Logitech G903 Vs G603 Lightspeed: Which one is for You?

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The mouse of Logitech G903 Lightspeed and G603 Lightspeed is compared here. The features, the ergonomic design, and comfort and everything are different. Before making the decision which one will be for you, check out the detailed review.

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Logitech G903 LightspeedLogitech G603 Lightspeed
Stellar wireless performance.
Powerplay wireless charging support.
Wealth of customization options.
Unbelievable battery life.
Super-comfy design.
Onboard memory.
Dual Lightspeed/Bluetooth wireless.
It’s really expensive.Could use one more thumb button.
It will never love me back.


Connectivity TechnologyWirelessWireless
Movement Detection Technologyopticaloptical
Movement Resolution16000 dpi12000 dpi
Performance1 ms response time, realtime sensitivity switching 100 – 16000 dpi, report rate: 1000 Hz, up to 400 inches per second
Buttons Qty116
OS RequiredWindows 7 or later, macOS 10.11 or later, Chrome OSAndroid 3.2 (Honeycomb) or later, Apple MacOS X 10.10 or later, Google Chrome OS, Microsoft Windows 7 or later
Run Up Time140 hours500 hours
Width2.6 in2.7 in
Depth5.1 in1.7 in
Height1.6 in4.9 in
Weight3.88 oz3.14 oz
FeaturesHERO 16K Sensor: our most advanced, with 1:1 tracking, 400+ IPS, and 100-16,000 max DPI sensitivity – plus zero smoothing, filtering, or acceleration, and 10X power efficiency of previous gen.

LIGHTSPEED Wireless: pro-grade 1 ms report rate, no cable drag, no compromises on weight or battery life; esports professionals depend on LIGHTSPEED’s responsiveness and reliable connectivity.

140 Hour LiPo Battery: super-efficient system design results in almost 6X the battery life of previous gen; lasts for up to 140 hours with LIGHTSYNC RGB lighting, and up to 180 hours without.

POWERPLAY wireless charging: Never worry about your battery life again. Add the POWERPLAY wireless, charging system to keep G903 and other compatible G mice charged while at rest and at play.*

LIGHTSYNC RGB: full-spectrum lighting responds to in-game action, audio, and screen color ; customize, lighting effects from 16.8M colors with G HUB gaming software, and sync across G gear.

Advanced Button Technology: metal-spring button tensioning keeps primary left and right buttons poised to trigger with less force, for exceptional button feel, response, and consistency every time.

Ambidextrous Design: configurable button layout lets you adjust for left- or right-handed use ; use G HUB gaming software to customize 6-11 buttons PVC-free and Plastic Neutral: one of few peripherals with a plastic neutral certification ; each purchase helps Logitech fund Plastic Bank programs that remove ocean-bound plastic from the environment.
Classic Shape + Weight Tuning: Built for comfort with an ergonomically designed, lightweight, contoured body. Adjust weight and balance by using one or two batteries.

Personalized Control: Six fully programmable buttons including on-the-fly DPI shifting through up to 5 sensitivity settings.*

Next Generation HERO Sensor: Revolutionary Logitech optical sensor delivers class-leading accuracy, up to 10X the power efficiency**, and consistent performance with zero smoothing, filtering or pixel rounding across the entire 200 – 12,000 dpi range.

Connect to Multiple Devices: Use either LIGHTSPEED or Bluetooth wireless and easily switch between the two with a push of a button.

Amazing Battery Life: Up to 500 hours on 2 AA batteries – twice as long as our previous generation.***

Advanced Wireless Performance: LIGHTSPEED wireless technology for super-fast 1 ms response time and faster than wired performance.

Logitech Gaming Software: Configure macros, sequences of clicks and keystrokes to simplify in-game actions and quickly execute complex tasks.

*Profile settings require free Logitech Gaming Software download. **Compared to previous generation. ***Battery life may vary based on user, battery discharge characteristics and computing conditions.

