4 ms·
Well, that's why I'm holding on to my decades old Cherry PS/2 keyboard. No polling, no latency, no ghosting, no key rollover issues. Unfortunately the PS/2 port
by jgb1984 5y ago
Well, that's why I'm holding on to my decades old Cherry PS/2 keyboard. No polling, no latency, no ghosting, no key rollover issues.
Unfortunately the PS/2 port is becoming rare, I'm limited to MSI for my upcoming AMD B550 motherboard because it's the only brand that offers it on a nicely specced ATX board.
- praptak 5y agoThere are PS/2 to USB converters but who knows what latency they add.
- jgb1984 5y agoUnfortunately the inherent PS2 advantages disappear when you use such a convertor afaik.
- exporectomy 5y agoApparently [1] PS/2 limited by a slower data rate than USB 2.0 which cancels out almost all the advantage of its lower initial latency to begin the transmission, making them both about equally capable in actual latency - at least in theory. [1] https://youtu.be/wdgULBpRoXk?t=1953 https://youtu.be/wdgULBpRoXk?t=1953 Even if this conclusion is wrong, that video is a very pleasant and understandable explanation of the USB protocol.
- kitsunesoba 5y agoI wonder how much CPU load changes the equation. I've experienced USB input locking up or stuttering as a result of high CPU load, which presumably wouldn't happen with PS/2.
- deleted 5y ago[deleted]