Best GPU for a 400W PSU System (Med-High Gaming)

CPU: AMD Athlon II X4 635 2.9 GHz
Motherboard: MSI 785GM-P45 AM3 Socket
GPU: Radeon HD 4200 (Integrated Graphics)
HDD: Samsung HD502HJ 500 GB 7200 rpm SATA 3.0Gb/s
RAM: 2 x OCZ 2GB DDR3-1333 (4 GB Total)
PSU: Off-Brand (Apex Brand) 400W and 20 Amps, is probably not 80 PLUS certified. Only has one free PCI-E connector open.
Image of PSU
The single PCI-E connector
The motherboard/guts

When I did it out it says, without a graphics card, the output of the system is 269W, which seems low.

I have this old computer and I am looking to upgrade it by adding a graphics card (The CPU is good enough for most games, and I don't have enough money right now to completely scrap it and build from scratch). What is the best graphics card I can get that can fit? I was looking at either the ATI Radeon 7750 1GB or the Nvidia GTX 650 Ti 1GB. Will either be bottlenecked by the CPU?

I don't want to max out any games, I just would like to be able to play them smoothly and on medium-high settings. I am interested in games like Borderlands 2, Batman Arkham Origins, Skyrim, etc.

My current laptop (which I use for gaming) is:
CPU: APU A8-3500M 1.5 GHz
GPU: Radeon HD 6750M (Dual Graphics Set-Up)
HDD: 640GB, probably 7200 rpm SATA 3Gb/s or maybe SATA 6 Gb/s
RAM: 6 GB total, DDR3-1600

So I'm looking for something better than that. Thanks for all the help!
Thanks for the help!
8 answers Last reply Best Answer
More about gpu 400w psu system med high gaming
  1. Geforce GTX 650ti - 20A and a 400W PSU minimum

    This is from MSI, If it is a complete off brand I wouldn't do it if it is antec it should be okay, they aren't top tier but are a decent brand. That cpu will hold back the gpu a bit but it should still run better than your laptop, if you don't like the perfomance upgrading to 8gb or ram will help you as well, and the gpu+ram could both go to a new future rig if you chose.
  2. Amd cards more cpu dependent than nvidia cards..
    that's mean..slow processor will hold the graphic card to extract performance, even the game is not..

    Get the 650Ti nvidia card.
  3. Best answer
    I don't think your system can handle a 650ti, a normal 650 would be recommended.
    20A on the 12V rail is low, and 225W for 3.3 + 5 and 380 for 3.3 + 5 + 12 means only 155W for ALL components of the 12V rail.
    That, for a max CPU power of 95W, will leave only 60 W for all other components.
    No way a 650Ti will be able to run on that system.
    I'd say a 7750, but even that is risking it.

    Why don't you get a cx430 from corsair, it's got more current and it is not very expensive either.
  4. Jeez, I should just get a new PSU then... I knew it was crappy when I looked at it.
  5. may not be a crappy psu per se, just not for gaming.
  6. Thanks for the help, cheers mate
  7. You're welcome.
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