Even though I could not understand what you mean here exactly, but I do have to say thank you. "Bay Trail" is the code name for a series of Intel Atom processors, which is 64-bit processors, with legacy support for IA-32. Most Tablets based on this kinda
processors in China mainland provide only IA-32 ECL for UEFI, which means only 32bit OS could be loaded by the UEFI. For the current situation of Microsoft Windows, the only way to utilize its 64-bit capability is using virtual machine software. But for the
only 1GiB memory configuration, that does really look ridiculous. So even though most tablets labeled as 64-bit intel core inside, there is almost impossible to expose its 64-bit computing power at all. When I was enjoying Windows XP Professional x64 in 2005,
I found PC even equipped with 1GiB memory sometimes could make HDD light turning on and on for lot of times, which means, 1GiB is not adequate for 64-bit OS. I've no ideas about the Windows XP 64-bit Edition for Itanium 2002, but its requirement in 2001, need
at least 1GiB system memory. So I could not imagine even though the manufacturers could provide x64 ECL for UEFI, what the tablet could feel like when running under x64 edtions of Windows 8/8.1. But I am so sure that these "Bay Trail" processors are much stronger
than the processors in Microsoft Surface 1st under 32bit mode.
I've no ideas about ARM64 whether it also provides the legacy support for the 32bit mode. If, I think and believe the situation is much similar with those ATOM processors mentioned above. Other posts of mine in other topics stated that the only way
to fully utilize the potential power of ATOM and ARM64 is just sitting the Windows core onto the 32bit mode but provides support for 64-bit APPs. That might be the initial purpose of Intel for several of their 64-bit processors with support of maximum 1GiB
memory. But comparing against Playstation 3 and Xbox360, both are 64-bit game consoles, only equipped only 256MiB or 512MiB system memory but giving out a splendid performance for the games. I could not expect APPs would get close to games for game console,
but tending the tablet OS towards to the game consle might be the key to conquer the tablets market.
P.S. I might mentioned firmware size, but I don't mean that OS need to be programmed onto EPROM, leaving the updates to the external storage. I just expect tablet OS could have an acceptable size to be welcome by most tablets including entry-level tablets,
and the processor's the power should as possible as it can be sacrificed onto the actual apps rather than the smart algorithms on platform/architecture emulation. Surface might need a Office to make imaginations to pictures. But for pure tablets app-based
Office might be the first choice...Sorry for all my ideas here...