Best graphics card for a noname PSU 450Watt?

Which is the best and fastest card that I can put in my PC with:

Intel Celeron G1630
Asus H61M-F
4GB Samsung DDR3
WD 1TB Black
450Watt Lamtech PSU

My screen has a resolution of 1440x900 and I am not going to change it!I want the best card which will work without problems!

PS1.I'm not going to OC the card
PS2.I was thinking about a 6790.Is that good for gaming?
5 answers Last reply
More about graphics card noname psu 450watt
  1. If this is your PSU: https://www.facebook.com/237086263080655/photos/a.264217077034240.60931.237086263080655/264217170367564/?type=1&relevant_count=2
    ...it appears to have a small 15A (+12V) rail. Not exactly a 'real' 450W PSU. That's more in the 250W category. So you will be limited to something very mild unless you upgrade to a better PSU.
    Even the HD 6790 is too much for that PSU. I would not go more than a R7-240 with that PSU. If that is not your PSU, please look on the nameplate and read the +12V rating.
  2. Yeah this is my PSU.But I think that R7 240 is too low for gaming!What about 6850??
  3. TechBossGR said:
    Yeah this is my PSU.But I think that R7 240 is too low for gaming!What about 6850??


    What about a better PSU?
  4. clutchc said:
    TechBossGR said:
    Yeah this is my PSU.But I think that R7 240 is too low for gaming!What about 6850??


    What about a better PSU?

    Unfortunately I have money only for card.Not for PSU!
  5. TechBossGR said:
    clutchc said:
    TechBossGR said:
    Yeah this is my PSU.But I think that R7 240 is too low for gaming!What about 6850??


    What about a better PSU?

    Unfortunately I have money only for card.Not for PSU!


    Then the 127W HD 6850 is out of the question. http://www.hwcompare.com/5891/radeon-hd-6850/
    Your original thought of the HD 6790 was too much card for the PSU at 150W: http://www.hwcompare.com/9962/radeon-hd-6790/

    You're not going to find a card that you'll be happy with as long as you have that weak PSU. By weak, I mean the all-important +12V rail. That's where manufacturers of cheap PSUs cut back so they can call their PSUs "450W" and get away with it.

    Something like the R7-240 will still game fine at 1440x900 with reduced settings. Check out some videos: https://www.youtube.com/watch?v=JkfFWhuecr8
    But that's about the best I can recommend until you upgrade the PSU.
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