Solution
For PXI systems the maximum sustainable data throughput is 110MB/s. However, streaming from RAM to peripherals can cause a drop in throughput of 20% to 40% per bridge.
For PXI Express systems the maximum throughput is limited by the number of links in the chassis and controller. For example, if your system has a PXIe-1085 24 GB/s chassis and a PXIe-8880 controller, the maximum data throughput will be 24 GB/s.
If you aren't sure whether your PXIe-1085 is 12 GB/s or 24 GB/s, you can find out by looking at the part number found on your chassis and the chart below.
| Part Number | Bandwidth |
| 788306-01 | 24 GB/s |
| 786962-01 | 24 GB/s |
| 783588-01 | 24 GB/s |
| 781813-01 (no longer sold) | 12 GB/s |
As you can see in the image below, the chassis backplane has one x16 Gen 3 and one x8 Gen 3 links to communicate the peripherals with the controller. The x16 Gen 3 link contributes with a throughput of 16 GB/s and the x8 Gen 3 contributes with 8 GB/s for a total throughput of 24 GB/s.
The PXIe-8880 controller has two PXI Express Link configuration, one of them has a x8 Gen 3 link and a x16 Gen 3 link for a total throughput of 24 GB/s. This match with the chassis throughput allowing a maximum throughput of 24 GB/s.
