The Rundown

I have to admit, I have a weakness for peripherals. If left to my own devices, I would constantly be replacing things on my desk with the newest backlit, mechanical keyboard that plays “Hail to the Chief” whenever I sit down at my desk, or a mouse that would massage my palm and wrist between matches while also emitting a fresh linen smell into the room. Of course, I’d probably be divorced as well. Usually my budget keeps me from making these mistakes, so I’m generally very cautious about what I buy. The Logitech G502 Proteus Core gaming mouse, however, was a pure impulse buy. I wanted the soft blue lighting, and the aggressively styled buttons. I needed it. I told my wife that I was having problems with my G500. The problem being that it didn’t look as cool as the G502, and it was on sale! She gave me “the look” and I gave her “the other look” and somehow I left Best Buy with my shiny new toy.

Form & Function   

The Logitech G502 Proteus Core is the successor to the popular G500 series gaming mouse, and improves on many of its features. The design is more angular than the soft curves of the G500 without sacrificing comfort or stability. The textured sections of the mouse give a very tactile grip, and are as aesthetically pleasing as they are functional. The overall profile of the mouse feels a little lower than the G500, and is more suited for a palm or claw grip. Those who prefer a fingertip grip may want a mouse with a little more body. I use a palm grip and had little trouble transitioning from the G500 to the G502. A thumb rest is also present, and while I never thought I needed one, it has definitely grown on me.

G502 Weights

I like the heavy ones…heh…

The G502 weighs in at 145 grams, and for those that want their mouse a little heavier, Logitech includes five chevron-shaped 3.6 gram weights that can be added via a magnetic panel on the bottom of the mouse. The shape of the weights allows you to add weight to either side of the mouse, or you can arrange them in a centralized octagonal pattern for more even distribution. I added all five weights to my mouse, but that was mainly so I wouldn’t lose them. It does, however, give the mouse a very solid feel without being too bulky or cumbersome.

Button Placement & Super Sensors

The G502 has taken the 11 button layout of the G500 and improved it by making the thumb buttons larger, and moving the bottom button down and forward on the mouse. This makes the button slightly more accessible without accidentally clicking the other two thumb buttons. The two buttons to the left of the left mouse button have also been slightly enlarged, which is a blessing and a curse. By default these two buttons are used to adjust your DPI settings on the fly, and are prone to accidental clicks. While not a major issue, it can cause problems if you accidentally turn your DPI down in the middle of a fast paced game. There is technically a 12th button on the mouse, but it only serves to change the scroll wheel from a click scroll, to smooth scrolling. The click scroll is very satisfying and is especially nice if you use the scroll wheel to change weapons in-game. Each scroll has a solid click, giving you precise control of the wheel. Smooth scrolling is great for viewing webpages or quickly zooming in or out during gameplay.

G502 vs G500

Click to enlarge. I’m a writer not a photo editor, sadly.

When the G502 was released Logitech claimed it was the most powerful and most accurate optical sensor on the market. Thanks to their “super sensor”, the G502 boasts a DPI, or dots-per-inch, range of 200 to a staggering 12000 DPI. While the range is nice, I don’t see many people turning their DPI up that high. I turned the DPI up to max and wasn’t even able to keep track of the mouse on the screen.

What really impressed me about the sensor was the surface calibration feature. Using the Logitech Gaming Software, you can scan the surface you wish to use the mouse on and it will calibrate itself accordingly. This allows you to switch between hard and soft mouse pads, or if you want you can simply use it on your desktop. While it is recommended that you use the G502 on a Logitech brand mouse pad, go figure, the feet offer a surprisingly smooth ride on just about any flat surface.

Software Not Included

One of the main selling points of the G502 is that it allows you to tune it to your playstyle. However, most of that tuning isn’t possible without the Logitech Gaming Software. Logitech took a page out of Razer’s handbook by not including a physical disc with the software. Instead you get an insert with instructions on how to download the software. That small annoyance aside, the software really does allow you to customize just about every aspect of the mouse.

The software comes preloaded with profiles for several games, such as Battlefield 4, World of Warcraft, and a few others. These profiles will allow you to assign certain actions in their respective games to whatever mouse button you want. However, you aren’t limited to the preloaded profiles. You can create a new profile, and manually change the button functions however you want. You can assign normal mouse functions, keystrokes, or even multikey macros to any of the buttons. Once you’ve created a new profile you can then assign that profile to the program you created it for and the software will automatically switch your profile when you launch that particular program.

You can also use the software to fine tune your DPI settings, and a few other minor aspects of the mouse. I didn’t really change any of these settings because I was content with their default settings. If you like you can change the DPI levels assigned to the DPI increase/decrease buttons, as well as the response time of the mouse as well.

I turned the DPI up to max and wasn’t even able to keep track of the mouse on the screen.


It’s been six months since I brought my hastily purchased gaming mouse home, and it has undergone daily use, in a variety of applications. Making the transition from the G500 to the G502 was effortless, and it only took me a few minutes to set my keybinds and such with the software. At the time of purchase I was still playing World of Warcraft on a regular basis, as well as Borderlands 2 and Battlefield 4. Each game had its own profile that was automatically selected whenever I played said game, and required only minor changes via the software.

I was a little concerned that the slightly slimmer design of the G502 would cause it to become uncomfortable to use after a couple of hours, but I marathoned my way through 4 to 5 hour sessions without any hint of discomfort in my wrist or fingers. Granted, I did take breaks occasionally, but it was usually to get a drink and stretch my legs.

As far as the buttons go, I had a few misclicks here and there when things got particularly hectic in game, but overall the button placement is nice, and I prefer it more than the smaller, cramped buttons on the G500. One major issue I have with my G502, however, is my right mouse button. There were several instances where it seemed like the right mouse button stopped responding. It was particularly noticeable while playing Battlefield 4. I would be aiming down the sights, and suddenly I wouldn’t be. Clicking the button again would bring my sights back up, but there were a few deaths caused by the issue. It may have simply been my finger coming off the button without my realizing it, or the button simply may have become worn out from constant use. It did take a lot of punishment during my WoW sessions, as it was constantly held down so that I could strafe with the D-pad on my Razer Tartarus gamepad.  Whatever the issue, it seems to be an isolated incident, I searched reviews and forums posts, but was unable to find anyone else with the same problem.

For an impulse buy, I’m extremely pleased with the mouse, and would buy it again if I had it to do over. While I don’t necessarily believe in brand loyalty, the G502 is another successful member of the Logitech line of peripherals. If you are in the market for a quality gaming mouse with a reasonable price, you’d be hard pressed to find a better deal than the G502 Proteus Core. For more information regarding this product, visit the Logitech website.

The Rundown

6 word story

Sleek design melds form and function


Improved button layout


DPI buttons can result in misclicks




$79.99 / €70.15



** Is it worth a purchase? — In lieu of review scores, we opt to give our opinion on whether the product is analogous to (or literally) an upgrade or a downgrade.**

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(Image Sources: http://gaming.logitech.com/en-us/product/g502-proteus-core-tunable-gaming-mouse, http://support.logitech.com/product/gaming-mouse-g500)

In lieu of review scores, we opt to give our opinion on whether the product is worth it's release day price, or if you should wait for a sale.

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