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5770 crossfire, vs single 5850/5870

Last response: in Graphics & Displays
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April 2, 2010 4:16:29 AM

Basically as title says...

Building my first computer, used for high settings gaming (basically any game MAXED out, highish resolution, and crysis smooth and looking good good too), and noob at the same time. so im looking at:

1 (with future, if needed, 2 crossfired) GIGABYTE GV-R577UD-1GD Radeon HD 5770 $170/$340
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

1 SAPPHIRE 100282-3SR Radeon HD 5850 $300
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

1 SAPPHIRE 100281-3SR Radeon HD 5870 $400
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
-or-
1 SAPPHIRE Vapor-X 100281VX-2SR Radeon HD 5870 $440
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

im kinda tight on cash, and need best for the money, so realistically going from first to last on the list.
my friend has a single 5770, and can max basically any game (cept for crysis) and good resolution.
and would it be better for 2 5770s, or same priceish 1 5850. does crossfire really make that much of a difference, as long as not on HUGE resolution.
lastly... if im crossfiring, do i need 2 pci-expresses running at 16x, or two at 8x make much a difference.
tightish on cash,

Thanks
a b U Graphics card
April 2, 2010 4:29:19 AM

Well in most case crossfired 5770 will beat out a 5850 or even a 5870, but with that there is also the disadvantage, of alot more heat, a bit more power draw, and of course lack of expandability, as the most you could go is x3 unless you have a crazy 4pci-e mobo. Also game that don't support crossfire ( which are very few at this point) will only be able to run as fast as one 5770 will take it.

As for 8x and 16x, you might see a slowdown in 8x but it'll only be a small one
April 2, 2010 4:33:01 AM

so basically being that most games dont support it, itd be better off going with the 5870 then? right? then i could always get a 2nd, WAAAAAAYYYYY down the road with price drops...
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April 2, 2010 5:08:03 AM

jonnyshatter said:
so basically being that most games dont support it, itd be better off going with the 5870 then? right? then i could always get a 2nd, WAAAAAAYYYYY down the road with price drops...


No.. most newer games do support crossfire.
April 2, 2010 5:11:46 AM

I went the (2) 5770 in crossfire route. I'm still not sure if I made the right decision or not. Heat is an issue for me but some don't have any issue. However, 25k in 3DMark06 aint too shabby.
April 2, 2010 5:12:52 AM

i know they support it. but with two 5770s id be maxed out, so when i upgrade they'd be basically worthless. so wouldnt it be better with one 5850, and when i upgrade, get a second one? makes sense, right?
April 2, 2010 5:49:19 AM

You could always add another 5770 =) Seriously though, I too would rather have 2 5850s but the amount of heat produced and power needed (which isn't that much actually) might require a complete overhaul of your system. It all depends if your system is capable of just slapping in another 5850...you might just have to buy another psu along with the additional video card.
a b U Graphics card
April 2, 2010 6:30:04 AM

jonnyshatter said:
so basically being that most games dont support it, itd be better off going with the 5870 then? right? then i could always get a 2nd, WAAAAAAYYYYY down the road with price drops...


i worded that kinda weird, but i meant that most all but a few game support crossfire
a c 231 U Graphics card
April 2, 2010 6:19:29 PM

This is a tough conversation to have w/o resolution. If at 1920 x 1200, I'd get the 5850 (or 470) now....and add a 2nd one later
!