Up to now I do not use the turbo boost feature of my I2600k and have locked the multiplier to 48 for flightsimming.I did this because with graphical intensive programs turbo boost will also stress the gpu extra and my graphics card already is overclocked quiet a bit. I also came across a topic about it : when I overclock the CPU via Turbo all 3dmark gpu scores are consistently(can't stress this enough) lower, switch to fixed multiplier all scores go way up, consistently.Specifics:ONLY AFFECTS GPU SCORE, Physx score stays constant, Turbo or fixed.3dmark11 GPU score with turbo OC(5ghz): 53363dmark11 GPU score with fixed multi OC(5ghz):5926performance hit: ~10%3dmark vantage GPU score with turbo OC(5ghz):260553dmark vantage GPU score with fixed multi OC(5ghz):26695performance hit: ~2.5% Just like ot know your opinions. Thanks in advance.

If you have the multi permanently set to 48 you arent going to get anymore from turbo anyway! I think most people overclock via the turbo multiplier usually.

Disregard

Ofcoarse you won't get any speed extra when using Turbo Boost.When using it and you are serving on the In , the speed probably will be below 2 Ghz and that might be better for the life of the cpu. On the other hand you won't the cpu's speed going up and down in FSX constantly when flying over scenery that is at one place very detailed and then less detailed.

I just run all cores @45 and do not use Turbo, Speedstep or any C-states. 3DMark is either picking up a real performance loss due to speedstep or it is wrongly indicating a loss. Hard to tell for sure which I would need watch what CPUZ was indicating while 3Dmark was running. Even if 3DMark is correct I am not sure that the difference would be noticed in real-world.

Ofcoarse you won't get any speed extra when using Turbo Boost.When using it and you are serving on the In , the speed probably will be below 2 Ghz and that might be better for the life of the cpu. On the other hand you won't the cpu's speed going up and down in FSX constantly when flying over scenery that is at one place very detailed and then less detailed.

HelloOnce FSX is loaded my CPU goes to 4.3 and never drops until I leave FSX, FSX loads the first core enough to make it go to turbo, scenery density does not affect the turbo switching..It drops back nicely to 1.6ghz while using the PC normally.4.3 ghz runs the NGX into any of my payware airports smooth as silk so no need for me to go any higher or force a permanent OC.

HelloOnce FSX is loaded my CPU goes to 4.3 and never drops until I leave FSX, FSX loads the first core enough to make it go to turbo, scenery density does not affect the turbo switching..It drops back nicely to 1.6ghz while using the PC normally.4.3 ghz runs the NGX into any of my payware airports smooth as silk so no need for me to go any higher or force a permanent OC.

Yep, same here. Not sure what all that was about TBH