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Logitech G915 X LIGHTSPEED vs Redragon K521-R 104-Key Wired Membrane Gaming Keyboard

A

Product A: Logitech

G915 X LIGHTSPEED

76 of 164 known

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B

Product B: Redragon

K521-R 104-Key Wired Membrane Gaming Keyboard

46 of 164 known

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Every value links to where we found it.

Only differences

ALogitech G915 X LIGHTSPEED

BRedragon K521-R 104-Key Wired Membrane Gaming Keyboard

General

5 of 9 differ

Series

G915 X5Press releases24.q4cdn.com/131595232/files/doc_news/2024/09/G915-X-PRESS-RELEASE-FINAL-1.pdfRead 30 September 2026The G915 X Series has a full-size LIGHTSPEED, a LIGHTSPEED TKL and a wired model. The TKL and wired models are separate products

Not available

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

YR0069, 920-012696, 920-012704, 920-012670, 920-012685, 920-012697, 920-012705, 920-012671, 920-012706, 920-012672, 920-012673, 920-012707, 920-012674, 920-012708, 920-012675, 920-012677, 920-012679, 920-012698, 920-012709, 920-012676, 920-012686, 920-012687, 920-012688, 920-012689, 920-012690, 920-012682, G915WLX-TCBK, 920-012693, G915WLX-TCWH, 920-012701, G915WLX-LNBK, 920-012712, G915WLX-CKBK1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026Part numbers from the US page (4) and the UK page en-gb (20). YR0069 is the keyboard's regulatory model number from the support spec page2Maker product pagelogitechg.com/en-gb/shop/p/g915-x-wireless-mechanical-gaming-keyboardRead 30 September 20263Maker product pagesupport.logi.com/hc/en-us/articles/25605931386007-Specification-G915-X-LIGHTSPEEDRead 30 September 2026"Keyboard YR0069", receiver CU002111Press releasepress.logicool.co.jp/ja-jp/g915x-pro-x-tkl-rapidRead 30 September 2026

K521-R1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Product name Redragon K521-R 104-Key Wired Membrane Gaming Keyboard. Amazon calls the same listing K521, with model number K521.

GTIN / EAN

097855195166, 097855195029, 097855195005, 0978551949929Retailer pagebhphotovideo.com/c/product/1851732-REG/logitech_g_920_012670_g915_x_lightspeed_low_profile.htmlRead 30 September 2026Exact 920-012670 product page UPC 097855195005. Other original codes appeared in search excerpts but full source was unavailable.10Retailer pageadorama.com/logitech-g915-x-lightspeed-wireless-gaming-keyboard/p/lo920012704Read 30 September 2026Indexed UPC Codes table: black GL Red 097855195166, black GL Blue 097855195029, white GL Brown 097855194992. Black tactile 097855195005 is separately confirmed at B&H. Full Adorama page returned 403 and was not retried.

69503767253702Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboard.jsRead 23 October 2026Store product data: the one US variant has barcode 6950376725370.

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

17 September 20245Press releases24.q4cdn.com/131595232/files/doc_news/2024/09/G915-X-PRESS-RELEASE-FINAL-1.pdfRead 30 September 2026Logi Play, Paris and Shanghai, September 17th, 2024

Not available

Status

Available1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026US page shows $259.99 with add to cart. The price was raised after launch, the launch MSRP is in the press release

Available3Retailer pageamazon.com/dp/B0DRFGNWV1Read 23 October 2026Amazon shows In Stock at 15.99 USD with 4K+ bought in the past month. Sold by Redragon Official. The maker store page shows Sold Out for the same board.

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Not available

Not available

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

Not available

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

$229.995Press releases24.q4cdn.com/131595232/files/doc_news/2024/09/G915-X-PRESS-RELEASE-FINAL-1.pdfRead 30 September 2026"The G915 X LIGHTSPEED full-size keyboard (LINEAR, TACTILE & CLICKY) - US MSRP $229.99"

Not available

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

Not available

Not available

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

US, GB, JP1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026Sold on the Logitech G US and UK stores2Maker product pagelogitechg.com/en-gb/shop/p/g915-x-wireless-mechanical-gaming-keyboardRead 30 September 202611Press releasepress.logicool.co.jp/ja-jp/g915x-pro-x-tkl-rapidRead 30 September 2026

US1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Store page ships to US and the variant is US.

