Originally Posted by PhotonFanatic
Why do some people want to disable GPU boost? I thought it was a "good" thing
Boost is a nice feature for power saving (being able to limit the card if you'd like) or giving you more performance but its an added thing over standard/classic overclocking. Before all you had to do is set an overclock setting and when you use 3d programs it will ramp up to that speed. Boost goes based on voltage, power limit, and temperature. So if you have a lot of headroom boost will give you more performance. This is why when we put a certain +xxx MHz on core it will give you more than what was suppose to be given, this is also based on the boost table in the BIOS.
Here is an example.
Say my default clocks are 1140MHz w/ boost at 1278MHz.. but you still have headroom so boost puts you at actually 1354MHz.. and this is with +0mV voltage, +0 MHz core, 100% Power limit...
So 1354MHz at stock boost.
Add +87mW we are now seeing 1367MHz (another +13MHz) without touching the clocks at all.
So boost is giving you more performance for the given settings without you having to change much. Since boost is based on a table and runs off of your voltage, power limit, and temperature its hard to get consistent results and/or for benchmarking purposes. I can be running at 1514MHz yet when my temps hit above 65C it downclocks to 1501MHz (-13MHz down) so thats when boost hurts you but its going based on a safe manner to base it off temps thats why theres also priority over temperature or power limit.
On a side note you can use it to save power, or lower down performance.. say you're playing a game that doesn't use a lot of GPU power or you want to keep temps down, it can easily be done. I was testing some clocks earlier and put 50% power limit, it made my clocks 1000MHz... or if a game is capped at 60FPS (engine) and having 1200-1500/1600MHz clock wont make a difference but boost can be controlled to lower temperature.
TL;DR boost will either give or take away performance, when you disable boost, use kboost, or equivalent it puts it at the clocks you and it will run at those speeds rather than having 1514, 1501, 1514, 1501, 1488 while you're doing benchmarks
you want consistent clocks to see how high your card can go or for benchmarking score purposes.
More read here: http://www.geforce.com//hardware/technology/gpu-boost-2/technologyEdited by UZ7 - 1/11/15 at 6:17pm