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Author Topic: Slow CPU-mining on new i7 MacBook  (Read 1541 times)
Ali
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June 15, 2011, 04:17:21 PM
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I've got a new 15" MacBook with 2 GHz Intel Core i7.

All 8 cores generate only like 4 khash/s with RpcMiner.app.
Even my much older Intel Core 2 Duo is capable to generate at least 6 khash/s and that one has 6 cores less.

What is going wrong? (I know that this kind of mining is not effective but its for free.
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nwolf
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June 15, 2011, 04:30:36 PM
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Was your Core2Duo also a MacBook? Could be the app.

I get ~1.2MHash/s on my i5-430M on W7, but it varies greatly with the use of the computer. It's also not really "free" unless you are not using your computer, because CPU mining usually slows your computer greatly (GPU mining does not, unless you're gaming).
Ali
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June 15, 2011, 04:40:13 PM
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Nah, the Core2Duo is a PC.

I also have an 2008' MacBook but I don't bother to even try that.
lebuen
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June 15, 2011, 05:16:23 PM
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Don't even bother to use your CPU for mining, it's simply not efficient enough. You will pay more for electricity than you will earn from bitcoins. Search the forums.
Ali
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June 15, 2011, 05:19:43 PM
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In this scenario I don't pay for the electricity so its free bitcoins.
torusJKL
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June 15, 2011, 05:35:17 PM
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But you use the Mac's CPU heavily and thus have higher risks of parts failing quicker.

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Ali
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June 15, 2011, 05:51:39 PM
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The MacBook is also not mine Wink
lebuen
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June 15, 2011, 06:06:46 PM
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Well, nobody can keep you from doing it, but then you're destroying a nice MBP and steal power for some lousy cents/month.
Ali
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June 15, 2011, 06:54:09 PM
 #9

You're probably right.
I'll still mine the GPU a little.

Upgrading to OSX Lion as I heard rumours it may improve the performance (15 MHash/s currently at low temperature).
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June 15, 2011, 07:15:19 PM
 #10

With best CPUs today you can get something like 0.05 BTC/day. Worthless...

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June 15, 2011, 07:21:39 PM
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I thought that this bitcoin mining should be done on the GPU, I tried on my CPU and it was horrendous.
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June 15, 2011, 08:49:43 PM
 #12

use sse2 cpuminer like ufasoft, look in the forum for it.

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