Average score
Product 1: Logitech G502 X Lightspeed
4.0
Product 2: Razer Viper V4 Pro
4.2
2.4GHz connectivity
Product 1: Logitech G502 X Lightspeed
4.5

The reviews that mention the receiver describe 2.4GHz operation through the included wireless dongle and report solid PC connection behavior.

Product 2: Razer Viper V4 Pro
4.8

Reviews reference HyperSpeed Wireless Gen-2 and the bundled low-latency dongle as key connection upgrades. This mouse is clearly designed around proprietary dongle wireless rather than casual secondary modes.

acceleration control
Product 1: Logitech G502 X Lightspeed
4.8

Sensor-focused comments consistently point to clean movement handling, with reviewers calling out zero acceleration, no jitter, and no unwanted filtering or smoothing.

Product 2: Razer Viper V4 Pro
4.4

Reviews mention Dynamic Sensitivity and related tuning that can change how speed or acceleration behaves. That gives advanced users meaningful control over pointer response.

Accuracy and tracking precision
Product 1: Logitech G502 X Lightspeed
4.7

Tracking precision is treated as a strength: reviewers cite exact hand tracking, 1:1 tracking, and submicron movement tracking.

Product 2: Razer Viper V4 Pro
4.8

Reviews consistently describe the tracking as exact, precise, and highly dependable in play. Several reviewers say shots land where intended, especially in competitive shooters.

balance and weight distribution
Product 1: Logitech G502 X Lightspeed
No score yet
Product 2: Razer Viper V4 Pro
4.8

Reviews describe the weight as centered, balanced, or evenly distributed. That balance is repeatedly tied to better control and a lighter-feeling experience during play.

battery life
Product 1: Logitech G502 X Lightspeed
4.7

Battery life is one of the clearest strengths, with multiple reviews citing 140-hour expectations or testing and another review still calling battery life solid.

Product 2: Razer Viper V4 Pro
4.8

Battery life is a consensus strength. Most reviews repeat the same core claim of up to 180 hours at 1,000Hz and 45 hours at 8,000Hz, and several say the real-world endurance feels excellent.

Bluetooth support
Product 1: Logitech G502 X Lightspeed
1.0

The only direct Bluetooth evidence says the mouse does not include Bluetooth connectivity, so this scores as a missing feature rather than a strength.

Product 2: Razer Viper V4 Pro
1.0

Reviews explicitly say Bluetooth is absent. The Viper V4 Pro prioritizes its gaming-focused dongle wireless setup instead.

build quality
Product 1: Logitech G502 X Lightspeed
4.0

Build impressions are split: one review found loose-feeling construction, while others reported robust build quality, no drop-test damage, and sturdy assembly.

Product 2: Razer Viper V4 Pro
4.9

Build quality is one of the strongest consensus wins in the review set. Reviewers repeatedly praise rigidity, lack of creak, and confidence-inspiring construction.

button customization
Product 1: Logitech G502 X Lightspeed
4.5

Customization is well supported through remappable buttons, swappable or repositionable controls, DPI adjustment, and G Hub assignment options.

Product 2: Razer Viper V4 Pro
4.6

Synapse and Synapse Web are repeatedly cited for remapping and control over the available buttons. Reviewers present customization as thorough rather than bare-bones.

button responsiveness
Product 1: Logitech G502 X Lightspeed
4.5

Button responsiveness is generally positive, with reviewers reporting reliable buttons, responsive clicks, and satisfying response during use.

Product 2: Razer Viper V4 Pro
4.8

Button presses are consistently described as responsive, fast, and precise. Multiple reviewers also note that the mouse avoids misclick or laggy-feeling input.

cable flexibility
Product 1: Logitech G502 X Lightspeed
3.7

Cable flexibility has limited evidence, but the one direct review describes the included rubber cable as soft and supple.

Product 2: Razer Viper V4 Pro
2.4

The included cable is serviceable for charging, but at least one review directly criticizes the wired experience. Cable feel is not treated as a strength of the package.

charging convenience
Product 1: Logitech G502 X Lightspeed
4.6

Charging convenience scores well because reviewers repeatedly highlight USB-C charging, included USB-C cabling, and easy charging between sessions.

