Something Weird with two computers...

[Maxime]

I have an iMac with a 3.06ghz dual core with 8gb of ram, and a 256mb video card (dedicated vram)

And i have an macbook air with an 1.4ghz dual core with 2gb, and 256mb of vram (shared with memory)

I am getting better performance with the macbook air than the iMac

I am thinking that the iMac has a graphic card problem.

i need help

Thanks,

Maxime

[woweezowee]

screen resolution?

[Maxime]

imac: 1920-1080

Macbook air: 1366-768

[Maxime]

Does "Flash storage, and a spinning hard drive" have to do anything with this issue?

[woweezowee]

no, but screen resolution does

[Maxime]

ok, how do i fix it then?

[Oliver]

You're being very vagues as to what the "problem" is causing... what FPS are you getting?

The main reason is probably because you have an 1920x1080 pixel screen vs a 1366x768 pixel screen.

I run a 1920x1080 pixel 21.5 inch screen with 1Gb vram Nvidia 9500GT, and X-Plane works flawlessly.

Your main issue here I think is your lack of vram. 256mb Vram for an 1920x1080 screen just doesn't sound like it's enough.

[Maxime]

Oh Ok, thanks  ;D

Can the graphic card be updated?

[eaglewing7]

No, iMac video cards cannot be upgraded. 

What is more important is the rendering options used.  Post a screenshot of the rendering options on your iMac.

[Maxime]

Here it is,

i get high frames in some planes at these settings...

[Ben Russell]

Macbook air: renders 1,049,088 pixels

iMac: renders 2,073,600 pixels.

iMac is doing almost 2x the work.

[Maxime]

Understood!  ;D

Thanks guys for informing me about this!!!

Best,

Maxime

[eaglewing7]

Also, look at the total rendered textures size, it is over 300mb, which is over the capacity of your video cards 256mb...  Turn down the rendering options, and you will get better results.