Is 16x 4x on this board a bad idea? Tags: Graphics Cards Power Supplies Graphics Product Last response: July 13, 2010 4:21 AM in Graphics & Displays Share darnock July 12, 2010 12:11:13 AM http://www.newegg.com/Product/Product.aspx?Item=N82E168... from a few charts I've seen only a 5% drop in the 5000 series using a 16x 4x,, i'm using this board and 2 4870's i was not planning on crossfiring but i got the extra card for free and my power supply can take the load.. so what should i do? thanks More about : 16x board bad idea jyjjy a c 376 U Graphics card a b ) Power supply July 12, 2010 12:24:21 AM Well if you've got the card do some benchmarks of your own and see if it is worth it for you. If it doesn't seem worth it you can always put it on ebay or get a board with a x8 slot. darnock July 12, 2010 12:27:06 AM thats a great idea! what % increase in score would be a good range? Related resources Can Nvidia GPUs run on PCIE 2.0 16x @ 4x? - Forum PCIe 3.0 16x and PCIe x16( running at 4x) - Forum GTX 780 in 16x slot only running at 4x - Forum Flash OEM board with retail board's BIOS? Probably a bad idea? - Forum 560TI single card in PCI-E 16x (4x mode) slot - Forum Can't find your answer ? Ask ! Get the answer jyjjy a c 376 U Graphics card a b ) Power supply July 12, 2010 12:34:28 AM Well, the performance increase from a single HD4870 to an HD4870x2 tends to be somewhere in the 70-80% area on average. jyjjy a c 376 U Graphics card a b ) Power supply July 12, 2010 12:41:56 AM Let us know how it goes. It be interested to see how much a PCIE 2.0 x4 slot limits an HD4870. darnock July 12, 2010 3:01:40 AM i did the benchmark test Heaven here is my score for 1 card fps 35.6 score 897 on crossfire i got fps 70 score 1764 heaven's settings i used the default direct 3d11 1920x1080 shade high tex high filter tri 4x seems like a 95% boost, not bad darnock July 12, 2010 3:03:19 AM rest of my system... win 7 64bit 4 gigs ram amd 955 at 4.0ghz again the 2cards are 4870's jyjjy a c 376 U Graphics card a b ) Power supply July 12, 2010 3:25:40 AM I'd try it in a real game or two. Perhaps something with a built in benchmark like Crysis, Far Cry 2, GTA4, Just Cause 2, ect. darnock July 13, 2010 1:58:03 AM okay just did the just cause 2 benchmark on 1920x1080 on max settings 1 card time 128seconds, 20.43 fps 2 cards time 121seconds 48.08 fps darnock July 13, 2010 1:58:54 AM just hoping this info will help someone out jyjjy a c 376 U Graphics card a b ) Power supply July 13, 2010 4:21:39 AM That's some impressive scaling. I guess the x4 slot isn't all that bad on PCIE 2.0 boards. Can't find your answer ? Ask ! Publish Related resources Need Help on PCIE Bandwidth Please & GPU PCIE Lane Usage - 4x / 8x / 16x Forum Crossfire with 16x and 4x slots Forum SolvedCard works in PCI express 4x, but not in PCI express 16x Forum SolvedPCIe 16x Video Card Throttled to 4x? Forum Running Crossfire 16x + 4x Forum PCI-E 16x (4x) less performance then a normal pci-e 3.0? Forum amd 7750 getting better fps in 4x slot than 16x Forum SolvedPCI-e 4x in a PCI-e 16x slot? Forum Is there a PCI-e hub? Would it be possible to split a 16x lane into 4 4x lanes? Forum GTX 780 running at 4x PCI-E instead of 16x Forum will a 8x raid card work in 16x slot running at 4x Forum Will a PCIe 3.0 card work on a PCIe 1 16x working at 4x? Forum PCI Express 16x vs 4x Forum Crossfire 4x & 16x? Forum Crossfire 16x 4x 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 !