Is this too big of a power supply

I am going to build a system with sli in mind for the future. So the power supply that I will get now is overkill. Is this ok? The build is
Thermaltake Armor Series VA8003BWS Black Full Tower Case w/ 25CM Fan - Retail
Model #:VA8003BWS

EVGA E758-A1 3-Way SLI (x16/x16/x8) LGA 1366 Intel X58 ATX Intel Motherboard - Retail
Model #:132-BL-E758-A1

EVGA 896-P3-1255-AR GeForce GTX 260 Core 216 896MB 448-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card - Retail
Model #:896-P3-1255-AR

CORSAIR CMPSU-750TX 750W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS Certified Active PFC Compatible with Core i7 Power ... - Retail
Model #:CMPSU-750TX

Intel Core i7 920 Nehalem 2.66GHz LGA 1366 130W Quad-Core Processor Model BX80601920 - Retail
Model #:BX80601920

CORSAIR XMS3 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Triple Channel Kit Desktop Memory Model TR3X6G1600C9 - Retail
Model #:TR3X6G1600C9

x2 Western Digital Caviar SE16 WD5000AAKS 500GB 7200 RPM SATA 3.0Gb/s 3.5" Hard Drive - OEM
Model #:WD5000AAK

Western Digital Caviar SE WD800AAJS 80GB 7200 RPM SATA 3.0Gb/s 3.5" Hard Drive - OEM
Model #:WD800AAJS

So in the future(far away future) I plan to have two 260 gtxs. Is it ok to have a power supply that produces more power than needed. If not I will just stick with a CORSAIR CMPSU-650TX 650W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS Certified Active PFC Compatible with Core i7 ... - Retail
Model #:CMPSU-650TX
and forget about sli.
Thanks for any advice.
4 answers Last reply
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  1. The PSU is just fine. It will only consume the power it needs, and is just right for SLI GTX 260.
  2. Welllll look at it this way ,,if you can install 1 video card that can give you 60fps no matter what is happening on screen what do you need two cards for,as for the psu if you can afford the cost and the hydro well it is your choice,although ,,one should always try to get the "mostest for the leastest",,at the least your psu will not be working too hard..:)
  3. Let me answer your question first and then throw my two cents.

    Okay the 750w psu will handle another gtx 260 so you can run two cards but for sure it wont handle three cards. For three cards you will need 1000w power supply.

    Now your saying in far away future....far away in future lets say in 6 months when you will want to get another or lets say two more 260gtx cards there will be new series of cards that will give you performance of two 260's in one package. Is it really worth getting single card now and buying 'old' 260 in 6 months when there will be better offerings out there? Skimp out on a power supply, get a 650wats that will be enough for your system and for the money saved get a nice cooler for your processor and overclock! ;)
  4. yeah it's good enough. it'll give you more room for upgrade:D
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