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 SLI x16/x16 vs x8/x8, PCIe 3.0 vs 2.0 - Forum 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 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 273 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 SolvedAM3 SLI MB ( x16/x16 ) Forum 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 SolvedGtx 760 sli and CM rs600 g 80+ 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 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 !