bitcoin mining on a R9 290 4GB Sapphire TRI-X

[Jacob Bowerman]

im getting 2 R9 290 4GB Sapphire TRI-X for gaming and bit coin mining however as far as i can find at the moment the hash rate of them is only around 800kh/s. Is this true? if so why is a $700-800 GPU only doing that amount? here is the exact GPU
http://www.pccasegear.com/index.php?main_page=product_info&products_id=26476

 

[StarBG]

The math in the bitcoin system gets harder and you get less kh/s and also many ppl use bitcoin etc. and with special machines for this purpose.

 

[Jacob Bowerman]

The math in the bitcoin system gets harder and you get less kh/s and also many ppl use bitcoin etc. and with special machines for this purpose.

but I've got a cheap $80 GPU getting 28mh/s and my mums laptop is getting 100mh/s and its not even a gaming laptop or anything

 

[maxiim]

The R9 290 is a 400$ GPU, the only reason it costs so much is demand. As far as the hash rate it sits just fine below the 290x(high 800s to high 900s) and above the 280x which shows to be in the 700s.

 

[Jacob Bowerman]

The R9 290 is a 400$ GPU, the only reason it costs so much is demand. As far as the hash rate it sits just fine below the 290x(high 800s to high 900s) and above the 280x which shows to be in the 700s.

but 800kh/s? thats crap. how come my $80 shit nvidia can do better even though AMD are meant to be better, it has a higher clock,memory clock, more memory and is 512bit

 

[maxiim]

I'm not sure what you're expecting exactly, the only single card configs breaking 1k are the dual gpu 7990s. Hence miners running 3-4 GPUs per system to mine.

 

[das_stig]

Most miners are giving up on Bitcoin and switching to Litecoin, as hitting a Bitcoin is getting harder to achieve.

 

[thebestbev]

I think you've got your sizes a bit confused.

R9 290 does c. 750Mhash when mining bitcoin and c. 750KHash when mining litecoin.

So It'll do about 7.5 times as much as your mums laptop.

HOWEVER

I wouldn't be investing any money into Bitcoin mining right now. Hardware is available at a very great sum which has massively increased the difficulty of the mining and taken it out of the realm of high end GPUs. ITs just not financially viable to mine Bitcoins. Litecoins maybe...it really depends how/whether their value increases