ColoursiThe maker's own colour names

Black, White1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 20265Press releases24.q4cdn.com/131595232/files/doc_news/2024/09/G915-X-PRESS-RELEASE-FINAL-1.pdfRead 30 September 2026"All wireless options are black and white"

Black3Retailer pageamazon.com/dp/B0DRFGNWV1Read 23 October 2026Item details: Color Black, Style Classic. The listing also sells other styles in other prices and layouts that are not this model. The Redragon store page links to this ASIN. Seller is Redragon Official.

Segment

Gaming1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026Listed under Gaming Keyboards

Gaming1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Specification: Product Category Gaming Keyboard.

Sold asiParts fitted when sold. A complete keyboard includes switches and keycaps. Barebones includes neither.

Complete1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026Sold with GL switches and keycaps fitted, in Linear, Clicky and Tactile styles

Complete1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Sold fully assembled with membrane keys.

Layout

6 of 12 differ

Form factoriLayout size or shape. A percentage describes the layout, not the number of keys.

Full size1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 20264Owner's manuallogitech.com/assets/70208/g915_x_lightspeed_qsg_amr.pdfRead 30 September 2026English setup guide pages 3-5 show the complete full-size keyboard with numeric keypad and nine G keys. It is not the separate TKL model.

Full size1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Specification: Number of keys 104. Collection: Full-size Keyboards.

Layout standardiPhysical key layout standards sold for this model. Regional language names are listed separately.

ANSI, ISO, JIS11Press releasepress.logicool.co.jp/ja-jp/g915x-pro-x-tkl-rapidRead 30 September 2026

ANSI1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Maker photo: horizontal Enter, long left Shift and a backslash key above Enter. That is ANSI.

Regional layouts

English US (QWERTY), German (QWERTZ), French (AZERTY), Swiss (QWERTZ), Nordic (QWERTY), English UK (QWERTY), Spanish (QWERTY), Italian (QWERTY), English International (QWERTY), Japanese1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026Layout names from the US and UK pages, verbatim2Maker product pagelogitechg.com/en-gb/shop/p/g915-x-wireless-mechanical-gaming-keyboardRead 30 September 202611Press releasepress.logicool.co.jp/ja-jp/g915x-pro-x-tkl-rapidRead 30 September 2026

US1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Variant name US.

Keys in regional layoutiPhysical typing and function keys in the stated regional layout. Separate media buttons, macro buttons and rotary controls are excluded. A Touch ID or Lock key in a key row counts, as on Apple keyboards.

Not available

1041Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Specification: Number of keys 104. The maker photo shows a standard 104-key layout with the right Windows and menu keys replaced by Fn and a backlight key.

Key legends for

Not available

Windows1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Maker photo shows a Windows logo key.

Numpad

Yes4Owner's manuallogitech.com/assets/70208/g915_x_lightspeed_qsg_amr.pdfRead 30 September 2026English p. 5 full-size keyboard diagram includes number pad.

Yes1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Maker photo shows a numpad.

Function row

Yes4Owner's manuallogitech.com/assets/70208/g915_x_lightspeed_qsg_amr.pdfRead 30 September 2026English p. 5 keyboard features diagram includes F1-F12 function row.

Yes1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Maker photo shows F1 to F12.

Dedicated arrow keys

Yes4Owner's manuallogitech.com/assets/70208/g915_x_lightspeed_qsg_amr.pdfRead 30 September 2026English p. 5 keyboard features diagram includes separate arrow cluster.

Yes1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Maker photo shows an inverted-T arrow cluster.

Navigation keysiAvailability of Home, End, Page Up and Page Down as dedicated keys or through an Fn layer.

Full4Owner's manuallogitech.com/assets/70208/g915_x_lightspeed_qsg_amr.pdfRead 30 September 2026English p. 5 diagram shows the full Home, End, Page Up and Page Down navigation cluster.

Full1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Maker photo shows Ins, Home, Pg Up, Del, End and Pg Dn as separate keys.

Key stagger

Not available

Row-staggered1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Maker photo shows row-staggered keys.

