Just put together a new computer to use mainly for gaming and replaced everything except the graphics and case, i usually play all the latest games (black ops, gta Iv etc) and like to use high settings, resolution i use mostly is usually 1680x1050 on a 22" Widescreen LCD.
What i want to know is.
Is it worth me upgrading my HD 4770? If yes,
Whats a good card for me?
Is it worth getting another HD4770 for crossfire?
Will my PSU run two of them?
I only have around £150 for a new card, my current computer specs are as follows
. . . you should notice the difference. Plus, you get DX11 support, if you see that as a plus
I wouldn't recommend 2x4770 because you are investing in old technology (though you're saving money). I'm also concerned that crossfire may not improve minimum frame rates in some instances, while the single, faster cards will. Finally, why go through the heat, power, complexity, driver dependency of xfire when you needn't.
My HD4770 runs fine at the moment, Black ops stutters for the 1st 5 seconds of a level then it runs fine, GTA IV runs fine for the most part (runs a little slow when there are alot of cars and pedestrians on screen at same time), same happens whith most other games, they are fine until the screen gets a little busy then they slow a little.
The main reason i want to upgrade is that once i sell my old components that i upgraded and if i sell my 4770 i will have around £210, i want a new case (Antec 600 is £60), which leaves me with £150. Im not going to be upgrading for quite a while now so thought maybe i should get a new card while im able to.
Your motherboard is crossfire, something to keep in mind for future upgrades (seeing as how your processor will be lasting you some time). In the future you might want to give your 5850 a new friend ;-) (Gtx 460 wouldn't give you that option)
Also, keep your power supply in mind here, power requirements:
5850 • 500 Watt or greater power supply with two 75W 6-pin PCI Express® power connectors recommended (600 Watt and four 6-pin connectors for ATI CrossFireX™ technology in • dual mode)
The 460 is about the same (will actually use about 30 watts more under load).
You have a decent case, looks to have enough room. Some cable managment and some high quality fans can really bring any case up to a respectable margin.
Just to make sure we're clear . . . the suggestion was 6850 or 460. The 5850 is a slightly more powerful card than either of them.
If the 6850 is not available at 460 prices or lower, get the 460 . . . and the case if you want lol . . . or go on a date. At 1680 the 460 is already overkill, and you have no need for crossfire in your future.