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System latency is another area of our testing, where we use Nvidia’s Latency and Display Analyzer Tool (LDAT) to measure end-to-end system latency. LDAT itself is a photosensor which is placed on the monitor. It has an integrated mouse button, allowing it to measure the total time taken from mouse click, to an action happening on screen, which is done by measuring a change in luminance. This data is logged to a CSV file over USB, allowing for close analysis of the data.
As this is end-to-end system latency, we are not measuring only the processing/input latency of each monitor we test. However, we can standardise the test process so the monitor is the only variable. It also gives an insight into how different refresh rates and resolutions can affect end-to-end latency, which is of course highly relevant to your purchasing decision.
We use Rainbow Six Siege for this testing.
System latency is very impressive for the FI32Q X. It's not miles faster than the likes of the iiyama GB2770QSU, but the reduction in latency from 8.9ms to 8.1ms works out as a 9% difference, so it's definitely something. Then again, only the most competitive of gamers are likely to notice, but lower latency is always better.