Bottom row

Not available

Not available

Low profile

Yes1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026

Not available

Switches

9 of 25 differ

Switch sensing technologyiKey sensing technology. Hall effect and TMR are different sensor types. A mixed board is identified explicitly. Magnetic switch housing alone does not identify the sensor.

Low-profile mechanical1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026"Low-profile GL mechanical switches"

Membrane1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Product name: Membrane Gaming Keyboard.

Switch feel

Linear, Tactile, Clicky1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026

Not available

Switch maker

Logitech1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026Product features and press release identify Logitech GL mechanical switch design.

Not available

Switch models

GL Linear, GL Tactile, GL Clicky1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026Maker describes GL mechanical switches in Linear, Tactile, Clicky styles. Retail GL Red/Brown/Blue names are not needed for identity.

Not available

Switch stem

MX cross5Press releases24.q4cdn.com/131595232/files/doc_news/2024/09/G915-X-PRESS-RELEASE-FINAL-1.pdfRead 30 September 2026Maker launch release p. 2 explicitly replaces old hook-style with cross-style stem.

Not available

Actuation forceiForce at the point where a key registers. Initial spring force is not actuation force. Adjustable switches require a stated actuation setting.

43 to 48gf1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 20262Maker product pagelogitechg.com/en-gb/shop/p/g915-x-wireless-mechanical-gaming-keyboardRead 30 September 20263Maker product pagesupport.logi.com/hc/en-us/articles/25605931386007-Specification-G915-X-LIGHTSPEEDRead 30 September 20269Retailer pagebhphotovideo.com/c/product/1851732-REG/logitech_g_920_012670_g915_x_lightspeed_low_profile.htmlRead 30 September 202610Retailer pageadorama.com/logitech-g915-x-lightspeed-wireless-gaming-keyboard/p/lo920012704Read 30 September 202611Press releasepress.logicool.co.jp/ja-jp/g915x-pro-x-tkl-rapidRead 30 September 2026

Not available

Bottom-out forceiForce at the end of the switch travel. It is not the initial spring force or the tactile peak.

Not available

Not available

Tactile bump forceiPeak force of the tactile bump. It is not the force at initial movement or at bottom-out.

Not available

Not available

Actuation pointiDistance before a key registers. For adjustable boards, the default profile or setting is stated in the source note.

1.3mm1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026"Actuation Point: 0.05 in (1.3 mm)". The support spec page gives 1.3 mm±0.30 mm

Not available

Total travel

3.2mm1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026"Total travel distance: 0.12 in (3.2 mm)". Support page: 3.2±0.25 mm

Not available

Rated keystrokes

Not available

Not available

Factory-lubed switches

Not available

Not available

Adjustable actuation

Not available

Not available

Actuation rangeiSelectable actuation distances. These are settings, not a measured usable travel range.

Not available

Not available

Actuation stepiSmallest documented increment between selectable actuation settings.

Not available

Not available

Per-key actuationiActuation can be configured individually for supported keys. The source note identifies any excluded keys.

Not available

Not available

Rapid trigger

Not available

Not available

Minimum rapid trigger movementiSmallest selectable movement used to reset or reactivate a key. This is a setting, not measured accuracy.

Not available

Not available

Multi-action keys

Not available

Not available

SOCD handling

Not available

Not available

Analog inputiCan send variable gamepad or joystick input. Magnetic sensing or adjustable actuation alone does not establish analog output.

Not available

Not available

Hot-swap socketsiSwitches can be replaced without soldering. Magnetic compatibility must be checked separately.

None6Reviewpcgamer.com/hardware/gaming-keyboards/logitech-g915-x-lightspeed-reviewRead 30 September 2026Spec box: "Hot-swappable: no"

Not available

Compatible switches

Not available

Not available

Stabilizers

Not available

Not available

Factory-lubed stabilizers

Not available

Not available

Keycaps

1 of 5 differ

Keycap material

PBT5Press releases24.q4cdn.com/131595232/files/doc_news/2024/09/G915-X-PRESS-RELEASE-FINAL-1.pdfRead 30 September 20266Reviewpcgamer.com/hardware/gaming-keyboards/logitech-g915-x-lightspeed-reviewRead 30 September 2026

Not available

Legend method

Doubleshot5Press releases24.q4cdn.com/131595232/files/doc_news/2024/09/G915-X-PRESS-RELEASE-FINAL-1.pdfRead 30 September 2026"double-shot, shine-through PBT"6Reviewpcgamer.com/hardware/gaming-keyboards/logitech-g915-x-lightspeed-reviewRead 30 September 2026Spec box: "Keycaps: Double-shot PBT"

Doubleshot1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Features: Double-shot keycaps (permanent legends).

