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Windows 7: Which Windows 7 Is Right for You 32-Bit or 64-Bit?

02 Nov 2009   #11
H2SO4

Win7x64
 
 

Quote   Quote: Originally Posted by Night Hawk View Post
Let's see for the typical desktop you won't be seeing any strictly 64bit cpus for the time being. The present cpus available simply support the 64bit OSs as well as the 32bit.
That's what I was alluding to in responding to Jimbo's post.

The only processor supported by Win7 that's capable of operating in something you'd call a "64-bit mode" is the x64, a.k.a. x86-64, a.k.a. AMD64, a.k.a. EM64T.

It is just as happy executing 32-bit code and it does so "natively" (in hardware) without any form of emulation being required or employed. There is no "instruction fiddling" taking place - the processor just sits in a 32-bit mode.


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02 Nov 2009   #12
Night Hawk

W7 Ultimate x64/W10 Pro x64 dual boot main build-remote pc W10 Pro x64 Insider Preview/W7 Pro x64
 
 

For anyone interested a good description of what H2SO4 is pointing out there can be seen at What is EM64T (Intel 64)?
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02 Nov 2009   #13
Paarkhi

Windows 8.1u1 x64
 
 

32 bit
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02 Nov 2009   #14
chuckr

XP_Pro, W7_7201, W7RC.vhd, SciLinux5.3, Fedora12, Fedora9_2x, OpenSolaris_09-06
 
 

Quote   Quote: Originally Posted by H2SO4 View Post
Quote   Quote: Originally Posted by chuckr View Post
Quote   Quote: Originally Posted by H2SO4 View Post
What's a "native 64-bit CPU"?
"It's a technical explanation beyond the scope of this post" ...
Spoilsport
OK, I'll give 'ya a few...
Good ol' IBM: Deep Blue and ASCI White. Today's RoadRunner and coming soon: Sequoia.

IBM RS64 - Wikipedia, the free encyclopedia

Quote:
... and has been 64-bit from the start...

A lot of famous computers are RS/6000 based, such as the P2SC based Deep Blue supercomputer that beat world champion Garry Kasparov at chess in 1997 and the POWER3 based ASCI White which was the fastest computer in the world 2000-2002.
Where did Microsoft go to get a CPU for the X-Box?
Quote:
1991: MIPS Technologies produces the first 64-bit microprocessor, the R4000, which implements the MIPS III ISA, the third revision of their MIPS architecture.[2] The CPU is used in SGI graphics workstations starting with the IRIS Crimson. Kendall Square Research deliver their first KSR1 supercomputer, based on a proprietary 64-bit RISC processor architecture running OSF/1. 1994: Intel announces plans for the 64-bit IA-64 architecture ...
Windows NT and Windows 2000 'supported' the DEC 64-bit Alpha chip...
Quite the Intel 'announcement'... Then:
Quote:
The Alpha architecture was sold, along with most parts of DEC, to Compaq in 1998. Compaq, already an Intel customer, decided to phase out Alpha in favor of the forthcoming Hewlett-Packard/Intel Itanium architecture, and sold all Alpha intellectual property to Intel in 2001, effectively killing the product.
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02 Nov 2009   #15
chuckr

XP_Pro, W7_7201, W7RC.vhd, SciLinux5.3, Fedora12, Fedora9_2x, OpenSolaris_09-06
 
 

Quote   Quote: Originally Posted by Night Hawk View Post
For anyone interested a good description of what H2SO4 is pointing out there can be seen at What is EM64T (Intel 64)?
Also, since AMD 'innovated' the technology, more at:

x86-64 - Wikipedia, the free encyclopedia

Quote:
The term x86-64 is the original naming of a 64-bit extension to the x86 instruction set specified by Advanced Micro Devices (AMD) and implemented by AMD, Intel, VIA, and others.

AMD later introduced the name AMD64 for marketing purposes; Intel introduced its Intel64 naming soon thereafter.
And more at:

2000 --- AMD x86-64 Announcement
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02 Nov 2009   #16
AvatarOfTheShip

Windows 7 Ult x64
 
 

It's hard to see what all those kids beavering away in Mom's basement are going to need 128 bits for. And frightening...
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04 Nov 2009   #17
coolwalker

Windows 7 and XP Pro 64 Bit (dual)
 
 

64 Bit...no doubt!
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 Which Windows 7 Is Right for You 32-Bit or 64-Bit?




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