Product 2: Razer Viper V4 Pro
3.6

Charging convenience is mixed. The strong battery life means charging is infrequent, but charging remains cable-only and lacks the ease of a docked solution.

claw grip comfort
Product 1: Logitech G502 X Lightspeed
4.2

Claw grip has limited but direct support from one review that found claw use felt good.

Product 2: Razer Viper V4 Pro
4.6

Claw grip is one of the clearest fit strengths in the reviews. Multiple outlets directly recommend the shape for claw users.

click latency
Product 1: Logitech G502 X Lightspeed
4.5

Click latency is scored highly from repeated claims of instant click registration, faster response rate, optical actuation, and reduced click latency.

Product 2: Razer Viper V4 Pro
4.9

One review explicitly cites a 0.204 ms average click latency. That supports the V4 Pro’s positioning as a very fast competitive mouse.

click noise
Product 1: Logitech G502 X Lightspeed
3.1

Click noise is mixed: one review criticized cheap, echoey click sound, while another described the switches as producing a satisfying click sound.

Product 2: Razer Viper V4 Pro
3.2

The main clicks are often described as loud, pingy, hollow, or more resonant than muted. This is one of the most common caveats in otherwise positive reviews.

connection stability
Product 1: Logitech G502 X Lightspeed
4.8

Connection stability is strong where directly discussed, with reviews reporting no lag, no dropped connections, and no issues with the 2.4GHz connection.

Product 2: Razer Viper V4 Pro
4.9

The new dongle and antenna design are repeatedly tied to stable, reliable connections. Reviewers describe the link as solid and dependable in real use.

cross-platform compatibility
Product 1: Logitech G502 X Lightspeed
3.1

Cross-platform or multi-machine use is mixed: onboard profiles help across machines, but one review reported a MacBook Air detection failure.

Product 2: Razer Viper V4 Pro
No score yet
dock compatibility
Product 1: Logitech G502 X Lightspeed
4.2

Charging-mat and PowerPlay evidence supports dock-style compatibility, with multiple reviews mentioning PowerPlay or wireless charging mat support.

Product 2: Razer Viper V4 Pro
1.5

Reviews explicitly note the absence of a dock or dock compatibility. That omission stands out because the rest of the mouse is positioned as a premium flagship.

DPI range
Product 1: Logitech G502 X Lightspeed
4.5

DPI support is consistently strong, with reviews citing on-the-fly DPI adjustment and maximum ranges around 25,600 DPI.

Product 2: Razer Viper V4 Pro
4.9

One review highlights the 50,000 DPI ceiling as a meaningful expansion of the usable adjustment range. Even when reviewers did not need that maximum, they saw the headroom as a clear spec upgrade.

durability over time
Product 1: Logitech G502 X Lightspeed
4.3

Durability evidence is positive but not extensive, with one review reporting no drop-test damage and switch design intended to reduce mechanical wear.

Product 2: Razer Viper V4 Pro
4.6

One review explicitly describes the V4 Pro as lighter and more durable than before. That supports the idea that the refinement is not just about speed, but also long-term robustness.

ecosystem integration
Product 1: Logitech G502 X Lightspeed
4.4

Ecosystem integration is a recurring advantage through shared Lightspeed receivers, Logitech keyboard pairing, and syncable lighting or audio profiles.

Product 2: Razer Viper V4 Pro
No score yet
ergonomic design
Product 1: Logitech G502 X Lightspeed
4.2

The ergonomic design is generally praised through references to thumb support, ergonomic contours, and grip-style adaptability.

Product 2: Razer Viper V4 Pro
3.8

The ergonomics are acceptable for a competitive symmetrical mouse, but not a headline strength. Reviews often contrast it with more sculpted ergonomic alternatives.

fingertip grip comfort
Product 1: Logitech G502 X Lightspeed
4.2

Fingertip comfort has limited direct evidence, but the available review says fingertip grip felt good.

Product 2: Razer Viper V4 Pro
4.6

Fingertip grip is also highlighted as a good match for the Viper V4 Pro’s low-profile symmetrical design. Reviews regularly list fingertip among the preferred grip styles.

