No, AMD64 is not x86 with 64-bit extensions. AMD64 is a full 64-bit architecture that happens to offer compatibility to existing 32-bit x86 code.
Your use of the phrase "with 64-bit extensions" is FUD in that it may be taken as meaning that the 64-bittedness of AMD64 is incomplete, only offering extensions in some of the areas needed to move to a full 64-bit architecture.
Ummmmm......
http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/x86-64_wp.pdf Advanced Micro Devices, Inc. x86-64TM Technology White Paper Key extensions to the reliable, proven, high-performance x86 instruction set not only preserve full compatibility between 32- and 64 bit environments, they also enable 32-bit applications to move up the performance ladder right along with other advances in technology...........
Extending x86 for the 64-bit World AMD's 64-bit strategy is a straightforward extension to the current x86 instruction set. The methodology is similar to that used to extend the 16-bit architecture to 32-bits.
For operating system and application providers, development can continue uninterrupted and unburdened by transition issues and support for the 64-bit extensions in the x86-64 technology can be provided at their own pace..........
The new register extensions added via the new REX prefix add eight 64-bit GPRs (R8-R15), eight 128-bit Streaming SIMD Extensions (SSE) registers (XMM8-XMM15), and widens all GPRs and the instruction pointer to 64 bits.
UND, Re: No, AMD64 is not x86 with 64-bit extensions. AMD64 is a full 64-bit architecture that happens to offer compatibility to existing 32-bit x86 code.
I'm not going to even bother with the full response. This one is way too obvious. I suggest taking a trip to AMD's website to research the matter further before responding. Here's some help:
No, AMD64 is not x86 with 64-bit extensions. AMD64 is a full 64-bit architecture that happens to offer compatibility to existing 32-bit x86 code.
Yeah and a garbageman isn't a garbageman he's a sanitary engineer.
Your use of the phrase "with 64-bit extensions" is FUD
ROFL. Take away 32 bit x86 compatibility and AMD64 has a market worth of approximately zero. Calling it x86 with 64 bit extensions is not only technically accurate but also reflects economic and business reality.
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