4 ms·
PCIe lane width isn't normally a significant bottleneck for GPU performance, for games at least. Going from 16x to 8x loses you 1% or so, depending on the hardw
by barrkel 9y ago
PCIe lane width isn't normally a significant bottleneck for GPU performance, for games at least. Going from 16x to 8x loses you 1% or so, depending on the hardware. I don't know the bus traffic profile of software being run for deep learning, but it may not be noticeable.
I'd also pick a CPU with more lanes though.
- joshu 9y agoIt's fine for a single GPU. For multiple GPUs in a deep learning box you want more.
- Toast_ 9y agoWhat cpu would you recommend? Would it be better to go with a 2x cpu mobo?
- en4bz 9y agoDefinitely not since only 1 socket is usually directly attached to the PCIe bus. The best CPU for the money at the moment is most likely an i7 5830K with 40 PCIe lanes. Or you could wait (probably the best idea) for AMD to release it's "threadripper" CPUs tomorrow with 44 lanes and for Intel to release it's new i7/i9 lineup in 2 weeks, also with 44 lanes.
- Toast_ 9y agoCool, thanks for the info.