Average score
Product 1: GravaStar Mercury V75 Pro
4.1
Product 2: Corsair K65 Plus
4.3
acoustics
Product 1: GravaStar Mercury V75 Pro
4.2

Reviewers describe the sound as clacky and generally pleasing, with one noting it is louder and more direct while others call it clean or good sounding.

Product 2: Corsair K65 Plus
4.6

Reviews describe the K65 Plus as acoustically refined, with softer, rounder sound than typical gaming boards.

actuation consistency
Product 1: GravaStar Mercury V75 Pro
4.4

Actuation and switch behavior are consistently portrayed as precise and responsive, with stable performance, accurate registration, and rapid actuation/deactivation noted across multiple reviews.

Product 2: Corsair K65 Plus
4.0

One review says the keys travel smoothly with little variance, supporting generally consistent actuation.

backlight brightness
Product 1: GravaStar Mercury V75 Pro
4.6

Brightness is strong where discussed, with reviewers calling the RGB bright and highlighting brightness controls in the web driver.

Product 2: Corsair K65 Plus
4.2

Backlighting is bright enough to stand out well around the keycaps, even though legends do not shine through.

battery life
Product 1: GravaStar Mercury V75 Pro
No score yet
Product 2: Corsair K65 Plus
4.4

Battery life is a clear strength, with multiple reviewers getting days to weeks depending on lighting use.

build quality
Product 1: GravaStar Mercury V75 Pro
4.6

Build quality is one of the keyboard's strongest areas, repeatedly described as sturdy, heavy, well-built, high quality, and aluminum-based.

Product 2: Corsair K65 Plus
4.8

Build quality is repeatedly praised for sturdy construction, hefty feel, and a premium overall impression.

cable quality
Product 1: GravaStar Mercury V75 Pro
2.2

The included cable is a weak point in the one review that discusses it, because it is a plain rubber USB cable rather than a braided cable.

Product 2: Corsair K65 Plus
4.3

The included USB-C cable is described as braided, long enough for typical setups, and easy to disconnect.

compatibility
Product 1: GravaStar Mercury V75 Pro
4.0

Compatibility is generally positive for keycaps, Windows/Mac use, and select magnetic switch replacements, though switch compatibility still requires checking supported TTC and Gateron models.

Product 2: Corsair K65 Plus
4.8

Compatibility is broad, with repeated support for Windows, Mac, and multiple console or mobile use cases.

connectivity
Product 1: GravaStar Mercury V75 Pro
2.2

Connectivity is limited because the keyboard is wired-only; reviewers treat the wired setup as functional but restrictive.

Product 2: Corsair K65 Plus
4.8

Connectivity is a major highlight thanks to wired, 2.4GHz, and Bluetooth modes plus easy multi-device switching.

customization options
Product 1: GravaStar Mercury V75 Pro
4.5

Customization is broad, especially around actuation, rapid trigger, lighting, remapping, profiles, and Hall effect features through the web-based driver.

Product 2: Corsair K65 Plus
4.8

Customization is extensive, covering hot-swap hardware changes, remapping, lighting, and other programmable behaviors.

desk space efficiency
Product 1: GravaStar Mercury V75 Pro
4.1

The 75% layout saves space versus full-size boards by dropping the numpad and full navigation cluster while retaining arrows and useful keys.

Product 2: Corsair K65 Plus
4.8

The 75% footprint noticeably frees desk space, especially for mouse movement and tighter workstations.

durability
Product 1: GravaStar Mercury V75 Pro
4.5

Durability evidence is positive, with reviewers pointing to heavy-duty construction, high-quality materials, and long switch lifespan claims.

Product 2: Corsair K65 Plus
4.7

Durability impressions are strong, with sturdy construction, durable caps, and long switch lifespan claims noted.

ease of switch replacement
Product 1: GravaStar Mercury V75 Pro
4.7

Switch replacement is easy where discussed, because the Hall effect switches are hot-swappable and do not require soldering.

