What do you guys think of this rig?

[xenon481]

Looking like next difficulty jump may be closer to 100% than 50%...
http://forum.bitcoin.org/index.php?topic=9723.0

The current expected difficulty increase is ~67%. I expect that to go up a little more, but it shouldn't come anywhere close to 100%.

[DarkKnightNomeD]

Paying anything over $0.75 per MHash/s is a losing proposition and anything just under that isn't worth the risk.

For 1,200 MHash/s, you would need to try to spend less than $800 (preferably less than $750 to reduce risk).

Unfortunately, 4x 5850 alone costs over $700.

And as far as CPU goes, a Sempron is overkill.

check this out

http://www.youtube.com/watch?v=G5f_e4P6gMA


he says hes getting around 32Ghash

[bitlock]

My solution is to stick a HD5830 or similar card in an old pc (3-4 years old) with no harddrive, maybe 1gb ram (whatever it has), upgrade the power supply, and run the system off linux on a USB stick....about as cheap as it can get for me....
...until the bitcoin return and heat become unbearable....

You never know, some genius might be able to double or triple the throughput on these GPU's....then it's game on again...

[Gameover]

My solution is to stick a HD5830 or similar card in an old pc (3-4 years old) with no harddrive, maybe 1gb ram (whatever it has), upgrade the power supply, and run the system off linux on a USB stick....about as cheap as it can get for me....
...until the bitcoin return and heat become unbearable....

You never know, some genius might be able to double or triple the throughput on these GPU's....then it's game on again...

only if you are that genius and keep it to yourself, otherwise the whole community will double or triple, making the increase meaningless at the next difficulty update

[SchizophrenicX]

Hey how do I use the PCIe x1 slots for the GPU? Is there some kind of adapter? Or is it simply not possible?

[d3c0n808]

Hey how do I use the PCIe x1 slots for the GPU? Is there some kind of adapter? Or is it simply not possible?

http://forum.bitcoin.org/index.php?topic=6128.0

[SchizophrenicX]

Hey how do I use the PCIe x1 slots for the GPU? Is there some kind of adapter? Or is it simply not possible?

http://forum.bitcoin.org/index.php?topic=6128.0

Hi d3c0n808, thanks for point me in the right direction. I'll see if my local store has got these. It'll drive down the cost of my build by a huge margin.

[d3c0n808]

Hey how do I use the PCIe x1 slots for the GPU? Is there some kind of adapter? Or is it simply not possible?

http://forum.bitcoin.org/index.php?topic=6128.0

Hi d3c0n808, thanks for point me in the right direction. I'll see if my local store has got these. It'll drive down the cost of my build by a huge margin.

You might as well maximize what hardware you already have and use these vs buying a new board for every 2 or 3 new cards....poclbm doesnt use much cpu resources so a amd 4000+ should have no problem even if you only have pci slots....those can be adapted for hashing and as its been discussed the bandwidth reduction doesn't mean much mayb 10 mhash which is alot cheaper than buying a new board, new psu, etc etc