DirectX bottlenecks ~15k batches with best CPU on market, performance plumets by huge amounts after that point.
on mantle, you can do 80k-100k without issue.
"At application level, starswarm is 3 faster in some cases"
Imagine running directX and getting 20 fps in a game, compaired to running mantle and getting 60 fps.
A 3 times speed up is huge, certainly more than just the ~20% some people have been saying it ll likely only amount to.
And that with Oxide observing it's a pre-alpha build they've only had for two months, they have barely started to do GPU optimizations and in general have just 'scratched the surface' of Mantle's potential.
GDC in March will be interesting.