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A is my PSU enough thread, for a hobbyist project.

post #1 of 8
Thread Starter 
So I'm entertaining the thought of becoming a miner (that's a little joke phrasing for a new fad), and thought it might be fun to build a test rig to play with.

I recently swapped out my Antec EA500 (I'm fairly sure this is the first run seasonic units), and I'd like to use it to build a simple rig that will be used to do pretty much nothing but load video cards (similar to F@H). So if the computer weren't to do much of anything but this, would the EA500 aged as it is be cool running 2 5870s?

It says it has 17A on each rail, with a max loading of 408.5W on 12V, but it only has 2 6-pins and I'd have to molex up the other 2. So it all sounds a bit dicey to me. I could probably swap out my x650 into the other rig if cornered but that'd make me sad.
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post #2 of 8
It might work because AMD recommends a 600W power supply to power a system with two 5870s in it (proof), but they're talking about power supplies with a peak rating of 600W, not a continuous rating. Not only that, but they're also considering the possibility of putting load on the CPU at the same time as the graphics cards.

So I won't say that I guarantee it; instead, I'll just say that I wouldn't be surprised if it runs without any problems. After all, the CPU won't be doing very much at all while the 5870s are folding (well, I'm not absolutely sure about this because I don't fold).
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It's a computer!
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post #3 of 8
Not possible two cards would pull upto 460W under full load. Might work given the PSU can deliver 500W+ but it'll be a close shave.
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post #4 of 8
Thread Starter 
I think unless I get a compelling reason not to, I'll try it out. I don't really listen to AMD too carefully
techpowerup measured their 5870 at 212W Max (under furmark). And 144W peak under 3dmark, which I imagine is more realistic a load.

My current rig with a 6950 2GB (unlocked) is pulling 248W from the wall, and it should be drawing slightly more power than a 5870, so I think I'll toss them in and load em on the kill-a-watt and keep a careful eye open.
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Bleeding Edge
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post #5 of 8
Don't bitmine. Trust me, since the Times article and now the OCN thread the number of miners looking for free cash has soared astronomically. Since the amount of bit coins released via mining remains a constant, no matter how man people are mining, that means that the profitability of bitmining has plummeted.

If you got into the act a year ago, you'd be golden. $500 split between fifty people is $10 each. But now? $500 split between five thousand people is $0.10 each. At that rate you're losing money.

Simply put, it isn't profitable, and the OCN user who posted the thread doesn't have a very good grasp of economics.

If you want to make money via BTC, buy some BTC and wait for their value to go up.
post #6 of 8
Tom's Hardware was able to get a total system power draw of 561W from the wall outlet with Furmark:





Here is their test system:

http://www.tomshardware.com/reviews/...0,2422-10.html



Now, if I assume 80% efficiency, then that would mean the system pulled about 448W from the power supply during the test using their test system. So compare their test system to the one you're going to be using for folding.

In other words, it should be fine.
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It's a computer!
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post #7 of 8
Thread Starter 
Quote:
Originally Posted by Phaedrus2129 View Post
Don't bitmine. Trust me, since the Times article and now the OCN thread the number of miners looking for free cash has soared astronomically. Since the amount of bit coins released via mining remains a constant, no matter how man people are mining, that means that the profitability of bitmining has plummeted.

If you got into the act a year ago, you'd be golden. $500 split between fifty people is $10 each. But now? $500 split between five thousand people is $0.10 each. At that rate you're losing money.

Simply put, it isn't profitable, and the OCN user who posted the thread doesn't have a very good grasp of economics.

If you want to make money via BTC, buy some BTC and wait for their value to go up.
Good advice, but I'm not being sarcastic when I suggest this will be a hobbyist project. If I can break even on the cost of materials and power by the time I am done I'll be happy as it will give me a chance to do things computing-rigwise i've never been able to do before.

If I don't break even on power costs I'll be annoyed but I won't be devastated heh.
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Bleeding Edge
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i7 2600k @ 5.0Ghz 24/7 ASUS P8P67PRO AMD 5870x2 8GB GSkill Ripjaw X 1600 @ CL8 
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post #8 of 8
Quote:
Originally Posted by Phaedrus2129 View Post
Don't bitmine. Trust me, since the Times article and now the OCN thread the number of miners looking for free cash has soared astronomically. Since the amount of bit coins released via mining remains a constant, no matter how man people are mining, that means that the profitability of bitmining has plummeted.

If you got into the act a year ago, you'd be golden. $500 split between fifty people is $10 each. But now? $500 split between five thousand people is $0.10 each. At that rate you're losing money.

Simply put, it isn't profitable, and the OCN user who posted the thread doesn't have a very good grasp of economics.

If you want to make money via BTC, buy some BTC and wait for their value to go up.
Personally I think the guy who posted the thread destroyed the small economy of it.... Its profitability sank in the past 48 hours due to a massive influx of noobs....


This wasn't designed for mass user-base. I'm pretty upset about it cus I was planning on setting up a server farm for mining. After what happened just today, I put all my plans on that for hold... Cancelled $1500 in new parts.
 
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