Average score
Product 1: Logitech G915 Lightspeed
4.0
Product 2: Logitech G515 Lightspeed
4.0
acoustics
Product 1: Logitech G915 Lightspeed
3.9

The clicky sound remains clearly mechanical, but several reviewers found the overall tone less harsh than some louder full-height competitors.

Product 2: Logitech G515 Lightspeed
4.4

Reviews describe a pleasant overall sound with foam reducing ping and rattle, though one review still heard some plasticky rattle.

actuation consistency
Product 1: Logitech G915 Lightspeed
4.4

The switches make the actuation point easy to sense, and long-term use reports mention no double presses or missed behavior.

Product 2: Logitech G515 Lightspeed
4.4

One review found the switch feel reasonably consistent across all keys.

backlight brightness
Product 1: Logitech G915 Lightspeed
4.4

The backlight is bright enough to stand out in brighter rooms and includes multiple brightness levels for adjustment.

Product 2: Logitech G515 Lightspeed
3.9

Backlighting is visible and generally attractive, but brightness is not class-leading and some reviews found it dimmer than top rivals.

battery life
Product 1: Logitech G915 Lightspeed
4.5

Battery life is a clear positive, with repeated 30-hour-at-max-brightness style results and much longer endurance once lighting is reduced or idle dimming kicks in.

Product 2: Logitech G515 Lightspeed
4.2

Battery life is good rather than class-leading, with several tests clustering around the mid-30s to mid-40s hours with lighting and longer runtimes possible with power-saving settings.

build quality
Product 1: Logitech G915 Lightspeed
4.8

The board consistently comes across as premium and sturdy, with reviewers highlighting solid construction rather than a hollow or cheap-feeling shell.

Product 2: Logitech G515 Lightspeed
4.4

Despite the plastic chassis, reviews consistently describe the board as solid, sturdily built, and better made than the price might suggest.

cable quality
Product 1: Logitech G915 Lightspeed
4.0

The included charging cable is described as braided and nicely finished, though cable discussion is limited in the review set.

Product 2: Logitech G515 Lightspeed
4.3

The included USB-C cable is described as rubberized, flexible, and perfectly serviceable for charging or wired use.

compatibility
Product 1: Logitech G915 Lightspeed
4.5

Review evidence shows the G915 working across common desktop operating systems and with mobile devices over Bluetooth.

Product 2: Logitech G515 Lightspeed
4.3

Compatibility evidence includes macOS support, pairing with compatible Logitech Lightspeed devices, multi-device use, and support for aftermarket low-profile keycaps.

connectivity
Product 1: Logitech G915 Lightspeed
4.7

Connectivity is a major strength, with Lightspeed, Bluetooth, and wired charging or use all appearing in the review evidence.

Product 2: Logitech G515 Lightspeed
4.6

Tri-mode connectivity is a recurring strength, with 2.4GHz Lightspeed, Bluetooth, and wired USB-C all repeatedly confirmed.

customization options
Product 1: Logitech G915 Lightspeed
4.8

Beyond RGB alone, reviewers describe a deep overall customization stack covering effects, key assignments, macros, and presets.

Product 2: Logitech G515 Lightspeed
4.7

Customization is a major strength, with G Hub and KEYCONTROL providing deep remapping, layering, and setup flexibility beyond basic lighting tweaks.

desk space efficiency
Product 1: Logitech G915 Lightspeed
2.5

Despite the slim deck, the full-size width and extra key columns still eat noticeable desk space.

Product 2: Logitech G515 Lightspeed
4.5

The TKL layout is explicitly praised for freeing up desk space.

durability
Product 1: Logitech G915 Lightspeed
4.5

Durability feedback is strong, from impact anecdotes to long-term reports of grips and hardware holding up over time.

Product 2: Logitech G515 Lightspeed
4.7

PBT caps and, in one review, a replaceable battery help the G515 make a stronger long-term durability case than many wireless boards.

ease of switch replacement
Product 1: Logitech G915 Lightspeed
No score yet
Product 2: Logitech G515 Lightspeed
1.2

Switch replacement is limited because the switches are explicitly described as not hot-swappable.

ergonomics
Product 1: Logitech G915 Lightspeed
4.4

Low height plus adjustable feet help the keyboard sit comfortably, and reviewers describe the layout as easy to settle into.

