Bitcoin Forum

Just wondering if an average of 39.8 Mhash/s is good...and is there any way to improve it? GPU- AMD Radeon HD 7640G with 512 MBytes memory. Tried running off of processor...not to well, 2 Mhash/s

Ok, but do you have free electricity?

You can compare your results here: https://en.bitcoin.it/wiki/Mining_hardware_comparison

From the looks of it it seems you are mining from a laptop.

If you already leave your laptop on 24/7 and mine when you are not using it, why not. However, the overall hashrate of 39 Mhash/s isn't that great compared to a desktop graphics card.

But as what soulmann said, it wouldn't be profitable at all unless you have free electricity. You would be looking at about $6 a month with that setup (Calculator here: http://www.alloscomp.com/bitcoin/calculator )

What does this have to do with anything he is asking?

Maybe he use a type 3000 Honda generator  ;D

39Mh/s is only giving you return of ~$0.25 per day, so it's probably not worth it.

I've got some FPGAs and I get 85 euro week...
With BTC at 95 euro...

Do your elaborations! ;)

Ill put this on a desktop I have and will reply here...I also have a debain linux server, any way to mine from that?

To be worth doing you need atleast 500m/h even that is super low....

If I buy a 704 Mhash/s card, how long will it take to pay it off? $281

Possibly never. As difficulty rises it'll reach a point where mining isn't profitably, when electricity costs exceed your bitcoin return. Try a mining calculator (http://dev.bitcoinx.com/profit/ (http://dev.bitcoinx.com/profit/)) with your electricity costs, mh/s, and projected difficulty levels.

It's not great. I started out at 200MH/s with a low-end ATI and that was slow then. Mining is beginning to be really questionable unless you have an in on having an Asic. And that's a minefield in itself.

u should buy 7950 GPU.
Its good for mining.

 That's low if your trying to make good profit. You should upgrade to a stronger rig.

I think it's relevant, because if he has free electricity, then his has rate is fine because he will make money no matter what. However, if he doesn't than it is not a good hash rate because he will probably spend more in electricity that he will get for that.

However, honestly, 40mh/s is nothing in the overall scheme of things (though still better than nothing), and if you wanted real profits you should get a higher level amd.

https://en.bitcoin.it/wiki/Mining_hardware_comparison
Use the hardware comparison to get a general idea of what is possible. Keep in mind that each card is not the same. Depending on the brand, cooling setup, quality of batch you have, and your ability to overclock you will be able to push your MHash/sec somewhere between stock and the highest achieved stable on that list.