Ati hd 5830 and hd 5770

Neither. 5830 is already clocked pretty high, and is crippled due to it's low ROP count. It performs closer to the 5770 than the 5850 in most cases and it uses more power than the 5850. As for the 5770 it's basically half a 5870. If you want something to overclock to get to the level of a 5870 then you need to either go with a 5850 or a GTX460 1GB with an aftermarket cooler. You could also just wait for the 6700 cards to come out and drive down the prices a little.
 
It depends on your expectations. An HD5770 will let you play any game at 1080p but in the more graphic intensive games you'll need to leave AA off and turn down a few of the more demanding graphic options. A GTX 460 768mb would be a better choice and costs about $170 thse days. It is approximately 20% faster than the HD5770 at stock and overclocks a very large amount(over 30%.) This would be a good choice with nice cooling;
http://www.newegg.com/Product/Product.aspx?Item=N82E16814121390
Or if you don't mind waiting to get a mail in rebate this 1gb model is a nice deal;
http://www.newegg.com/Product/Product.aspx?Item=N82E16814500163
 

8Vidia

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Non of them but 5850 . 5850 OC is higher than 5870 . dont get 5830 ( i realy dont know why but no one suggest me 5830 ) go for 5770 or 5850 . & why you wanna OC it ? its risky ( may break your VGA card ) . single 5850 surly solve all of your problems .
 

deweycd

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Short answer no, long answer yes but you will burn out the card in a matter of seconds. Do not try to OC a 5770 or 5830 to 5870 levels. A 5850 can reach a 5870 but will run a bit slower due to the loss of shaders.
 

youed

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So does that mean 2 5770s equal a 5870
 

Anks2014

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If you're running at 1680 X 1050 i'll still suggest a gtx 460 768 mb.I suggest you should really wait for the new 6XXX series coz the release is right around the corner.What's you're processor psu,etc.
 

8Vidia

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^ series doesnt have special thing , & it will takes long time to 6 series prices drop down to natrula prices , because they are new they surely gonna be EXPENSIVE too . few people can buy high END 5000 series cards . so we can talk about 6 SERIES when 5 series be cheap