Detail Review:


Logitech G903 Lightspeed

Most of us had three key features and they were all required. We need the mouse to have the ability to switch between the gaming PC and the MacBook with ease. Also, require that it needs to be wireless. The last one is it needed to be a not only a great productivity mouse but a great mouse for gaming. So, natural selection will be this the Logitech G903 Lightspeed.

Logitech G603 Lightspeed

This is a budget wireless mouse with some decent features in it. As the design of the mouse is so simple, the comfort is good and the grip is also good enough. 

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Logitech G903 Lightspeed

Out of the box, I was quite surprised at the weight it comes in at 110 grams. Therefore, a competitor’s mouse, this is on the heavier side but it doesn’t necessarily feel as if it would end in any kind of gameplay, at least for myself.

Aesthetically, it does look great especially with the hint of RGB coloring popping through the Logitech logo. I’ve never really cared for over-the-top RGB, so the subtleness of the lighting here is very desired.

I do have larger hands, so my grip is a bit awkward in the sense that I need to almost tuck my pinkie up a bit. So, it’s not dragging so much on the mouse mat. While it’s an easy adjustment, some may find it a bit cumbersome since the mouse is slightly skinnier in comparison to others on the market.

Logitech G603 Lightspeed

More in-depth with the build quality, it’s quite impressive. The tolerances on this thing are insanely tight and nothing wiggles around when it isn’t supposed to. The buttons feel high-quality and precise when clicked, unlike some mice which have a cheap or kind of mushy quality to them. The scroll wheel is a tactile plastic/rubber, I’m not really sure what to call it but it feels nice. It’s also pretty thick in case you have fat fingers.

The construction is unlike any mouse I’ve seen. The entire top of it is held on with magnets and you just pop it off to replace the batteries. There’s also a little slot inside to put the light speed on little during transport. I think, it has a nice weight but if you want a lighter mouse or a different weight distribution, you can just run it on one battery, you might think that would severely handicap the battery life but that’s really not the case. It will, of course, have your usage time.

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Logitech G903 Lightspeed

Inside the box, you received the mouse itself. At first glance, it looks very futuristic. You’ll also receive the charging cord and the USB receiver as well as an accessory kit, it houses the ambidextrous buttons and weight if you plan to use them. I just opted to leave them in the packaging.

This mouse is ambidextrous, the left thumb buttons are removable and are held on by strong magnets and then the accessory box there are an additional two buttons if you wish to place them on the right. There are 11 programmable buttons, all are customizable. So, you can use each and every button as per your likes.

One of the biggest complaints the Logitech G903 is within the USB receiver. I’ve noticed, you need to be within roughly two to three feet to have optimal performance while you’re gaming. So, making sure the USB receiver is within arm’s reach is very critical.

Now for all your nerds out there check it, this mouse has a hero sensor. You can customize your DPI settings between 200 and 16,000 and it’s extremely durable for up to 50 million clicks. The performance of the mouse in gaming is just amazing and nice. The responsiveness and the accuracy are awesome, you will like this mouse a lot. 

Logitech G603 Lightspeed

This is one of the earlier mice to use Logitech’s new lightspeed wireless technology. This allows it to operate lag-free while still retaining the freedom of a wireless mouse. Light speed requires a USB dongle but one of the unique features about this mouse is it can also operate over Bluetooth, a feature uncommon on serious gaming-oriented products. Making it a nice choice for a mobile mouse, that’s one of the reasons I got it, Most wireless mouse, especially those that operate on Bluetooth are simply low quality, gaming-oriented wise at least in the case of Logitech seem to be of a bit higher quality than generic mice. They just feel right.

There’s a button on top for switching the DPI settings, it changes colors based upon which preset you have it assigned to. You can remap this button and any other button on the mouse to do whatever you want but I leave it as the DPI switcher. There are also two side buttons meant for forwards and backward functions but again, these can be set to do whatever you want and they can be saved on the device.

The headline feature of this mouse aside from the battery life of course is Logitech slight speed wireless technology. Most of the time when you hear claims of a lag-free wireless experience, it’s usually marketing but this isn’t the case here. It’s quite good and I don’t think, I have a reason to ever use a wired mouse again. There is no perceptible difference between this and wired, that’s as technical as I’m going to get with it but I think it is genuinely good. If you use it as a Bluetooth mouse, expect it to perform like a $20.00 Walmart Mouse that’s not really the fault of the mouse itself, more so the limitations of Bluetooth. It does work though and it works as well as any other Bluetooth mouse.

