Will I bottleneck the R9-280X?

[Deadlyraver]

Hello all,

I am looking forward to purchasing the R9-280X. But while I am saving up, I am slightly concerned about my current setup atm. I have PCI Express 2.0 slots, and the bus type is 3.0 on the new cards. I am worried that there could be a bottleneck with the new cards, as there is over twice the bandwidth in comparison to my current graphics cards.

The bandwidth of my 7850s is 153.6GB/s each, the R9 280X is double that.

Will this be a concern? Will I need to upgrade my CPU and Motherboard for this?

 

[FreedomEclipse]

Unless youre running crossfire, PCI-E 3.0 will make no noticeable difference to you what so ever.

 

[Outback Bronze]

No you will be fine. I also run crossfire on a 2.0 board with 3.0 cards and see no performance hit.

 

[Deadlyraver]

Well I do intend on running Crossfire.

 

[Jstn7477]

The R9 280X is just an HD 7970 rebadged, shouldn't be a problem. Dual x16 PCIe 2.0 slots are pretty close to what any Ivy Bridge or Haswell LGA 115x user and their PCIe 3.0 x8 slots would have available, and AMD doesn't even have PCIe 3.0 yet on their platforms.

 

[GreiverBlade]

and AMD doesn't even have PCIe 3.0 yet on their platforms.

wrongo
http://www.asus.com/Motherboards/SABERTOOTH_990FXGEN3_R20/

 

[Jstn7477]

wrongo
http://www.asus.com/Motherboards/SABERTOOTH_990FXGEN3_R20/

By PCIe 3.0 support, I meant native and without a bridge chip. Also, that board is apparently problematic.

 

[GreiverBlade]

still that statement is wrong no offense, you didnt stated "AMD doesn't even have PCIe 3.0 yet on their platforms natively." so i jumped in to be a jerk

i seen that board running a CFX of 7990 NZ (non Malta) without any problems (almost wanted to steal it but the dog of my friend wasnt feeling the same), still you are right AMD was the 1st to support natively PCIe 3.0 on gpu but not on chipset.