the wire on this is absolutely perfect. 0 drag, dont even notice it's there until I look down. dont have to use my cord bungee either. I almost got the viper ult but knowing how this mouse feels, it would've been a waste of money to me. VSyncTester’s HTML/JavaScript mouse input performance benchmark looks at mouse latency. Again, this test is subject to how consistently I can move each mouse, but the Viper 8K Hz managed the best score, usually in the 3.30ms range. The DeathAdder V2 Mini and Burst Pro were both typically in the 3.40ms area, not far behind.

I investigated using https://rzr.to/pollingrate from Razer. The results confirmed my first impression: That 8,000Hz polling rate makes a tremendous difference in-game, too. Weapon movement is noticeably crisper in the likes of Apex Legends, and this allowed me to pull off precision shots with much more ease. I actually set up a 1K Hz mouse alongside the 8K, and it felt weirdly choppy by comparison. It was still fine in the grand scheme of things, but I only realized how much cursor stutter affects performance when I was hopping from one device to the other. It feels as if you're fighting with those older mice, whereas the 8K removes barriers you may not have realized were there in the first place.Then I used a polling rate of 4kHz for some days. CSGO was stable and my FPS were good. Even the polling rate was stable:

The 144 Hz requirement is more attainable, but Razer claims that the higher the refresh rate, the greater the benefits. This is a future-proofing mouse, and it’s best mate currently is, really, a 360 Hz monitor, which we’ve found to show noticeable improvements in speed and response compared to 240 Hz monitors. I didn’t have one on hand though, so for my testing I used a Razer Blade 15 Advanced Model, one of the best gaming laptops. One very important caveat is that you need some decently beefy gear to reap the rewards: the 8Khz polling rate will make your PC work harder and unless you’re gaming on a high refresh rate monitor the advantages of the high polling rate will not be tangible at all. There’s also the fact that not all games support this kind of polling rate, so you might not get the full benefit from this tech for quite a while. Consider it an early adopter tax. On to the mouse, then. I have never extensively tested a regular Viper but I did review the Viper Ultimateand Viper Miniso I have some experience with the product line. What immediately caught my attention when I first grabbed the 8KHz is how much better the buttons feel. I had no problems with the first iteration of Razer’s optical mouse switches (at least not on the units that I got for review) but it couldn’t be denied that they felt a fair bit less crispy than actual mechanical switches, and it feels as if Razer has really been working on that aspect.Powered by Razer's own 'Hyperpolling Technology', the Viper 8K aims to lower latency well below what we're used to. In fact, it offers a polling rate of 8,000Hz - significantly beyond the industry average of 1,000Hz. To translate, this removes cursor stutter on displays with a higher refresh rate by telling your PC or laptop where the cursor is more frequently. In fact, Razer suggests that the 8K reduces input delay from 1ms to 1/8th of a millisecond. The gap between your input and movement on-screen becomes much, much smaller as a result. But additionally, the mouse is literally ambidextrous (identical on both sides) – so it’s the perfect product for a left-handed mouse user! I just got mine after having a Logitech G502 (non-ambidextrous mouse) for like….7 years…. And as a right-handed mouse user, I was pretty worried about the ambidextrous design. But after just two days of use, I can confirm that this mouse feels amazing! The only issue is that the buttons on your non-thumb side of the mouse are a bit difficult to reach – but that 8000hz polling rate makes it feel absolutely amazing so long as you computer is beefy enough to push your games at a high refresh rate. But anyway, being that you currently have a mouse that is extremely similar to my G502, you’d probably get adjusted to the Viper in a few days – just like I did. Some game engines, particularly in older titles, simply cannot handle high polling rate devices well, as they were never designed with such devices in mind. It makes sense — in theory. The Viper 8K reports its position 8,000 times a second. But there’s an important link here between your monitor’s refresh rate and whether a higher polling rate will even matter. Unless you’re running a 144Hz monitor, and maybe not even then, you aren’t likely to notice any difference whatsoever. Likewise, trying to run such a high polling rate actually has a noticeable impact on CPU usage, which is probably why this was the first mouse I’ve ever reviewed where the manufacturer sent me recommended system requirements:

Polling rate isn’t the only thing boosted on the Viper 8K Hz. Even if you ignore the high polling rate, this is a high-specced rat, thanks to Razer’s homegrown Focus+ optical sensor. Although in introducing this mouse Razer is saying demonstratively and literally that it thinks a high polling rate enhances the gaming experience more than high CPI, the Viper 8K Hz still goes up to 20,000 CPI. The sensor is also specced to handle velocities of up to 650 IPS and 50g of acceleration. That’s an upgrade from the original Viper, which uses the Razer 5G optical sensor (16,000 CPI / 450 IPS / 50g) but matches the pricier wireless Viper Ultimate’s specs. But unless you game at the highest CPI (most don’t) or move your mouse with super aggression, you probably would’ve been fine with the 5G. With a polling rate of 8kHz in CSGO I had extreme stuttering. The game was lagging moving the mouse. The issue was even more extreme using a VOIP application (Teamspeak or Discord). We've converted this review to Test Bench 1.2. This update simplifies our Weight test and expands on our CPI test from Test Bench 1.1, resulting in changes to test results in both sections. For more details, you can see our complete changelog here. In addition to beefier specs, the Focus+ also has some high-end features. But to be honest, there’s a good chance you’ll never notice them. In fact, trying to run at 8K even caused some problems in Apex Legends. When making fast turns, my game would sometimes stutter like it was trying to catch up in frames. Considering the specs of my gaming PC, it shouldn’t be a hardware limitation. In my search for an answer, I came across reports from other gamers experiencing the same but the only consistent factor between them seemed to be that turning down the polling rate fixed the problem. In my case, dropping to 2,000Hz fixed the issue. I wasn’t as bad off as some, but clearly even high-end systems can experience issues.Doing the usual testing (shaking, squeezing, tapping) reveals that this is built really well. Nothing felt loose or annoying, and even when I applied as much pressure as I could the shell did not budge. This is one really nicely built product. Obviously I cannot comment on the actual durability (I don’t test these products for years) but from what I can tell there’s no need to worry. For testing, I also set the laptop to use its discrete GPU only and put the CPU and GPU on boost modes in the laptop’s Synapse software to further fight latency. 8,000 Hz Polling Rate Testing Everyone can use it, too. Much like the older models, this Viper is cleverly put together so that the unneeded side buttons won't be accidentally hit during play (the same is true of having the DPI button on the underside of the mouse, which is a decision I'm not a fan of but I understand the logic behind it).