4000Hz Polling Rate Tested EVGA Z15 & Z20

Keyboard Input Lag - does a 4000Hz polling rate make a difference?

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0:00 Intro
0:10 Who cares about Keyboard Lag?
1:06 4000Hz Polling Rate Keyboards
2:00 4000Hz vs. 1000Hz
4:19 End-To-End delay including Key Switch Delay
7:20 Final Thoughts

! This video was NOT sponsored
! EVGA provided review units of the Z15 and Z20 for this video

#EVGA #4000Hz #InputLag #Z15 # Z20 #Keyboard

[MinimumIngenium]

Your content is brilliant and unique, keep it up!

[Blindastronomer]

Hi Chris, thanks for the video. Might I suggest you also test the Steelseries Apex Pro, which uses Hall Effect sensor "Omni-point" switches, and advertises the key delay as <0.5ms.

Also, your recent video on the Viper 8kHz has left some people in the mouse enthusiast community a little puzzled. In it, you showed that one mouse exhibited lower overall input delay when running at 1600 CPI compared to either 400 or 800 CPI. This has people wondering if all mice should operate at 1600-3200 CPI for the lowest input delay -- something I would not expect to be the case, but merits clarification / further investigation.

Again, thanks for the great content, we appreciate the work you (guys!) do.

[tomwolf]

You should create a PC Build tutorial. It would be brilliant!

[hmbr]

Do a test for hk gaming gk61 optical yellow ☺️

[CrayTechTV]

people out here worried about shaving 1ms off their keypress but miss 80% of their shots lol

[bismuth]

Im dying to know if all ps/2 keyboards behave like this.

[YonatanAvhar]

That switch comparison sounds like it would be really interesting, but wouldn't it just boil down to the actuation distance of the switches? Since the solenoid is so fast

[CrisIsBored]

did you check out the Cherry MX Board 6.0 with its analog input and 1ms latency guaranteed ;)

[Oldsah]

I am interested in a follow-up with perhaps the razer optical keyboards as well

[Paiin]

Are you gonna cover the NVIDEA reflex in Rainbow Six Siege? And the improved Servers?

[Petrakeas]

Looking forward to seeing measurements of corsair k100 with the new method.

[Hathos]

This data is actually really amazing. If people could send you popular keyboards of brands like Logitech, or perhaps even more niche mechanical keyboards, to test, it would be interesting to see the results.

[ThomasMuehler]

Great stuff as always! Appreciate the time and effort you put into your videos.

I would be really interested, especially since the K70 was fastest, how the Corsair K100 with optical switches would perform? As it’s entire purpose appears to be for speed. Also, would be interested in Razer’s optical switches as well.

[benwilliam]

Great Work, Thank you!
a comparison between USB 2.0 (polling) vs real USB 3.0 (interrupt based) would be awesome

[muffinman]

You're doing gods work, your latency testing setups are very neat. Now I'm super interested which keyboards are actually the fastest. I wonder how hyperx keyboards that almost all pros use compare to the k70, for example.

[rob_over_]

I love that you put so much effort into dispelling all of the Marketing(non)sense that comes with "gaming" peripherals now ;)

[trialav]

Does the windows mouse pointer speed have an effect on anything latency wise

[bokisatrii]

You tested a ps/2 keyboard which is really old right? maybe the proccessing chip inside it is really slow? A good keyboard to test would be Wooting One and Bloody Optical keyboards since they claim to have the fastest response times. Patreons please make this happen!

[BattousaiHBr]

4:08 for people thinking this is very impressive, raw performance is not the whole story.
the reason they can get such low input lag (and also the reason the PS/2 keyboard that theoretically should be the fastest but instead is the slowest) is because the biggest contributor to the delay is the circuitry and internal processing of the keyboard.
in the case of the PS/2 keyboard, because it is using common circuitry and chips, the internal processing time is slow. meanwhile, the corsair one, besides having very fast processing, also shoves off a lot of time with very tight debouncing wait.
if you know what debouncing is and why you need to wait for it, as one might expect, very short debouncing also means less reliability of the switches with age. this is probably the biggest reason these corsair keyboards see a lot of key chattering 1+ years after use, and also the reason i stopped buying them in favor of an optical switch keyboard which doesn't suffer from having to wait for debounce. mine in particular is not as good as i'd like it to be, but it at least didn't start malfunctioning before 2 years of use, which IMO is a big improvement.

[Thunderbolt]

Thanks for the amazing content!
Could you perhaps include some of the most popular keyboards for the next time, like the Razer huntsman te, Apex pro tkl and Corsair k100 OPX switches.