The original Logitech MX518 and the later MX518 Legendary are different mice, and the old version of this article accidentally mixed their specifications together.
The original MX518 became famous in the mid-2000s with a 1600 DPI optical sensor. Logitech revived the shape in 2019 as the MX518 Legendary, adding a HERO 16K sensor while preserving the familiar right-handed shell.
In 2026, the MX518 is best treated as a legacy shape with a cult following rather than a current mainstream Logitech gaming mouse.
| Original MX518 | MX518 Legendary (2019) | |
|---|---|---|
| Sensor | Older optical sensor | HERO 16K optical |
| DPI/CPI | Up to 1600 DPI | 100–16,000 CPI |
| Connection | Wired USB | Wired USB |
| Weight | Roughly 106g generation-dependent | About 101g |
| Buttons | 8 | 8 programmable |
| Polling | Older-generation USB implementation | Up to 1000Hz |
The old “100 hours of testing” claim has been removed
The previous article said our team spent more than 100 hours testing the mouse in games including Modern Warfare 2. There is no reliable record supporting that claim, so it should not have been presented as firsthand testing.
This review is based on documented specifications and published independent testing instead.
What made the MX518 shape special?
The MX518’s identity has always been its shape: a long, sculpted right-handed shell with a prominent thumb rest and raised rear hump.
Logitech kept that shape almost unchanged for the Legendary revival because it was exactly what long-time users wanted.
The downside is equally clear: it is a fairly large mouse, and small hands may struggle to reach every button comfortably.
MX518 Legendary: the version worth discussing in 2026
The 2019 MX518 Legendary replaced the original internals with Logitech’s HERO 16K optical sensor.
Independent testing documents a 100–16,000 CPI range, 1000Hz polling and a weight around 101g. RTINGS also found low click latency and consistent tracking, while noting the mouse feels heavy compared with modern ultralight designs.
See RTINGS’ MX518 Legendary measurements.
What has aged badly?
- Weight: roughly 101g is no longer remotely light for an FPS mouse.
- Cable: the fixed wired cable is less flexible than many current “paracord-style” cables.
- Scroll wheel: functional but basic compared with Logitech’s current dual-mode wheels.
- Shape: wonderful if it fits your hand, awkward if it does not.
- Availability/support: Logitech’s support pages remain online, but the MX518 is no longer a prominent current product in the Logitech G range.
Logitech support in 2026
Logitech still hosts MX518 support pages, but the current page shows no active downloads, FAQs, documents or spare parts for the product.
See Logitech’s current MX518 support page.
That does not stop the mouse working as a normal USB pointing device, but it is another reason not to build a new setup around old hardware unless you specifically want the shape.
What should an MX518 fan buy now?
There is no perfect modern Logitech replacement because the MX518 shell is unusually distinctive.
If you mainly want a current Logitech wired gaming mouse with more buttons and modern internals, the G502 X is the obvious family alternative. Logitech lists an 89g wired chassis, HERO 25K sensor and LIGHTFORCE hybrid optical-mechanical switches.
See Logitech’s current G502 comparison.
If the exact MX518 shape is what you love, buying a clean MX518 Legendary second-hand or new-old-stock may make more sense than pretending another mouse is identical.
Should you buy an original MX518?
Only for nostalgia or collection value. The original 1600-DPI-era electronics are interesting historically, but there is no performance reason to choose them over the Legendary revival or a modern mouse.
Check the cable, scroll wheel, switches and feet carefully if buying used.
2026 verdict
The MX518 is still legendary because of its shape, not because its old hardware beats modern gaming mice. Keep one if it fits your hand and still works. Buy the Legendary revival only if you specifically want that shape. For a fresh mainstream purchase, choose a current Logitech model instead.
