XfX radeon 6670 1gb Gddr3 or 5670 512mb Gddr5 - which is better ?

Hey guys ,
I have a little doubt here . I was looking for a radeon 6670 HD wit 1gb GDDR3 and I can't go with the GDDR5 because it is costly . Then I read somewhere on the Internet that the Radeon 5670 HD 512 mb GDDR5 out performs that 6670 1gb with GDDR3 memory .

Which graphics card should I buy ? Radeon 6670 HD 1 GB GDDR3 or Radeon 5670 HD 512 mb GDDR5 ?
Please help me .

Please note that my PSU is a 500 W one .
And my monitor resolution is 1280x720 .

Please reply as soon as possible .
3 answers Last reply
More about radeon 6670 gddr3 5670 512mb gddr5
  1. if youre only getting one card and not CrossFiring it, then 500W PSU should be more than fine.

    DDR5 is better than DDR3. i can tell you that.
    also, dont be suprised to see older models are still out performing newer models.
    theres a reason why those newer models are on the cheaper side.

    having good GRAM is important for your computer and how much graphic performance it can handle at once.

    if the 5670 @ 512mb GDDR5 out performs the 6670HD, then i honestly wouldnt be surprised... you should keep researching and get more knowledge of it :)
  2. It's got to be a good PSU. If it's a bad brand, the listed wattage is meaningless. Tom's did a test a while back in which they purchased three super-cheap PSUs. Two failed at hundreds of watts under their rated wattages, and the third actually exploded.
    What's the model?
  3. sravans578 said:
    Then I read somewhere on the Internet that the Radeon 5670 HD 512 mb GDDR5 out performs that 6670 1gb with GDDR3 memory .

    Wherever you read it, it's untrue. The HD6670 is much faster than a HD5670 with whatever type of memory.

    Also, a cheapo 250W PSU can run a HD6670 just fine. Even if your PSU were to output half of it's specified wattage, you would be fine.
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