AMD motherboard PCI 3.0?

fishthedish

Distinguished
Aug 29, 2011
119
0
18,680
when i was looking at motherboards that fit the A+ socket processer i noticed that none of the ones i saw had a PCI 3.0 slot and they had 2.0. but the graphics card i chose uses a PCI 3.0. is that a problem with the higher AMD motherboards? What i am looking for is a good AMD processer/motherboard for a gaming computer i am looking at building.
 
Solution


By the time a single card will be bottlenecked by x16 2.0 slot, AMD boards will probably have 4.0 on them. But more to the point, the fact that AMD only uses 2.0 will not cause you any problems now or in the near future, so you have nothing to worry about.


Yes, it will be exactly the same. PCIe 2.0 x16 has the same bandwidth as PCIe 3.0 x8, which is more than enough for any card.
 


3.0 has twice the bandwidth of 2.0. Right now it doesn't make any difference, but as cards get more powerful, they will eventually require more than 2.0 can handle, especially in SLI or Crossfire setups. Here is an example of a few games tested at various PCIe 3.0 widths just to give you an idea. Since 2.0 is half the bandwidth of 3.0, one card in a x16 slot on your AMD board would be the same as the x8 lines in the chart.
http://images.anandtech.com/graphs/graph5458/43816.png
 
The speed at which data can be transferred.
PCIe 2.0 = 5Gbps per lane
PCIe 3.0 = 8Gbps per lane
There is in fact a noticable difference in these speed, but at this time no graphics cards are able to actually fully utilize it.
So for right now there would be no difference
the argument against getting an AMD could be that if a card comes on the market in 2 or 3 years that can fully use 3.0 speeds you would need a new MB to be able to use it at those speeds.
 


By the time a single card will be bottlenecked by x16 2.0 slot, AMD boards will probably have 4.0 on them. But more to the point, the fact that AMD only uses 2.0 will not cause you any problems now or in the near future, so you have nothing to worry about.
 
Solution
You can't go wrong with that one. I don't see the need to spend so much on a motherboard anyhow as long it is a good brand with good reviews and can accommodate the peripherals you will be using in your build. I'm also working on a new build and trying to figure out what motherboard I want to go with. Good luck with your new system!
 
if you dont want to use more than one graphicscard a 970 chipset is okay, if you want corssfire/sli and a higher end build get a 990fx motherboard, from the reviews i read asus makes really good MB