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Repair Windows errors before they cause bigger problemsFix Now →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →Verdict: The Endgame Gear OP1 8k remains an exceptionally fast, lightweight wired mouse for competitive FPS players. Its sensor, click latency, weight, cable, and hot-swappable mechanical switches are all excellent. The deciding factor is its compact, narrow shape: it suits many small- to medium-handed claw and fingertip players, but can feel cramped for large hands or relaxed palm grips.
The original OP1 8k has now been superseded by the OP1 8k v2. The v2 is the safer choice when prices are close because it is the current revision, but testing from RTINGS does not show a meaningful gaming-performance advantage over the original. Buy the original when it is substantially discounted or when its PAW3395 implementation specifically appeals to you.
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Endgame Gear OP1 8k: quick specifications
| Feature | Original OP1 8k |
|---|---|
| Connection | Wired USB |
| Sensor | PixArt PAW3395 |
| Polling rate | 1,000Hz, 2,000Hz, 4,000Hz, or 8,000Hz |
| Maximum CPI | 26,000 |
| Tracking speed | 650 IPS |
| Acceleration | 50G |
| Dimensions | 118.2 × 60.5 × 37.2mm |
| Weight | Approximately 50.5g |
| Main switches | Kailh GX mechanical, hot-swappable |
| Cable | 1.8m Flex Cord 5.0 |
| Buttons | Six, including the underside CPI button |
| Layout | Right-handed, symmetrical shell |
| Lighting | None |
| Skates | PTFE; small skates installed, larger skates included |
These specifications come from Endgame Gear’s official product information. The OP1 8k is symmetrical in shape, but it is not fully ambidextrous: the side buttons are positioned on the left.
Shape and comfort matter more than the specifications
The OP1 8k is a compact mouse designed primarily around claw and fingertip grips. Its low rear and narrow body give the fingers room to control the mouse without filling the palm as much as a larger ergonomic or palm-oriented model.
#1 Best Overall
- ULTRA-HIGH POLLING RATE: True 4000Hz wireless polling for ultra-fast response. Also supports 2000Hz/1000Hz wireless and 1000Hz when wired for max flexibility.
- PINPOINT SENSOR ACCURACY: PixArt PAW3950 sensor with up to 30,000 CPI, 750 IPS, 50G, and fine-tuned LOD from 0.7–1.7 mm. Built for precision, even during high-speed gameplay.
- LIGHTNING-FAST CLICKS: Pre-sorted Kailh GX switches offer crisp feedback, ultra-low latency, and 80M-click durability for consistent, competitive-grade performance.
- ALWAYS READY TO PERFORM: No wake-up delay or idle lag. Hybrid wired/wireless with 6 ft Flex Cord 7.0 ensures a stable, drag-free connection when you need it most.
- CLAW-GRIP CONTROL: Right-handed shape with flatter sides, extended ledges, and dry grip coating. Weighs just ~58.5 g for agile, precise control.
That makes it a strong match for small- to medium-handed players who prefer a controlled claw posture or fingertip control. It can also work for larger hands with the right grip and sensitivity, but large-handed palm users are the least likely to enjoy it. The short, narrow shell may leave the hand extending beyond the mouse or force the fingers into a cramped position.
There is no reliable universal hand-size cutoff. Finger length, where the palm contacts the rear, grip pressure, and preferred sensitivity all matter. If you currently use a large mouse with substantial palm support, the OP1 8k is likely to feel restrictive rather than simply “light.” If you use a compact claw mouse, its proportions are much easier to justify.
Shape should therefore be your first buying criterion. The PAW3395 sensor and 8,000Hz polling rate are already more than capable for competitive play; they cannot make an unsuitable shell comfortable.
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Build quality, feet, and cable
Leading testing describes the OP1 8k’s build quality as excellent, although some secondary coverage has been more critical of its feel and value. That disagreement is worth keeping in perspective: the mouse is an aggressively lightweight design, so it can feel less substantial than a heavier productivity mouse without necessarily being poorly built.
