Gamebooster: Fact or Myth?

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I have been reading around and seen people professing to Gamebooster improving gaming experience substantially by reducing non important activity to nothing freeing up the valuable resources. Question is,.....Is this fact or fiction...? .....first hand experiences?
 
I play World of Tanks mostly, and was having lag issues that WOT said was my computers' fault even though I have a high-end middle of the road AMD 4 core, so I added Gamebooster to see if it would make a difference. The only difference I can tell is that while I am playing WOT, my computer disables my computer from looking for Windows updates while I am playing the game...
 
It really mostly helps the CPU and RAM...
People saying it works probably have really weak CPUs or small amounts of RAM and need all the help they can get.
People saying it doesn't work probably already have high enough performance that it doesn't make much of a difference, or are being entirely GPU limited.
 
Not sure u guys still talk about gameboosters here, but i would like to know since i have low end laptop which i actualy use for gaming, will it do anything for me. Now i am an experienced PC user for years now but laptop is not my good side. I alredy set my power setings on max performance and GPU for same, did little on system, disebled visual themes and such. I can mostly run any new game on lowest settings whit FPS from 15 -25 rearly goes to 30. Dark Souls 2 runs great whit steady 25 fps and Skyrim the same. Right now i play Dota 2 whit 25 FPS and SWTOR whit 20 FPS. For some reason older games like SHIFT and Gothic 3 and Risen doest run more then 15 FPS. I read its probaly cuz of bad optimizaton of the game cuz high end PC cant manage them either. Im not looking for huge boost of 50 fps or such just few will be good. My Specs are Intel Dual Core 1.7 Ghz B820. Intel HD 2000 and 4 GB DD3. Will any booster do something or not and wic is the best. Tnx
 


So after trying out IOBIT and finding that it installed a LOT of stuff on my machine and caused some graphics providers programs some issues, I did a little digging about whether or not games boosters work.

Here are some benchmarks:
http://www.howtogeek.com/171734/benchmarked-will-a-game-booster-improve-your-pc-gaming-performance/

By and large, the few games they tried ran a bit slower with game mode enabled. So yeah, in theory it should work, disabling processes and so forth, but in actuality, under most modern OS's background process contribution to system load is negligible. I suspect the game booster adds enough system load that it doesn't really matter...

Here's a decent article on general game performance, settings and options:
http://www.howtogeek.com/142777/the-htg-guide-to-improving-your-pc-gaming-performance/


 
What I like about Gamebooster is it provides two different profiles for my PC but more on that in a bit. Gamebooster stops services and processes that are unnecessary for gaming. It has a library of processes and services it knows about and will suggest these initially. Then using the knowledge of your own PC you can select additional components to stop when you want full performance for gaming. In that way you can have a PC with "all the bells and whistles" and a PC that is lean and mean for gaming.

The only negative comment I'd have is with starting services back up when you switch back from gaming mode. Some services throw user interfaces that aren't present when the PC is powered on.