Keycap profile

Not available

Not available

Keycap thickness

Not available

Not available

Shine-through legendsiLight passes through the legends. Translucent keycap sides alone do not count.

Yes5Press releases24.q4cdn.com/131595232/files/doc_news/2024/09/G915-X-PRESS-RELEASE-FINAL-1.pdfRead 30 September 20267Reviewrtings.com/keyboard/reviews/logitech/g915-x-lightspeedRead 30 September 2026

Yes1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Specification: Two-color translucent keycaps. The maker photos show the legends lit by the backlight.

Performance

4 of 11 differ

Polling rate per connectioniDocumented report rates for each connection. Required receivers or optional adapters are identified in the row and source note.

ALogitech G915 X LIGHTSPEED

Connection	Polling rate (Hz)
USB (wired)	1,000

Source3Maker product pagesupport.logi.com/hc/en-us/articles/25605931386007-Specification-G915-X-LIGHTSPEEDRead 30 September 2026"USB Report Rate: Max: 1 ms", "USB Protocol: USB 2.0". Stored as 1000 Hz wired. No 2.4 GHz LIGHTSPEED report rate is published on any page found, so no 2.4 GHz row is stored

BRedragon K521-R 104-Key Wired Membrane Gaming Keyboard

Not available

Max polling rate

1,000Hz=CalculatedFrom Polling rate per connection

Not available

Polling rate (wired)

1,000Hz=CalculatedFrom Polling rate per connection

Not available

Polling rate (2.4 GHz)

Not available

Not available

Polling rate (Bluetooth)

Not available

Not available

Scan rateiHow often the keyboard reads its switches. A USB report rate does not establish a scan rate.

Not available

Not available

Input latency (claimed)iMaker-published input or response latency with conditions in the source note. Do not calculate this from polling rate.

Not available

Not available

Key rollover per connectioniKeys registered simultaneously over the stated connection. Connection is omitted if the source does not specify it.

Not available

Not available

Anti-ghosting

Not available

Yes1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Features: 25-key rollover anti-ghosting. The Amazon listing says 19 keys anti-ghosting. Neither figure fits a rollover option, so key_rollover is left out.

Adjustable debounce

Not available

Not available

Minimum debounce

Not available

Not available

Measured

None of 7 known

Latency per connection (measured)iReviewer measurements for one tested setup per row. Settings and test method are stated in the source note. Missing conditions are not inferred.

Not available

Not available

Actuation point (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Total travel (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Operating force (measured)iReviewer-measured force at actuation. The switch and actuation setting are stated in the source note.

Not available

Not available

Typing noise (measured)iReviewer-measured A-weighted typing sound level. Measurement distance and conditions are stated in the source note.

Not available

Not available

Battery life (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Weight (measured)iReviewer-measured keyboard weight without cable or wrist rest. The tested configuration is stated in the source note.

Not available

Not available

Connectivity

12 of 18 differ

Connections

USB (wired), 2.4 GHz, Bluetooth1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026

USB (wired)1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Specification: Connection Wired.

Wireless technology

LIGHTSPEED1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026

Not available

Bluetooth

5.03Maker product pagesupport.logi.com/hc/en-us/articles/25605931386007-Specification-G915-X-LIGHTSPEEDRead 30 September 2026"Connection Type: Dongle, Bluetooth 5.0, USB"

Not available

Bluetooth device slots

Not available

Not available

Devices it can switch betweeniDistinct device connections available for switching. Do not infer this by adding wireless modes or paired Bluetooth slots.

Not available

Not available

Device switchingiControl used to switch between paired device hosts. Connection-mode and OS switches are described separately.

