Geforce gtx 650 SLi or radeon HD 6770 crossfire

[kheetah717]

As the title suggests, which setup would have better performance? Don't say go and sell them to get something else, I'm not interested in that. I want to know out of these two setups.

 

[Mark RM]

performance is a coin toss so I'm going to have to give it to Nvidia because I believe SLI support for games is generally a bit better than Crossfire and in games where SLI is not supported you have a dedicated Physx card if that's important to you.

 

[kheetah717]

I was leaning towards that too, but I also thought about running SLi and putting my old 8800GT on physx duty as well (my mobo has 4 PCIe slots)

 

[bignastyid]

The GTX 650 doesn't support SLI.

 

[Mark RM]

The GTX 650 doesn't support SLI.

LOL true... forgot about that, I only had a Ti which does.

 

[photonboy]

AMD has limited support before the HD7000 cards (for W7, 8 and 10).

This is your choice:
http://support.amd.com/en-us/download/desktop/legacy?product=legacy3&os=Windows+10+-+64

(if you look closely this is ALL of the HD6000 cards, but they do support the HD7700 and later cards still if you don't count the rebadged OEM 8000 cards.)

*CRIMSON supposedly fixes some frame pacing issues to make Crossfire smoother, but with it not being supported I'm not sure if you'll have issues or not. I guess just try it and see.

 

[kheetah717]

Guess I will be doing crossfire

 

[kheetah717]

I already have one HD6770 and found a cheap one for $45, so if crossfire doesn't pan out like I hope I'm not really out of anything and will just use the GTX 650 by itself. Does anyone know what kind of performance I can expect from the HD6770s assuming crossfire works and what about the GTX 650 by itself?

 

[Mark RM]

Those two cards are pretty much dead even as a standalone solution, the 6770's in crossfire were little beasts in their day. that's 1600 VLIW 5 combined so when it clicks you are pushing the same as a GTX 570 or 6950... in raw terms a 6970... in modern terms, that's a GTX 950 give or take a few percent in DX 11

 

[kheetah717]

So in other words those two little HD6770s combined would be putting out some satisfying horsepower so to speak? Sorry for all the questions I haven't built a computer in a long time and my last one was using an nvidia geforce 8800GT, so that should tell you it's been a while. If it's any help, I have two motherboards on hand to choose from in this build, a Gigabyte GA-990FXA-UD3 and an Asus ROG Crosshair III Formula. Both support crossfire, but what might be interesting and what I might do if it's worth it and can be done on the Gigabyte board is run a 3 way crossfire setup with 3 HD6770s. The Gigabyte board has 4 PCIe slots.

 

[Epicness937]

So in other words those two little HD6770s combined would be putting out some satisfying horsepower so to speak? Sorry for all the questions I haven't built a computer in a long time and my last one was using an nvidia geforce 8800GT, so that should tell you it's been a while. If it's any help, I have two motherboards on hand to choose from in this build, a Gigabyte GA-990FXA-UD3 and an Asus ROG Crosshair III Formula. Both support crossfire, but what might be interesting and what I might do if it's worth it and can be done on the Gigabyte board is run a 3 way crossfire setup with 3 HD6770s. The Gigabyte board has 4 PCIe slots.

can you find a used hd 6850 7770 7790 or 7850 r9 270 gtx 660 670 760 or 770? all those are cheap used options.
as for 650 vs 6770 the 650 does not support sli as far as i know
but even though you did say not to say this given you can get a 6770 for 45 and you have that you should sell teh 6770 you have for 45-50 and get one of the used cards i said