The chassis uses plastic with a dry-grip coating. Endgame Gear supplies small PTFE skates pre-installed and includes larger skates, allowing users to choose between the supplied glide configurations. The low weight is useful for large, fast FPS swipes, but it also means the mouse has less physical presence than a conventional 70g-or-heavier model.
The included 1.8m Flex Cord 5.0 is flexible enough to reduce cable drag, but wired mice still require good cable management. A mouse bungee or elevated routing keeps the cable from catching on the desk and makes the OP1 8k feel closer to a wireless mouse during low-sensitivity play. The cable is replaceable, which is a practical long-term advantage; Endgame Gear lists an OP1 Flex Cord 5.0 replacement at $8.99 in the observed US store listing.
Rank #2
- Ultraszybka częstotliwość odpytywania do 8000 Hz: Ciesz się najwyższą responsywnością i precyzją w czasie rzeczywistym dzięki niesamowitej szybkości odpytywistym Ym ania 80 000Hz OP1 8k v2 Powered by the Nuvoton M483 high-speed MCU, this gaming mouse provides up to 8000 data reports per second, providing instant speed and minimal latency. With every flawless performance, you'll have an edge in the most intense and fastest gaming scenarios.
- PixArt PAW3950 U+1F95A - Powered by our PixArt PAW3950 U+1F95A sensor, OP1 8K v2 provides uncompromising accuracy up to 30,000 CPI with ultra-precise adjustment in 10 CPI steps below 10,000 and 50 degrees CPI in We lock the sensor frames per second at 20,500 fps to ensure stable tracking and ultra-fast response every time. Combined with a maximum of 750 IPS and 50G acceleration, this sensor not only keeps up, but remains at the forefront.
- Kailh GX Switches Developed by Endgame Gear - Designed for ultra-fast accuracy on all polling indicators, Kailh GX mechanical switches ensure you don't miss a key click. The SPDT configuration ensures optimal electrical contact and unmatched reliability. Equipped with top and bottom contacts, Kailh GX switches stand out whether you prefer low click latency in GX speed mode or security in GX emergency mode.
- Industry-leading click latency: The OP1 8k v2 raises the bar in the performance of a wired mouse, making a click delay below 70 microseconds (equivalent to 0.070 ms)*. With a constant surge frequency of 8,000Hz for clicks, you'll enjoy extremely low click latency across all sensor polling frequency settings. The GX Speed Mode also reduces click delay by about 1.4ms: your computer clicks faster than a physical click sound.
- Redesigned Shape for Versatile Claw Grip - With a lightweight design at just under 50g, the OP1 8k v2 gaming mouse provides unmatched comfort during intense gaming sessions so you can focus on your own performance. Taking inspiration from the popular XM shape, the OP1 elevates it to the next level while putting pressure on the claw grips. Its flat sides provide maximum flexibility when placing fingers, so it fits perfectly even players with larger hands.
Gaming performance: excellent sensor and very low click latency
The standard black and white OP1 8k models use the PixArt PAW3395 sensor. Endgame Gear rates it for up to 26,000 CPI, 650 IPS tracking, and 50G acceleration. Its lift-off distance is listed as 1mm, with a software option for 2mm.
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RTINGS characterizes the original OP1 8k’s sensor performance as exceptional for gaming and reports very low sensor latency. In practical FPS use, tracking accuracy, motion consistency, and click response are not meaningful weaknesses. You do not need to run the mouse at 26,000 CPI, and a higher CPI ceiling does not automatically make a mouse more accurate at normal settings.
Be careful when comparing reviews: the limited Purple Frost edition uses a different PAW3950-based implementation, so its measurements should not automatically be treated as representative of the regular OP1 8k. The OP1 8k v2 also uses different internal hardware.
What 8,000Hz polling actually changes
At 1,000Hz, the mouse reports roughly every 1 millisecond. At 8,000Hz, it reports roughly every 0.125 milliseconds. The theoretical interval difference is about 0.875ms—not an eightfold improvement in reaction time or aim.