FPS gaming suitability
Product 1: Logitech G502 X Lightspeed
3.6

FPS suitability is divided: several reviewers enjoyed aim control and low latency, while others found the weight and extra buttons less ideal for FPS players.

Product 2: Razer Viper V4 Pro
4.8

This is consistently framed as an elite FPS or competitive shooter mouse. Reviews repeatedly connect its shape, low weight, sensor, and latency profile to high-level shooter play.

glide smoothness
Product 1: Logitech G502 X Lightspeed
4.1

Glide is mostly positive, with reviewers citing PTFE feet, smooth movement on mats, and slick desk movement, though one review called stock skates merely fine.

Product 2: Razer Viper V4 Pro
4.8

Feet and skates are repeatedly praised for smooth glide and easy fast movement. Several reviews connect the glide quality to the mouse’s competitive feel.

grip texture
Product 1: Logitech G502 X Lightspeed
4.4

Grip texture is a strength where mentioned, with reviewers noting textured rubber grips, grippy side lines, and rubberized thumb areas.

Product 2: Razer Viper V4 Pro
4.7

The shell texture or coating is repeatedly praised for helping grip without feeling slippery. Matte and coated finishes are a recurring positive in day-to-day use.

handedness options
Product 1: Logitech G502 X Lightspeed
2.5

Handedness options are weak because the direct evidence describes the mouse as made for right-handed users.

Product 2: Razer Viper V4 Pro
2.0

Multiple reviews stress that this is effectively a right-handed mouse because the side buttons sit on the left side only. Left-handed flexibility is limited.

left and right click quality
Product 1: Logitech G502 X Lightspeed
4.1

Main click quality is mixed: reviews praised easy rapid clicking and reduced pre-travel, while broader click impressions included some premium-feel reservations.

Product 2: Razer Viper V4 Pro
4.6

Primary clicks are commonly praised for being sharp, tactile, and consistent across the button surface. The consensus is stronger on feel than on sound.

lift-off distance
Product 1: Logitech G502 X Lightspeed
No score yet
Product 2: Razer Viper V4 Pro
4.5

Lift-off controls and behavior are discussed directly in multiple reviews. Most describe the feature set or results positively, though one reviewer still wanted a lower default lift-off distance.

long-session comfort
Product 1: Logitech G502 X Lightspeed
4.4

Long-session comfort is strong, with reviewers citing no hand fatigue, little hand adjustment, and comfortable hold during longer use.

Product 2: Razer Viper V4 Pro
4.7

Low weight and balanced construction help reduce fatigue over long sessions. Multiple reviewers directly connect comfort over time to the mouse’s light, well-distributed design.

macro support
Product 1: Logitech G502 X Lightspeed
4.6

Macro support is clearly present through G Hub, with reviews describing program-specific macros and assigning macros to customizable buttons.

Product 2: Razer Viper V4 Pro
4.6

One review explicitly says Synapse is where users create macros. Macro support exists, but it is not a major focus of most reviews.

materials quality
Product 1: Logitech G502 X Lightspeed
3.5

Materials quality is mixed: soft-touch plastic and low fingerprinting are praised, while glossy areas and untextured smooth plastic draw criticism.

Product 2: Razer Viper V4 Pro
4.9

Material quality is described as sturdy, dense, and notably premium for such a light mouse. Reviews reject the idea that the shell feels cheap just because it is ultralight.

MMO gaming suitability
Product 1: Logitech G502 X Lightspeed
4.5

MMO suitability is one of the better-supported use cases because several reviews highlight many buttons and MMO-focused control flexibility.

Product 2: Razer Viper V4 Pro
No score yet
MOBA gaming suitability
Product 1: Logitech G502 X Lightspeed
4.3

MOBA suitability has limited direct support, but one review says MOBA players should have no trouble because the extra buttons remain unobtrusive.

Product 2: Razer Viper V4 Pro
No score yet
motion consistency
Product 1: Logitech G502 X Lightspeed
4.7

Motion consistency is supported by direct testing that found no jittering or phantom movements.

Product 2: Razer Viper V4 Pro
4.6

Movement is described as smooth and more fluid, especially when the mouse is tuned well. Reviews connect that smoothness to tracking quality and high polling support.

onboard memory
Product 1: Logitech G502 X Lightspeed
4.7

Onboard memory is consistently supported by repeated mentions of five onboard profiles and settings saved to onboard profiles.

