The HD 4850, is that ATI that you are referencing? The reason I selected the previous once was due to research and what others have said about them. Here is the list of certified video cards from Adobe for PS4. Based on the list below, what would you recommend?
nVidia geForce
nVidia 260 GTX 896MB
nVidia 9800 GTX 512MB
nVidia 9600 GT 512MB
nVidia 8800 GTX 768MB
nVidia 8800 GT 512MB
nVidia 8600M 256MB
nVidia 7900 GTX 512MB
nVidia 7900 GS 256MB
nVidia 7800 GTX 256MB
nVidia 7600 256MB
nVidia 6800 256MB
nVidia Quadro
Quadro FX 4600 768 MB
Quadro FX 4500 512MB
Quadro FX 4400 512MB
Quadro FX 3700 512MB
Quadro FX 3500 256MB
Quadro FX 1700 512MB
Quadro FX 1500 256MB
Quadro FX 1400 -128MB
Quadro FX 570 -256MB
Quadro FX 370 256MB
ATI Radeon
ATI Radeon 4850 512 MB
Radeon x3870 x2 512MB
Radeon x2900HD 512MB
ATI Radeon HD 2400 256MB
Radeon x1900XT 512MB
ATI Radeon x1800 - 512MB
Radeon x1800 256MB
ATI Fire GL
ATI Fire GL 7700 512 MB
ATI Fire GL 7600 512 MB
Fire GL V7200 256MB
ATI Fire GL 5600 512MB
Fire GL V3600 256MB
Fire GL 3350 256 MB
Case: Antec 1200
Motherboard: GIGABYTE GA-EP45-UD3P
VIdeo: ASUS EAH4850 1G
PSU: CORSAIR CMPSU-750TX 750W RT
CPU: Intel C2Q 9650
Mem: 2 x CORSAIR TWIN2x4096-8500C5DF R
HD: 2 x 300G WD 10K 16M SATA2 WD30000GLFS
HD: 2 x 1T WD1002FBYS
Optical: DVD Burn LG GH22LS530 22X LS Sata
Monitor: NEC LCD2690WUXI-BK-SV
MS Win Vista HM PRem SP1 64BIT OEM