GTX750Ti with unstable GPU Clock

[dash4]

Hello

I always can find out a frame drop whilest running NBA2K14 with AVI Player on operating.
Exact Sequence of the duplication is that

1. Run AVI Player(GOM Player)
2. Run NBA2K14
3. RUN GPU Z
4. Get in to the basketball game
5. When the screen with high polygon comes , the frame starts to drop.
6. Out to desktop screen for checking GPU Z then I can find out GPU Clock drops to 135~202Mhz
and GPU load soars to 80%~90% from just 20~30%
I only bought the new GTX750Ti graphic a week ago and prior to this , Mine was GTS250
which is 120W around power consumption,
So I do not believe this is power problem.

Would you help me to find out what is the reason for this Short Dip of GPU Clock

i5 4670
DDR3 4G PC3-12800 2 slot
GTX 750ti
Asrock H97 Performance
500W Power
( having used for 5 years with almost 470W consumption circumstance with no issue )
256GB SSD
Window 7 Ultimate K 64bit

 

[unknownofprob]

if you change windows from the game to other programs, the clock will drop and also GPU usage. When you go back to the game the clock will rise and GPU usage will also. This is normal.

 

[dash4]

Thanks

But What I meant is , frame even starts to drop while I am in the Game,
You might know GPU Z is under running as back ground to track parameters even while Game is running with full screen.

Then I can see the GPU Clock drop and GPU Load up.

This would not happen when I change to GTS250 , my old one .

 

[unknownofprob]

when the game loads, the clock will rise (then drop and stabilize). When the game starts usage will rise. Again, this is normal.

 

[dash4]

Oh sir , you misunderstand me again, I can find actuall frame drop in the game of which level of dropping make the player not possible to play , even I can not find this with my 5 year old GTS250
I assume this is a kind of problem, Power stability or GPU Power control S/W Bug.

 

[unknownofprob]

Oh right, Now I understand what your saying. I was confused by your title and examples.

What happens if you give the card a small overclock?

 

[dash4]

I have tried to compare the problem with OC and Non OC , but same
Can you help me How I can disable power consumption control by Nvidia S/W ?
with GTS250 it never happens,,
and now I can see the frame drop even with running NBA2K14 only either .