Choosing between certain Logitech mice is a difficult decision. In this G403 vs G903/G900 comparison I am going to take you through all the differences between these mice and help you pick one that applies to you the most.
Both of these mice are highly popular top-end mice with the G403 being used by countless professional Overwatch players.
To help you in your decision you need to ask yourself a few questions to help you figure out which mouse is better for you.
Do you want a wireless mouse? Is customisation important? How many buttons are you looking for? But more importantly, what is your hand size and your grip style.
Choosing a mouse comes down to four main criteria, shape, sensor, weight and buttons. But also be aware of your hand size and grip style as this can be a deciding factor on what shape of mouse fits your playstyle best.
For those of you looking for a quick answer, pick the G900 if you want a wireless mouse and you don’t care for wireless charging. If you want wireless charging, pick the G903 as it has PowerPlay support.
If you don’t want a wireless mouse then pick the G403. It is a solid mouse but if you are looking for a wireless mouse the G903 is the best wireless mouse you can buy right now.
Logitech G903/G900 Specifications Overview
As you may already know, the G900 or G903 as I will refer to it has two versions. The G900 is the first version and the G903 is the new version. There are very few differences between the two but prices can vary so it is important to know. The G900 is rated for 20 million clicks, weighs around 110g and has no PowerPlay support.
The G903 is rated for 50 million clicks, weighs around 110g and has full PowerPlay support. PowerPlay is a mouse mat that will wirelessly charge your mouse. It supports most of Logitech’s newer wireless mice.
To choose between the two, it depends on what you want in your mouse. If you prefer lighter mice and don’t care for the wireless charging mat then go with the G900. Otherwise, you should consider the G903.
The G903 sports the top optic on the market, the PMW3366. A monster sensor that literally doesn’t have any drawbacks which is why you will see it in almost all top-end mice nowadays.
It fixes the tilt-slamming issue that the 3310 suffered from where you mouse would spin out if you swipe excessively. You can change the DPI between 200-12,000 in increments of 50. A solid optic that you will have zero problems with.
The G903 is an ambidextrous modular mouse allowing for full customisation of the buttons. It has a soft plastic shell and the side grips are texturised and have a gentle slope for comfort.
The mouse 1 and mouse 2 are separate from the shell and have a slight gap between the end of the shell and the beginning of the buttons. This may cause a problem for full palm grip users because when resting your fingers across the mouse 1 and mouse 2 you will feel the gap.
This is a medium to large mouse and is relatively heavy compared to the G403. But it is somewhat smaller overall. Here is a look at the dimensions:
Height: 3.8cm high
Width: 5.5cm wide (5.1cm front) (6.5cm back)
The G903 will suit all types of grip styles but I would recommend it for the following hand sizes:
Palm grip: 16-19 cm
Claw grip: 17-19.5 cm
Fingertip grip: 17-20.5 cm
There is no shortage of buttons on the G903, it has 11 buttons which can be configured in the Logitech Gaming Software for macros and shortcuts.
This includes a mouse 1, mouse 2, scroll wheel (which includes left and right horizontal scrolling), scroll wheel switcher (not programmable), DPI up, DPI down and four side buttons (two each side).
The mouse 1 and mouse 2 use Logitech’s ‘mechanical pivot design’ and are separate from the shell. There are no comfort grooves on them and they are made of soft matte plastic. They provide up to ‘50 million’ clicks on the G903 or ‘20 million’ clicks on the G900.
The buttons are solid but can be accidentally lifted up if you play with sweaty hands.
One of the popular features is the scroll wheel, which can be toggled between a notch style scroll wheel or a free scroll. The free scroll is a great feature if you work outside of gaming and for browsing.
The DPI up and down allows you to switch between 50 DPI increments to get the setting of your choice.
Due to the G903 being ambidextrous it allows for great customisability in its side buttons. You can choose between left or right handed side buttons or both.
You can even choose to have no side buttons at all if you prefer. The buttons are held in place by magnets and are easily removed and replaced.
