Razer Viper V4 Pro Review
Specifications
Packaging

Shape & Size
The Razer Viper V4 Pro is a large, right-handed symmetrical mouse measuring 127.1 x 63.9 x 39.9 mm. The hump is placed slightly towards the back of the mouse, giving it a good amount of palm support, but not so much that it feels bulky. The front has a slight outward flare, and the sides have a slight inward curvature. The shape is overall very safe and does not feature any aggressive curves, making it very suitable for a large variety of hand-sizes and grip-styles. This new Viper V4 Pro has the exact same shape and size as the previous Viper V3 Pro, but differs very much compared to the older Viper models, such as the Viper Ultimate and Viper V2 Pro, which have a much flatter shape.
Coating
The Razer Viper V4 Pro has a matte coating on the top and sides of the mouse. The coating is very grippy and has a smooth texture. The coating also seems very durable, as it does not show any signs of wear after months of usage. It does accumulate dirt when being used for a while, but it is also very easy to clean, so it is not a major problem. Overall, the coating on the Razer Viper V4 Pro is excellent, and provides a great grip. I do not feel the need to apply any grip-tape to this mouse to improve its grip.
Build Quality
The build quality of the Razer Viper V4 Pro is very good. The mouse feels very solid and well-built, with no creaking or flexing, even when pressing the mouse very hard on the top and sides to check for issues. After months of heavy usage, the mouse still feels like new and has not suffered from any issues over time.
Weight
The Razer Viper V4 Pro weighs 49 grams, which is a 5 gram reduction compared to the previous Viper V3 Pro. While there are lighter mice on the market, the Viper V4 Pro is still very light and easy to move around, especially for its large size. Usually, mice of this size tend to weigh a bit more, so the Viper V4 Pro is a very good option for those who prefer a large, yet lightweight mouse. The weight-distribution of the mouse is also very good. It is slightly heavier towards the front, similar to most mice, but I never notice this during regular usage and it is overall more balanced compared to other mice.
Skates
The skates on the Razer Viper V4 Pro are made of PTFE. They are very large and feel very smooth right out of the box. Unlike some mice, they do not require any noticeable break-in period to make them feel optimally smooth.
Buttons
The Razer Viper V4 Pro uses the same new "Razer Optical Mouse Switches Gen-4" as the DeathAdder V4 Pro. They are rated for 100 million clicks. Compared to the previous Viper V3 Pro, the new switches feel noticeably lighter, yet also more tactile. I find that these are easier to use when spam clicking.
There is no noticeable pre- or post-travel and no side-to-side wobble on the main buttons or the side buttons.
Scroll Wheel
Like the DeathAdder V4 Pro, the Razer Viper V4 Pro also uses the "Razer Optical Scroll Wheel", which, according to Razer, is 3.3x more reliable than mechanical designs. This scroll wheel feels softer than most mechanical encoders and requires less force to scroll. Personally, I prefer slightly more tactility in the scroll wheel when scrolling, but during regular usage, I do not notice any difference in performance compared to a mechanical scroll wheel.
Sensor & Performance
The Razer Viper V4 Pro uses the new "Razer Focus Pro 50K Gen-3" sensor. It is currently the highest performing sensor on the market, featuring a max DPI of 50,000, a tracking speed of 930 IPS, and a max acceleration of 90G. The sensor is very accurate and responsive, and I have not experienced any issues with it during my testing. However, while this mouse has a superior sensor to other mice, I do not personally notice much (if any) difference in terms of actual gameplay. That said, it still feels good to play with a mouse that I know will perform well in any situation, and I do not have to worry about potential issues, which in a way makes me feel more confident when playing, though that is more of a psychological effect than an actual performance difference.
Conclusion
The Razer Viper V4 Pro currently costs $159. That is a high price for any mouse, but it is also the highest performing mouse on the market when it comes to sensor performance. I would argue the same for the switches too, and potentially also the scroll wheel, though that part is more subjective. The build quality, coating, and skates are also very good, and the shape is very safe and suitable for a large variety of hand-sizes and grip-styles. Overall, the Razer Viper V4 Pro is an excellent mouse in all aspects, and I would recommend it to those that are looking for a high-performance mouse and are willing to invest in a more expensive option. Personally, I have been using this mouse as one of my mains since I received it, and will likely continue to do so for a long time.






