hi

I bought a new rig 4 months ago and i got massive problems in FSX and other games ( x plane ...), i got spikes and low FPS with DX9 so i was obligate to play with DX10.

 

Yesterday i just realised that all of that was because i placed my gpu in a PCIE 16 2.0 slot whereas i have also 3.0 slot

i just moved my gpu (gtx 660) to the 3.0 slot and...

 

30 FPS at paris CDG with NGX instead of 10 ! NO SPIKES, smooth

and i am using 1/2 vsync which is limiting my FPS maybe i can get more !!

 

 

well, i know people are not stupid as me but who knows, check your PCIE slot if you are experiencing weird problems with your new rig !

you should absolutely use the 3.0 if you have ivy bridge because ivy bridge proc use 3.0 to, you will be GPU limited.

To add another similar mistake to watch out for that I'll admit to with my build:

 

I noticed in GPU-Z and Nvidia Inspector that my video card slot PCI-E spec was shown as 1.1 rather than the 3.0 I expected. I went in to the bios and found the setting for the slot was on "Auto". Setting it to "Gen3" allowed it to run at the correct PCI-E 3.0 spec.

 

My board is an Asus P8Z77-V Pro and these settings were found under "Advanced\ System Agent Configuration\ NB PCIe Configuration" in the bios.

The "1.1" that you see in GPU-Z is a variable, you'll notice that if you open a game or a render test it will go up to 3.0

By setting Gen3 you are fixing it at 3.0, so more electric consumption