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  1. #1
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    Well this isnt a suprise

    I bought a new PSU Corsair HX620W to power my new 8800GTX. But now i want another 8800GTX but don't want to buy another new PSU.

    Do you think a Corsair HX620W would handle 2 x 8800GTX in Sli?
    Gaming Rig
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  2. #2
    Member Dawgdoc's Avatar
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    I LOVE Corsair PSUs. I have and love the HX620.

    But that being said, no it wont

    Firstly, it only has 2 X 6pin PCIe cables. You need 2 per card. Yes you can get a molex to PCIe adaptor, but the simple fact that you are only given 2 as the max option from Corsair tells me something

    Also, it depends on how much you are going to OC your CPU, what CPU you currently have, how much you are going to OC your GPUs, and how many extras you have added into the system (how many hard drives, fans, etc...). If you have 1 HD its a maybe (?) but if you are running a 4 drive RAID or something its a definite no go.

    Try using the Corsair PSU estimating guide HERE

    When I ran the configurator with C2Q, 2 X 8800 GTX, OC cpu, OC gpu, and 2 hard drives it said 750W corsair PSU FWIW....

    Good luck!
    Ross: "Never miss an opportunity to beat on someone else's hardware using their LN2"

  3. #3
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    Intel Core 2 Duo CPU OC'ed to 3.2Ghz
    Not going to OC GPU
    3 x Fans
    1 Serial ATA HDD
    1 PATA HDD

    Hard Drives are not in RAID configuration.

    So you reckon mine would run it?
    Gaming Rig
    | E6600 @ 3.21Ghz | eVGA 680i-SLi | 2 ASUS 8800GTX SLi | 2 x WD 250GB RAID 0 | 4GB Corsair - TWINXMS 800Mhz |

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  4. #4
    Member Dawgdoc's Avatar
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    Quote Originally Posted by tunnel View Post
    Intel Core 2 Duo CPU OC'ed to 3.2Ghz
    Not going to OC GPU
    3 x Fans
    1 Serial ATA HDD
    1 PATA HDD

    Hard Drives are not in RAID configuration.

    So you reckon mine would run it?
    Nope.

    Check the configurator but I really dont think so.

    I think that the 2 X 8800 GTXs alone will overwhelm that PSU as much as I love it....

    Just my opinion though.
    Ross: "Never miss an opportunity to beat on someone else's hardware using their LN2"

  5. #5
    Member ratbuddy's Avatar
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    It'll work just fine. Even a 520 would be enough. People have a tendency to suggest way bigger PSUs than are needed. Go to extreme.outervision.com and use the power supply calculator. Plug in your system info, and it'll tell you the power you need. IIRC, a quad core with 2 GTX's and a bunch of drives and fans draws something like 386 watts 100% loaded.
    HTPC - 2500k - 212+ - GA-Z68MX-UD2H-B3 - 2x4GB G.Skill DDR3-1600 - Crucial MX100 512GB, Spinpoint F3 1TB w/M4 64GB ISRT Cache
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  6. #6
    Member meionm's Avatar
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    SELL GTX BUY GT OR GTS
    Dell XPS 1330 T8300, 4GB PC6400, LED Monitor, DVD Burner, Intel 4965 wireless, Bluetooth 360, 9cell battery, Windows Vista Ultimate, Remote

    Q9550, Gigabyte ex38 ds4, 4GB Corsair Dominator PC8500, evga 8800gt, Corsiar 520w psu, WD 640GB HD, LG Eide Dvd Burner, Antec P182

    HEATWARE

  7. #7
    Member rpwinters's Avatar
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    Your best bet is to check over in the "Case and Power Supply" section. There are smoe very knowledgeable people there (Oklahomawolf and Johnnyguru)
    #1: X2 6400+ BE, Gigabyte GA-M61P-S3, 4 GB Corsair TWINX-6400C5, Ultima-90 W/ 92mm Panaflo M-1A, XfX 8800 GTS 512, HT Omega Striker 7.1, Corsair 620HX, CM-690, Dell 2209WA