Product 2: Logitech G515 Lightspeed
4.3

Low-profile height and adjustable tilt contribute to a comfortable, easy-to-reach typing posture.

extra gaming features
Product 1: Logitech G915 Lightspeed
4.5

Game mode, disable-key options, and macro or profile extras give the G915 more gaming-specific utility than a basic wireless keyboard.

Product 2: Logitech G515 Lightspeed
3.9

Game Mode and Logitech-specific extras are present, but some reviews still felt the board lacked more advanced gaming hardware features.

frame rigidity
Product 1: Logitech G915 Lightspeed
4.7

Even with the ultra-thin chassis, reviewers describe the frame as rigid and solid rather than flexy.

Product 2: Logitech G515 Lightspeed
4.4

Despite its slim plastic build, the frame is described as hard to bend with very little flex.

gaming performance
Product 1: Logitech G915 Lightspeed
4.4

Across written and video reviews, the G915 feels fast and accurate in games, with low-profile switches offering a slight speed edge without obvious compromises.

Product 2: Logitech G515 Lightspeed
4.3

Gaming performance is generally strong and responsive, though the board is not positioned as the most hardcore esports feature set.

hot-swappable switches
Product 1: Logitech G915 Lightspeed
No score yet
Product 2: Logitech G515 Lightspeed
1.2

Multiple reviews explicitly note that the switches are not hot-swappable.

keycap quality
Product 1: Logitech G915 Lightspeed
3.5

Keycap impressions are mixed: some praise the coating and molding, while long-term users call them wobbly, small, or prone to visible wear.

Product 2: Logitech G515 Lightspeed
4.3

Double-shot PBT keycaps are a repeated highlight for texture, grip, and durability, though some reviewers still criticized flatness, looseness, or smoothness.

key responsiveness
Product 1: Logitech G915 Lightspeed
4.5

The low-profile switches are repeatedly described as speedy and responsive, with fast registration that suits both gaming and quick general use.

Product 2: Logitech G515 Lightspeed
4.5

Short-travel switches and responsive action make inputs feel quick across both work and gaming.

key spacing
Product 1: Logitech G915 Lightspeed
3.1

The smaller, closely packed low-profile keycaps can lead to accidental adjacent-key presses until you adapt.

Product 2: Logitech G515 Lightspeed
4.1

Key spacing is described as familiar and close to a standard ANSI layout, which eases adaptation.

key stability
Product 1: Logitech G915 Lightspeed
4.0

Although one review mentions some wiggle when keys are deliberately moved, it still reports a stable base during actual typing.

Product 2: Logitech G515 Lightspeed
3.9

Key stability is mostly positive, with some reviews praising minimal wobble and others noting more movement than ideal.

latency
Product 1: Logitech G915 Lightspeed
4.5

Lightspeed input delay is effectively absent in review use, with reviewers saying it feels immediate or imperceptible in practice.

Product 2: Logitech G515 Lightspeed
4.4

2.4GHz Lightspeed is repeatedly described as low-latency or lag-free, while Bluetooth carries the usual latency penalty.

layout options
Product 1: Logitech G915 Lightspeed
3.1

The review set mainly describes a full-size, macro-heavy layout rather than a broad range of built-in layout variants.

Product 2: Logitech G515 Lightspeed
4.2

The board sticks to a familiar TKL layout rather than offering alternate size variants, and reviewers found that layout practical and easy to learn.

legend visibility
Product 1: Logitech G915 Lightspeed
2.7

Main legends are readable and shine through, but secondary characters or smaller legends are a recurring weakness.

Product 2: Logitech G515 Lightspeed
4.0

Shine-through legends are generally easy to read, but a few reviews noted uneven illumination or incomplete legend coverage on some keys.

macro customization
Product 1: Logitech G915 Lightspeed
4.6

Macro support is a standout feature, with programmable G keys and even on-board recording in the review evidence.

