5850 mining at 250kh/s????? | Bitcointalksearch.org

d4rkbreaker

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Quote from: crazyates on November 23, 2012, 03:35:05 PM

Quote from: bitcoindaddy on November 23, 2012, 02:55:26 PM

Quote from: AndrewBUD on November 23, 2012, 10:21:30 AM

With litecoin mining you drop your memory down to 300 ?

It doesn't matter which coin you are mining. And 300 may not work on your particular brand/card, each is slightly different. You start at 900 and work your way down 50 at a time at first, then 10 at a time, so 900, 850,800,700,etc.

Also, it does matter which coin you are mining. BTC does not need high mem speeds, but LTC does. Underclocking your RAM can severely hurt performance.

I found that out when my system kept crashing from LTC mining. Overclocking VRAM (a little) makes LTC mining more stable.

AndrewBUD

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That's what I thought ^...

I played around a little bit. Running multiple cards on a board require high system ram.

crazyates

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Quote from: bitcoindaddy on November 23, 2012, 02:55:26 PM

Quote from: AndrewBUD on November 23, 2012, 10:21:30 AM

With litecoin mining you drop your memory down to 300 ?

It doesn't matter which coin you are mining. And 300 may not work on your particular brand/card, each is slightly different. You start at 900 and work your way down 50 at a time at first, then 10 at a time, so 900, 850,800,700,etc.

Ok both of those are just completely not true. A lot of 58xx cards fail somewhere in the 500-600 range. My 5830 would not work at 650. Crashed almost instantly every time. However, dropping it right down to 300 worked just fine, and was completely stable.

Also, it does matter which coin you are mining. BTC does not need high mem speeds, but LTC does. Underclocking your RAM can severely hurt performance.

bitcoindaddy

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Quote from: AndrewBUD on November 23, 2012, 10:21:30 AM

With litecoin mining you drop your memory down to 300 ?

It doesn't matter which coin you are mining. And 300 may not work on your particular brand/card, each is slightly different. You start at 900 and work your way down 50 at a time at first, then 10 at a time, so 900, 850,800,700,etc.

AndrewBUD

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With litecoin mining you drop your memory down to 300 ?

bitcoindaddy

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Quote from: ?? on ??

Now at 300kH/s.

I get around 340 or 350 for a 5850. Try a difficulty of 7 or 8. My memory is clocked down to 300 which helps not only with speed but power consumption.

AndrewBUD

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System ram helps. It's not 100% dependent on your GPU.

01BTC10

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Maybe he's mining Litecoin.

2GOOD

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Quote from: mesquka on November 22, 2012, 08:44:17 AM

My 5850 runs at 250kh/s while I can see other people with 400kh/s. I am using cgminer, how do I increase the hashrate? Intensity IS 20.

You mean MH/s or it's kh... if so then you are mining with the CPU.. check your drivers

01BTC10

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https://en.bitcoin.it/wiki/GPU_overclocking_tools
http://www.pcworld.com/article/250644/how_to_overclock_your_graphics_card.html

For Bitcoin/Litecoin mining specific usage you need to increase core clock speed and lower memory speed. Some people will then lower the voltage for energy efficiency but it will slow the hashrate a little bit.

mesquka

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