Button4Owner's manuallogitech.com/assets/70208/g915_x_lightspeed_qsg_amr.pdfRead 30 September 2026A LIGHTSPEED button and a Bluetooth button select the connection

Not available

Receiver connector

USB-A3Maker product pagesupport.logi.com/hc/en-us/articles/25605931386007-Specification-G915-X-LIGHTSPEEDRead 30 September 2026The receiver section (mislabel led "Mouse Specifications") gives "Connection Type: USB 2.0 Type A" and "LIGHTSPEED wireless technology"

Not available

Receiver storage in keyboard

Yes12Reviewstuff.tv/review/logitech-g915-x-lightspeed-reviewRead 8 October 2026Full-size G915 X LIGHTSPEED review identifies the rear alcove for the supplied USB-A receiver.

Not available

Receiver shared with other devices

Yes8Maker product pagesupport.logi.com/hc/en-in/articles/7707694960663-Connect-two-LIGHTSPEED-devices-to-one-receiver-using-the-Device-Pairing-ToolRead 30 September 2026Compatible keyboard list includes G915 X(LIGHTSPEED, TKL). Receiver pairs one compatible mouse and one keyboard using G HUB device pairing.

Not available

Wireless range

Not available

Not available

Detachable cable

Yes1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026The USB-C data/charging cable is a separate item in the box and plugs into the USB-C port on the keyboard

No1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Same photo: the cable is fixed.

Port on keyboard

USB-C3Maker product pagesupport.logi.com/hc/en-us/articles/25605931386007-Specification-G915-X-LIGHTSPEEDRead 30 September 2026

None1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Maker photo shows the cable leaving the top edge and no port on the keyboard.

Cable plug

USB-A3Maker product pagesupport.logi.com/hc/en-us/articles/25605931386007-Specification-G915-X-LIGHTSPEEDRead 30 September 2026"USB A to C charging, data cable"

USB-A3Retailer pageamazon.com/dp/B0DRFGNWV1Read 23 October 2026Item details: Connectivity Technology USB-A. Some regional retailers describe a Type-C cable for the RGB Netherbane, which is not this listing.

Cable

Not available

Not available

Cable length

1.8m1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026

Not available

USB passthrough

Not available

Not available

Works withiSystems on which the keyboard works. Configuration software may have narrower system support.

Windows, macOS, ChromeOS, Android, iOS1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026System requirements: LIGHTSPEED on Windows 10 v.1809 or later and macOS X 10.11 or later. Bluetooth on Windows 11, macOS X 11, Chrome OS, Android 4.3 and iOS 10 or later

Windows, macOS1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Features: Windows 10/11 plus macOS compatible. The Specification row lists only Windows 10 down to Windows XP. The Features line and the Amazon listing are stored.

Consoles

Not available

PlayStation, Xbox3Retailer pageamazon.com/dp/B0DRFGNWV1Read 23 October 2026Title: Compatible with PC, Mac, PS4/5, Xbox. Bullet: Windows XP to Win11, PS4-5, Xbox, MacOS, no driver required. The Redragon store page does not mention consoles.

Battery

9 of 16 differ

Battery type

Li-Po1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026

Not available

Number of batteriesiNumber of replaceable AA or AAA cells required. Internal rechargeable battery packs are not counted here.

Not available

Not available

Battery capacity

Not available

Not available

User-replaceable battery

No3Maker product pagesupport.logi.com/hc/en-us/articles/25605931386007-Specification-G915-X-LIGHTSPEEDRead 30 September 2026"Battery user replaceable? No"

Not available

Battery life per mode (claimed)iMaker estimates. Store one published native duration unit per row: hours, days or months. Days and months describe calendar use including idle time, not continuous runtime. Do not convert calendar estimates into hours. Connection, lighting and polling rate are included only when published. Brightness, workload, screen status, sleep settings and up-to qualifiers go in the source note.

ALogitech G915 X LIGHTSPEED

Connection	Lighting	Hours (h)
2.4 GHz	Max	36
Not available	On	90
Not available	Off	800

Source1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026"LIGHTSYNC RGB @100% Brightness: Up to 36 hrs", "@50% Brightness: Up to 90 hrs", "RGB OFF: Up to 800 hrs". The press release says the 36 hours are on LIGHTSPEED. The 90 hour row is at 50% brightness. RGB must be turned off with the brightness button to reach 800 hours

BRedragon K521-R 104-Key Wired Membrane Gaming Keyboard

Not available

Longest battery life (claimed)iLongest maker estimate published in hours across the listed modes. Rows published in days or months do not contribute. Conditions can differ between products.

