what does 64bit in "8Gb - 64bit" means?

[ztein]

Hi.
What does the 64bit stands for in memory description such as "8Gb - 64bit"?
Is 8Gb - 64 bit better than 4Gb - 32bit(i assume)?
Thx.

[SuperSparks]

Where are you seeing this description?

[Train]

32bit can only use 4g in total and the 64bit 8g
remember 32bit will see about 3.2 GB.
And most mobos only have 4 slots for ram. Thus the 8 GB limit.

Vista 64 will reach the upper limit if the mobo will take 2GB sticks in the 4 slots.

[Train]

Then again you might be interested in 8 ram slots.
http://www.xbitlabs.com/news/mainboa...IMM_Slots.html

Other than that, try server mobos.
Example:
http://www.tyan.com/

Be prepared for sticker shock! Like $1200 for a mobo.

[ztein]

no i just saw my mobo description and where it says "Memory Suported: 8Gb- 64bit" is confusing me, since i have no idea what is 64bit stads for and are there any other bits like 32bit, 128bit?

[SuperSparks]

I am 99% sure that it is referring to a bus width, whether data bus or address bus isn't clear. I can't seem to find a reference to it in my digging so far.

[Train]

64 bit in that case means that should you have the correct operating system, you can use 8 GB of ram.

64 bit definitions.
http://en.wikipedia.org/wiki/64-bit

Microsoft 64 bit computing.
http://www.microsoft.com/servers/64bit/overview.mspx


Up until XP 64 bit OS, which has a case of no drivers, so forget it.
Vista 64 is the first NON-Server OS that you and I can use.

Something to concider.

If you want to be sure that your PC will be able to take advantage of increased memory and new hardware and software in the years ahead, a 64-bit PC is a good choice. If you run a lot of programs at once and switch back and forth between them often, a 64-bit PC can give you a more seamless, instantaneous response. And the more memory you have in your PC, the more programs you can run smoothly and simultaneously. If you only run one or two programs at the same time, a 32-bit PC is a fine choice.

http://www.microsoft.com/windows/win...ns/64-bit.aspx

[Platypus]

I'm inclined to agree with SuperSparks, a Google search finds this phrase used frequently and the context indicates the data width of non-parity DIMMS, 64bit, in comparison for example with 32bit width for 72 pin SIMMs, or 72bit width for parity DIMMs.

To compare, search for the same phrase with "ECC" substituted for "64bit". For example this search finds 3 ASUS server motherboards where the specification says "Maximum Memory Supported: 8GB ECC", which is 72bit memory.

In other words, the "64bit" means use non-parity (non ECC) DIMMs in this board.

[ztein]

ah, i see
thx