Samsung Shaved the S Pen Lag Down to 9ms and I Can't Stop Thinking About It

Samsung Shaved the S Pen Lag Down to 9ms and I Can't Stop Thinking About It

Tech News galaxy-note20 s-pen samsung stylus unpacked-2020

Samsung did their Unpacked thing on Wednesday, all virtual, Note 20 and Note 20 Ultra and the Z Fold 2 teaser and the Watch 3 and those bean-shaped earbuds. I sat on this for a couple days because I wanted to read actual hands-on impressions instead of just regurgitating the press release like half the tech sites did within an hour of the stream ending. And the thing that stuck with me isn't the 108MP camera or the 6.9 inch screen. It's a number almost nobody is leading with: S Pen latency on the Note 20 Ultra is down to 9 milliseconds, from 42ms on last year's Note 10.

That's not a rounding error. That's the difference between "digital pen that technically works" and something that starts to feel like an actual pen dragging actual ink across actual paper. I've used a Note 10 for the better part of a year (work bought it, don't ask) and even at 42ms you could see the line trailing behind the tip if you wrote fast, this tiny lag that your brain compensates for but never quite forgets about. Apple Pencil on the iPad Pro has been sitting around 9ms for a couple years now and everyone who's used both has said the same thing: that's roughly the threshold where it stops feeling like a gimmick.

I have a complicated history with styluses, for what it's worth. I owned a Palm Treo back in the mid-2000s and lost three different plastic nubs down the back of car seats before giving up and just jamming my fingernail into the resistive screen like an animal. The Note line is really the first stylus experience that made me think maybe this is a real input method and not just a bullet point on a spec sheet. If Samsung's actually closed the gap to Apple Pencil territory, that's a genuinely big deal for anyone who takes handwritten notes on a tablet-ish device, which, fine, is a smaller group of people than Samsung's marketing department wants to admit, but I'm in it.

The rest of the launch was fine. Note 20 Ultra starts at $1,299 which is a lot of money for a phone, the regular Note 20 is $999 and apparently has a plastic back instead of glass, which some reviewers are already complaining about and I get it but also who's licking their phone. The Z Fold 2 got teased without a price, which feels like a tell that Samsung knows the number is going to make people wince, and sure enough they're saving the full reveal for a separate event next month. Watch 3 starts at $399. Tab S7 is $649. None of that is surprising, it's just Samsung doing Samsung math where every product line gets a slightly bigger, slightly pricier update every August like clockwork, and it's been that way since I started paying attention to Unpacked events, which at this point is close to a decade.

Can we talk about the Buds Live for a second though. They're shaped like beans. Actual, literal beans, kidney-bean-shaped earbuds that sit in your ear canal but don't seal it, so you get this weird open-fit thing that Samsung says is more comfortable for long wear. Maybe it is! I haven't tried them. But every render I've seen makes them look like something you'd pull out of a bag of trail mix, and I say that as someone who will probably still buy a pair because my current earbuds keep falling out during runs and I'm tired of it.

Anyway. The latency number is the story, as far as I'm concerned, even though it's buried on page four of every "everything Samsung announced" listicle currently clogging up my RSS reader. Input lag is one of those things that's genuinely hard to market because you can't put "9ms" on a billboard and expect anyone to care, but it's exactly the kind of unglamorous engineering that actually changes how a device feels day to day. I'd take a phone that shaved 30 milliseconds off pen latency over one with 20 more megapixels any day of the week. Nobody asked me, but there it is.

Reviews with actual S Pen testing should start showing up once units ship later this month. I'm curious whether 9ms holds up under real use or whether it's one of those lab-conditions numbers that falls apart the second you're writing at a weird angle with the screen brightness cranked up outside. We'll see.