800h=CalculatedFrom Battery life per mode (claimed)

Not available

Battery life, lighting offiLongest maker estimate published in hours with lighting off. Calendar-day and calendar-month estimates are not converted and do not contribute.

800h=CalculatedFrom Battery life per mode (claimed)

Not available

Battery life, lighting oniLongest maker estimate published in hours with lighting enabled. Calendar-day and calendar-month estimates are not converted and do not contribute. Brightness and display conditions are stated in the source note.

90h=CalculatedFrom Battery life per mode (claimed)

Not available

Battery life, backlight on (claimed)iLongest maker up-to estimate published in calendar days with backlighting enabled. Includes idle time and the source-defined usage pattern, not continuous runtime. Brightness, workload, connection and sleep conditions remain in the table and source note. Hours and months are not converted.

Not available

Not available

Battery life, backlight off (claimed)iLongest maker up-to estimate published in calendar months with backlighting off. Includes idle time and the source-defined usage pattern, not continuous runtime. Workload, connection and sleep conditions remain in the table and source note. Hours and days are not converted.

Not available

Not available

Charging port

USB-C4Owner's manuallogitech.com/assets/70208/g915_x_lightspeed_qsg_amr.pdfRead 30 September 2026Charging section shows the USB-C cable plugged into the keyboard

Not available

Full charge timeiPublished time for a full charge. Approximate times remain qualified in the source note.

Not available

Not available

Quick charge

Not available

Not available

Use while charging

Yes13Owner's manuallogitech.com/assets/70208/g915_x_lightspeed_qsg_amr.pdfRead 8 October 2026USB data/charging connection is documented alongside the active wired mode indicator and charging indicator. Keyboard functions remain available through the wired connection.

Not available

Solar charging

Not available

Not available

Battery indicator

LED3Maker product pagesupport.logi.com/hc/en-us/articles/25605931386007-Specification-G915-X-LIGHTSPEEDRead 30 September 2026"Indicator Lights (LED): Battery, Capslock"4Owner's manuallogitech.com/assets/70208/g915_x_lightspeed_qsg_amr.pdfRead 30 September 2026Battery light pulses green when charging and shows red when the keyboard needs charging

Not available

Build

3 of 8 differ

Case material

Aluminum top plate (1.5 mm)5Press releases24.q4cdn.com/131595232/files/doc_news/2024/09/G915-X-PRESS-RELEASE-FINAL-1.pdfRead 30 September 2026"The aluminum top plate thickness was increased from 1.2 to 1.5 mm"

ABS3Retailer pageamazon.com/dp/B0DRFGNWV1Read 23 October 2026Item details: Keyboard Plate Material ABS. Amazon names it plate material and it is stored as the case material.

Plate material

Not available

Not available

Mount style

Not available

Not available

Flex cuts in PCB

Not available

Not available

Sound dampeningiDampening layers the maker or a review names. Foam whose position in the stack is not stated is foam. Films, pads and silicone parts that fit no other option are other.

Other12Reviewstuff.tv/review/logitech-g915-x-lightspeed-reviewRead 8 October 2026Reviewer describes extra layers of sound dampening material. Material and layer placement are unspecified, so no foam or plate classification is inferred.

Not available

Typing anglesiKeyboard slope for each supported foot position, starting with the lowest. An adjustable-foot count does not establish angles. When the maker publishes only the angle with the feet out, that angle is stored alone.

Not available

Not available

Spill resistant

Not available

Yes1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Features: spill-resistant design plus ergonomic tilt.3Retailer pageamazon.com/dp/B0DRFGNWV1Read 23 October 2026Infographic: Spill-resistant Protection. Prevent accidental spills from interrupting your game.

IP rating

Not available

Not available

Lighting

4 of 7 differ

Backlight

RGB per key7Reviewrtings.com/keyboard/reviews/logitech/g915-x-lightspeedRead 30 September 2026Free verdict text: "Per-key addressable RGB lighting and shine-through keycaps". The measured test results are members-only and were not used

RGB zones1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Features: 6-zone RGB backlighting. Specification: Lighting Rainbow.

