Setup, Design & Observations
The M65 PRO RGB will work without the CUE software installed using saved/default settings. Though for the full benefits it would be best to download and install the CUE software for latest firmware and complete customisable setup.
In the hand, I had previously described the M65 as being rather weighty at its default 130.5g, but after handing the ASUS Spatha that is 178.5g, it really puts it into perspective. Moving the mouse around in both palm and claw grip feels smooth and comfortable as it has enough weight for precise control. Removing the weights creates a significant difference and would be the way to go if you prefer speedy motions and a more lightweight mouse. The downside is, Corsair still do not include any type of small plastic case to help store the weights when you remove them and so may be prone to falling into the abyss (you know, that part of your room where if you drop something you will never find it again, normally an empty/plain floor). I am normally rather critical about weight reduction systems as they are somewhat a pointless waste of engineering and material causing more cost to the consumer for little to performance gain. Though to counter that statement, there are many people that will certainly appreciate the M65 PRO RGB more in its lighter/heavier state.
All the mouse buttons feel fantastic when pressed be it the side buttons, or the good quality high mass scroll wheel. The main mouse clicks, of course use Omron switches rated for 20million actuations.
One of the more interesting things about the M65 PRO RGB is its 12,000 DPI PMW336x optical sensor. In our previous review of the Corsair Scimitar we found that at high DPI settings it can be a little jittery and inconsistent, and we found the same in the M65 PRO RGB. Between 9000 - 12,000 DPI we found that in testing that there an increase jitter and decrease in responsiveness. Though, I didn't experience any of the major stutter or lag I observed with the Scimitar, presumably this has been fixed via an update. Using DPI setting of under 9000, the tracking was snappy and precise, giving great performance across various surfaces including cardboard, white paper and of course on the Corsair MM300 premium mouse mat. The only surfaces it really struggled with were glossy/reflective types, which are fairly unreasonable tests to make though the M65 PRO RGB did remain usable so it gave testament to how well the sensor can adapt to difference surfaces.
Blasting away in Killing Floor 2, I found the M65 PRO RGB to be the reliable and deadly weapon you need to turn zeds into giblets. In DOTA 2, I again had an enjoyable experience where I felt firmly in control during tense engagements where split second decisions can make all the difference in team fights.