No it is not,
Look at power numbers and performance.
The only numbers we have is from 3D Mark, lets have a look.
As you may have read, BT shares the TDP between the CPU and GPU. When you run a CPU application like Cinebench(not OpenGL), portions of the GPU shut down so the CPU has more TDP headroom and it can Turbo higher with all cores. It is the reason that BT has that high MultiThreading scaling vs Single Core (Turbo) in CB.
But what happens when you run a GPU intensive application ??
From Techreport,
THIS IS THE MOST INTERESTING THING and the one to look closely,
http://techreport.com/review/25329/intel-atom-z3000-bay-trail-soc-revealed/4
We also got a look at the individual power consumption of our tablets' graphics and CPU components in two scenarios: gaming and SunSpider testing.
While gaming, the Clover Trail system's graphics drew about 650 mW, and the CPU drew 700 mW. The Bay Trail system's total power use wasn't far from Clover Trail's, but the mix was very different, with 1.2W going to the IGP and 100-150 mW heading to the CPU. To be fair, though, the Bay Trail IGP was driving a much higher-resolution display.
CloverTrail almost use half of the TDP for the CPU and Half of the TDP for the GPU. On the other hand, BayTrail uses 89% of the TDP for the GPU and only 12% for the CPU.
100-150mW for the CPU in Gaming ??? Well, that was an Android Game (i believe they used the Epic Citadel). At that low voltage for the CPU its impossible to have turbo, not to mention that i dont expect to even use all 4 cores even at base frequency of 1.45GHz. In Windows gaming, the CPU cores will need to work more and the GPU will not be able to use all the TDP it needs, the result will be even less GPU performance.
And now when you run CPU intensive apps,
In SunSpider, the CPU/GPU split on Clover Trail was 900/350 mW, while Bay Trail's was 1000/475 mW—again, comparable total power use. Of course, Bay Trail finished the SunSpider test in half the time and then dropped back to idle, so it was easily the more power-efficient solution overall.
Baytrail uses two thirds of the available TDP for the CPU by closing GPU parts. By doing so, it has free TDP to give to the CPU and it can Turbo higher.
3D MARK is a nice example,
Have a look at the
Graphics Score in 3D Mark, A4-1250 is 68% faster in Ice Storm and 69% faster in Cloud Gate. That clearly shows that BayTrail GPU performance in way slower.
Under real games the difference between the two will decrease even more due to Baytrail's dual channel RAM and slightly better CPU performance (kabini is held back by CPU a lot).
I believe it will be the opposite, In real Windows games the CPU has to do a lot of work, if BayTrail cannot lower the CPU to give TDP headroom to the GPU then the performance will not be higher but lower, like the Graphics score in 3D MARK.
I don't expect a successor to jaguar for more than a year. Looking at the time it takes for AMD to integrate its gpu ip into its APU designs we are not going to see anything better than GCN on its APUs for some time.
End of Q1 early Q2 AMD will release Jaquar 2.0, i believe they will do the same thing they did with Trinity and Rithcland. Lisa Su also said they are going to bring lower power APUs for 7-8 inc Tablets.
http://seekingalpha.com/article/167...lobal-technology-conference-transcript?page=5
Adeline LeeSo, let's talk about the tablet market. It's clearly in an area where the high-end is accelerating and the area that’s growing is the 7 inch sort of smaller form factor tablets. What’s your intention here? Do you have a specific product that competes in that area or can we expect some of your current new products to be targeting that area?
Lisa SuYes, I think what you’ll see is particularly with X86 today the focus on tablets has been around Windows 8 and they have been at the larger screen sizes and the higher performance. I think over time you’ll see that come down. I think you’ll also see that our products I said Temash was a four watt product I think you’ll see
new products coming out from us at much lower power that will support the 7 to 8 inch screen sizes. So I think overtime you’ll see Windows become a larger player in those spaces.