LED position

Not available

Not available

Lighting zones

Not available

61Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Features: 6-zone RGB backlighting.

Brightness levelsiSelectable onboard brightness steps. The source note states whether the off position is included.

Not available

41Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Features: 4 brightness levels. It is not stated whether off is counted.

Side or underglow lighting

Not available

Not available

Lighting sensors

Not available

Not available

Lighting sync

LIGHTSYNC RGB1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026LIGHTSYNC RGB, customisable through G HUB

Not available

Controls

8 of 12 differ

Media keysiPlayback controlled by separate buttons, an Fn layer or a multifunction knob/rocker. Volume controls are listed separately, and knob presses are excluded from the separate media-button count.

Dedicated4Owner's manuallogitech.com/assets/70208/g915_x_lightspeed_qsg_amr.pdfRead 30 September 2026Media controls in the upper right corner: volume roller, skip back, play/pause, skip forward and mute

Fn layer3Retailer pageamazon.com/dp/B0DRFGNWV1Read 23 October 2026Infographic: 12 multimedia functions through Fn plus F1 to F12 (media player, play/pause, volume down and up, mute, next and previous track, stop, e-mail, home page, calculator and lock keyboard).

Separate media buttonsiSeparate physical buttons for playback or mute, counted once each. Fn shortcuts, macro buttons, knob presses and roller presses are excluded.

44Owner's manuallogitech.com/assets/70208/g915_x_lightspeed_qsg_amr.pdfRead 30 September 2026Skip back, play/pause, skip forward and mute. The volume roller is not counted

03Retailer pageamazon.com/dp/B0DRFGNWV1Read 23 October 2026The photo shows no separate media buttons. Media functions are Fn layer shortcuts.

Volume control

Roller1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026Materials section: "Metal Roller". The press release calls it a cast iron volume roller

Keys3Retailer pageamazon.com/dp/B0DRFGNWV1Read 23 October 2026Infographic: Fn plus F2 and F3 for volume down and up, Fn plus F4 for mute.

Knobs

Not available

01Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026No knob in the maker photo.

Programmable knob

Not available

Not available

Knob press

Not available

Not available

Separate macro keysiSeparate physical keys or buttons intended for macros. Excludes ordinary remappable keys, media buttons and a dedicated software-launch button.

91Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026"Assign complex macros to one of 9 G keys"4Owner's manuallogitech.com/assets/70208/g915_x_lightspeed_qsg_amr.pdfRead 30 September 2026English p. 5 diagram identifies G1-G5 left column plus G6-G9 top buttons. Nine physical G keys, distinct from playback buttons.

01Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026No separate macro keys in the maker photo.

Built-in screen

Not available

None1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026No screen in the maker photo.

Touchpad

Not available

No1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026No touchpad in the maker photo.

Fingerprint reader

Not available

No1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026No fingerprint reader in the maker photo.

OS mode switch

Not available

Not available

Windows key lock

Yes4Owner's manuallogitech.com/assets/70208/g915_x_lightspeed_qsg_amr.pdfRead 30 September 2026The Game Mode button disables the Windows key and the Menu key

Yes3Retailer pageamazon.com/dp/B0DRFGNWV1Read 23 October 2026Infographic: FN plus Win locks the Windows key.

Software

5 of 10 differ

Software

Logitech G HUB1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026"(Optional) Internet access for Logitech G HUB Software"

Not available

Software runs on

Not available

Not available

Open firmware

Not available

Not available

Onboard memory

Yes4Owner's manuallogitech.com/assets/70208/g915_x_lightspeed_qsg_amr.pdfRead 30 September 2026

Not available

Onboard profilesiProfiles stored on the keyboard, including fixed defaults when the maker counts them. Software-only profiles are excluded.

34Owner's manuallogitech.com/assets/70208/g915_x_lightspeed_qsg_amr.pdfRead 30 September 2026"Three onboard profiles can be saved to G915 X LS", selected with FN+F2, F3, F4 in onboard mode

Not available

Macros

Yes1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026

Not available

Macros stored onboardiRecorded command sequences run from keyboard storage without the configuration app. Onboard lighting or remapping alone does not establish this.

Not available

Not available

Key remapping

Yes1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026

Not available

LayersiTotal key mapping layers including the base layer. Lighting effect layers and profile slots are excluded.