Product 2: Logitech G515 Lightspeed
4.7

Macro and layer functionality is deep, with several reviews highlighting the ability to assign up to 15 functions per key.

materials quality
Product 1: Logitech G915 Lightspeed
4.5

Materials feel upscale for a gaming keyboard, with recurring mentions of aluminum surfaces paired with sturdy plastic reinforcement.

Product 2: Logitech G515 Lightspeed
4.3

Materials quality lands above expectations for the price, with sturdy plastics and a generally premium-feeling finish.

media controls
Product 1: Logitech G915 Lightspeed
4.4

Dedicated media buttons are consistently viewed as a genuine convenience rather than a throw-in extra.

Product 2: Logitech G515 Lightspeed
2.8

Media functions exist, but mostly as secondary Fn commands rather than dedicated hardware controls.

noise level
Product 1: Logitech G915 Lightspeed
3.2

Noise depends on switch choice, but the clicky version is still loud enough to be questionable in shared spaces despite being quieter than some rivals.

Product 2: Logitech G515 Lightspeed
4.3

The board is repeatedly described as quiet or audibly muted for a mechanical keyboard.

onboard memory
Product 1: Logitech G915 Lightspeed
4.2

Onboard memory is present for saving profiles or settings directly to the keyboard, reducing dependence on software after setup.

Product 2: Logitech G515 Lightspeed
4.6

Onboard or built-in memory is confirmed for storing settings, profiles, or lighting when moving between systems.

passthrough features
Product 1: Logitech G915 Lightspeed
1.0

The G915 does not include USB passthrough, and that missing feature is explicitly called out.

Product 2: Logitech G515 Lightspeed
1.0

One review explicitly notes the absence of a USB passthrough port.

per-key lighting control
Product 1: Logitech G915 Lightspeed
4.5

Review evidence supports granular lighting control, including direct per-key programming and custom schemes through G Hub.

Product 2: Logitech G515 Lightspeed
4.6

Per-key RGB control is directly supported through Logitech software.

polling rate
Product 1: Logitech G915 Lightspeed
4.5

Two reviews explicitly call out the fast wireless report rate, citing 1ms or 1,000Hz behavior consistent with premium gaming boards.

Product 2: Logitech G515 Lightspeed
4.5

One review explicitly confirms a 1,000 Hz wireless polling rate.

portability
Product 1: Logitech G915 Lightspeed
3.3

The keyboard benefits from being slim and cordless, but its full-size footprint keeps it from being especially travel-friendly.

Product 2: Logitech G515 Lightspeed
4.3

The slim TKL shape, dongle storage, and travel-friendly framing make the keyboard easy to carry and use in tighter spaces.

profile management
Product 1: Logitech G915 Lightspeed
4.4

The keyboard supports multiple profiles and app-linked behavior, though some setup paths in software can be a little confusing.

Product 2: Logitech G515 Lightspeed
4.5

Reviews describe multiple profiles, presets, community profile sharing, or per-program configs, giving the board solid profile-management flexibility.

rapid trigger support
Product 1: Logitech G915 Lightspeed
No score yet
Product 2: Logitech G515 Lightspeed
1.0

A review explicitly flags the absence of rapid-trigger-style features.

reliability
Product 1: Logitech G915 Lightspeed
4.5

Longer-term reports are encouraging, with no key failures mentioned and the board continuing to function properly over time.

Product 2: Logitech G515 Lightspeed
4.6

Connection stability and day-to-day reliability are called out as strong.

RGB customization
Product 1: Logitech G915 Lightspeed
4.8

RGB customization is a strength, with broad effect choices and enough flexibility to create game- or mood-specific lighting setups.

Product 2: Logitech G515 Lightspeed
4.5

G Hub allows custom RGB effects and animations rather than limiting users to presets alone.

RGB lighting quality
Product 1: Logitech G915 Lightspeed
4.0

Lighting is generally vivid and bright, but several reviewers also note light bleed and less-than-perfect sharpness around the keys.