Product 2: Corsair K65 Plus
4.6

Switch replacement is generally easy thanks to hot-swap support and included tools, though sockets can feel tight.

ergonomics
Product 1: GravaStar Mercury V75 Pro
4.1

Ergonomics are helped by adjustable feet or folding legs that change typing angle, though one reviewer found the feet visually unusual.

Product 2: Corsair K65 Plus
4.1

Ergonomics are mostly positive, especially at lower angles, but comfort can depend on setup and wrist support.

extra gaming features
Product 1: GravaStar Mercury V75 Pro
4.6

Extra gaming features are a major strength, with rapid trigger, SOCD/LKP, DKS, mod-tap, profile switching, and advanced Hall effect functions cited.

Product 2: Corsair K65 Plus
4.4

Gaming extras include full key rollover, anti-ghosting, and lockout shortcuts that help avoid accidental interruptions.

frame rigidity
Product 1: GravaStar Mercury V75 Pro
4.6

Frame rigidity is strong, with reviews emphasizing a heavy-duty aluminum or metal case, sturdy feel, and high-quality construction.

Product 2: Corsair K65 Plus
4.7

Reviewers describe the frame as rigid and low-flex, with enough heft to stay planted during use.

gaming performance
Product 1: GravaStar Mercury V75 Pro
4.5

Gaming performance is consistently rated highly, with reviewers reporting smooth play, strong FPS performance, no obvious performance complaints, and fast response.

Product 2: Corsair K65 Plus
4.6

Gaming performance is strong overall, with fast input feel and good control, though one review found it less standout than rivals.

hot-swappable switches
Product 1: GravaStar Mercury V75 Pro
4.6

Hot-swap support is clearly present where reviewed, letting users swap compatible magnetic switches without soldering.

Product 2: Corsair K65 Plus
4.9

Hot-swap support is one of the keyboard’s headline features and is praised across multiple reviews.

keycap quality
Product 1: GravaStar Mercury V75 Pro
4.0

Keycap quality is mixed: several reviews praise the PBT/PC materials and durability, while Tom's Guide strongly disliked the rough paint-like texture.

Product 2: Corsair K65 Plus
4.2

Keycaps earn praise for material and feel, though some reviews note the single-shot, non-shine-through design as a compromise.

key responsiveness
Product 1: GravaStar Mercury V75 Pro
4.5

Key responsiveness is a major strength, with reviewers describing instant key presses, feather-touch activation, ultra-fast response, and rapid registration.

Product 2: Corsair K65 Plus
4.7

Key response is consistently described as quick, clear, and dependable in both gaming and typing scenarios.

key spacing
Product 1: GravaStar Mercury V75 Pro
4.3

Key spacing and navigation are mostly positive, with reviewers finding arrows and extra keys easy to locate and useful in the 75% layout.

Product 2: Corsair K65 Plus
4.5

The layout feels well spaced for a compact board, keeping keys usable without feeling overly cramped.

key stability
Product 1: GravaStar Mercury V75 Pro
4.6

Key stability is directly praised in one review, which notes stable switches with minimal wiggle or wobble.

Product 2: Corsair K65 Plus
4.5

Key stability is good, with low switch wobble and sturdier large keys than many typical gaming keyboards.

latency
Product 1: GravaStar Mercury V75 Pro
4.4

Latency performance is strong across gaming-focused reviews, with several noting no lag, low latency, or very fast measured results.

Product 2: Corsair K65 Plus
4.8

Latency is effectively a non-issue in use, with reviewers calling wired and wireless input lag-free or unnoticeable.

layout options
Product 1: GravaStar Mercury V75 Pro
4.1

Layout options are solid around the 75% form factor, variants, and configurations, though users wanting larger boards or numpads may still be limited.

Product 2: Corsair K65 Plus
4.0

Layout flexibility is decent, with mention of ANSI/ISO availability and quick Windows or Mac layout switching.

legend visibility
Product 1: GravaStar Mercury V75 Pro
4.4

Legend visibility is positive where discussed, with one reviewer noting the large themed legends remain very legible.