On a high-refresh monitor, higher polling can make fast cursor movement appear smoother and can reduce the spacing between input reports. The effect is most relevant during rapid movement and to users with high-refresh displays and sufficiently high frame rates. It is not a substitute for a comfortable shape, stable frame times, appropriate sensitivity, or a good monitor.
Higher polling also increases USB interrupt and CPU workload. Some games, applications, or systems may behave more consistently at 1,000Hz or 2,000Hz. Start at 1,000Hz and compare the same game, sensitivity, and display setup at 2,000Hz, 4,000Hz, and 8,000Hz. Keep the highest setting that remains smooth and stable. If 8,000Hz causes stutter, frame-time spikes, cursor irregularity, or game instability, using a lower rate is the correct fix—not a performance failure.
Rank #3
- ULTRA-HIGH POLLING RATE: True 4000Hz wireless polling for ultra-fast response. Also supports 2000Hz/1000Hz wireless and 1000Hz when wired for max flexibility.
- PINPOINT SENSOR ACCURACY: PixArt PAW3950 sensor with up to 30,000 CPI, 750 IPS, 50G, and fine-tuned LOD from 0.7–1.7 mm. Built for precision, even during high-speed gameplay.
- LIGHTNING-FAST CLICKS: Pre-sorted Kailh GX switches offer crisp feedback, ultra-low latency, and 80M-click durability for consistent, competitive-grade performance.
- ALWAYS READY TO PERFORM: No wake-up delay or idle lag. Hybrid wired/wireless with 6 ft Flex Cord 7.0 ensures a stable, drag-free connection when you need it most.
- CLAW-GRIP CONTROL: Right-handed shape with flatter sides, extended ledges, and dry grip coating. Weighs just ~58.5 g for agile, precise control.
Clicks and the hot-swappable switch system
The original OP1 8k uses Kailh GX mechanical switches and supports tool-free switch-board replacement without soldering. Endgame Gear lists the standard stock switches at 55–60gf; the Purple Frost edition uses lighter 50–55gf switches. The main-switch rating is listed as 80 million actuations.
The stock clicks are intended to feel crisp and tactile, but their force and sound will not suit everyone. Players who prefer light, rapid clicks may find the standard switches too firm, while users who like deliberate actuation may appreciate their more substantial feel. The hot-swap design is valuable because it lets you change the click character—or replace worn switches—without replacing the whole mouse.
Endgame Gear sells individual OP1 switch packs, and its universal switch set includes two universal switch PCBs and 14 switches for experimentation. Compatibility and available force ranges vary by pack, so check the current product listing before buying.
The Tool Desk
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How to replace the switches
- Disconnect the mouse.
- Remove the two screws on the underside.
- Carefully open the shell and disconnect the main-button cables.
- Fold the shell to the left.
- Use a PH000 screwdriver to remove the switch-PCB screws.
- Replace the switch PCBs.
- Reassemble the mouse in reverse order.
- Test both clicks and confirm that the configuration software recognizes them.
Endgame Gear permits opening the mouse for changing compatible OP1 switches and replacing the detachable cable, but user-caused damage is not covered. Its guidance also warns that disassembling the scroll-wheel encoder or other internal components can affect warranty coverage. Follow the company’s official opening and warranty guidance rather than treating every internal repair as supported.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Software, firmware, and setup
The official OP1 8k downloads page currently lists firmware V1.24 and Configuration Tool V1.12 for Windows. The page reviewed lists Windows tools; do not assume equivalent macOS or Linux configuration support.
Rank #4
- Blazing-Fast 8000Hz Polling Rate: Experience next-level responsiveness with an 8000Hz polling rate, reducing input lag for ultra-smooth tracking and fast reactions.
- Precision PixArt PAW3395 Sensor: Featuring up to 26,000 CPI sensitivity and 650 IPS tracking speed, perfect for competitive gaming.
- Kailh GX Switches: Exclusive to Endgame Gear, these mechanical switches are durable and fast-actuating, designed for a sharp, responsive click feel that ensures precision control.
- Ultra-Lightweight Design: Weighs just 1.8 oz (52 g) for maximum comfort during long gaming sessions, reducing fatigue without sacrificing performance.
