Latest Announcemnent
New thread

64Bit OS on 32Bit Architecture... Whhaaaa

Status
Not open for further replies.
L

litewarez

Active Member
1,367
2008
1
0
At work today i learnt something new, and have not got an answer for it as if yet, but I think i know what i could be down to.

I have a computer 2GB, 32Bit duel core, and I asked my Line Manager if I Can set up and bench a 64Bit processor for a Share point project im doing.

As share point is only available for 64bit systems I needed a 64Bit computer to install the OS and Software, but my manager (Who is extremely cleaver) said to be, you see that 32Bit Mail server we just pulled out, I was like yeaaa, he said install it on that, i said you don't understand i need to install Windows Server 2008 R2 64Bit & Share Point 64Bit.

he said, it will work, true me.. so i started installing the OS and Whollla, 64bit OS running on a 32bit processor, i was confused, i thought this was not possible, so i started thinking how it could work?

I came up with because its Duel Core i thought they was acting as 32Bit + 32Bit, but I didn't think that was possible, and then I realised the board had written on it virtualization so done some research and found out it was a possibility.

Does anyone know exactly why this is possible, and if your unsure, well you know something new :)
 
17 comments
I am sure its to do with CPU Virtualization that 32-bit can project a 64-bit system. It does not have the speed of a 64-bit but it does have the architecture. I think lol
 
If the 32 bit OS sees dual core 64 processors as twin 32 bit processors, the benefit would not be in speed but stamina. Your system should be able to handle more tasks without any slow downs or impact on other operating software. I'd suggest you try playing music, running a video in media player and playing a FPS game to see if the system can handle it.

I base this on the fact that a friend of mine owned a dual processor MB back in the day with two Intel chips on it and was able to do a hell of a lot of multitasking that would have slowed other systems down.

I suspect the same could be true with dual core 64 bit processors running on a 32 bit
 
Does that mean 4 cores is 128bit?

Mis understood the question at first.

I remember running xp 64 bit on a shit celeron processor i had. it was a 1.8 Single Core.
or maybe it was a Pentium 4 2.66Ghz. single core again.

whats the big mystery?
 
x86-64 is an extension of the x86 instruction set.

It supports vastly larger virtual and physical address spaces than are possible on x86, thereby allowing programmers to conveniently work with much larger data sets. x86-64 also provides 64-bit general purpose registers and numerous other enhancements.

The original specification was created by AMD, and has been implemented by AMD, Intel, VIA, and others. It is fully backwards compatible with 32-bit code.

Because the full 32-bit instruction set remains implemented in hardware without any intervening emulation, existing 32-bit x86 executables run with no compatibility or performance penalties,[2] although existing applications that are recoded to take advantage of new features of the processor design may see significant performance increases.

After launching the architecture under the "x86-64" name, AMD renamed it AMD64 in 2003;[3] Intel initially used the names IA-32e and EM64T before finally settling on Intel 64 for their implementation. x86-64 is still used by many in the industry as a vendor-neutral term. The term x64 is used by some vendors as shorthand for x86-64.

The AMD K8 core was the first to implement the architecture; this was the first significant addition to the x86 architecture designed by a company other than Intel.

Intel was forced to follow suit and introduced a modified NetBurst family which was fully software-compatible with AMD's design and specification.

VIA Technologies introduced x86-64 in their VIA Isaiah architecture, with the VIA Nano.

The x86-64 specification is distinct from the Intel Itanium (formerly IA-64) architecture, which is not compatible on the native instruction set level with either the x86 or x86-64 architectures.
 
NoVa has it.

and EvilGenius, you were probably able to do that because the CPU supported 64bit architectures.

and no 4 cores does not constitute 128bit.
 
Gav0 said:
Im sure you can run x64 or x86 with any system that has more than one CPU core
Click to expand...
Not true! i have a few SuperMicro Server laying in my bedroom with 2 procesors each, they can't run any 64x OS
[SLIDE]http://private.curashare.net/photo3.jpg[/SLIDE]
 
Its not that the dual core server handles 32 bit and 32 bits..

Processor architecture depends on their instruction set and their word.

A 32bit processor instruction set has arithmetic operations such as ADD, SUB, MUL, etc.. and logic operations such as OR, XOR, AND, Shift left, shift right, etc..It can process 32 bits - word at a time.

A more advanced processor would have more complex instruction sets such as Square Root and its word contains more bits.

Logically speaking, 64 bits processor would handle complex processes more rapidly than a 32 bits processor.

Now, for a 32 bits processor to be able to handle features of a 64 bit software, it would then need to use its simple instructions to do complex instructions.
For example, to do a square root, it would have to do a series of simple Additions, subtractions or multiplications.

I don't think there are such mathematical formulae..

So, I don't think its possible for a 32bit processor to run 64 bits software. Correct me if am wrong.

Note: For those who don't know, Add, sub, mul, sqr root are Assembly Language Codes.

Any high level language(C, C++, Php, html, whatever) --> Assembly --> 0's and 1's for your computer to understand.
 
Most of the Dual core processor support 64 bit architecture so it can install both 32 and 64 bit OS

also the main difference between 32bit os and 64 bit os is that 64-bit version of Windows can use more memory—4 GB (gigabytes) or more—and a 32-bit version of Windows is limited to about 3.5 GB or less Ram.
here is an excerpt from microsoft
Computers with a 64-bit processor can run either a 32-bit or 64-bit version of Windows just fine. So it doesn’t matter too much which version of Windows you install on most PCs with a 64-bit processor—unless you want to be able to use more than 3.5 GB of memory.
Click to expand...

http://windows.microsoft.com/en-US/windows7/taking-the-mystery-out-of-64-bit-windows
 
As i said, 64 bits processor has more complex instruction set in addition to simple instructions.

so a 64 bits processor can run 32 bits software but it does not work the other way round. A 32 bit processor cannot run 64 bits software.

Also, the main difference between a 64 and 32 bits processor is not their memory capacity but their complexity and performance.
 
Also, the main difference between a 64 and 32 bits processor is not their memory capacity but their complexity and performance.
Click to expand...

if you read carefully i am not talking about processors when referring to memory but about Windows
 
Status
Not open for further replies.
Back
Top