Razer Viper 8KHz Mouse Review

The Razer Viper 8KHz looks identical to the Razer Viper, but it has a thicker cable. Otherwise, it has the same ambidextrous, matte black design with two buttons on each side. It also has an RGB-lit logo on its back.

Despite not having a honeycomb design, the Razer Viper 8KHz is very light. It's only marginally heavier than the regular Razer Viper.

It feels very well-built, similar to the Razer Viper. While there are no rattling or squeaky parts, our unit's plastic body exhibits some flex.

The Razer Viper 8KHz has a true ambidextrous design with two buttons on each side, exactly like the Razer Viper and the Razer Viper Ultimate. It has nice textured grips on both sides, and all of its buttons feel well-placed. Due to its short body, it's best suited for a claw or fingertip grip for most hand sizes, although people with small or medium hands may also feel comfortable with a palm grip.

Due to its short and low-profile design, it isn't suitable for large or extra-large hands with a palm grip. However, people with small or medium hands should feel comfortable.

It's suitable for most hand sizes when used with a claw grip, but it may feel too small for people with extra-large hands.

It's suitable for most hand sizes when used with a fingertip grip, but people with small hands may struggle to reach the scroll wheel.

The Razer Speedflex cable on the Razer Viper 8KHz is basically identical to other cables in the Viper lineup, but it's slightly thicker. It's fairly flexible, but it retains kinks from the packaging.

The Razer Viper 8KHz's virgin grade PTFE feet glide very smoothly on both mouse pads and directly on desks. They're much better than the ones on the regular Razer Viper.

• Razer Viper 8KHz Esports Gaming mouse
• Travel bag
• Stickers
• User manual

The Razer Viper 8KHz has a very wide CPI range that can be adjusted fairly precisely in increments of 50. The set CPI is consistent, but it tends to overshoot a bit more when you move slower than when you move fast; however, this shouldn't be noticeable to most people. It has a low lift-off distance, so the sensor shouldn't track your movements when you reposition your mouse.

The biggest difference it has with the other Razer mice is the polling rate: along with the usual 125Hz, 500Hz, and 1000Hz, it can also be set to 2000Hz, 4000Hz, or 8000Hz. When set to a higher polling rate, the cursor movements should feel smoother and more fluid, but we don't currently test this.

The Razer Viper 8KHz uses optical switches for the main click buttons. Every button can be reprogrammed, including all four side buttons, the CPI switch on the underside of the mouse, and the up/down scrolls. Also, you can set a HyperShift button that gives you a second layer of programmable inputs for as long as you hold it. While you can reprogram the left click, you need to reassign the left click action to another button first.

The scroll wheel on the Razer Viper 8KHz is a standard incremented wheel with very defined notches. However, it's a bit stiff, so you may accidentally middle-click because of the extra pressure you use to scroll.

The clicks are quiet and shouldn't bother people around you, even in a noise-sensitive environment.

The Razer Viper 8KHz's click latency is incredibly low and should feel very responsive.

The Razer Synapse 3 software is great and very user-friendly. You can easily customize most aspects, including the buttons, RGB lighting, set CPI, and polling rate. You can save your settings on the mouse's onboard memory, so all your customizations will remain when switching to another computer. Unfortunately, the software isn't available on macOS.

While it's fully compatible with Windows, the software isn't available on macOS, so you can't remap the mouse's controls or customize the lighting to anything other than the default settings.