Razer

Razer RZ01-03250100-R3U1 Viper 8KHz Ultralight Gaming Mouse (Renewed)

4.4 (368 reviews)

Ultralight 71g ambidextrous gaming mouse with 8000Hz polling rate and a 20K DPI optical sensor (Renewed).

$40.00*$79.95Save 49%
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Razer Viper 8KHz Ultralight Gaming Mouse was the first to bring true 8000Hz HyperPolling technology to market, fundamentally changing what gamers can expect from input responsiveness. Where standard mice communicate with your PC 1,000 times per second, the Viper 8KHz does so 8,000 times, cutting input latency to a fraction of a millisecond. This advantage is paired with the Razer Focus+ 20K optical sensor, which tracks at up to 20,000 DPI with intelligent features like motion sync and asymmetric cut-off for pixel-perfect accuracy and zero spinouts, even during the fastest flick shots.

The mouse's 2nd-generation Razer Optical switches are actuated by light rather than mechanical contact, eliminating debounce delay entirely — and at 8000Hz, those clicks register up to eight times faster than on a 1000Hz mouse, rated for 70 million clicks with no double-click issues. Weighing just 71g, the Viper 8KHz maintains an ambidextrous design with eight programmable buttons and a Speedflex cable engineered for minimal drag. This renewed unit has been tested and verified to full working condition, offering the same competitive-grade performance at a reduced price point. For players who prioritize raw speed and precision over wireless convenience, the Viper 8KHz remains one of the most technically advanced wired gaming mice available.

Key Features

Razer 8000Hz HyperPolling Technology: With a true 8000Hz polling rate, the mouse can communicate its position and clicks to your PC at up to 8000 times a second—for near-zero input latency and a level of speed you’ve yet to experience

Razer Focus+ 20K Optical Sensor: With new intelligent functions such as motion sync and asymmetric cut-off, our sensor flawlessly tracks your movement with zero spinouts, allowing for crisp response and pixel-precise accuracy

2nd-Gen Razer Optical Mouse Switch: The improved polling rate maximizes the switches’ potential so that they register up to 8x faster —providing quick, clean execution for up to 70 million clicks with zero unintended double-clicking

71g Lightweight Design: Its agile form factor is extremely easy to handle and comes at no compromise to its build strength, allowing for deft control that feels like a natural extension of your hand

Razer Speedflex Cable: Woven for greater flexibility and designed to produce minimal drag, you’ll be able to perform quicker, smoother swipes for tighter mouse control

Specifications

Polling Rate
8000Hz (HyperPolling Technology)
Sensor
Razer Focus+ 20K Optical Sensor
Max DPI
20,000
Switches
2nd-Gen Razer Optical (70 million click lifespan)
Weight
71g
Buttons
8 Programmable
Cable
Razer Speedflex
Design
Ambidextrous
Color
Classic Black
Condition
Renewed

Pros & Cons

👍 Pros

  • 8000Hz HyperPolling rate delivers the lowest input latency available in a wired gaming mouse.
  • 71g weight makes it exceptionally easy to maneuver during long gaming sessions without fatigue.
  • Focus+ 20K optical sensor tracks flawlessly with zero spinouts up to 20,000 DPI.
  • Optical switches register clicks up to 8x faster at the higher polling rate and eliminate double-click issues.
  • Ambidextrous shape with side buttons on both sides accommodates left- and right-handed grip styles.

👎 Cons

  • Renewed condition means the unit may have minor cosmetic imperfections or a shorter warranty than new.
  • Wired-only design with no wireless option limits desk setup flexibility.
  • At 71g it is lightweight, but the Speedflex cable can still create some drag compared to wireless alternatives.
  • Razer Synapse software is required for full customization and can be resource-heavy.
  • No RGB lighting on this model, which may disappoint users who want visual flair to match other Razer peripherals.

Frequently Asked Questions

At 8000Hz, the Viper 8KHz reports its position to your PC 8,000 times per second — eight times more frequently than a standard 1000Hz mouse. This reduces input latency to as low as 0.125ms, resulting in noticeably smoother cursor movement and faster click registration in fast-paced scenarios.
A renewed product has been inspected, tested, and restored to working condition by a qualified manufacturer or third-party refurbisher. It may show minor cosmetic wear but is fully functional and typically comes at a lower price than new.
Yes, the Razer Viper 8KHz uses a symmetrical ambidextrous design with side buttons on both sides, making it comfortable and fully functional for both left-handed and right-handed users.
Yes, all 8 buttons are programmable and the Focus+ 20K sensor supports DPI adjustments through Razer Synapse software, allowing you to fine-tune sensitivity, button macros, and polling rate settings.
Yes, the 8000Hz polling rate does place a slightly higher load on your CPU compared to 1000Hz. On modern processors this is negligible, but on older or lower-end systems you may notice a minor impact during CPU-intensive games.