I can't get my setup to play BF4 at 1080 well at all. I've got 2400 speed ram...this link is fairly interesting too :
Settings wise, everything is LOW, no SSAO or any of that stuff, that's all off. Weapon DOF is OFF.
No AA pre or post or whatever. Everything is as low as a snakes belly, res is of course 1920x1080.
I'm running Win 8.1 with this driver : http://support.amd.com/en-us/kb-articles/Pages/AMDCatalyst13-11APUBetaDriver.aspx
China rising is unplayable even if you one of two guys on a 16 man server, it never goes over 32 and hangs about at 22-25 most of the time.
The main game, most maps are also unplayable, too many FPS drops, particularly explosions. Golmun Railyway I was getting 30-35 most of the time as long as I stayed in a 'Choppa. As soon as I ran about on the ground it was dropping frames like anything.
It does play at 1280x720 fine runs at about 44-46fps average, looks like crap on a 1080 monitor. Memory usage on LOW at 1080 was going between 550mb and 650mb according to GPU-Z as Afterburner/Riva won't work in BF4, in fact the Beta 3 just crashes the game.
My PSU is a Corsair 500w and the disk is an EVO 128GB Samsung. RAm is COrsair 2400 Dominator and Mobo is Gigabyte A88X Sniper.
The reason i'm griping is they were making its ability to play BF4 at 1080 a feature. I have a pc with a six core xeon and an R270 this was merely an experiment for a new PC for my son, who will be playing Minecraft and Spore and who has no interest in BF4.
The CPU does play Skyrim quite well, but no real upgrade over a 6800K.