Mantle has just ticked me off big time!!!
I just bought a new motherboard and i5-4760K CPU to use with my new R9 290/(X) cards and a whole new rig, when I could have kept my i7-860 and my ASUS P7P55 WS as my main setup. My fear was the the old system would bottleneck the 290 series.
$100.00 - Case HAF XB EVO
$120.00 - Motherboard AsRock Fatality
$ 220.00 - CPU i5-4760K
$ 80.00 - Ram
That is $520 spent that Mantle COULD have saved me.
When I get a chance I will have to benchmark both machines and see what the real numbers are. So far, from what I have read, seems like Mantle is a winner especially for older CPU's and smoothing out gameplay.
Do you plan on playing BF4 only?