4 ms·
The point is that GPUs need to be physically near CPUs and RAM. You can do all kinds of external PCI expansion, including Thunderbolt cables several meters long
by WiseWeasel 13y ago
The point is that GPUs need to be physically near CPUs and RAM. You can do all kinds of external PCI expansion, including Thunderbolt cables several meters long, but you'd never attach a GPU to that other end.
- dippyskoodlez 13y agoPeople are running GPU's through thunderbolt on Macbook Airs. TB Actually has provisions for doing this, but they are severely underdeveloped.
- WiseWeasel 13y agoThat's not going to work well. Thunderbolt 2 is 20 Gbit/sec per connection, vs 128Gbit/sec for a 16x PCIe 3.0 slot.
- ChuckMcM 13y agoAs Wise points out the challenge is the bandwidth. You can run video cards over USB (see DisplayLink) but the update rates suffer from being constrained to 480 megabits/sec. So if you are paying a lot of money for something, you probably want commensurate performance.