I recently picked up an RME HDSPe AIO card, to replace an RME HDSP 9632 in my main DAW, and move the old card to a spare.

While my main DAW has one PCI card slot, I thought I might as well upgrade for future proofing and for the better latency in the specs for the AIO card.

On the specs page for the 9632 RME HDSP reports:

Supported sample frequencies: Internally 32, 44.1, 48, 64, 88.2, 96, 176.4, 192 kHz. Externally 28 kHz - 200 kHz
8 buffer sizes/latencies available: 1.5 ms, 3 ms, 6 ms, 12 ms, 23 ms, 46 ms, 93 ms, 186 ms

And on the specs page for the RME HDSPe AIO:

Supported sample frequencies: Internally 32, 44.1, 48, 64, 88.2, 96, 176.4, 192 kHz. Externally 28 kHz - 200 kHz
8 buffer sizes/latencies available: 0.7 ms, 1.5 ms, 3 ms, 6 ms, 12 ms, 23 ms, 46 ms, 93 ms

So far on my first day testing the new AIO however, I have at least reported by my DAW the exact same latency. I am going to do further testing, after all it's only day one here, however I am a little surprised so far. Perhaps there's something I'm missing in setting things up or how this works?

RME HDSPe AIO: 32 samples at 48.0 kHz
Input Latency 1.60ms / 77 samples
Output Latency 2.31 ms / 111 samples

RME HDSP 9632: 32 samples at 48.0 kHz
Input Latency 1.60ms / 77 samples
Output Latency 2.31 ms / 111 samples