pcie 2.0 has 8gb bandwidth and msi radeon r9 270x requires 179.2 memory bandwidth???

Taha Siddiqui · Oct 11, 2014

pcie 2.0 has 8gb bandwidth and msi radeon r9 270x requires 179.2 memory bandwidth, CAN IT WORK, plz explain I am new ! Thanks

i7Baby · Oct 11, 2014

pcie2.0 has 5 GT/s or 500MB/s transfer rate - http://en.wikipedia.org/wiki/PCI_Express - per lane. x8 is 4GB/s

Radeon don't list transfer rates for their GPUs - http://www.amd.com/en-us/products/graphics/desktop/r9 but they'll be in 100's MB/s. No graphics cards saturate the lanes in pcie2.0 x8.

Taha Siddiqui · Oct 11, 2014

See here on memory bandwidth of r9 270x on amd's website http://www.amd.com/en-us/products/graphics/desktop/r9 you gave

i7Baby · Oct 11, 2014

Yep - see it - up to 179.2 GB/s. That's its theoretical interface max. Not the max out of the R9 270X.

Taha Siddiqui · Oct 11, 2014

i7Baby :

Thanks for helping me, but as I am new plz explain me what is the theoretical interface and the 179.2 GB/S ??????

i7Baby · Oct 11, 2014

Google it. Or just give up. All cards work fine.