Product 2: Razer Viper V4 Pro
4.5

One review explicitly mentions onboard profiles that can be adjusted in the browser. That suggests the mouse can hold profile data beyond a purely temporary software session.

palm grip comfort
Product 1: Logitech G502 X Lightspeed
4.2

Palm grip comfort is generally positive because reviewers repeatedly associate the shape with palm grip comfort, though reach issues remain for some hands.

Product 2: Razer Viper V4 Pro
4.1

Palm grip support is workable but not universal. Several reviewers were comfortable with it, while others preferred a more ergonomic shape or wanted more thumb-side contour.

polling rate
Product 1: Logitech G502 X Lightspeed
3.7

Polling-rate evidence is limited and mixed: 1000Hz is considered enough by one reviewer, but also behind newer higher-polling competitors.

Product 2: Razer Viper V4 Pro
4.8

True 8,000Hz polling is a recurring selling point across the reviews. Several reviewers say the higher polling rate improves smoothness or responsiveness, even if some note the benefit is strongest for competitive play.

portability
Product 1: Logitech G502 X Lightspeed
4.4

Portability is helped by onboard dongle storage, magnetic storage covers, and reviews that call the mouse a good portable option.

Product 2: Razer Viper V4 Pro
3.0

Portability is not a major strength. One review specifically says the dongle-and-cable setup is less convenient for travel than a simpler all-in-one wireless approach.

premium feel
Product 1: Logitech G502 X Lightspeed
3.3

Premium feel is mixed: some reviewers mention stylish finish, but others criticize plastic feel, glossy wear, and high-end expectations not fully met.

Product 2: Razer Viper V4 Pro
4.7

Several reviews say the mouse feels distinctly premium in hand. That impression comes from the coating, shell rigidity, and overall finish rather than flashy extras.

profile switching
Product 1: Logitech G502 X Lightspeed
4.4

Profile switching is a strength, with reviews describing easy switching, five profile support, and built-in profiles.

Product 2: Razer Viper V4 Pro
No score yet
programmable buttons
Product 1: Logitech G502 X Lightspeed
4.6

Programmable button support is one of the most repeated strengths, with reviews citing 11 to 13 programmable controls and many extra buttons.

Product 2: Razer Viper V4 Pro
4.5

Reviews confirm that the side buttons can be programmed. The mouse stays minimal on button count, but the available buttons are still treated as configurable.

RGB features
Product 1: Logitech G502 X Lightspeed
3.1

RGB is a mixed feature because it exists mainly on the Plus variant, costs extra, and can reduce battery life or add weight.

Product 2: Razer Viper V4 Pro
1.8

The lack of RGB is mentioned again and again as part of the Viper V4 Pro’s stripped-down competitive focus. Reviews frame this as a deliberate trade-off for lower weight and better battery life.

scroll wheel quality
Product 1: Logitech G502 X Lightspeed
3.5

Scroll wheel quality is highly polarized: reviewers praise free-scroll usefulness and hyperfast scrolling, but several criticize ratcheted feel, sound, or looseness.

Product 2: Razer Viper V4 Pro
4.6

The optical scroll wheel is one of the mouse’s strongest recurring positives. Reviews praise its accuracy, defined steps, and consistency, although one review found the detents too soft for precise selection.

sensor performance
Product 1: Logitech G502 X Lightspeed
4.6

Sensor performance is consistently positive through Hero 25K references, strong tracking, and zero smoothing or acceleration claims.

Product 2: Razer Viper V4 Pro
4.8

The Focus Pro 50K Gen-3 sensor is repeatedly described as accurate, fast, and technically impressive. Reviews frame it as one of the mouse’s core performance upgrades.

shape comfort
Product 1: Logitech G502 X Lightspeed
4.2

Shape comfort is broadly positive, especially for larger hands and thumb-rest users, though a few comparisons and reach issues keep it from being perfect.