Product 2: Corsair K65 Plus
3.3

Legend visibility is acceptable in good light, but opaque caps make dark-room use noticeably harder.

macro customization
Product 1: GravaStar Mercury V75 Pro
3.2

Macro customization is mixed: one review says the web software can record macros, while another found no macro recording function at the time of testing.

Product 2: Corsair K65 Plus
4.6

Macro support is solid through iCUE, with reviewers noting macro recording, remapping, and other programmable actions.

materials quality
Product 1: GravaStar Mercury V75 Pro
4.5

Materials quality is high, with repeated references to aluminum alloy, metal, full aluminum case construction, and sturdy high-quality materials.

Product 2: Corsair K65 Plus
4.2

Material quality is good for the price, though several reviews still call out the plastic shell as a compromise.

media controls
Product 1: GravaStar Mercury V75 Pro
4.1

Media controls are present through a volume knob or lever, including mute behavior, though it is not always a traditional rolling knob.

Product 2: Corsair K65 Plus
4.3

Media control coverage is good, led by the multifunction dial and secondary media shortcuts on the keyboard.

noise level
Product 1: GravaStar Mercury V75 Pro
4.0

Noise level leans clacky and noticeable rather than silent, but reviewers generally describe the sound as acceptable or good rather than harsh.

Product 2: Corsair K65 Plus
4.6

Noise levels are low for a mechanical board, with several reviewers calling the K65 Plus quiet or subdued.

onboard memory
Product 1: GravaStar Mercury V75 Pro
4.0

Onboard profile support is only lightly evidenced, with one review mentioning onboard presets and profiles.

Product 2: Corsair K65 Plus
4.5

Onboard memory is useful, with reviewers noting stored settings and space for multiple saved profiles.

per-key lighting control
Product 1: GravaStar Mercury V75 Pro
4.6

Lighting control is strong, with per-key RGB, backlighting, side lighting, and lighting controls noted across reviews.

Product 2: Corsair K65 Plus
3.9

Per-key lighting control exists and can be programmed in software, though one review notes wireless limitations.

polling rate
Product 1: GravaStar Mercury V75 Pro
4.4

Polling rate is a high-spec strength, with multiple reviews citing or testing 8,000Hz polling, though one reviewer considered it more marketing than noticeable.

Product 2: Corsair K65 Plus
3.9

The 1,000Hz polling rate is viewed as fast enough for most use, but not cutting-edge for competitive buyers.

portability
Product 1: GravaStar Mercury V75 Pro
2.6

Portability is a weakness because the board is heavy, wired-only, and visually or physically bulky despite its 75% layout.

Product 2: Corsair K65 Plus
3.6

Portability is mixed: the compact footprint travels well, but the board’s weight makes it less ideal for constant carry.

profile management
Product 1: GravaStar Mercury V75 Pro
3.9

Profile management is supported through presets and easy profile switching, though some layer behavior was described as limited or imperfect.

Product 2: Corsair K65 Plus
4.4

Profile management is flexible, with multiple onboard profiles and software-based profile creation or switching.

rapid trigger support
Product 1: GravaStar Mercury V75 Pro
4.7

Rapid trigger support is a core strength, appearing repeatedly with fine adjustment ranges and advanced Hall effect behavior.

Product 2: Corsair K65 Plus
No score yet
reliability
Product 1: GravaStar Mercury V75 Pro
4.2

Reliability is generally positive where discussed, with the keyboard feeling durable and a reviewer reporting no major issues, though minor double-clicking was noted as fixable.

Product 2: Corsair K65 Plus
4.6

Reliability is strong in actual use, with reviewers reporting stable operation and dependable wireless behavior.

RGB customization
Product 1: GravaStar Mercury V75 Pro
4.5

RGB customization is extensive, with web software controls for lighting effects, colors, brightness, side lighting, and custom lighting behavior.

Product 2: Corsair K65 Plus
4.2

RGB customization is broad, with many effects and presets available, though one review calls wireless customization limited.

RGB lighting quality
Product 1: GravaStar Mercury V75 Pro
4.6

RGB lighting quality is a standout feature, with praise for underglow, side lighting, bright effects, leg lighting, and the visual glow through translucent keycaps.