    #2: XP-M 2400 45W (12X200 @ 1.85V), Shuttle AN35N-Ultra, 2 Gb PQI Turbo, SI-97A W/ 92mm Delta Tri-Blade LS, XfX 6800GT AGP, Creative Audigy2 Value, Fortron 530W, Antec Super Lanboy,Samsung 226BW

    HEAT

  8. #8
    Member billb's Avatar
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    From: http://www.jonnyguru.com//forums/showthread.php?t=3137

    8800 GTS 640MB x 2 SLI bridge on build 2
    Total: 656W DC.
    Total +12V2: 13.7A
    Total +12V1: 33.4A


    8800 GTX 768MB x 2 SLI bridge on build 1
    Total: 527W DC.
    Total +12V2: 7.2A
    Total +12V1: 30.2A


    8800 GTX 768MB x 2 SLI bridge on build 2
    Total: 715W DC.
    Total +12V2: 14.3A
    Total +12V1: 41.1A
    AMD FX6300, ASUS M5A99X EVO R2.0, Samsung 840 Pro, Seagate 1 TB, Asus GTS450, Samsung N915 (two), PCP&C 1kw

  9. #9
    Member Shiggity's Avatar
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    Quote Originally Posted by ratbuddy View Post
    It'll work just fine. Even a 520 would be enough. People have a tendency to suggest way bigger PSUs than are needed. Go to extreme.outervision.com and use the power supply calculator. Plug in your system info, and it'll tell you the power you need. IIRC, a quad core with 2 GTX's and a bunch of drives and fans draws something like 386 watts 100% loaded.
    That's assuming no efficiency loss which is guarenteed on any PSU and it doesn't give you much overhead.

    Better to be safe than sorry.
    CPU - E6750 @ 3.4GHz | 425x8 | 1.41V | Zalman CNPS9500 | Lapped
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    GPU - PNY 8800GT | 700c, 1850s, 900m | HR-03GT
    HD - 150GB raptor ADFD | Seagate 7200.7 160GB | 2x WD 640GB
    PSU - OCZ GameXSteam 700W


  10. #10
    Member ratbuddy's Avatar
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    Build 1 is an Intel quad. Build 2 is a pair of FX-72's and doesn't apply to his situation. 527 watts. The HX620 would have around 100 watts headroom (at LEAST) in that system. It'll be fine.
    HTPC - 2500k - 212+ - GA-Z68MX-UD2H-B3 - 2x4GB G.Skill DDR3-1600 - Crucial MX100 512GB, Spinpoint F3 1TB w/M4 64GB ISRT Cache
    Gigabyte GTX 460 1GB - Silverstone LC10B-E - Corsair RM550

    -----
    Main - X3 450 - ASRock A790GMH/128M 790GX - 2x2GB G.Skill 4-4-4-12 - Crucial MX100 256GB, 2xWD Green 1TB
    Gigabyte GTX 460 1GB - Silverstone TJ08 - Corsair CX400W

    Nothin' up my sleeve..

  11. #11
    Benching Senior on Siesta
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    I run 2 x 3870X2's with my HX620 with 7 x 120 mm fans, 3 HDD, waterpump etc without any problems

  12. #12
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    Quote Originally Posted by Brolloks View Post
    I run 2 x 3870X2's with my HX620 with 7 x 120 mm fans, 3 HDD, waterpump etc without any problems
    I hope your right bud. My second 8800GTX comes tomorrow.
    Gaming Rig
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  13. #13
    Member Dawgdoc's Avatar
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    Quote Originally Posted by tunnel View Post
    I hope your right bud. My second 8800GTX comes tomorrow.
    Im sure he is right since this isnt speculative information and its a rig that he is currently running.

    Plus he sent me some 3M TIM tape, so in my mind he cant ever be wrong now!

