I concur that 7970s are a poor value for mining. 7950s offer almost the same performance at ~$100 less per card.
My Gigabyte 7950s run at ~605k at stock speeds (1000/1250). My Gigabyte 7970s run at ~630k at stock speeds (1000/1375).
In my experience, the 7970s also run so hot that they don't overclock nearly as well as 7950s.
Topic: litecoin rig check (4x 7950) - page 2. (Read 11236 times)
1100w power supply should be okay from what I can find.
I guess you're planning on using risers and some custom case? 7970's are going to get you between 600 and 650kh/s, not 750. You might get 700 if you can really push them, but it's not likely. The highest I've ever been able to get is about 690, and they really weren't stable there. Gigabyte 7970C's.
You're going to need more than 4GB ram for four cards. At least double it.
There are better motherboards if you're going to run four cards off of one.
I guess you're planning on using risers and some custom case? 7970's are going to get you between 600 and 650kh/s, not 750. You might get 700 if you can really push them, but it's not likely. The highest I've ever been able to get is about 690, and they really weren't stable there. Gigabyte 7970C's.
You're going to need more than 4GB ram for four cards. At least double it.
There are better motherboards if you're going to run four cards off of one.
but kettle for example uses stj like 2000w, wasching machine also sth about 2000w, and my circuit and breaker is fine.
or am I wrong about electricity, if you got sth good to read link it pls.
to be fair, those both use specialized plugs and are on seperate circuits. or am I wrong about electricity, if you got sth good to read link it pls.
but kettle for example uses stj like 2000w, wasching machine also sth about 2000w, and my circuit and breaker is fine.
or am I wrong about electricity, if you got sth good to read link it pls.
or am I wrong about electricity, if you got sth good to read link it pls.
7970 = rip off. get yourself 7950s and overclock, much better MH/$.
You don't definitely don't need 1500W because 750W is AMD's recommendation for crossfire systems. The difference between 1 card and 2 cards is 250W, so the max each board can draw is 250W. Plus you're mining, so you're not using as much power as rendering/gaming.
You don't definitely don't need 1500W because 750W is AMD's recommendation for crossfire systems. The difference between 1 card and 2 cards is 250W, so the max each board can draw is 250W. Plus you're mining, so you're not using as much power as rendering/gaming.
Depending on what your previous rig is, this rig may be unsafe if you're plugging into a standard residential circuit.
1200W = 10A. some house's circuits are 10A per breaker, but most are 15A/20A 
Depending on what your previous rig is, this rig may be unsafe if you're plugging into a standard residential circuit.
- I am setting up second, stronger to previous one, mining rig targeting 3gh/s.
- http://www.newegg.com/Product/Product.aspx?Item=N82E16814125414
Can somebody take a look at components that I am going to use and check if everything is fine?
GPU's:
I have several choices, please point which card would you buy I am targeting this one:
Mobo&CPU:
Abit Kn9Ultra & AMD Athlon X2,2x2000MHz (I've choose such mobo bc I can get it second hand for a very nice price)
http://abit.ws/page/en/motherboard/motherboard_detail.php@pMODEL_NAME=KN9+Ultra&fMTYPE=Socket%20AM2
PSU:
I am not so sure if this one would be enough
this 1100W max 1320W?
http://www.coolermaster-usa.com/product.php?product_id=2753
or should I buy this one:
COOLERMASTER RS-C50 1500W max 3SLI
price difference is quite large fwiw so I really need to know which should I buy to run 4 x 7970.
RAM:
4GB ddr2
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