The Logitech G903 LIGHTSPEED is a great gaming mouse. It has excellent build quality and great ergonomics. It's suitable for use with either hand and you can use any grip you prefer. People with small hands, however, might find some buttons not as comfortable to reach when using the fingertip grip. This mouse has excellent overall performance with low click latency and high precision and allows for many adjustments. It's equipped with a large number of customizable buttons that you can program with the accompanying software, which is very versatile and has no compatibility issues.
The G903 is a great mouse for office use. Thanks to its great ergonomics and excellent build quality, the mouse will perform well for any job you throw at it. It's suitable for any hand size, except if you have very small hands and like to use the fingertip grip.
This is a great mouse for playing FPS games. It has an excellent low lag and offers a responsive gaming experience. It's highly customizable, offers excellent performance, and sits comfortably in your palm thanks to great ergonomics that make it suitable for any hand size. The only time you might have an issue is if you have small hands and like to use the fingertip grip.
Excellent mouse for MMOs. It has a large number of customizable buttons, high versatility, and excellent low click latency for a responsive gaming experience. The G903 has great ergonomics, suitable for any hand size, except if you favor the fingertip grip, in which case people with small hands will have a hard time reaching some of the buttons.
Decent mouse for ultra-light gaming, despite its sub-par minimum weight. On the upside, the G903 has low click latency and great ergonomics that make it suitable for most people, except those with small hands that prefer to use the fingertip grip.
The Logitech G903 is a decent mouse for travel. However, it's not compact and you won't have an easy time using it on a plane. On the upside, it's wireless and you don't have to worry about distracting cables.
The Logitech G903 has a sleek gamer design with an aggressive-looking front. There are two RGB zones: one for the prominently displayed logo on the back, and one that displays the battery level. Its profile is fairly low and there are many sharp edges. It has latex grips and is made of solid plastic with a mix of a glossy and matte finish.
This mouse has an average weight with or without the wire. There's a 10g weight that attaches to the underside. If you want to make the mouse lighter, you can remove both the weight and its housing.
The Logitech G903's build quality is excellent. It's made mostly of plastic with latex grips, and thanks to its sturdy construction it feels very solid. Even the removable magnetic buttons lock nicely into place and have no wobble. The only part that wobbles is the wheel lock button, which is mechanical and not electronic, but this shouldn't be an issue.
The Logitech G903 has great ergonomics. It has a symmetrical design with no preference given to right-hand or left-hand use. The customizable buttons are removable and can be placed on either side. The side with no buttons can be covered using the included plastic cover. All the grip types are comfortable for medium hands or larger. For a more ergonomic design, check out the Logitech G502 LIGHTSPEED Wireless or the smaller Logitech G403 Wireless.
The Logitech G903 connects to your PC with only a USB dongle. The lack of Bluetooth connectivity isn't good since you're dependent on the USB receiver for your mouse to work. The battery indicator is integrated with an RGB zone.
The G903 has a very good cable that doesn't interfere with use. When the mouse is plugged in for charging, the USB receiver is no longer needed as the mouse operates through the wire and not wirelessly. There's also a receiver extension adapter included.
The sensor on the mouse we tested is the PMW3366. There's also a variant with the HERO 16K sensor that, according to specs, reaches a higher maximum CPI. If you want something with a much higher max CPI, then check out the Logitech G903 HERO.
Update 10/07/2020: We increased the total number of programmable inputs by one. We incorrectly listed that you can't reprogram the left button without assigning the left click action to another button, but you can reprogram the button.
The G903 has an excellent set of buttons, most of which are customizable and some of which are also removable. There's also a profile switching button and a wheel lock button, but they can't be programmed to perform other tasks.
The G903 has an outstanding vertical mouse wheel. Apart from the feedback it provides, you can also tilt it so that you scroll horizontally in your documents. Also, there's a scroll unlock button that allows you to toggle between incremented or infinite scroll.
The G903 has an excellent low click latency, both wirelessly and wired. This is great news for gamers.
The compatible software is excellent. The Logitech G HUB offers plenty of customization options and is great for gaming. You can easily customize its lighting, the performance, its buttons, and more. The mouse's onboard memory feature lets you use it on a different computer without having to reprogram it.
The Logitech G903 is an amazing wireless gaming mouse. It has excellent performance, which can be customized in the software. It has a great build quality and has a near-universal shape for all hand sizes and grips. Its latency, whether used wireless or wired, is amazing. Unfortunately, you can't use this wireless mouse via Bluetooth and will need its dedicated receiver to use it wirelessly. See our recommendations for the best mice and the best wireless mice. If you're interested in Logitech products, also check out the best Logitech mice.
Overall, the Logitech G903 LIGHTSPEED is better than the Logitech G703 LIGHTSPEED Wireless Gaming Mouse with HERO Sensor. The G903 has twice as many buttons, and the scroll wheel can be unlocked for smooth scrolling and tilt inputs. Also, the G903 has a shape that fits a broader range of hand sizes and grips. However, the G703 has lower click latency and a wider CPI range.
The Logitech G903 HERO and Logitech G903 LIGHTSPEED are the same, but with different sensors. The HERO has a higher max CPI and less CPI variation, while the LIGHTSPEED has a lower minimum CPI.
