aruba92 Posted March 14, 2010 Posted March 14, 2010 I currently have 2 XFX radeon 5770 in CrossfireX. I am thinking about adding a 3rd card, but my motherboard only supports PCI-E x4 on the 3rd slot. Would it be a waste of money or would I still see some substantial improvement with the 3rd card only running on a PCI-E x4 slot? I would lose my sound card in the process also, but I would just use the onboard sound I suppose. Otherewise I would have to spend the money on a new mobo. Share this post Link to post Share on other sites More sharing options...
xPETEZx Posted March 14, 2010 Posted March 14, 2010 Waste of money. The 2 cards you already have was a terrible idea. You should have got 1x 5850 or 5870. Running weak cards in Crossfire is really poor. Adding a 3rd card wont help at all. Most games barely benifit from Crossfire, let alone tri-fire. Your sound card is doing more good than a 3rd card would. Personnally, if the 2 cards you have arent good enough, sell them and get a 5870. Stop wasting time with low level cards. Share this post Link to post Share on other sites More sharing options...
joel.monteiro Posted March 14, 2010 Posted March 14, 2010 2x5770 is better than a 5850 but some games dont support crossfire scaling like GTA 4,i would not put a another card in tri fire in the x4 slot,if u want more performance just sell of the two cards and buy a 5870 u will get more performance and u can go crossfire with one more later. Share this post Link to post Share on other sites More sharing options...
aruba92 Posted March 14, 2010 Posted March 14, 2010 I am happy with these cards vs. price ($169). A 5870 we are talking over $400. No way. I just thought of asking about the 3rd PCI-E slot. My FPS in Crysis with these cards blows away the single GTX 275 I had, so like I said I am not having issues just thought about adding more. I tried 2 Nvidia GTX 275's, but they seem to be having some driver issues. I don't know if that ahs been resolved, but I know it was all over there forum and also the entire web. BSOD. Share this post Link to post Share on other sites More sharing options...
Puck Posted March 14, 2010 Posted March 14, 2010 Waste of money. The 2 cards you already have was a terrible idea. You should have got 1x 5850 or 5870. Running weak cards in Crossfire is really poor. Adding a 3rd card wont help at all. Most games barely benifit from Crossfire, let alone tri-fire. Your sound card is doing more good than a 3rd card would. Personnally, if the 2 cards you have arent good enough, sell them and get a 5870. Stop wasting time with low level cards. This is incorrect, its not 2003 anymore. Crossfire scaling has improved dramatically. Dual 5770s perform on par with a single 5870, and tons of reviews praised that combo for its great price:performance...they cost less then one 5870 and are easier to find. In the OP's case though, with his motherboard limitations, I would either stick with what he has now if he is gaming at mid-low resolutions, or sell them both and get a single 5870 if he is running at 1080p. Then, he can get a second one down the road and push the eye candy even more if he wants. Share this post Link to post Share on other sites More sharing options...
aruba92 Posted March 14, 2010 Posted March 14, 2010 I am running at 1920 * 1080 1080P. Crysis on very high settings and no problems here. I am very happy with these cards vs. price. They don't draw as much power as a nvidia card and they also OC very nicely. FPS in Crysis averages around 80 FPS Directx 10 with my rig. I only asked again about the 3rd slot just for curiousity. Share this post Link to post Share on other sites More sharing options...
tkrow21 Posted March 15, 2010 Posted March 15, 2010 I am running at 1920 * 1080 1080P. Crysis on very high settings and no problems here. I am very happy with these cards vs. price. They don't draw as much power as a nvidia card and they also OC very nicely. FPS in Crysis averages around 80 FPS Directx 10 with my rig. I only asked again about the 3rd slot just for curiousity. Those are some nice frames you are getting for 1080p. Is it PCI-E 2.0 or PCI-E? Share this post Link to post Share on other sites More sharing options...
Avinexis Posted March 15, 2010 Posted March 15, 2010 I am running at 1920 * 1080 1080P. Crysis on very high settings and no problems here. I am very happy with these cards vs. price. They don't draw as much power as a nvidia card and they also OC very nicely. FPS in Crysis averages around 80 FPS Directx 10 with my rig. I only asked again about the 3rd slot just for curiousity. Holy cow! My 5850's only getting around 30 at those settings Share this post Link to post Share on other sites More sharing options...
IVIYTH0S Posted March 15, 2010 Posted March 15, 2010 Holy cow! My 5850's only getting around 30 at those settings I suspect that we're not getting the whole truth from him and to xpetezx...no....because no... I know it sucks that you forked out too much money for a video card but the fact is that those two "low level" video cards would produce alot more performance than yours and still be cheaper! Share this post Link to post Share on other sites More sharing options...
tkrow21 Posted March 16, 2010 Posted March 16, 2010 Maybe no AF / AA? Share this post Link to post Share on other sites More sharing options...
potatochobit Posted March 16, 2010 Posted March 16, 2010 Dual 5770s perform on par with a single 5870 I think not. maybe at 400x300 resolution playing pacman post a link to the numbers. Share this post Link to post Share on other sites More sharing options...
bp9801 Posted March 16, 2010 Posted March 16, 2010 Its Crysis Warhead in DX10 mode, 1920x1200 res, and 2x AA. You get about 38-40 frames with the 5770 Crossfire and ~45 frames with a 5870. So, its comparable and you wouldn't notice the difference that much imo. Its from another site, but I knew I saw it somewhere else. Share this post Link to post Share on other sites More sharing options...
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