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Hardware » PCIe 2.1 and 2.0

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Palladin Elite Member Joined: 11/25/10 Posts: 382	2/08/12 10:52:59 PM#1 Report this post Explain why you are reporting this post: (750 characters max.) If my MB has PCIe 2.0 will it run a vid card that is PCIe 2.1? Without messing with the performance. 790Gx chipset GA-MA790GP-DS4H AMD Phenum II x4 3.6Ghz 975 black edition 4 gig Gskill DDR2 1066 duel channel WD 150gig Sata HD Radeon 4870 Power Draw: 330watts. BFG Tech GS-550 550W ATX12V V2.2 / EPS12V V2.8 SLI Ready CrossFire Ready Power Supply I know just enough to be Dangerous Overclocking...no thanks I'll pass
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grunty Advanced Member Joined: 4/06/04 Posts: 5718	2/08/12 11:05:24 PM#2 Report this post Explain why you are reporting this post: (750 characters max.) Originally posted by Palladin If my MB has PCIe 2.0 will it run a vid card that is PCIe 2.1? Without messing with the performance. Yes, it it is backwards compatible and there will not be any noticeable performance problems. 2.1 is mostly a step towards the recently released PCIe 3.0 specifications. There also appear to be some 'old' motherboards with PCIe 2.0 that aren't compatible with 2.1. Most of those can probably become compatible with a firmware update.
Quizzical Guide Joined: 12/11/08 Posts: 7344	2/08/12 11:30:24 PM#3 Report this post Explain why you are reporting this post: (750 characters max.) PCI Express is backward compatible, so yes, it will work, but as PCI Express 2.0. 2.0 and 2.1 are the same speed, anyway. The difference is some technical features that I've never seen explained, so they're probably not a big deal.
Palladin Elite Member Joined: 11/25/10 Posts: 382	2/09/12 1:21:31 PM#4 Report this post Explain why you are reporting this post: (750 characters max.) I am thinking about upgrading from my radeon 4850 to a newer model radeon vid card like maybe a radeon 5970...are the power connectors the dame on these? When I bought the 4850 I was totally suprised byt the power connector and had to buy a whole new power supply to use the radeon 4850. I don't want to be blindsided like that again. I spent a whole week without a comp till i manage to scrounge enough loot to buy the Power supply These days though its time that is in short supply not cash. 790Gx chipset GA-MA790GP-DS4H AMD Phenum II x4 3.6Ghz 975 black edition 4 gig Gskill DDR2 1066 duel channel WD 150gig Sata HD Radeon 4870 Power Draw: 330watts. BFG Tech GS-550 550W ATX12V V2.2 / EPS12V V2.8 SLI Ready CrossFire Ready Power Supply I know just enough to be Dangerous Overclocking...no thanks I'll pass
Ridelynn Elite Member Joined: 12/19/10 Posts: 1457	2/09/12 2:15:04 PM#5 Report this post Explain why you are reporting this post: (750 characters max.) You probably don't want a 5970 unless you get a really good deal on it. Dual GPU cards are generally not a very good deal: two regular video cards of the same generation (in that case, 5870's) are generally faster and cheaper than a single dual GPU card would be. That being said, no video card out there takes more than 2x 8-pin PCIe connectors. From what I can gather, the 4850 is a single 6-pin connector.