Topic: The Most Efficient Rig - page 2. (Read 6440 times)
I cannot emphasize enough how inefficient the 5830s are. 6950s are easy to find right now and offer good performance.
Stuff as many radeon 5830's in a motherboard as possible with optimal cooling.
Nothing comes close in terms of price/efficiency, unless you can get a really good deal on 5850s or a dual gpu.
They're mostly sold out though.
Nothing comes close in terms of price/efficiency, unless you can get a really good deal on 5850s or a dual gpu.
They're mostly sold out though.
The 5830's are anything but efficient. It is however the best price/performance (not efficiency) if you can find it cheap enough... I picked up a few at $109/card.
By using the data from the mining harware comparison, here's a power effecincy comparison:
5830: 300 MH / 200 W = 1.5 MH/W
5850: 335 MH / 180 W = 1.8 MH/W
5870: 420 MH / 210 W = 2.0 MH/W
5970: 780 MH / 350 W = 2.2 MH/W
6870: 300 MH / 175 W = 1.7 MH/W
6950: 350 MH / 200 W = 1.7 MH/W (2GB Unlocked)
6970: 350 MH / 200 W = 1.7 MH/W
6990: 770 MH / 410 W = 1.8 MH/W
As you can see, the 5830's actually as bad as it gets for price/power efficiency, but if I found them cheap enough i'd surely pickup a few.
As far as building the most power efficient system I dont think its worth worrying too much about CPU/Board/Memory. For a dedicated miner, the CPU usage is minimal, and thus the power draw by CPU is negligible (unless you're also going to CPU Mine, but why?).
So, in the end, you're left with the GPU as the deciding factor in how efficient your rig is. Refer to the table above and just pick whatever's available..
depend price/scale.
if new AMD A38x0 APU is cheap enough, maybe using them on small mITX boards w/o discrete GPU, become interesting ?
just stack'em all !! like confetti, hundreds, thousands
if new AMD A38x0 APU is cheap enough, maybe using them on small mITX boards w/o discrete GPU, become interesting ?
just stack'em all !! like confetti, hundreds, thousands
They'd have to be crazy cheap. The llano chips have 400SP max I believe? That's like 1/4th of a 5870, so it'd have to be about $50-$75 for mobo+cpu+ram+HDD+psu
plug 2Gb stick for $25(?), $35 CPU, $15 USB-flash, $20 PSU and here you go !!
but again, thats meaningful, only if APU's/boards is reasonably-priced, which is not case, yet.
depend price/scale.
if new AMD A38x0 APU is cheap enough, maybe using them on small mITX boards w/o discrete GPU, become interesting ?
just stack'em all !! like confetti, hundreds, thousands
if new AMD A38x0 APU is cheap enough, maybe using them on small mITX boards w/o discrete GPU, become interesting ?
just stack'em all !! like confetti, hundreds, thousands
They'd have to be crazy cheap. The llano chips have 400SP max I believe? That's like 1/4th of a 5870, so it'd have to be about $50-$75 for mobo+cpu+ram+HDD+psu
depend price/scale.
if new AMD A38x0 APU is cheap enough, maybe using them on small mITX boards w/o discrete GPU, become interesting ?
just stack'em all !! like confetti, hundreds, thousands
if new AMD A38x0 APU is cheap enough, maybe using them on small mITX boards w/o discrete GPU, become interesting ?
just stack'em all !! like confetti, hundreds, thousands
Stuff as many radeon 5830's in a motherboard as possible with optimal cooling.
Nothing comes close in terms of price/efficiency, unless you can get a really good deal on 5850s or a dual gpu.
They're mostly sold out though.
Nothing comes close in terms of price/efficiency, unless you can get a really good deal on 5850s or a dual gpu.
They're mostly sold out though.
I chose an e-350 motherboard for my current computer mostly because of its low power consumption. It only has one PCIe slot but it works perfect for my purposes. I tend to think a fast CPU is kind of overrated these days, GPUs are much more efficient at a lot of the grunt work anyway as we see with mining. I could lower consumption further by booting from a 2.5" laptop drive instead of a 3.5" "green" like I have, but it wouldn't make a huge difference in the total. You can get single core Atom boards that are lower powered and cheaper as well but I haven't tried them for mining. Of course none of those ITX boards will work with more than one GPU.
600 watts is 600 watts, for example, it doesn't matter what year the hardware was made. If it were even possible, it wouldn't matter if you had a 486DX2/66, as soon as you drop video cards in the power consumption goes up, and so does your electric bill. you can kill a few watts by not having a CD drive, booting from a USB stick, etc. But your biggest power consumption is your video cards.
Only you can make this decision. Figure out your desired hash rate and find the most power efficient card combination to achieve that rate, and determin if its cost effective given your electrical rate and budget. The power consumption of the CPU and ram is nothing compared to what the gpus will consume.
Only you can make this decision. Figure out your desired hash rate and find the most power efficient card combination to achieve that rate, and determin if its cost effective given your electrical rate and budget. The power consumption of the CPU and ram is nothing compared to what the gpus will consume.
I am looking for a rig that will run well and will not destroy my electricity bill. I am not looking to be cheap, I want this to be a powerful rig, but I don't want to go for the "new, top of the line" stuff. I am looking for the current consumer market stuff that will be easily traded off when looking at what it can compute vs. its electrical consumption.
What would this efficient rig consist of?
Thanks Bitcoiners
What would this efficient rig consist of?
Thanks Bitcoiners
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