Product 2: Razer Viper V4 Pro
4.6

The safe symmetrical shell is widely described as comfortable and easy to adapt to. Even reviews with ergonomic reservations still treat the shape as broadly successful.

side button quality
Product 1: Logitech G502 X Lightspeed
3.1

Side button quality is mixed because reviewers like the modular sniper button but repeatedly mention reach problems and accidental fat-fingering.

Product 2: Razer Viper V4 Pro
4.4

Side buttons are generally seen as easy to reach and unusually good for a lightweight competitive mouse. Several reviews specifically praise their tactility or usability.

software stability
Product 1: Logitech G502 X Lightspeed
2.2

Software stability is a weakness in the evidence, with reviews describing G Hub behavior going haywire or the mouse not being recognized.

Product 2: Razer Viper V4 Pro
3.9

Software behavior is mostly positive, but not flawless. Reviews praise the new web approach while also mentioning older Synapse heaviness or a web app conflict in one case.

software usability
Product 1: Logitech G502 X Lightspeed
3.3

Software usability is mixed: G Hub offers DPI, macros, and profiles, but several reviewers could not access it, could not customize fully, or called it bad.

Product 2: Razer Viper V4 Pro
4.6

Synapse Web is widely seen as a meaningful usability improvement because it makes tuning easier without a heavy install. Across the reviews, software control is generally presented as easy and full-featured.

surface compatibility
Product 1: Logitech G502 X Lightspeed
3.8

Surface compatibility is modestly positive, with reviewers reporting acceptable or smooth movement on desks and mouse mats.

Product 2: Razer Viper V4 Pro
4.8

Reviews mention reliable tracking and lift-off behavior across different surfaces. Surface handling is treated as dependable rather than finicky.

switch durability
Product 1: Logitech G502 X Lightspeed
4.5

Switch durability is supported by optical-mechanical switch design claims, reduced wear, double-click prevention, and wear-and-tear resilience.

Product 2: Razer Viper V4 Pro
4.8

Multiple reviews cite the 100 million click rating and treat the switches as built for long competitive use. Durability is framed as a real upgrade, not a throwaway spec.

switch feel
Product 1: Logitech G502 X Lightspeed
4.2

Switch feel is mostly positive for crispness and responsiveness, though one review found the clicks not especially tactile.

Product 2: Razer Viper V4 Pro
4.7

The Gen-4 optical switches are usually described as tactile, crisp, lighter to actuate, and responsive. Even reviewers who questioned the sound still tended to praise the core feel.

value for money
Product 1: Logitech G502 X Lightspeed
3.2

Value is mixed and price-sensitive: some reviews found acceptable sale pricing, while others called MSRP pricey or a worse deal against newer rivals.

Product 2: Razer Viper V4 Pro
3.5

Reviewers agree the V4 Pro performs at a premium level, but many still flag the price as hard to justify for non-competitive users. Value is strongest for buyers who specifically want top-tier lightweight FPS performance.

weight
Product 1: Logitech G502 X Lightspeed
3.1

Weight is a recurring caveat: reviewers note reductions from older versions, but also repeatedly call it heavy or not especially light by current standards.

Product 2: Razer Viper V4 Pro
4.8

Nearly every review treats the 49 to 50 gram weight as a defining advantage. The mouse is repeatedly described as feather-light, easy to move, and faster-feeling in hand.

weight tuning
Product 1: Logitech G502 X Lightspeed
1.5

Weight tuning is weak because the direct evidence says this version lacks additional weights.

Product 2: Razer Viper V4 Pro
No score yet
wireless latency
Product 1: Logitech G502 X Lightspeed
4.6

Wireless latency is strong where tested or discussed, with reviewers reporting no spikes, low-latency Lightspeed, and wired-like response.

Product 2: Razer Viper V4 Pro
4.9

Several reviews call out very low latency figures or noticeably crisp wireless response. The low-latency wireless link is a major part of the product’s competitive positioning.

wireless performance
Product 1: Logitech G502 X Lightspeed
4.6

Wireless performance is consistently strong, with reviews citing excellent wireless behavior, instant response, fast connectivity, and Logitech wireless confidence.

Product 2: Razer Viper V4 Pro
4.8

Wireless performance is broadly praised as fast, responsive, and confidence-inspiring. Reviewers often say it feels fully competitive with wired expectations.