Re: [ANN] [HVC] Heavycoin - Ultra-secure, Decentralized Block Reward Voting, Fast
No, I know the math but I was just wondering why you are running your cards so inefficiently 
? Even at 21.6Mhash per card I am drawing about ~660W. Low energy costs are one of the main beauty's of this coin 
Only requires 0.880mv @ 1000Mhz for me. With fans @ 75% and my cold air intake fan in the garage turned on I am getting temps from 35C - 42C which is damn nice compared 75C-85C mining scrypt
? Even at 21.6Mhash per card I am drawing about ~660W. Low energy costs are one of the main beauty's of this coin Only requires 0.880mv @ 1000Mhz for me. With fans @ 75% and my cold air intake fan in the garage turned on I am getting temps from 35C - 42C which is damn nice compared 75C-85C mining scrypt
what is your vcore? 660 for 4x 280x seems too low even on heavycoin
660W is the highest I have ever gotten. I can go as low as 405W @ 17.3Mhash/950Mhz/0.856V but for now I am getting ~480W @ 19.8Mhash/1080Mhz/0.930V.
Seems like you have room for improvement but obviously depends from the cards and what they can do.
You are currently drawing 7.16W per Mhash. I am at 5.94W per Mhash. So ideally you could cut down your energy draw another 15-20%. 290's should also be a bit more energy efficient than 280x's.
Pls can you share your vcore and conf.. ?
Thank you
I am using the standard conf: --lookup-gap 0 -g1 -I 8 --worksize 64
I have custom modified my bioses with a HEX editor to get low Vcore values and the card to still boot. But I think with Sapphire cards you can go pretty low using Trixx also.
Here is a list of Watt/Mhash/Mhz/Vcore's I am using:
4x 17,3Mhash @ 950Mhz/0.856V = 405W
4x 18.3Mhash @ 1000Mhz/ 0.880V = 445W
4x 19Mhash @ 1040/0.900V = 460W
4x 19.8Mhash @ 1080/ 0.920V = 480W
I am not using higher setting such as 1150Mhz because it demands too much voltage