Howdy! Friend made me aware of BTC last night, and I am utterly fascinated by this concept!
Bought a couple BTC to get seeded, and then started pool mining using my laptop GPU...pathetic 8.6Mhash. I expect I'll get a little better out of the ATI 6770 in my gaming rig, but still nothing to write home about.
I recently got my hands on an HP DL785 G5 server that has 11 PCIe slots...assuming I can power the thing without blowing circuit breakers in my apartment (thank god all my utilities are included), what'd produce higher Mhash: 11 x Nvidia 8400 GS 1GB cards, or 5 x ATI 5750 1Gb cards, which will (after shipping) end up costing about the same...
Anyhow, happy to be part of something so cool and innovative!
Rob
Bought a couple BTC to get seeded, and then started pool mining using my laptop GPU...pathetic 8.6Mhash. I expect I'll get a little better out of the ATI 6770 in my gaming rig, but still nothing to write home about.
I recently got my hands on an HP DL785 G5 server that has 11 PCIe slots...assuming I can power the thing without blowing circuit breakers in my apartment (thank god all my utilities are included), what'd produce higher Mhash: 11 x Nvidia 8400 GS 1GB cards, or 5 x ATI 5750 1Gb cards, which will (after shipping) end up costing about the same...
Anyhow, happy to be part of something so cool and innovative!
Rob
Using your laptop to mine is a really good way to shorten it's life.
As for the server. Most (if not all) GPU cards that support OpenCL will require an x16 slot - so i would first check how many of those that are in the server. Then of course, most server power supplies are not big enough to support that one CPU anyway. For example an AMD 7970 GPU requires a 2 pcie power adapters, 1 is 75Watts, one is 150 Watts. So without any overclocking - you are looking a about 225 watt draw per card. So you will need to look at that.
Also, good mining gpu's will take 2 slots of space so at best you can get in 5 physically if all slots were x16. and that would be with no air gap to speak of between them - watercooling would be a solution in this case. And then without hacked drivers, 4 GPU's would be the most.
So given all requirements met - 4 GPU's. This is kind of an overkill machine for this purpose.
Also, don't mine with NVidia cards - use AMD - that hash rate on NVidia is horrible compared to the AMD Radeon's.
Here is a good general card comparison guide (a little dated) but really good starting point:
https://en.bitcoin.it/wiki/Mining_hardware_comparison
Check out this thread for a good discussion on building a mining rig:
https://bitcointalksearch.org/topic/building-a-mining-rig-9036
Hope this helps...
RoboCoder
