Nice review, and also nice to know that you don't need an expensive GFX for performance on normal setting. But I must add 1 thing. |Gand|Alf|, with the last test you only tested 1 place. I have tested some with AA myself and I noticed that not every place in FFX gets slowed down with AAx4. Like when standing outside the crusaders log I have maximum 2fps loss at AAx4 (pic 1, 2, strangely enough they have the same fps so no loss), but when standing at the entrance of besaid temple (at the door with those fires) I see a drastical loss in fps (pic 3, 4).
I hope you can tell the difference between them so that you see I'm not making this up. (I took a snapshot instead of screenshot)
__________________
1st. Asustek P5N-E SLI| Intel E6750 @2.66Ghz| 4x 1GB PC6400 DDR2 Crucial Ballistix Tracers 4-4-4-12 2T| Gigabyte Geforce 8800GTS 320MB|on 420W Purepower Thermaltake Powersupply 
2nd. ASRock 939Dual-SATA2| AMD Athlon 64 X2 3800+ @stock| 2x 1GB Crucial DDR400 | MSI 6600GT AGP