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Logitech G903 Lightspeed

Battery life is something I was quite concerned about going into the mouse but after my testing, I was able to get roughly 24 hours with these LED lights turned on from one single charge. I turned off the LED lights, I was able to get around 26 hours which is quite a bit less than Logitech claims you can get with no LED lights turned on.

Logitech G603 Lightspeed

The battery life on this thing is pretty incredible compared to most of its competition. In performance mode which is a thousand Hertz polling rate is ready to run for 500 hours straight and going off the results, I’ve had so far, I believe that. There’s also an endurance mode which extends the battery life. It’s ready to run 18 months but do you take an account that’s assuming average usage during those 18 months.


Logitech G903 Lightspeed

There are 11 programmable buttons, so you can use those buttons as whatever you want. You have many options for customizations of those buttons. You can also change the profits and you have five options means profiles in that. Also, you can set RGB lighting, as this is premium gaming mouse, there are lots of RGB options placed in the software. For all these, you have download Logitech G Hub software.

Logitech G603 Lightspeed

One thing to note, Logitech gaming software will not recognize it in Bluetooth mode. It needs to be connected via lightspeed to program it or to do whatever else you want to do with Logitech Gaming software.

Logitech Gaming software is where you can adjust your DPI presets, adjust the polling rate, change the buttons around, and program the onboard preset that means you could program it to work a certain way and then use it on another computer without Logitech software and all your buttons and dpi settings will still be on the device. Even if you’re running it over Bluetooth, those button presets will still persist.

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Both the mice work well and great as per their price. In my opinion, for $70 the G603 will be a great mouse as this is wireless and has many decent features. Even though the G603 doesn’t have as many features and functions as G903 lightspeed, its a great budget wireless mouse. If you have a budget of about $100, then G903 will be great to buy because it has so many options and features.

Expert Reviews of Logitech G903 Lightspeed:

By TheStreamingBlog
Aesthetics, excellent performance, absolute comfort, complete configuration – the Logitech G903 Lightspeed wireless gaming mouse has everything. All in all, this gaming mouse is a great product. With the optional side buttons and the extensive…

By Gamingtrend
Overall, my experience with this duo has been positive. The mouse has performed fantastically, it is very responsive and accurate. It went above and beyond what I had expected from a wireless mouse, and it is nice to see things evolving in the wireless…

By Techradar
The Logitech G903 is dang expensive and even more so if you’re looking to pick up the PowerPlay mat. That said, if you want the best wireless gaming mouse combo right now, this is it. Logitech’s Lightspeed Wireless technology was ahead of the curve last…

By TrustedReviews
A brilliant, but stupidly expensive, wireless mouse

By Impulsegamer
Logitech G903 Lightspeed Wireless Mouse and Powerplay Charging Mat provides an almost true wireless experience for gamers!

Expert Reviews of Logitech G603 Lightspeed:

By Pcworld
Logitech’s wireless G603 mouse is like having a full gaming setup on the road, and with 500-plus hours of battery on two AA batteries it’s also a reliable traveling companion.

By Techeris
There used to be a time when gamers would scoff at wireless gaming peripheral options and many probably still will. However, the Logitech G603 LIGHTSPEED Wireless Gaming Mouse proves that wireless has come into its own and is a suitable choice for…

The Logitech G603 is a great gateway product to introduce new consumers into the Logitech ecosystem of wireless…

By Impulsegamer
The Logitech G603 is a great entry-level wireless mouse that is not only easy to setup but boasts an excellent battery life, including good all-round responsiveness. We could happily recommend this product to a variety of people, especially those looking for a mouse for…

By Hardwarezone
Cutting cordsIf you’re looking to cut some cords without having to break the bank, the Logitech G613 and G603 wireless gaming keyboard and mouse combo will serve you well.They combine excellent wireless performance and great battery life, thus deftly…