This is a forum of my findings with testing FSX and CrossfireX.
My system:
OS: Windows 7 x64
CPU: i7-980 3.33ghz
Ram: 16 GB Sniper 1866
SSD: 250 GB Samsung 840, 2 X OCZ 60 GB
HDD: 1 TB Hitachi, 1 Samsung HD105SI
CD/DVD Drive: HP CDDVDW
GPU: 2 X Radeon HD 7850 2GB OC'd to 1050, 1400
FSX with Crossfire with Bojote tweak tool:
Settings:
[Graphics]
Fram Rate: Unlimited
Resolution: 1920x1080
Anisotropic: On
Anti-aliasing: Checked
Global Texture: Very High
Lens Flare: Check
Advanced Animations: Check
[Aircraft]
Default View: 3-D virtual cockpit
High Res: Check
Aircraft Lights Illum Ground: Check
[scenery]
LOD: Large
Mesh com: 75
Mesh res: 5m
Texture res: 15cm
Water effects: Low 2.x
Scenery com: Extreme
Autogen den: Dense
Special effects: High
[Weather]
Cloud Draw: 60mi
Cloud Detail: Detaild and maximum
Downloads Winds Aloft: Check
Rate of Change: Medium
[Traffic]
All 0 and Labels Off
[sound]
All 50
Results:
Ultra Light and Friday Harbor (in air): 38-60
Ultra Light and Friday Harbor (on ground): 34-50
Ultra Light and KLAX (FsDreamteam {in air}): 30-40
Ultra Light and KLAX (FsDreamteam {on ground}): 25-45
NGX and KLAX (FsDreamteam {in air}): 14-18
NGX and KLAX (FsDreamteam {on ground}): 14-16
Now the major jumps in fps on some results is because I panned around the VC and those were the averages.
FSX without CFX:
Same Settings and CFG as before.
Results:
Ultra Light and Friday Harbor (in air): 40-50
Ultra Light and Friday Harbor (on ground): 40-80
Ultra Light and KLAX (in air): 34-54
Ultra Light and KLAX (on ground): 38-60
NGX and KLAX (in air): 20-30
NGX and KLAX (on ground): 25-40
I forgot to mention that I have ORBX, REX Essential, and ASE installed and running while doing these tests.