Good PSU’s for folding rigs

This post is about 1 PSU configurations. This is easiest way (not cheapest) to start folding with 4 cards, You don’t need to fing rare 2 PSU case.

If You have challange to fold on 4 modern graphics cards, like NVIDIA GTX 295, You might find lack of suitable power supplies. First, there is not enough 6-pin and 6+2-pin PCI-E connectors. Secondly, they don’t deliver enough current — one GTX 295 draws 24-25 Amperes. Each card has 1 6-pin and one 8-pin (6+2-pin) connectors. I have been researching PSU-s for 4 card scenarios and here are my suggestions:

Manufacturers and models suitable for 4 tough cards:

Thermaltake ToughPower 1500W: 4 x 6-pin + 4 x 8-pin P, 12V rails total 120 Amp’s

Cooler Master Real Power Pro 1250W: 6 x 6-pin + 3 x 8-pin, You have to combine two 6-pin to one 8-pin, 12V rail total power 128 Amp’s;

Enermax Revolution 1250 EGT: 8 x 6+2-pin PCI-E, 6 rails a’ 30 Amp.

Known PSU makers, not having enough:

Corsair — only 1000W model with 6 x 8-pin PCI-E configuration

Antec – only 1000W model with 2 card support

ePower – has 2000W PSU, but limited only to 2-3 card, having only 2 x 8-pin PCI-E

Ultra has X3 1600W PSU, but only 2 x 8-pin PCI-E


more after the break…



  1. I think you might look into PC Power and Cooling supplies. They have been the gold standard for a number of years. Besides rarely failing they actually will put out what they are rated at. They are rather infamous for large single rail power supplies that actually work. If you look into reviews on PSU’s you find that most testers are a bit amazed at the how well the PC Power anc Cooling supplies hold up. I don’t use anything but after replacing a few motherboards back a few years ago. Haven’t had any problems since and all my machines run 24/7

  2. Thanks for Your tip. Good PSU-s are always needed. Delivery of ordered GTX-ses is late but I hope to inform here my progress in 8 GPU folding (4 GTX 295 cards) soon



  3. I read the tests and tech specs. Yes, 1 massive 100A 12V rail is super nice! But, this PSU has only 3 x 6-pin and 3 x 8-pin PCI-E’s. Su its not ment to drive more than 3 modern high power cards. This is done with good headroom and efficiently though.


  4. fyi I think “Channel Well” makes a lot of these high power psus. I found one rebranded as “Nspire puc 1200” and it seems to have the same stats as the toughpower. It is 35% less money than the toughpower in canada.

    I also found that channel well has a new 1300W PSU that is 80plus silver (almost gold) with 93 real amps at 12V. That is the highest I’ve seen from 80plus. it is a new, efficient psu. and

    with two puc1300v-s I believe you can run 7 gtx295 on asus i7 supercomputer motherboard with water cooling. I bet this same configuration will also run any GT300 cards. with a proof of concept system you will know if you are ready for 7x gt300 🙂

  5. Thanks! I’ll take a look. One factor is presence of 6 and 8-pin PCI-E power connectors.


  6. Hey Jaakennuste a couple of more PSU’s for your list.

    1500W Xigmatek NRP-HC1501 (4x6pin and 4x8pin)
    Silverstone ST1500 1500W (4x6pin and 4x8pin)

  7. thanks!

  8. You made some decent points there. I looked on the web for the issue and located most individuals will go along with with your website.

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