Bitcoin Forum

I've just started mining this week, and have tried to optimise my set up myself, but I'm still not achieving what others are reporting on my present set up.

I'm mining off a ATI Radeon HD5770 with 1GB memory, and this is not a dedicated card - its running my PC, too. I'm using the phatk kernel on the phoenix miner. Vectors, hd5xxx+ and fastloop are all on. Aggression is 8, and worksize is 128. I've joined the 50BTC pool, but for no good reason. If there is somewhere better to be, I'm open to suggestions there.

Some questions:

• At present, I'm getting ~185MH/s when the card is working, but not for a lot of the time. My average is setting around 60MH/s. I've heard from others that it's possible to get +20MH/s on my card, on similar settings, so I think I might be missing something crucial here. I am also curious as to why I'm only mining 30% of the time.
• I'm getting about 18-20% of my results rejected, too, and from what I understand, the aim here is to be at least under 6-8%. Any ideas as to what is letting me down on this count?

Many thanks!

You most probably need to increase aggression. Have you checked Mining hardware comparison (https://en.bitcoin.it/wiki/Mining_hardware_comparison#AMD_.28ATI.29) on the wiki? It has some examples in the right column.

Notice most of the entries in that chart are overclocked cards. Also, cards differ from manufacturer to manufacturer. Some are better at overclocking.

I assume you are using Windows? Can't help with software setup if so. Your driver and AMD SDK versions have an influence, too.

(EDIT: URL)