The Logitech G903 LIGHTSPEED is a better gaming mouse than the Logitech G502 HERO; it's a wireless mouse with lower latency even while wireless. The G903 feels just as well made but has an ambidextrous design and can be used in any grip by any hand size, except for fingertip grip which may be a little too large for smaller hands.
The Logitech G903 LIGHTSPEED is a better gaming mouse than the Logitech G604 LIGHTSPEED. It's noticeably lighter, although still a bit heavy, and better built. The G903 is compatible with a lot of different hand sizes and grips. It comes with a charging cable, but can't be used via Bluetooth like the G604.
The Logitech G903 LIGHTSPEED is a better gaming mouse than the Logitech MX Master 3, but the MX Master 3 is much better for office use. The G903 has a much better sensor performance and a lower click latency, which provides a responsive gaming experience. It's also much more customizable and features RGB lighting. The MX Master 3 has gesture-enabled commands and a much more ergonomic design for long workdays. The Logitech is also Bluetooth-compatible and also has a horizontal scroll wheel.
The Logitech G903 LIGHTSPEED is a better wireless gaming mouse than the Logitech G305 LIGHTSPEED. It feels better-built and has a more comfortable design. It can also be used by almost any hand size in every grip type, except for small hands with a fingertip grip. It has more programmable buttons, and the scroll wheel can be unlocked for infinite scroll. On the other hand, the G305 is a smaller and more lightweight mouse that may be easier to travel with.
The Logitech G903 LIGHTSPEED is a better wireless gaming mouse than the Logitech G602. It's more comfortable for all hand sizes, has a better scroll wheel, a much wider customizable CPI range, and has a rechargeable battery. On the other hand, the G602 has a thumb rest on the left side for a more comfortable grip.
The Logitech G502 LIGHTSPEED and the Logitech G903 LIGHTSPEED are very similar. The G502's design is a bit more ergo-shaped, thanks to the thumb rest, but its large body may not be well-suited for smaller hands. Performance-wise, it has a slightly better sensor with a wider CPI range and practically no CPI variation. It also has three side buttons, including a sniper, and two additional buttons on top of the left click, whereas the G903 only has two side buttons. That said, the G903 has an ambidextrous design that should fit most hand-sizes using any grip style, except for smaller hands with a fingertip grip.
The Logitech G Pro Wireless is a more versatile mouse than the Logitech G903 LIGHTSPEED. While they're both great for gaming with a wide, customizable CPI range and very low latency, the G Pro is quite a bit lighter. The G903 has a better cable and a much better mouse scroll wheel. Both mice are great for all hand sizes and grip styles, except small hands may have a difficult time with a fingertip grip on both.
The Logitech G903 LIGHTSPEED is slightly better than the Steelseries Rival 650. The Logitech is an ambidextrous mouse that's suitable for most grip types and hand sizes. It also has lower click latency, more buttons, and vertical wheel tilt. However, the SteelSeries is a right-handed mouse that feels more comfortable to use overall.
The Logitech MX Master 2S and the Logitech G903 LIGHTSPEED are both great mice but designed for different uses. The MX Master 2S is designed more with productivity in mind and has a comfortable, ergonomic fit with a thumb rest on the left side. It also has a horizontal scroll wheel and a slightly better-built quality, but unfortunately may be too large for smaller hands. The G903 is more gamer-centric with RGB lighting, two programmable side buttons, a much higher max CPI, and a smaller body that can be used by almost every hand size in any grip type.
The Razer Viper Ultimate is a better overall gaming mouse than the Logitech G903 LIGHTSPEED. It's lighter, more comfortable to use (especially if you prefer the fingertip grip), and its sensor is amazing. It comes with a nice RGB charging station. On the other hand, the Logitech is a bit more versatile, thanks to its wheel's unlock button and the fact that it's fully compatible with macOS.
The Corsair DARK CORE RGB PRO and the Logitech G903 LIGHTSPEED are two similar-performing mice. The Corsair is a right-handed mouse with Bluetooth support. It has lower click latency, wider CPI range, and a higher polling rate. However, the Logitech is an ambidextrous mouse that's lighter, has less CPI variation, lower lift-off distance, and more buttons.
The Glorious Model O is an ultra-light gaming mouse that's half the weight of the Logitech G903 LIGHTSPEED. The Logitech may be more suitable for people with smaller hands, except those using a fingertip grip. Both mice have very low latency and a wide adjustable CPI range.
The Logitech G903 LIGHTSPEED is a better gaming mouse than the Corsair IRONCLAW RGB Wireless. It's noticeably lighter and, when used wired, its cable feels better made and more lightweight. The Logitech also has an ambidextrous design, while the Corsair is for right-handed people with a strong slanted design. On the other hand, the Corsair can be used via Bluetooth as well as its receiver, which the Logitech can't do.
The Logitech G903 LIGHTSPEED is marginally better than the Logitech G403 Wireless Gaming Mouse. While both have tremendous gaming capabilities, the G903 has a few more buttons, you can unlock its scroll wheel for infinite scrolling and it features tilt inputs as well. Performance-wise, they are very similar, although the click latency of the G903 is a bit lower and can feel a bit more responsive. On the other hand, if you prefer ergo-shaped mice, the G403 wireless might be a better option than the ambidextrous design of the G903.
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