Gadgetory

everyone we're at the PAX East 2017 show now this is our second video for the show we're at the Logitech G suite and the show looking at some of the keyboard timing testing that they have here similar to the Mouse timing test we saw last year but simplified in a great deal and a number of ways that are actually helpful to us because maybe this is something we could replicate in the future in our own lab before we get into this content it is brought to you by EVGA and the GTX 1080i CX cards like the ftw2 that we tested recently you can also find the 1080 Ti shortly probably the next month or so playing the description below for more information on that so let's get to this first of all we have the new keyboard this is the Logitech G Pro keyboard we'll have information on that in the article below the competing keyboard or at least the comparative one is the razer blackwidow tournament edition and what we're doing is pushing a giant red button to get a delta in the response time between the keyboards so how does that work well we push the button we see that the Logitech one of course tends to be winning by a couple milliseconds that's why they would want to show us this but they also want to show as last year that there's no funny business going on so we have one of the modules here the black box with the button on it that is torn down and what we see is when I push this button what's happening is that's being fed through here the obviously disconnected on this one that feeds through here goes into a breadboard up here and through a timing circuit that is event eventually connected to a Raspberry Pi 3 that's what's underneath here so that feeds through there is a timer to make sure that when we push this button the signal goes out simultaneously to both keyboards so it feeds out through the front of this which would be right here through these cables and these are connected to the L key on the keyboard so it's basically simulating pushing the L key through an electric switch that way there's no human error when pushing the key if you were to test it man we could also do but there'd be human there so there's really no point so that feeds into the keyboard fires the Alt key then comes back out through USB beaten and the Raspberry Pi is able to say which one was first so it sets basically sets a flag almost like a keyframe when you push the button says this is the time it is comes back this time it was when it came back and then you get your delta which is here I don't have an absolute time for you in terms of how frequently or how fast these things are in absolutes it's definitely below 50 milliseconds the deltas there now one thing to clarify here is response versus report times and rates so when you're talking about report or poll rates you normally see something like the thousand Hertz thousand times per second your mice your keyboard towards them advertise 500 a thousand Hertz that is the report rate or the poll rates this is the response time so they're different if we push a key here it has a response time it feeds into the system and eventually gets reported to windows now unfortunately even though you're being pulled a thousand times per second that doesn't mean there's new data a thousand times per second what it means is it's getting pulled and it might miss one of those cycles and so if you missed the cycle if we miss by 10 milliseconds we have to wait for the next poll does it matter that's hard to say because ultimately we're talking milliseconds here for actual pro-gamers people who aren't me maybe it matters I couldn't tell you but what we can't see is the objective difference between them and at least a delta value through this breadboard and Raspberry Pi setup which is at least pretty cool we saw that with the more advanced version for the mice last year if you want to check that out we'll leave a link below and as always an article below for more information subscribe for more patreon.com slash gamers exit alles out directly we might look into something like this in the future I'll let you know thanks for watching I'll see you all next time