X4/x4 SLI Offers > 80% performance of x16/x16 SLI Tags: Graphics Cards Performance SLI Motherboards PCI Express Graphics Last response: September 3, 2010 1:08 PM in Graphics & Displays Share Lmeow a b U Graphics card a b V Motherboard September 3, 2010 6:15:39 AM I'm kind of surprised. http://www.hardocp.com/article/2010/08/25/gtx_480_sli_p... This was released a week ago... GTX 480s in SLI x4/x4 mode show more than 80% performance overall compared to GTX 480 SLI x16/x16, and most of the time it's 90% or higher. PCI-E 2.0 x4/x4 is the same as PCI-E 1.1 x8/x8, so older motherboard users won't have much performance loss either it seems. Seems like those who intend to buy a x16/x4 PCI-E 2.0 board shouldn't be too discouraged if they want to CrossFireX or SLI for that matter (x16/x4 boards generally aren't SLI certified though). Be careful with P55 motherboards - the x4 slot is PCI-E 1.1 and offers half the bandwidth, which I would say would impact on performance. What do you guys think? More about : sli offers performance x16 x16 sli Maziar a c 169 U Graphics card a c 136 V Motherboard September 3, 2010 7:31:12 AM Thanks for the link, it seems that PCI-E 2.0 really makes a difference in CF performance,because dual x16/x8 performed much better than x16x4 with PCI-E 1.0 cards. m 0 l Lmeow a b U Graphics card a b V Motherboard September 3, 2010 8:11:43 AM Welcome Maziar. This means I can go for a GTX 470 or something high end later on this year and next year adding another in CFX or SLI should work quite well. m 0 l Related resources x8x8 z87 vs x16x16 2011 for 2 way sli PCi E 3.0 - Forum sli PCIe 3.0 x16/x16 or is x16/x8 just as good? Need help picking motherboard - Forum P8Z77-V PREMIUM, 780ti Sli setup x16,x16?? - Forum X16/x16 SLI affected by x1 X-Fi card? - Forum AM3 SLI MB ( x16/x16 ) - Forum Can't find your answer ? Ask ! Get the answer Helltech a c 153 U Graphics card September 3, 2010 8:42:07 AM Does CF still perform horribly at x4, is this just an SLI thing? I could have sworn (like Maziar said) I saw benchmarks where x4 with CF had really bad performance. m 0 l Lmeow a b U Graphics card a b V Motherboard September 3, 2010 11:06:35 AM The PCI-E x4 lanes may have been PCI-E 1.0/1.1 which would probably bottleneck the cards then. m 0 l Mousemonkey a c 272 U Graphics card a b V Motherboard September 3, 2010 1:08:42 PM The x4/x4 setup seems to affect the minimum framerates more than anything but even so that's only on "some" titles, interesting results nonetheless. m 0 l Can't find your answer ? Ask ! Publish Related resources SLI - x16/x16 or? Forum Gigabyte Z68-UD7-B3 wont run sli x16/x16 Forum SLI 580 and Z68-UD7-B3 not running x16/x16 Forum CF/SLI @x8x8 vs x16x16 Forum Help 1155 motherboard for sli running at x16x16 Forum Solved850w PSU enough for SLI 780's and an H80i? Forum SolvedCORSAIR Enthusiast Series TX750 750W 80 PLUS BRONZE Certified Power supply SLI READY? Forum SolvedGTX 760 2 SLI 8120 OC 4.2 625 PSU 80+ bronze Forum Solvedis 850watt 80+plus gold enough for 780 ti sli? Forum SolvedIs lower 80c temp @ Full load high for a GTX 770 SC SLI setup? Forum SolvedWeird SLI Performance Forum SolvedNo performance increase in bf4 with 760's in sli mode Forum SolvedWill using a second video card help performance (non crossfire sli)? Forum SolvedGTX 770 SC 2gb SLI + 1440p: Tangibly strong performance? Forum SolvedWill a 700W 80+ Bronze certified PSU support GTX 780 SLI? Forum More resources Read discussions in other Graphics & Displays categories Ati GPUs Graphics Cards Gtx HD Monitors SLI Crossfire Tuner Cards Radeon Video Diamond Multimedia Matrox Nvidia Palit PowerColor Asus Games !