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R9 280X Low Hash Rate? Is it worth it?

post #1 of 14
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Currently, I'm mining using clevermining, and using my R9 280X and getting ~475-550Kh/s. I've seen people running 280X's getting easily 700+Kh/s. Not sure why I'm getting such a low rate. Any Ideas? Also, at this current rate, I'm getting about ~$2.40/day with 24/7 mining. Is it worth it to do this with the power cost as well as the wear on my components?

Just looking for input. Thanks.
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post #2 of 14
Need more information. What are your clocks? What's in your .bat file? What miner are you using?
     
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post #3 of 14
Thread Starter 
Quote:
Originally Posted by battleaxe View Post

Need more information. What are your clocks? What's in your .bat file? What miner are you using?

Slight overclock. 1130MHz on the GPU, 6430MHz memory. Could probably push it further, but I haven't really had time. I'm on spring break from college now so I'll look into it. I'm using cgminer 3.7.2 with the following in my .bat file:
Code:
cgminer --scrypt -o stratum+tcp://us.clevermining.com:3333  -u 1Dmfvxvr4W1z9nt83uQbWAYHyPauw5jV4m -p x -I 13 -g 2 -w 256 --thread-concurrency 8192
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post #4 of 14
Put your memory back to 1500 (6000mhz) and start decreasing your core little by little. You will likely see the hashes go up while you do this. Also put -I 18 in place of the -I 13

Start there and see what happens, I'll try to help more tomorrow. Going to bed now.
     
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post #5 of 14
Thread Starter 
Quote:
Originally Posted by battleaxe View Post

Put your memory back to 1500 (6000mhz) and start decreasing your core little by little. You will likely see the hashes go up while you do this. Also put -I 18 in place of the -I 13

Start there and see what happens, I'll try to help more tomorrow. Going to bed now.

Going back to 1070 on the core, 6000 on the memory, and setting intensity to 18, I see that my GPU usage is jumping around more, from like 65-90%. Also, my PC gets laggy, and the mouse jumps around. I imagine this has something to do with the intensity?

EDIT: Let it run at this config for about an hour, as I went to watch a TV show. Came back to 28 hardware errors and a slow hashrate. Changed to 1000 core, 1500 memory, and intensity back to 13, and I'm currently getting ~670Kh/s.
Edited by NV43 - 3/10/14 at 9:44pm
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post #6 of 14
I have mine slightly underclocked with 1000 core, 1500 mem and 1050 vddc

With these settings

-I 13 -g 2 -w 256 --thread-concurrency 11200

They stay constantly between 690-710 and around 65c
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post #7 of 14
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Quote:
Originally Posted by Rage19420 View Post

I have mine slightly underclocked with 1000 core, 1500 mem and 1050 vddc

With these settings

-I 13 -g 2 -w 256 --thread-concurrency 11200

They stay constantly between 690-710 and around 65c

These settings so far are working well for me, getting 670Kh/s. Haven't tried thread-concurrency at 11200 yet though. Still using 8192. Undervolted to 1150, but not sure how low its safe to go and not sure how to test that.

EDIT: Tried 11200, and it resulted in the same choppiness that gave me 28 hardware errors above, so I'm going to stick with 8192 for now.
Edited by NV43 - 3/10/14 at 10:53pm
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post #8 of 14
Quote:
Originally Posted by Rage19420 View Post

I have mine slightly underclocked with 1000 core, 1500 mem and 1050 vddc

With these settings

-I 13 -g 2 -w 256 --thread-concurrency 11200

They stay constantly between 690-710 and around 65c

^ This

1000/1500 is a known setting that works well. High OC's don't really help with AMD cards and mining. They do seem to help on Nvidia cards and mining though. Not sure why but I think its just the way the thread depth is written or something on the miner. Nice job.

As Rage said; the next thiing to do is get your voltage as low as you can go stable. Decreasing your power is what its all about once you have your hashes figured.
Edited by battleaxe - 3/11/14 at 5:43am
     
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post #9 of 14
Thread Starter 
Quote:
Originally Posted by battleaxe View Post

^ This

1000/1500 is a known setting that works well. High OC's don't really help with AMD cards and mining. They do seem to help on Nvidia cards and mining though. Not sure why but I think its just the way the thread depth is written or something on the miner. Nice job.

As Rage said; the next thiing to do is get your voltage as low as you can go stable. Decreasing your power is what its all about once you have your hashes figured.

What's the best method for undervolting? Just keep dropping my voltage while mining until my computer locks up, then raise it a bit?
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post #10 of 14
Quote:
Originally Posted by NV43 View Post

What's the best method for undervolting? Just keep dropping my voltage while mining until my computer locks up, then raise it a bit?

Pretty much.
     
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