I just purchased 5850 since it seems that price/performance is better then on any other card I've looked at.
Of course I did not benchmark it myself yet, but looking at the performance table - https://en.bitcoin.it/wiki/Mining_hardware_comparison - seems like 5850 is optimal choice.
If it really can be tuned to do 330 Mh/sec, then 3 cards can do 1 GH/sec - and the average cost of HD5850 is about $200 +/- $30, i.e. about $600 for 1 GH/sec rig.
Compare that to $700 pricing on HD6990 based cards, for LESS then 1GH/sec performance.
Some people suggest this is special pricing due to ATI's attempt to reduce inventory (http://www.mmo-champion.com/threads/910965-Sapphire-Xtreme-Radeon-HD-5850)
Anyway, I'm ordering 3 more of them now.... it's also good for gaming, can be liquidated if need be.
Topic: Please explain the love for the 5830s and 5850s - page 2. (Read 2309 times)
its simple.. 5830's are the best "bang" for your buck
I also injoy the fact that they do rather well side by side with keeping cool.
The watt difference is miniscule (price-wise) compared to the benefit of the added MH/s. Yes you will burn 72 kWh/month more worst case scenario, but 5830 will also "mine" 30% more BTC than the 5770 which very well makes up for the added cost of both the initial purchase and the electricity bill.
Also, if you are planning on expanding on your mining operations with a second/third/n-th mining rig, it makes sense to put as powerful a card as you can, in order to save motherboard space. And in the long term, that will save you power (less machines to output same MH/s)
Also, if you are planning on expanding on your mining operations with a second/third/n-th mining rig, it makes sense to put as powerful a card as you can, in order to save motherboard space. And in the long term, that will save you power (less machines to output same MH/s)
I'm looking into setting up a 2-4x gpu rig. In terms of power/performance the 5770s look pretty good.
5770 is around 200 Mhash/s and the max power draw is around 108 watts.
Everywhere I've looked the 5830 is at least 50% higher power draw and some places have it over 200 watts under max load. So the 5830/5850 is 150-200 watts which makes it much less efficient then the 5770. Even if the 5850 call pull 300 Mhash/s most sites put it close to 200 watts full load. You'd be better off with two 5770s (400 mHash/s) for the same power. If you look at 3 or 4 in a rig then the 5770 is even better.
Price wise the 5770 is $95-$110 and given the power savings I don't see why people buy up the 5830s like they are gold when you're better off with the 5770?
With 4 5770s you're looking at 800-900 Mhash/s for 432 watts. The 5870s can get close to that but they're impossible to find, and just as (or more) expensive. Four 5830s/5850s are hard to find and would use a boat load more power without much more performance.
I must be missing something, thanks for any help you can offer. =)
5770 is around 200 Mhash/s and the max power draw is around 108 watts.
Everywhere I've looked the 5830 is at least 50% higher power draw and some places have it over 200 watts under max load. So the 5830/5850 is 150-200 watts which makes it much less efficient then the 5770. Even if the 5850 call pull 300 Mhash/s most sites put it close to 200 watts full load. You'd be better off with two 5770s (400 mHash/s) for the same power. If you look at 3 or 4 in a rig then the 5770 is even better.
Price wise the 5770 is $95-$110 and given the power savings I don't see why people buy up the 5830s like they are gold when you're better off with the 5770?
With 4 5770s you're looking at 800-900 Mhash/s for 432 watts. The 5870s can get close to that but they're impossible to find, and just as (or more) expensive. Four 5830s/5850s are hard to find and would use a boat load more power without much more performance.
I must be missing something, thanks for any help you can offer. =)
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