Product 2: Corsair K65 Plus
4.6

RGB lighting quality is generally praised for rich color and strong visibility around the keys.

size and form factor
Product 1: GravaStar Mercury V75 Pro
4.0

The 75% form factor is generally practical, balancing desk space and function keys, but some users may prefer smaller travel boards or larger layouts.

Product 2: Corsair K65 Plus
4.7

The 75% form factor is widely praised for balancing compact size with useful navigation and function keys.

software quality
Product 1: GravaStar Mercury V75 Pro
4.2

Software quality is mostly positive because the web driver is easy and feature-rich, but some reviews mention early quirks, language issues, or missing macro support.

Product 2: Corsair K65 Plus
4.4

iCUE is generally considered capable and easy to use, though some functions remain more limited than enthusiasts may want.

sound dampening
Product 1: GravaStar Mercury V75 Pro
4.4

Sound dampening is well supported by foam layers, dampening pads, and case design that reviewers connect to a cleaner clacky sound.

Product 2: Corsair K65 Plus
4.8

Dual sound-dampening layers are repeatedly credited for the quieter, fuller sound signature.

stabilizer quality
Product 1: GravaStar Mercury V75 Pro
4.5

Stabilizers are positively described in the reviews that mention them, with reduced rattling/pinging and good stabilizer sound.

Product 2: Corsair K65 Plus
4.3

Stabilizers are better than past Corsair efforts, reducing wobble and rattle, though tuning is not flawless everywhere.

switch feel
Product 1: GravaStar Mercury V75 Pro
4.4

Switch feel is generally praised as light, smooth, stable, and pleasant, though switch choice is limited to linear Hall effect options.

Product 2: Corsair K65 Plus
4.7

Switch feel is a major strength, with reviewers calling the stock MLX Reds smooth, soft, and satisfying.

switch options
Product 1: GravaStar Mercury V75 Pro
2.6

Switch options are limited, especially for stock switch choice and for users who want tactile or clicky switches rather than linear magnetic switches.

Product 2: Corsair K65 Plus
2.2

Stock switch choice is limited because the keyboard ships only with linear MLX Reds unless you swap later.

typing comfort
Product 1: GravaStar Mercury V75 Pro
4.2

Typing comfort is decent to good: reviewers liked the light switches and daily-use feel, though some disliked keycap texture or sensitivity settings.

Product 2: Corsair K65 Plus
4.6

Typing comfort is a standout, with several reviewers calling the board comfortable even over long sessions.

typing feel
Product 1: GravaStar Mercury V75 Pro
4.1

Typing feel is generally good or smooth, helped by light switches and sound tuning, but not every reviewer considered it great due to keycap texture or sensitivity.

Product 2: Corsair K65 Plus
4.7

Typing feel is widely praised for feeling premium, smooth, and enjoyable across work and play.

value for money
Product 1: GravaStar Mercury V75 Pro
3.6

Value for money is divisive: several reviewers find the premium build and design worth it, while Tom's Guide and another reviewer argue cheaper competitors offer better value.

Product 2: Corsair K65 Plus
4.1

Value is generally good for the feature set, though not every reviewer thinks it clearly beats cheaper alternatives.

volume control
Product 1: GravaStar Mercury V75 Pro
4.1

Volume control is useful and repeatedly noted, using a knob or lever that can adjust volume and often mute.

Product 2: Corsair K65 Plus
4.5

Volume control is convenient through the top-right dial, which defaults to volume and mute behavior.

wireless performance
Product 1: GravaStar Mercury V75 Pro
1.4

Wireless performance is a clear weakness because the keyboard has no Bluetooth or 2.4GHz wireless mode and is wired-only.

Product 2: Corsair K65 Plus
4.7

Wireless performance is a clear strength, with stable, lag-free behavior reported across multiple reviews.

wrist rest quality
Product 1: GravaStar Mercury V75 Pro
No score yet
Product 2: Corsair K65 Plus
1.7

Wrist rest quality is the weakest area because reviewers repeatedly note that no wrist rest is included.