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Author Topic: Just started, don't think my Mhash/s Speed is where it should be?  (Read 1651 times)
raptorman190
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August 19, 2013, 11:09:47 PM
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I just discovered Bitcoin mining earlier today. I was wanting to dabble into it, nothing serious, as I only have a laptop.

I am using a GT730M graphics card in my laptop for my mining. But it is only giving me 20.5 Mhash/s. My friend has a 7850 graphics card and has a speed of 250 Mhash/s. I highly doubt that his card is over 12x faster than mine. Unless there is something I am not understanding?

If it matters, I am in Slush's Pool. Using GUIMiner. With 1 worker on the GPU.

Thank you! I hope I can learn some more.
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pie3636
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August 20, 2013, 12:20:59 AM
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I tried mining with my GT 630M graphics card, and i had a pretty similar hash rate (15 MH/s or so). Maybe this type of graphics card is totally not adapted to mining ? If you mine on a laptop, you should know that it will never be worth it, even on a decent computer you can't expect to make money... Mining is now reserved to those who can afford ASICminers. Even altcoins mining does not seem really profitable.

Hope I could help Wink
pie3636
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August 20, 2013, 05:01:27 AM
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Yeah GPU mining is pretty much over.

I do know why you are having some performance issues though.

The problem is both of you are running on Nvidia Graphics Cards. The way that Nvidia designed their cards vs. the way AMD designed their cards created a big difference in Bitcoin (SHA 256) performance. Pretty much by luck AMD cards ended up being pretty good with bitcoin while Nvidia can't do crap.

I would not recommend trying to mine Bitcoin at all with the speeds you listed. You will be paying WAY more in power costs then what you will make.

I hope this helped.
silvergoldandbitcoin
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August 20, 2013, 05:15:48 AM
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I tried mining with my GT 630M graphics card, and i had a pretty similar hash rate (15 MH/s or so). Maybe this type of graphics card is totally not adapted to mining ? If you mine on a laptop, you should know that it will never be worth it, even on a decent computer you can't expect to make money... Mining is now reserved to those who can afford ASICminers. Even altcoins mining does not seem really profitable.

Hope I could help Wink
pie3636

I just discovered Bitcoin mining earlier today. I was wanting to dabble into it, nothing serious, as I only have a laptop.

I am using a GT730M graphics card in my laptop for my mining. But it is only giving me 20.5 Mhash/s. My friend has a 7850 graphics card and has a speed of 250 Mhash/s. I highly doubt that his card is over 12x faster than mine. Unless there is something I am not understanding?

If it matters, I am in Slush's Pool. Using GUIMiner. With 1 worker on the GPU.

Thank you! I hope I can learn some more.

So you both know:

First NVIDIA GPUs are extremely inefficient when it comes to mining. Also Laptop GPUs are of course more underpowered than desktop GPUs.

Basically the GPUs you have are not worth it to mine with. If you really want to mine the I would say spend .3 bitcoin to get a block erupter ASIC off of someone here on the forums.

But be warned: even with the seemingly low price of .3 bitcoin, with the Bitcoin difficulty going up and up and up, these are not likely to make any Return on Investment (ROI).

You should only get one if you just want to participate in mining, purely as a hobby.

Good luck to you both, and welcome!!

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