The 28nm process looks just as fast as the 32nm SOI looking at anandtech's numbers. It's only 1 sample, but it looks like the clock speed drop due to increased power draw due to now having transistor body leakage since the SOI layer is gone. Too bad SOI got dropped for 28nm. If it was still there I'd expect the CPU clocks to be the same as richland, if not slightly higher.

Overall I'm disappointed with kaveri. The place where the APU makes the most sense is to save costs and board space on laptops while exceeding the GPU performance that intel can offer without a dGPU. While the CPU performance on desktops is OK for games, on laptops it will be lacking. Kaveri is going to run 3ghz at best in a laptop, which is going to have issues maintaining vysnc in games (my 4600m does when tweaked so it performs better than a 5750m). Yeah you can max out the resolution and run at 30fps instead, but to be forced to do that is ridiculous. GPU performance does look good though when it isn't being crippled by the CPU.

Also the gains in 512 shaders in the 7850k over the 384 in the 7600 are often less than 10% despite a 50% stronger core. When not CPU limited kaveri is badly memory starved.

http://www.anandtech.com/show/7677/a...0-a10-7850k/12