Product 2: Logitech G515 Lightspeed
4.0

RGB looks clean and appealing overall, but several reviews note uneven legends or less-than-ideal consistency across the lighting.

size and form factor
Product 1: Logitech G915 Lightspeed
3.7

The G915 is impressively thin for a wireless mechanical board, but the full-size body keeps it from feeling compact overall.

Product 2: Logitech G515 Lightspeed
4.6

The 22mm-tall low-profile TKL form factor is one of the keyboard’s clearest strengths.

software quality
Product 1: Logitech G915 Lightspeed
4.3

G Hub is usually praised for broad features and usability, but not every reviewer found the profile or onboard-memory flow intuitive.

Product 2: Logitech G515 Lightspeed
4.6

G Hub is broadly seen as capable and feature-rich, with strong programming tools, though some reviews imply a learning curve.

sound dampening
Product 1: Logitech G915 Lightspeed
No score yet
Product 2: Logitech G515 Lightspeed
4.4

Foam and layered dampening are repeatedly cited as meaningful contributors to the quieter sound.

stabilizer quality
Product 1: Logitech G915 Lightspeed
No score yet
Product 2: Logitech G515 Lightspeed
4.5

Direct stabilizer evidence is positive, with one review saying they do their job well and keep wobble low on larger keys.

switch feel
Product 1: Logitech G915 Lightspeed
4.4

Reviewers describe the GL switches as pleasant and buttery once adjusted, with low-profile travel that still feels distinct rather than mushy.

Product 2: Logitech G515 Lightspeed
4.6

Switch feel is generally praised as tactile, smooth, and satisfying for a low-profile board.

switch options
Product 1: Logitech G915 Lightspeed
4.5

Multiple reviews note three switch choices—clicky, tactile, and linear—giving buyers real feel options instead of a one-switch lineup.

Product 2: Logitech G515 Lightspeed
4.3

Buyers get tactile or linear switch choices, but the scored reviews do not support a third clicky option.

typing comfort
Product 1: Logitech G915 Lightspeed
4.1

Typing comfort is generally strong, especially once adjusted to the low-profile design, though a few reviewers reported an initial accuracy penalty.

Product 2: Logitech G515 Lightspeed
4.5

Typing comfort is consistently strong once users adjust to the low-profile form factor.

typing feel
Product 1: Logitech G915 Lightspeed
4.4

Typing feels smoother and more laptop-like than on a traditional tall mechanical board, which some reviewers ended up preferring.

Product 2: Logitech G515 Lightspeed
4.7

Typing feel is a standout, with reviewers describing it as fast, satisfying, and productive.

value for money
Product 1: Logitech G915 Lightspeed
2.3

Most reviewers love the feature set but still treat the price as the biggest barrier, especially versus cheaper wired alternatives.

Product 2: Logitech G515 Lightspeed
4.1

Value is viewed as good but not unbeatable, with a lower price than pricier Logitech low-profile models offset by a few compromises.

volume control
Product 1: Logitech G915 Lightspeed
4.4

The volume wheel is widely praised for feel and convenience, although one review noticed some lag in on-screen response.

Product 2: Logitech G515 Lightspeed
1.9

Volume adjustment exists through secondary keys, but the missing dial or dedicated controls is a recurring complaint.

wireless performance
Product 1: Logitech G915 Lightspeed
4.4

Lightspeed wireless performance is usually described as wired-like and reliable, though one long-term user reported poor range without careful dongle placement.

Product 2: Logitech G515 Lightspeed
4.6

Lightspeed wireless performance is one of the product’s most consistent strengths, with repeated praise for stability and wired-like behavior.

wrist rest quality
Product 1: Logitech G915 Lightspeed
1.4

There is no included wrist rest, which reviewers repeatedly flag as a miss at this price even if the low profile reduces the need somewhat.

Product 2: Logitech G515 Lightspeed
1.5

There is no included wrist rest, and several reviews mention that absence as a drawback even if the low profile reduces the need.