i still don't see why you'd want a full program to be installed before your keyboard works properly, and then only use it once. razer forced me to install their stupid synapse program for my headphones and it's annoying as forget.
it doesn't make it work properly, it will work just fine without it. I don't know anything about razer headphones, but that's not normal, at least for keyboards and mice. you only need to run the software when you want to modify something, and it writes it to the device's memory. if it's really that big of a deal, you can delete the software afterwards
I have
this mouse. a while ago I used the software to set the light color and brightness and a macro. more recently, I upgraded my operating system, and have yet to install that software again, and unsurprisingly it still works the same as it did before, even the macro. the software doesn't run all the time, only when you want to change some settings. and it's like 10MB, so unless you're buying a gaming keyboard for a 20 year old computer, you'll be fine
overclocking can offer a benefit that you'll notice daily. having alienware meme keyboard killer software does not.
I'm sure you wouldn't buy a keyboard with customizable lights if you didn't wanna customize the lights lol