2 USB 3.0 Controllers (hear and front): USB 3.0 HUBS to achieve 16 webcams. 3 PCIe slots (one PCIe x4 and two PCIe x1, excluding the PCIe x16 to the graphic card): Convert them to USB 3.0 using an adapter + USB 3.0 HUBS, resulting in 24 webcams. Using both assumptions, it's possible to estimate that the mother board P8B75-V can handle at least 50 simultaneous webcams: An USB 3.0 controller have a theoretical maximum transmission speed of 625MB/s wich is capable of handling 34 cameras(625/18 = 34.72), for convenience, lets assume it can handle a maximum of 8 cameras(not confirmed yet). 
An USB 2.0 controller have a effective throughput of 35MB/s, being able to handle 2 cameras(witch I've confirmed in practice). Theoretically an USB HD webcam working at 15 FPS consume a bandwidth nearing 18MB/s - 1280 (width) x 960(height) x 3(RGB channels) x 15(FPS) - without compression.
0 kommentar(er)
