Originally posted by: jiffylube1024
OH MY GOD! AMD has 100% of 64-bit CPU's out there, despite the fact that a 64-bit supporting OS isn't even out yet (the oft-delayed Windows XP 64, which doesn't improve anything btw) let alone 64-bit applications.
Ahem.
Suse 9.0 64 Bit Edition
And:
Kernel.org
Linux was first developed for 32-bit x86-based PCs (386 or higher). These days it also runs on (at least) the Compaq Alpha AXP, Sun SPARC and UltraSPARC, Motorola 68000, PowerPC, PowerPC64, ARM, Hitachi SuperH, IBM S/390, MIPS, HP PA-RISC, Intel IA-64, DEC VAX, AMD x86-64 and CRIS architectures.
And from my current kernel config file:
It is also incredibly inaccurate to say that they've cornered the 64 bit computing market, as there have been other 64 bit processors out there, for quite some time.
DEC's Alpha, which coincidentally NT was capable of running on.
MIPS, which was used primarily in embedded systems.
Sun's UltraSPARC, which should need no introduction.
Apple's G5 (AKA, IBM's PowerPC 970), which is also competing in the desktop market.
That's just what I could come up with off the top of my head.
Intel must be quaking in their boots that thousands of AMD buyers are getting a feature none of them can use yet. Bravo!
Actually, they probably are worried about it. If you start seeing more widespread market adoption of 64bits of precision (and double the registers) before you start seeing widespread multithreading support, they have cause to worry.
Seriously, in 6 months, this might mean something. In 2 years, it probably will, but right now AMD's small quantity of overpriced 64-bit CPU's out there means nothing in the grand scheme of 64-bit computing.
Actually, it means a great deal. It offers PC users the capability of transiting from 32 bits to 64 bits. Eventually a lot more software will be able to make use of more than 4GB of ram -- hell, there are things now that can benefit from it, and this is desktop software. If you look at scientific research firms and engineering firms, which use massive clusters of PCs in order to accomplish their simulations, they will benefit from it as well. Anand mentioned this in a tour of nVidia's engineering plant a while back, IIRC.
Obviously if Intel has no 64-bit mainstream CPU to combat AMD (which will have an abundance of them in a few months) in a few years from now, when 64-bit computing will actually be required, then this is a very significant thing. However, as of now, it means absolutely zilch.
It doesn't mean zilch to the niche markets that can make use of the extra precision NOW. The facts are that they are SELLING these processors, and that people will make use of 64 bits where they can. Remember, in 32-bit mode, the Athlon-FX51 can match up well with a P4EE 3.2GHz. In 32-64 compatibility mode (64bit OS, 32 bit apps), there are double the number of registers available, which offers a good performance boost unto itself.