GShift is supported by the G903 which acts as a modifier button for your macros which means you can have double the amount of macros and shortcuts set up. Great for those of you that are MMO players.
The lift-off distance is around 1 DVD high so you should have no problems with fast swiping and the cable comes in at around 1.8m. However, the cable is quite thick so you might struggle to fit it in a Zowie Camade.
Both versions have coloured RGB lighting and can be configured in the Logitech gaming software to the colour of your choice.
The battery life should last for up to 24 hours if you use the RGB effects. If you turn the lights off this can be increased up to 32 hours.
Logitech G403 Specifications Overview
One of the most popular mice on the market due to its versatility and price. It is widely considered one of the best wired mice at the moment and often seen recommended in gaming mice communities.
I featured the G403 in my list of the best palm grip mice, claw grip mice and my list of the best mice for Overwatch players. A staggering amount of professional Overwatch players play with the G403 or variants of it like the G703.
Just like the G903 the G403 has a few different variants that you should be aware of. The G403 itself comes in both wired and wireless versions. They are exactly the same except from, well… one is wireless.
There is also the G703 which is exactly the same apart from having PowerPlay support and a few more subtle differences. I wrote an article discussing the differences between the two to help debunk which is the best.
Both the G403 and the G903 share the same sensor, the PMW3366. As discussed previously its a solid sensor and you can’t go wrong with it.
This mouse is praised for its shape and is the reason it features on many of my lists. It is very comfortable and moulds to the hand. It has a plastic top shell with rubberised matte side grips which helps reduce palm sweat.
The arch is high which provides excellent support to palm grip players. Claw grip players can find comfort in resting the base of their wrist across the lower section of the arch.
The G403 is slightly larger than the G903 but not by much. It is still considered a medium to large sized mouse. Here are the dimensions:
As you can see the G403 is considerably lighter (90g) than the G903 (110g) which is one of the four main criteria for selecting a mouse so it is important to know the difference.
There is also an optional 10g weight that slips into a slot on the bottom of the mouse. A nice addition for those of you that prefer heavier mice.
The smaller a mouse is the more precise you will be with your aim. This isn’t always the case but generally speaking, people find that if they pick a smaller mouse (that still fits their hand size and grip style) they see better performance.
This leads us to the hand size recommendations for grip styles:
Palm grip: 16.5-19.5cm
Claw grip: 17.5-20.5 cm
Fingertip grip: 17.5-21.5 cm
The G403 has a total of 6 buttons which includes a mouse 1, mouse 2, scroll wheel, DPI and two side buttons. Note that the G403 is not ambidextrous so the side buttons are only on the left side of the mouse and you can’t switch them around like the G903.
The mouse 1 and mouse 2 have a short travel time and are great for jitter clicking. They are tactile and responsive. The scroll wheel is great but there is no option for free scrolling like the G903.
The side buttons are large but provide crisp tactile feedback and are of medium travel time. I do find my fingers stick to them when playing though. This can cause the buttons to squeak slightly and rattle. It doesn’t affect the performance of the mouse though.
The DPI button allows you to switch between preset DPI profiles, unlike the G903 which you can customise on the fly.
Similar to the G900 the G403 has a fairly thick braided cable of 2 metres and a lift-off distance of 1 DVD. You can also choose full RGB on the mouse through the Logitech Software.
Verdict – Which to choose?
Both of these mice are top quality and highly regarded. If you want wireless mouse grab the G903/G900. The G903 is one of the best wireless mice you can buy, if you are looking for free scroll and more customisable weight options then the G903 is for you.
Remember the only difference between them is the button durability, weight and PowerPlay support so keep that in mind if you are going for the G9 series. The G900 is usually slightly cheaper too.
If you want a wired mouse then obviously you should be leaning towards the G403. It is more affordable than the G903 so if you don’t care for the extra features then the G403 is a solid choice.
All in all these mice are great and you can’t go wrong with either of them.