MAX_ALLOC_PERCENT 100
-setx GPU_USE_SYNC_OBJECTS 1
cgminer --scrypt -o  -u  -p  -I 13 --shaders 2816 --thread-concurrency 28160 --worksize 256 -g 2 --lookup-gap 2 --gpu-engine 1000 --gpu-memclock 1250

You may try a TC of 30976, too.

[Fassan]

28160 = 550
30976 = 20
But cgwatcher reported 0.
Also got bluescreen 3 times in 5 minutes while running and testing these tc.

[pontiacg5]

Hmm, that's strange. I've never seen a bluescreen from too much TC, usually I just get a memory error before mining even starts.

My 7970's/280x like 4x shaders for a TC, you may try that. They won't do anything at all with any higher TC though, not with two threads. I wonder if the beta drivers for the 290x are different than the 280x ones?

[ivanlabrie]

Try this:

-setx GPU_MAX_ALLOC_PERCENT 100
-setx GPU_USE_SYNC_OBJECTS 1
cgminer --scrypt -o  -u  -p  -I 20 --thread-concurrency 8191 --worksize 256 -g 2 --lookup-gap 0

[SquallLeonhart]

Still waiting for more info about the non x...