    Ross: "Never miss an opportunity to beat on someone else's hardware using their LN2"

  14. #14
    Benching Senior on Siesta
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    Quote Originally Posted by Dawgdoc View Post
    Im sure he is right since this isnt speculative information and its a rig that he is currently running.

    Plus he sent me some 3M TIM tape, so in my mind he cant ever be wrong now!

    Thanks for the vote of confidence man

    Quote Originally Posted by tunnel View Post
    I hope your right bud. My second 8800GTX comes tomorrow.
    Unless you get a GTX for $250 or less...why on earth would you buy another with the GTS/GT 512 out there?

  15. #15
    Member Dawgdoc's Avatar
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    Quote Originally Posted by Brolloks View Post
    Unless you get a GTX for $250 or less...why on earth would you buy another with the GTS/GT 512 out there?
    I couldnt agree more but hey.....dif strokes for dif folks.

    I guess he allready had the 1st GTX and really really really wanted to get an SLI setup. Although I personally would have sold the first GTX since they are still holding value SOMEWHAT acceptably, and then bought 2X GTS 512s or wait for the new 9800 GTX which should be released pretty soon too.
    Ross: "Never miss an opportunity to beat on someone else's hardware using their LN2"

  16. #16
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    Quote Originally Posted by Brolloks View Post
    Thanks for the vote of confidence man



    Unless you get a GTX for $250 or less...why on earth would you buy another with the GTS/GT 512 out there?
    2 x 8800GTX in SLi Vs 2 x 8800GTS in SLi.

    Hmmm i think i know which one id rather have if i could afford both options.
    Gaming Rig
    | E6600 @ 3.21Ghz | eVGA 680i-SLi | 2 ASUS 8800GTX SLi | 2 x WD 250GB RAID 0 | 4GB Corsair - TWINXMS 800Mhz |

    Media Server
    | D-Link DNS 323 | 2 x WD 1TB RAID 1 |

  17. #17
    ChinStrap's Avatar
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    Quote Originally Posted by tunnel View Post
    2 x 8800GTX in SLi Vs 2 x 8800GTS in SLi.

    Hmmm i think i know which one id rather have if i could afford both options.
    IMO

    8800GTX SLi > 8800GTS SLI (640mb)
    8800GTS SLI (512mb) > 8800GTX SLI

    the only reason i say this, is overclocking potential. *most* GTX SLi maxes out on the core side around 650MHz on air. while the g92 chips can run a much faster core frequency on AIR cooling. my g92 GTS SLi can run 24/7 @ 800core/1150mem. and i can bench it all the way up to 826MHz core - NO GTX can run 800 core w/o a vmod.
    Working on a re-build.

    ** A few of us Benchmark. You Should join us **

  18. #18
    Member TheCheat's Avatar
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    Okay, just a quick question to the OP:

    What monitor are you running this SLI setup on?
    Corsair 600T - i5 2500 - Asus Maximus V Gene - 8GB Ram - EVGA 560 Ti 448cores - 240GB Mushkin SSD - 1 TB WD HD - Seasonic X750 GOLD - Blu-ray - Dell 2407FPW + Dell U2412M
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  19. #19
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    A 620W Corsair can handle that setup (and a bit more) without a problem.

    http://www.jonnyguru.com/modules.php...=Story&reid=21

    High-wattage PSU's have very little practical application.
    Not very active these days. PMs are the best way to reach me.

    heatware


  20. #20
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    Quote Originally Posted by TheCheat View Post
    Okay, just a quick question to the OP:

    What monitor are you running this SLI setup on?

    Depends really. When i can be bothered i will run it on me 28 inch HDTV.

    If not that then on my 19 inch.
    Gaming Rig
    | E6600 @ 3.21Ghz | eVGA 680i-SLi | 2 ASUS 8800GTX SLi | 2 x WD 250GB RAID 0 | 4GB Corsair - TWINXMS 800Mhz |

    Media Server
    | D-Link DNS 323 | 2 x WD 1TB RAID 1 |

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