Quote from: fizzisist on October 23, 2011, 05:43:46 AM

Quote from: ztex on October 21, 2011, 02:09:21 PM

Quote from: fizzisist on October 21, 2011, 01:57:12 PM

You're right, the power supply design is different and could definitely vary in efficiency. A more even comparison might be to see what the power usage of your board is when mining at 125 MH/s. Could you test that out? I wouldn't be surprised if your design was still more efficient, but I doubt it would be 50% more so.

The design of the initial release required 5.9W at 128 MHz. (release number 110826 on http://www.ztex.de/btcminer).

If your 1.2V voltage regulators are becoming hot (IMHO you are using two), they are at least a major part of the problem.

Thanks, clearly you are getting better efficiency. The 1.2V regulators are not hot on this board, but they are slightly warm. According to the datasheet, they should have roughly 90% efficiency in our configuration. I doubt your regulator gets much better than that, if at all. Your advantage probably comes from the FPGA code, then. Interesting! I'm curious to see what you're doing differently that gives this better efficiency.

So wtf... have you forensically analysed the code yet? Cheesy

PS: our board looks cooler Tongue