Difference in FPS (nearly same spec)

[Ze-Jamz]

Ok i took this from another thread to hopefully get some advice help and guidance for others if they are thinking about upgrading they're system..

**THE SYSTEM SPECS**

AMD PhenomIIx6 1055t O/C 3.5 >>>>AMD PHENOM II X6 1090T 3.2GHZ
4 gig CRUCAIL Ram >>>>Corsair XMS3 8GB (4x2GB) DDR3
ATI 5770 slightly overclocked >>>>NVIDEA GeForce GTX470
GIGABYTE Mbo USB 3 7.1 sound >>>>ASUS-M4A89GTD-PRO/USB3
Win7 32 bit >>>>Windows 7 64bit

GAME settings are on max for both with roads/grass/shadows checked but the resolutions are different::

SYSTEM on LEFT 1920x1200 SYSTEM on RIGHT 1280x720
FPS over sea 20-30 less over land FPS over sea 60-70/40-50 over land


Now can someone tell me why the system on the right boasts 2.5/3 times the amount of FPS than the one on the left.. i just dont understand how this is working out neither do i understand why you cant pinpoint why there should be such a vast amount of differnce

Now as far as i know the systems both have the same patches and MOD.. if the system on the right doesnt have the MOD then its even more confucing

~S~