The Viper Ultimate can store up to five profiles in the mouse's internal, onboard memory, which is about standard for a high-end product. You can customize and save as many profiles as you want in the Synapse software PC-side, though, and swap them out as you move games in and out of rotation. Designed especially for e-sport players, the Viper Ultimate sees the same streamlined form as the wired Razer Viper, cutting off any excess fat or buttons to see the weight fall to a feather-light 74 grams. Factor in an impressive 70-hour battery life, and the Viper Ultimate is shaping up to be an extremely good wireless option for competitive gamers. I went hands-on with the new peripheral to see whether those incredible specs can equate to an incredible performance. There’s a couple of headline specs and features here, but the most noteworthy is Razer’s new HyperSpeed technology. Gaming manufacturers have realised Bluetooth has been throttling the performance of gaming mice, with the latency and accuracy not quite high enough to compete with wired peripherals.

Razer has concentrated its efforts into making the Viper Ultimate the absolute best performing gaming mouse in the e-sports market, and on first impressions, it’s done an outstanding job. I was unable to test how accurate Razer’s battery claim is, since I was only given a few hours with the peripheral at Razer’s HQ office. I already have a review sample though, so watch out for our final review and verdict soon. Playing a few rounds of Counter-Strike: Global Offensive, it was genuinely difficult to tell the difference between the Viper Ultimate and a wired mouse – I even found myself winning more 50/50 shootout duels than usual. So, y ou’re not sacrificing performance at all by cutting the cord.Successor to the award-winning Razer Viper Ultimate. More than 20% lighter, armed with all-round upgrades, and one of the lightest wireless gaming mice evercreated. Learn More >

With a whopping 20,000 DPI (dots per inch), the Viper Ultimate is the world’s most sensitive gaming mouse. This is an impressive record, but by Razer’s own admission, this isn’t as big of a game-changer as you might expect, with the ideal sensitivity level for gamers said to be around 800-1600. I suppose it’s nice to have the option though, even if 20,000 is very much overkill. The Razer Viper Ultimate also has the privilege of being the first gaming mouse to own Razer’s new optical sensor, the Focus+. The benefits this brings to Razer’s mouse include the industry’s highest DPI sensitivity and inches per second performance. Razer Chroma RGB lighting is of course still present, boasting 16.8 million colours, but is far more understated than consumer-level gaming mice. It’s only the Razer Logo that glows, and even that can be turned off via the Razer Synapse app if users find it distracting. Razer says it lasts up to 70 hours between charges, a claim that does shake out. After spending a week or so with the Viper Ultimate during heavy usage in both games and while flying through day-to-day work, we notice that it drains extremely slowly. It certainly outlasts our MacBook Pro's Magic Mouse, something we appreciated immensely, as charging peripherals is not something you want to have to do often. The Viper Ultimate relies on Razer's software suite for all its customization, including Razer Synapse to change its settings and Razer Chroma to customize its lighting. If you've used any Razer products before, the systems are as easy to use as ever. If you haven't, it's generally snap-simple to reset DPI presets and remap buttons across your profiles.The Razer Viper Ultimate is a new wireless mouse aimed at e-sports, with Razer claiming its new HyperSpeed wireless technology is a significantly superior alternative to Bluetooth in terms of speed, reliability and accuracy. With 16.8 million colors, countless patterns, dynamic in-game lighting effects—experience full RGB customization and deeper immersion with the world’s largest lighting ecosystem for gaming devices. Supporting a growing list of thousands of devices and hundreds of games & applications, take it to the next level with advanced features such as Chroma Studio, Visualizer, Connect andWorkshop. You can change your DPI with a press of the DPI cycle button at the bottom of the mouse. The factory DPI settings are set at 400, 800 (default), 1600, 2400 & 3200, or you can fine-tune your own sensitivity setting using Razer Synapse3. The Razer Viper Ultimate weighs 74 grams, which admittedly doesn’t make it the lightest gaming wireless mouse, but it at least undercuts the the 121g heft of the Viper Ultimate’s closest rival, the Logitech G Pro Wireless . The Razer Viper Ultimate sports a simplistic design, prioritising performance over fashion. In fact, it looks pretty much like a traditional gaming mouse, with the green Razer logo slapped on for good measure.

Razer suggests HyperSpeed is 25% faster than other wireless technologies – a bold claim given the success of Logitech’s Lightspeed. HyperSpeed connectivity gives the Viper Ultimate an excellent and stable 998Hz polling rate, which effectively means the mouse is reporting its position to the computer every millisecond for pin-point accuracy. Importantly, the Viper Ultimate feels really comfortable in my hand, and not having a cable connected is as freeing as ever. The casing is made out of plastic, but certainly still feels premium. This mouse flaunts class in every department. As a righty, I tend to avoid ambidextrous mice because most are designed with a low profile and less support for your hand. The Viper line is a rare exception. Though it doesn't have a hump or a sweet spot that lets your hand fall into place, the Viper is comfortable to use, even over long stretches. At 1.5 by 2.6 by 5 inches, it can feel a little skinny compared to other mice, especially if you're switching from one not made for competition. But it's easy to adjust and find a comfortable grip. You could accuse the Viper Ultimate of looking somewhat plain, but there’s a good reason for this. Razer has chopped away all the needless plastic to make its e-sports focused peripheral as light as possible. The USB wireless dongle is stored in a compartment on the underside of the mouse itself. Simply remove the cover to store or remove your USBdongle.

Razer demonstrated (with benchmark software it had developed itself, admittedly) that HyperSpeed boasts an even more stable performance than a wired Logitech rival. Razer did admit the difference was so negligible a human wouldn’t notice the difference, but it’s still remarkable to see its mouse offering a wireless performance equivalent to a wired connection. Okay, so let's get to the good stuff—the wireless stuff. The Viper Ultimate connects to your PC using a 2.4GHz RF dongle. As we've seen throughout the year on mice like the Logitech G502 Lightspeed and the Corsair Ironclaw Wireless RGB, these connections generally work better than Bluetooth, providing a stable, nearly lag-free experience. Will you have to give up a USB port for your trouble? Sure. But you'd have to do the same thing for the cable on a wired mouse. Enjoy faster and smoother control with a lightweight wireless mouse designed for esports. Weighing just 74g, it achieves its weight without compromising on the build strength of its ambidextrous formfactor. Having played a few rounds of Counter-Strike and seeing several performance demonstrations from Razer, I’ve got extremely high hopes for the Razer Viper Ultimate. If Razer’s bold claims for its new optical sensor and HyperSpeed wireless technology are true, then this mouse looks to be the best performing option for e-sports with seemingly no sacrifices made at all to go cordless.