They are x86_64 (64Bit)
What has happened here is Jaguar was designed from the ground up to be a sub 10w chip, this instead of taking an existing chip and scaling it down (like the i3)
The A6-1450 is a Tablet chip, at this point its not even meant for Laptops, i can't find the figures right now but it is tiny, about half the size of the 17w Core i3 which is actually a low end Ultra Book chip.
So the question is how far can this architecture be scaled up? As it stands it has 250% the performance per watt of the i3.
It will be scaled up for Laptops, it has been scaled up for the PS4, what i want to know is by how much? How good is it on whatever this scale is? how much can it be scaled up? will it replace the FX chips and give Intel some real competition. perhaps even a headache?
Jaguar isn't built to be sub 10W in particular, the cores are simply lower power, Jaguar chips for AMD will run from Temash for tablets at 3-4W, up to 25W Kabini's in laptops, quad core, higher clocks.
Jaguar is a core, Temash is a cut down version of Kabini, it IS designed for laptops, absolutely and desktops, anywhere.
Its the bobcat replacement and has both added serious power saving to mean in its lowest power forms it will use less power(ultimate power hasn't dropped that much. The lowest power bobcat ran at 5W, this will be 3.6 or 4.6W, I forget which, but it will do FAR better at that power) but don't forget this is also from a drop from 40 to 28nm, which isn't insignificant.
Jag cores scale across 3-25W range, in a bunch of devices, and it wasn't built from the ground up for anything, its the next step of bobcat. To a fairly large degree Bobcat and Bulldozer were designed in tandem, they share architectural similarities, one is designed for high clocks, deep pipeline(those go hand in hand) and big amounts of cache. Bobcat was the low power, short pipeline, low clocks, little cache version.
Scale Jaguar up to 4Ghz and all the crap you'd need to add to feed it and make it worthwhile, and you'd have Kaveri.
AMD isn't releasing a PS4 chip, it was ALWAYS releasing Kabini and Temash, the PS4 chip is a variant of a product that was always coming. To some degree Jaguar was built with a removeable/replaceable memory bus/controller, so that it can be adapted to various projects. Some will want unified memory, a different controller, different bandwidth, some will want less bandwidth, less cores, more power saving, someone might want a super high power version with an insane bus.
Why won't we see the same chip in desktop, because the PS4 chip will likely eat a lot of power that won't be worthwhile in the applications it wants to be in. For desktop and serious desktop replacement laptops, the power saving from Kaveri to a overblown Jaguar won't be worth it. Jaguar for PC's is balanced to serve the lower end of the market, no one wants or needs the power wastage that comes from an octo core mobile chip. THey can make an 8 core Jaguar no problem, its just they wouldn't have customers for it in laptops or anywhere else. Jaguar, 3-25W, 2-4 core, Kaveri 17/25W up to 100W, 4-8/12 cores.
Atom just sucks, and Intel didn't design their high end core for low power, Haswell somewhat changes that, but ultimately the design is a higher pipeline, higher power design and sticking it in a 17W form factor means lower clocks, less balance, less good chips than designing something for 5-25W. There will be a lot of crap on a 17W Haswell that will help that chip achieve 4Ghz, but it will never go above 2Ghz. Jaguar has nothing on the core to help it go above 2-2.5Ghz, and it will never go above 2-2.5Ghz, so its wasting less die space, less power.
Jaguar/Kabini looks like it will be great for AMD, Kaveri looks like it will be very good. PS4/Xbox chips look like they'll be very good. Haswell meanwhile looks boring, Intel has atom for low power(which has improved massively but still ain't great), while Haswell at the high end adds very little and is still being shoehorned into the low power segment(though again much less badly than the old chips were).