fast RAM question

if im building laptop and the option of RAM that imma choose says "Requires 64-bit Vista to recognize full 4GB", does it mean in case of using Vista i can only use the 64-bit one if i want it to reco...(blah blah blah); or it means that i cant use XP or watever and i can only use Vista 64-bit 4 my pc to fully recognize the 4BG?

 

32bit OS's cannot recognize 4GB's of RAM ever. Blah blah blah.......

 

...blah blah blah, guide in sig.

 

ok srry to bother xD
thx

 

However, a 32-bit Vista can recognize more than 3 GB of RAM, if I'm not mistaken. It's just that 2x2GB sticks will show up as 3.2 or 3.4 GB of RAM, I think.

If this is wrong, please feel free to correct me and/or slap me for buying 4GB of RAM for 32-bit Vista on exactly this pretense.

 

I LOL'd hardcore.

To OP: No offense or rudeness intended, but you shouldn't skimp out on the details of your question like that, simply so we can help you more efficiently. Thanks.

 

32bit vista can recognize around 3.5G ram,and with sp1 32bit vista can recognize the full 4g ram.
i think it's better use 32bit sp1 compare to 64bit if you have only 4g,why?

cause if you use 64bit os,you get the extra 500MB Ram,but at the same time your application will run under 64bit data size,means the same application will use more ram then running under 32bit os(you can compare the os's thread such as explorer.exe and other applications you installed yourself).This effect will cut the extra 500MB RAM back~

if you have more than 4g ram,say 6g or 32GB,then only 64bit.

Any one agree with me,or correct me

 

cool lol neva knew sp1 increased ram limit!!!

 

I saw several posts discussing about this but myself haven't test this cause my mobo limit it to 3G
anyone can have a test and post the result here?
if it's true,with sp1 you get full 4g,with 64bit you actually have 3.5g~and happy with drivers problems,unsupported games etc

 

guide in sig
guide in sig
guide in sig

and...updated

 

That's not going to be true, depending upon OS and hardware. Specifically, it's not true for any OS and hardware worth buying.

 

Vista sp1 cannot recognize 4GB of RAM it recognizes the same as with out sp1. Because of consumer ignorance Microsoft caved and made sp1 report installed RAM from BIOS. It has nothing to do with what OS can make use of.
This is from MS document.

The reduction in available system memory depends on the devices that are installed in the computer. However, to avoid potential driver compatibility issues, the 32-bit versions of Windows Vista limit the total available memory to 3.12 GB. See the "More information" section for information about potential driver compatibility issues. Link.

Edit: Oh blah blah blah............

 

32-bit operating systems can address up to, and in some cases, more than 4 GB of RAM with Physical Address Extension (PAE). PAE isn't perfectly reliable, but can allow you to use an entire 4 GB of RAM on a 32-bit operating system (considerably more on some server versions).

That said, Microsoft doesn't list Vista 32-bit as supporting PAE on that page - but the update date was nearly two years before Vista debuted. But, at least with XP 32-bit, it is possible to utilize the full 4 GB. Not necessarily easy or all that reliable (or even that helpful, as most programs cannot utilize more than 2 GB [some can use 3 GB]), but possible.

The easy and reliable way to use a full 4 GB is to get Vista x64 or XP x64. But it is not true that 32-bit operating systems can never use 4 GB or more of memory.

I know that

is the easy answer, but it is not actually accurate. Unless Microsoft is more powerful than God .

 

You silly silly, may I say silly one more time say silly man! Do you not think I know all about that? If you think some form of emulation is OK then my friend in all do respect you are duped! It cuts the performance buy 1/3 just to address the extra RAM you want to see. It requires special apps drivers (most CPU's support). To suggest this to anyone is not responsible, even power users will not benefit from it! Do you want to continue this conversation? Because I will go into brutal detail as to how your suggestion is "sorry" "MOD's" stupid, unhelpful and irrelevant.

Edit: Oh yea! MS does list Vista as supporting PAE! So you can't even get that correct?

Edit: Do the math rocket man! 2^32=4GB's, you want to turn water into wine? Not going to happen!

Learn more before you post!

 

PAE uses 24+12 or 36-bit addressing space.

2^32 will always end up being 4 gigabytes. I stand with my statement.

 

Think of 32bit as a dyslexic kid that can only read 3gb of RAM no matter how hard he tries.