750W or 850W PSU?

By Teh Snowman
May 8, 2011
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  1. Hi everyone.

    I'm planning on building my first setup once summer starts. Here's the setup I want to go with:

    COOLER MASTER HAF 922 RC-922M-KKN1-GP Black Steel + Plastic and Mesh Bezel ATX Mid Tower Computer Case

    ASUS P8P67 DELUXE (REV 3.0) LGA 1155 Intel P67 SATA 6Gb/s USB 3.0 ATX Intel Motherboard

    EVGA SuperClocked 01G-P3-1563-AR GeForce GTX 560 Ti (Fermi) 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support

    Intel Core i7-2600K Sandy Bridge 3.4GHz (3.8GHz Turbo Boost) LGA 1155 95W Quad-Core Desktop Processor BX80623I72600K

    Crucial RealSSD C300 CTFDDAC064MAG-1G1 2.5" 64GB SATA III MLC Internal Solid State Drive (SSD)

    G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-8GBXL

    Western Digital Caviar Black WD5002AALX 500GB 7200 RPM SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive

    ASUS DRW-24B1ST/BLK/B/AS Black SATA 24X DVD Burner - Bulk - OEM

    COOLER MASTER Hyper 212 Plus RR-B10-212P-G1 "Heatpipe Direct Contact" Long Life Sleeve 120mm CPU Cooler Compatible Intel
    _________________________________________________________________

    Here's the two PSUs I'm looking at:

    CORSAIR Enthusiast Series CMPSU-850TX 850W ATX12V v2.2 / EPS12V v2.91 SLI Certified CrossFire Ready 80 PLUS Certified Active PFC Power Supply

    CORSAIR HX Series CMPSU-750HX 750W ATX12V 2.3 / EPS12V 2.91 SLI Ready CrossFire Ready 80 PLUS SILVER Certified Modular Active PFC Power Supply



    I also might want to add a second GTX 560 and put them in SLI in the future... maybe.

    So if I go with that setup, do you think a 750W PSU will be enough? or should I step it up to an 850W?

    Also if you have any other comments on my setup, please let me know.

    Thank you!
  2. hellokitty[hk]

    hellokitty[hk] I'm a TechSpot Evangelist Posts: 4,318   +117

    The cheaper one.
  3. freythman

    freythman TechSpot Enthusiast Posts: 123   +10

    What he said ^^
  4. Teh Snowman

    Teh Snowman Newcomer, in training Topic Starter Posts: 29

    Thanks for the responses,

    The thing is that both of those power supplies are the same price at $140. The only difference between them is that the 750W is modular and the 850W is not modular. I want to go with the 750W if I can because I would like it to be modular, otherwise if I need it I'll go with the non-modular 850W.

    Corsair CMPSU-850TX 850W
    Corsair CMPSU-750HX 750W

    Thank you.
  5. red1776

    red1776 Omnipotent Ruler of the Universe Posts: 5,867   +74

    The HX series is the better build quality, and 750w is more than enough for the build you have listed.
    even if you add a 2nd 560 for SLI.
  6. Teh Snowman

    Teh Snowman Newcomer, in training Topic Starter Posts: 29

    That's what I wanted to hear. Thanks a lot :)
  7. hellokitty[hk]

    hellokitty[hk] I'm a TechSpot Evangelist Posts: 4,318   +117

    I would definitely use the HX if they're the same price.
  8. Teh Snowman

    Teh Snowman Newcomer, in training Topic Starter Posts: 29

    Thanks, I've decided to go with the HX for sure now. Can't wait to build this, I'm so excited :D
  9. Rage_3K_Moiz

    Rage_3K_Moiz Sith Lord Posts: 7,280   +23

    A couple suggestions, if I may:
    • I'd recommend this PSU instead; higher efficiency, modular, and cheaper to boot, compared to either of those Corsair PSUs.
    • Two dollars more would get you this HDD. As fast (if not faster), as well as double the capacity compared to the Caviar Black.
    • This SSD is the better buy. If you can stretch your budget to accomodate it, this would be best. The rebate's added incentive too. ;)
    • $5 more will get you this RAM kit and a $20 rebate. Lower latency than the G.SKILL kit too.
    • This video card is a better, lower-priced choice, especially with the $30 rebate and free shipping.
    • I would highly recommend this motherboard over that ASUS one; the latter is simply overpriced and has unnecessary features. This one provides 2-way SLI and enough SATA and USB ports (along with other ports and features), and overclocking performance should be pretty decent. Unless you want the best possible overclock, avoid the more expensive boards.
    Hope that helped. :)
  10. Teh Snowman

    Teh Snowman Newcomer, in training Topic Starter Posts: 29

    Thanks for the recommendations Rage, this definitely helps me out. I'm especially liking the price of that motherboard, which adds a little extra space for other upgrades too :)

    Thanks again!


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