- Customizable Skates: Hybrid skate design lets you adjust your glide with two different sizes, tailoring your mouse to any playstyle or surface.
The software is used for CPI adjustment, polling-rate selection, button remapping, lift-off-distance configuration, firmware updates, and switch-performance settings. During firmware updates, connect the mouse directly to a motherboard USB port, avoid hubs and docking stations, and do not interrupt power.
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1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errorsIf the mouse is not detected, reconnect it directly to the PC, confirm that you installed software for the original OP1 8k rather than the v2, and retry with unnecessary USB devices disconnected. If detection or firmware problems continue, contact Endgame Gear support before opening the mouse for an unrelated fault.
Scroll wheel and secondary controls
The OP1 8k has a conventional two-way scroll wheel and six total buttons. It does not provide left/right wheel tilt, free-spinning scrolling, or extra wheel controls. That is perfectly adequate for most FPS layouts, but it makes the mouse less versatile for productivity, browsing, and games that benefit from many bindings.
The left-side buttons are positioned for right-handed use. The underside CPI button is useful for changing sensitivity but is less convenient than a top-mounted control and should be mapped carefully if you want to avoid accidental changes. If your game needs more than two side buttons—or you need genuinely ambidextrous controls—the OP1 8k is not the right design.
Original OP1 8k versus OP1 8k v2
The v2 keeps the same general OP1 shape, wired connection, 8,000Hz maximum polling rate, and hot-swappable Kailh GX SPDT switch system. Its main changes are internal.
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Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minute| Area | OP1 8k | OP1 8k v2 |
|---|---|---|
| Sensor | PixArt PAW3395 | PAW3950 U+1F95A |
| MCU | Nuvoton M483 | New Nuvoton MCU |
| Scroll encoder | TTC Silver wide encoder | Kailh dustproof encoder |
| Weight | Approximately 50.5g | Approximately 49.5g |
| Polling | Up to 8,000Hz | Up to 8,000Hz |
| Shape | OP1 shape | Same OP1 shape |
The v2 is newer and is the current availability and support choice. However, RTINGS’ comparison reports no meaningful measurable or noticeable gaming improvement over the original. In some measurements, the original’s PAW3395 performance compares favorably with the v2’s PAW3950 implementation. That does not make the original universally better; it means the v2 should be viewed as an updated revision, not a dramatic competitive upgrade.
The observed official US price for the OP1 8k v2 was $89.99 on August 16, 2026. Prices and regional availability change, and the original is now more likely to appear as remaining stock or a discounted product. If the original costs close to $89.99, buy the v2. If it falls meaningfully below that—particularly around the $50–$60 range—it becomes a compelling bargain.
Quick Recap
Alternatives worth considering
- OP1 8k v2: The straightforward current replacement if you want the OP1 shape and wired 8,000Hz performance.
- OP1w 4k v2: Choose this when you want the OP1 family’s compact shape without a permanent cable. The observed official US price was $129.99, and its maximum polling rate is lower than the wired 8k models.
- OP1we: A cheaper wireless option, observed at $49.99 on sale versus $89.99 normally. It uses optical switches rather than the mechanical Kailh GX platform, so it is not compatible with the mechanical OP1 universal switch set.
- XM2 8k v2: A same-brand wired 8,000Hz alternative with a larger, claw-focused shape. It is more relevant if the OP1 feels too small, but less suitable if you specifically want a compact fingertip profile. The observed official US price was $89.99.
Who should buy the OP1 8k?
- Buy it if you use claw or fingertip grip and have small or medium-sized hands.
- Buy it if you want a very light wired FPS mouse and do not want to charge batteries or manage a wireless receiver.
- Buy it if experimenting with mechanical switches is important to you.
- Buy the original specifically when it is clearly cheaper than the v2 or when you prefer its tested PAW3395 implementation.
- Avoid it if you use a relaxed palm grip with large hands.
- Avoid it if wireless connectivity, a larger shell, more side buttons, or horizontal/free-scrolling controls are essential.
- Avoid treating 8,000Hz as a reason to tolerate an uncomfortable shape or unstable game performance.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