Not available

Not available

User firmware updates

Not available

Not available

Ergonomics

0 of 4 differ

Wrist rest

None4Owner's manuallogitech.com/assets/70208/g915_x_lightspeed_qsg_amr.pdfRead 30 September 2026Box contents and keyboard diagram show no separate wrist rest. The maker box list does not include one.

None1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026No wrist rest in the package contents.

Wrist rest material

Not available

Not available

Tenting

Not available

Not available

Tenting angles

Not available

Not available

Dimensions and weight

2 of 6 differ

DimensionsiKeyboard body dimensions with fitted keycaps, without wrist rest and with feet folded. Any different measurement condition is stated in the source note. Width is the longest side, depth runs front to back and height is the thickness. Map by size when the maker's labels differ.

Width475Depth150Height22.6mm(18.7 × 5.9 × 0.9 in)1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026Published as Height 22.6 mm, Width 150 mm, Length 475 mm. Stored as width 475, depth 150. The feature text and press release say 23 mm high, the spec value is kept3Maker product pagesupport.logi.com/hc/en-us/articles/25605931386007-Specification-G915-X-LIGHTSPEEDRead 30 September 2026

Width434Depth128Height31mm(17.1 × 5 × 1.2 in)1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Weight & Size: Product Size (L x W x H) 43.4X12.8X3.1cm. Mapped by size: width 434, depth 128, height 31. The measurement conditions are not stated.

Dimensions with wrist rest

Not available

Not available

Keyboard weightiKeyboard without cable or wrist rest. Weights that include accessories cannot be stored here. A cable that cannot be removed is included. Replaceable batteries are included, as built-in batteries are.

1,080g(2.4 lb)1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026"Weight (w/o cable): 38.09 oz (1080 g)"3Maker product pagesupport.logi.com/hc/en-us/articles/25605931386007-Specification-G915-X-LIGHTSPEEDRead 30 September 2026

581g(1.3 lb)1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Weight & Size: Product Weight 0.581kg.

Weight including wrist restiKeyboard plus supplied wrist rest, excluding packaging. The source note identifies any included cable.

Not available

Not available

Box dimensions

Not available

Not available

Box weightiOne retail package including its contents. A multi-unit shipping carton weight is excluded.

Not available

Not available

Certifications

None of 2 known

Platform certifications

Not available

Not available

Other certifications

Not available

Not available

In the box

2 of 3 differ

In the box

G915 X LIGHTSPEED gaming keyboard, LIGHTSPEED USB receiver, USB extender, USB-C data/charging cable, User documentation1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026Verbatim from the In the Box panel

Keyboard, User Manual1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Package Contents: 1 x Keyboard, 1 x User Manual.

Cables included

ALogitech G915 X LIGHTSPEED

Type	Count
USB-C data/charging cable (USB-A to USB-C, 1.8 m)	1

Source1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026One USB-C data/charging cable in the box. The support page calls it "USB A to C charging, data cable", length 1.8 m

BRedragon K521-R 104-Key Wired Membrane Gaming Keyboard

Not available

Spare switches

Not available

Not available

Links

Not compared

Product page

www.logitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.html1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026

redragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboard1Maker product pageredragon.com/products/redragon-k521-r-104-key-wired-membrane-gaming-keyboardRead 23 October 2026Redragon US store page. The only variant is US at 25.99 USD and it shows Sold Out on the access date. The page has a Buy on Amazon button that links to Amazon listing B0DRFGNWV1. The page has no description text.

Spec sheet

Not available

Not available

Manual

www.logitech.com/assets/70208/g915_x_lightspeed_qsg_amr.pdf4Owner's manuallogitech.com/assets/70208/g915_x_lightspeed_qsg_amr.pdfRead 30 September 2026Setup guide for the Americas (English, French, Spanish, Portuguese)

Not available

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

Not available

Not available

Warranty

1 of 1 differ

Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

2years1Maker product pagelogitechg.com/en-us/products/gaming-keyboards/g915-x-wireless-mechanical-gaming-keyboard.htmlRead 30 September 2026"2-Year Limited Hardware Warranty" (US page)

Not available

Both are also in the API. Back to all keyboards.