New Build not sure about PSU

Im building a new PC, nd i was told that for my build a Coolmasters 450W would be sufficient, but i swapped my graphics card from a 8800GTS 320MB to a ATI Radeon HD2900 XT, here is my build.
Mobo:Intel Extreme D975XBX2KR BAD AXE 2
Mem:OCZ 2GB (2 x 1GB) PC2-8500 1066MHz Reaper HPC Edition Dual Channel DDR2
CPU:Intel Core 2 Duo E6600 "LGA775 Conroe" 2.40GHz (1066FSB)
GFX: ATI Radeon HD2900 XT 512MB
HD: Seagate Barracuda 7200.10 250GB (2X in RAID 0 config)
DVD Drive: NEC Optiarc AD-7170S-0B 18x DVD±RW/DL/RAM
PSU: Coolermaster IGreen 430W PSU OR Coolermaster eXtreme Power 650W PSU
Help me Please... ill also accept suggestions of diff PSU's
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  1. never just go with the minium psu. its always better to give yourself a little extra room. your gpu recomends 500 anyway so your 430 isint going to be enough anyway. plus, it allows you to upgrade parts later and not have to get another psu.
  2. If you don't intend to OC you're GPU, then I would recommend a SeaSonic S12 550W or 650W. If you want an 8 pin plug, pick up one of these Silverstone models:
  3. just get the CM iGreen 500W

    I like the Enermax Liberty 500W
  4. Might want to check out Johnny Guru and take a look at the PSU recommendations.

  5. Here you go.. $150 for a PC power & Cooling with 49A on a single rail with an 8 pin connector. It's $200 with $50 intant off.
  6. Out of curiosity, why are you switching GPUs? and why a 975 MB? Have you looked at the Nvidia options?

    I would agree with the last post for a Power PC and Cool 610W $150. Its one of the few parts that you can actually take with you when you rebuild or upgrade later and gives you overhead.
  7. Dude why are you going with a 975 mobo when the P35's are now available which cost about the same & perform better with the option of upgrading to ddr3 mem when prices come down.

    For a PSU i'd consider the Corsair 620 HX, I have 1 and they're very quiet and stable (also the 2900xt will take 2x6 pin pci-e power if you lack an 8pin).
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