5 ms·
More curious about the latency and how that impacts performance, even with DMA going over the PCIe bus to a NVMe SSD is a longer trek.
by snuxoll 9y ago
More curious about the latency and how that impacts performance, even with DMA going over the PCIe bus to a NVMe SSD is a longer trek.
- justinclift 9y agoIsn't the "2TB" NVMe SSD (in this case) directly interfaced to the card, so not going over the system PCIe bus?
- snuxoll 9y agoIt is, which is why I'm curious how this improves performance compared to exactly the scenario of hitting NVMe storage over the bus.
- neilmovva 9y agoGPUs are generally not latency optimized anyway - if an app is sensitive to tens of microseconds then it belongs on the CPU, broadly speaking. AMD's advantage here is getting drop-in throughput, by switching the SSD directly to the GPU. Thus, the onboard SSD doesn't waste host PCIe lanes (4 lanes, typically) that are getting hard to come by in regular desktop computing systems.