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

Product 2: 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.

actuation consistency
Product 1: Logitech G515 Lightspeed
4.4

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

Product 2: 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.

backlight brightness
Product 1: 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.

Product 2: Logitech G915 Lightspeed
4.4

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

battery life
Product 1: 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.

Product 2: 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.

build quality
Product 1: 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.

Product 2: 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.

cable quality
Product 1: Logitech G515 Lightspeed
4.3

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

Product 2: 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.

compatibility
Product 1: 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.

Product 2: Logitech G915 Lightspeed
4.5

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

connectivity
Product 1: Logitech G515 Lightspeed
4.6

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

Product 2: Logitech G915 Lightspeed
4.7

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

customization options
Product 1: 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.

Product 2: Logitech G915 Lightspeed
4.8

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

desk space efficiency
Product 1: Logitech G515 Lightspeed
4.5

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

Product 2: Logitech G915 Lightspeed
2.5

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

durability
Product 1: 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.

Product 2: Logitech G915 Lightspeed
4.5

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

ease of switch replacement
Product 1: Logitech G515 Lightspeed
1.2

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

Product 2: Logitech G915 Lightspeed
No score yet
ergonomics
Product 1: Logitech G515 Lightspeed
4.3

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

Product 2: 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.

extra gaming features
Product 1: 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.

Product 2: 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.

frame rigidity
Product 1: Logitech G515 Lightspeed
4.4

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

Product 2: Logitech G915 Lightspeed
4.7

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

gaming performance
Product 1: 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.

Product 2: 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.

hot-swappable switches
Product 1: Logitech G515 Lightspeed
1.2

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

Product 2: Logitech G915 Lightspeed
No score yet
keycap quality
Product 1: 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.

Product 2: 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.

key responsiveness
Product 1: Logitech G515 Lightspeed
4.5

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

Product 2: 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.

key spacing
Product 1: Logitech G515 Lightspeed
4.1

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

Product 2: Logitech G915 Lightspeed
3.1

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

key stability
Product 1: Logitech G515 Lightspeed
3.9

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

Product 2: 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.

latency
Product 1: Logitech G515 Lightspeed
4.4

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

Product 2: Logitech G915 Lightspeed
4.5

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

layout options
Product 1: 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.

Product 2: 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.

legend visibility
Product 1: 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.

Product 2: Logitech G915 Lightspeed
2.7

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

macro customization
Product 1: 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.

Product 2: Logitech G915 Lightspeed
4.6

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

materials quality
Product 1: Logitech G515 Lightspeed
4.3

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

Product 2: Logitech G915 Lightspeed
4.5

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

media controls
Product 1: Logitech G515 Lightspeed
2.8

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

Product 2: Logitech G915 Lightspeed
4.4

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

noise level
Product 1: Logitech G515 Lightspeed
4.3

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

Product 2: 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.

onboard memory
Product 1: Logitech G515 Lightspeed
4.6

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

Product 2: Logitech G915 Lightspeed
4.2

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

passthrough features
Product 1: Logitech G515 Lightspeed
1.0

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

Product 2: Logitech G915 Lightspeed
1.0

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

per-key lighting control
Product 1: Logitech G515 Lightspeed
4.6

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

Product 2: Logitech G915 Lightspeed
4.5

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

polling rate
Product 1: Logitech G515 Lightspeed
4.5

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

Product 2: 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.

portability
Product 1: 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.

Product 2: 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.

profile management
Product 1: Logitech G515 Lightspeed
4.5

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

Product 2: 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.

rapid trigger support
Product 1: Logitech G515 Lightspeed
1.0

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

Product 2: Logitech G915 Lightspeed
No score yet
reliability
Product 1: Logitech G515 Lightspeed
4.6

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

Product 2: Logitech G915 Lightspeed
4.5

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

RGB customization
Product 1: Logitech G515 Lightspeed
4.5

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

Product 2: 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.

RGB lighting quality
Product 1: 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.

Product 2: 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.

size and form factor
Product 1: Logitech G515 Lightspeed
4.6

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

Product 2: 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.

software quality
Product 1: 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.

Product 2: 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.

sound dampening
Product 1: Logitech G515 Lightspeed
4.4

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

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

Product 2: Logitech G915 Lightspeed
No score yet
switch feel
Product 1: Logitech G515 Lightspeed
4.6

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

Product 2: 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.

switch options
Product 1: Logitech G515 Lightspeed
4.3

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

Product 2: 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.

typing comfort
Product 1: Logitech G515 Lightspeed
4.5

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

Product 2: 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.

typing feel
Product 1: Logitech G515 Lightspeed
4.7

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

Product 2: 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.

value for money
Product 1: 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.

Product 2: 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.

volume control
Product 1: Logitech G515 Lightspeed
1.9

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

Product 2: 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.

wireless performance
Product 1: 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.

Product 2: 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.

wrist rest quality
Product 1: 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.

Product 2: 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.