interesting observation I've made in the past is the window frame rate slows down due to the CPU being loaded by heavy scenery the GPU usage goes down as it is waiting for work from the CPU.

 

if I set my frame rate limit to 40 frames per second and I fly in a sparsely loaded area and the CPU is able to provide 40 frames per second at all times my GPU usage will climb. this is a result of getting more frames to render.

 

I can really start pushing my GPU if I set my anti aliasing to 8x super sample AA. then the GPU percentage starts to go up even more.

 

I can easily make my GPU hit 99 percent if I hit BP equals zero and add some clouds.

 

still screaming fast frame rates only problem is I start seeing scenery spikes the moment the GPU is at 99 percent.

 

but I guess I'm just echoing what everybody else here has already said. If the CPU can't feed the GPU enough frames to render it will sit waiting for work and it will only be so so much utilization. In the end... The CPU is the first to bend under the strain of high scenery sliders in heavy scenery areas.

 

if your setup is behaving in this way you may have room for higher anti-aliasing settings.

under 30% in DX9..

 

over 50% in DX10.  Even 80% and more when aircraft on ground.

 

I dont know which is better or not. more GPU usage bring high heat. But it didn't make more fps than DX9...

 

I will still play with DX10, Because I really appreciate the different on the environment effect. It is ture.

......

I dont know which is better or not. more GPU usage bring high heat. But it didn't make more fps than DX9..........

 

Did you compare the temperature of your GPU between DX9/DX10 too?

Spirit

when looking at the 737ngx VC the gpu load is about 50 % and when i load up clouds it jumps up to 99% thats why im upgrading to a 780  :rolleyes:

Did you compare the temperature of your GPU between DX9/DX10 too?

Spirit

 

As I said, more Gpu load bring more heat,My dispaly card is EVGA GTX670 with OTES fan. It's not a very good cooler, In the DX9 mode, the GPU core temperature always below 60C, It's good.But in the DX10 mode, it's up to 70-75C.It's a little too high. 

In the passed weenkend. I have make a compare with DX9/DX10. And I must recover my conclusion on the DX10 FPS, It's improved significantly. By use Paul's tweak guide to set up the FSX.CFG file, nvidia inspector. Then in the virtual cockpit on LAX ground goes to 25-30fps. It's amazing. I will upload some pictures later. It's runs so smooth. The FSX goes to the best condition.

 

Thank you Paul and I hope the DX10 FIX from Steve will come soon.

 

Sorry for my poor English, It's my first time to write so many word. Hope you guys can understand.

 

PS: my hardware: Intel I7 920 OC 3.9GHZ, 6G DDR3 RAM 1600MHZ, GTX 670, HDD. 23'' LCD run FSX with 1920X1080 window mode.

As I said, more Gpu load bring more heat,My dispaly card is EVGA GTX670 with OTES fan. It's not a very good cooler, In the DX9 mode, the GPU core temperature always below 60C, It's good.But in the DX10 mode, it's up to 70-75C.It's a little too high. 

.......

 

I've the ASUS GeForce GTX 670 with a little bit OC and will never reach more then 60 C. My FSX run DX10 of course.

Spirit

Yes, This due to ASUS's non-public board and twin fans. It's good for cooling.

 

I think I will change my fans DIY later.