5870s running on Phoenix 1.7.5 | Bitcointalksearch.org

iopq

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Quote from: crazyates on September 17, 2012, 12:36:11 AM

Depends on what SDK you're using. Do you have 2.1? 2.5? or something newer like 2.6?

2.1 does best with worksize of 128 and a lower memory, like 170. 2.5 does better with worksize of 256, but a memory of 300. 2.6 or newer should not be used on a 5xxx card.

Now I was using CGMiner, but I ran my 5870 with SDK 2.5 at core:980 mem:300 kernel:phatk worksize:256 vectors:2 for ~460MH/s.

not true, 256 + underclocking gives better hashrates even on 2.1 which I am running right now

keystroke

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advocate of a cryptographic attack on the globe

Thanks

Got some increased hashes so I appreciate the help!

os2sam

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Quote from: keystroke on September 17, 2012, 01:06:36 AM

Wow, nice speed! It's been awhile but I think 2.1. How can I tell? Thanks!

Uh, it's been a long time since I looked. I use GPU Shark and look in the tools menu.
Sam

keystroke

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Activity: 900

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advocate of a cryptographic attack on the globe

Wow, nice speed! It's been awhile but I think 2.1. How can I tell? Thanks!

crazyates

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Depends on what SDK you're using. Do you have 2.1? 2.5? or something newer like 2.6?

2.1 does best with worksize of 128 and a lower memory, like 170. 2.5 does better with worksize of 256, but a memory of 300. 2.6 or newer should not be used on a 5xxx card.

Now I was using CGMiner, but I ran my 5870 with SDK 2.5 at core:980 mem:300 kernel:phatk worksize:256 vectors:2 for ~460MH/s.

keystroke

hero member

Activity: 900

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Thanks! How fast?

ditchmagnet

newbie

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I get my best phoenix results using:

-k phatk DEVICE=0 VECTORS2 BFI_INT AGGRESSION=12 WORKSIZE=128

and this modified phatk kernel:

https://bitcointalksearch.org/topic/further-improved-phatkdia-kernel-for-phoenix-sdk-26-2012-01-13-25135

I think I personally was getting better results with the 2011-12-21 version.

keystroke

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Activity: 900

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Many times but never close enough for the finer points

Thanks! I just got 10Mhash more per card by adding WORKSIZE=128.

os2sam

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Quote from: keystroke on September 16, 2012, 03:01:17 AM

Hey everyone,

I have a few 5870s running Phoenix 1.7.5 and they each get about 400Mhash/s. I use the phatk kernel. I haven't investigated switching things in awhile, and maybe it is late in the game now that the ASIC revolution is around the corner. But is this an acceptable hashrate? I saw some posts where people were getting 420+Mhash/s. I'm just wondering it its even worth my time at the moment to upgrade & test newer miners & kernels. Besides temperature issues this system has been stable since last spring so I haven't tinkered with it.

They are on Slush's pool using his new Stratum mining protocol and rejects have dropped from .84% to .07% under Stratum.

Thanks!

Have you checked the Mining Hardware comparison chart?

https://en.bitcoin.it/wiki/Mining_hardware_comparison

Sam

keystroke

hero member

Activity: 900

Merit: 1014

advocate of a cryptographic attack on the globe

Hey everyone,

I have a few 5870s running Phoenix 1.7.5 and they each get about 400Mhash/s. I use the phatk kernel. I haven't investigated switching things in awhile, and maybe it is late in the game now that the ASIC revolution is around the corner. But is this an acceptable hashrate? I saw some posts where people were getting 420+Mhash/s. I'm just wondering it its even worth my time at the moment to upgrade & test newer miners & kernels. Besides temperature issues this system has been stable since last spring so I haven't tinkered with it.

They are on Slush's pool using his new Stratum mining protocol and rejects have dropped from .84% to .07% under Stratum.

Thanks!

Topic: 5870s running on Phoenix 1.7.5 (Read 2450 times)