Its this terrible cycle of vendors saying they'll support when more people go 64-bit, and people saying they'll go 64-bit when more vendors support it. Lazy vendors are probably one of the biggest hurdels I run in to, as some simply dont support 64-bit or do so poorly, which dissuades users from making that jump. Problems truly realted to 64-bit are few and far between. Vista 64-but support is actually really good. I advise any one who asks at this point in time to go 64-bit. While the support from a lot of places in the area of software or drivers is great, the industry lacks that all together push to get the general user to switch over. Video cards with 512 megs or much more is pretty common. 6 gig kits are being sold for new i7 platforms on triple channel. Given the growth of computers in past years, 32-bit style OS has become a common tripping point for even home users. It all must have a number for Windows to call and there are but so many numbers. People don't know/realize that RAM is RAM is RAM. Which unless you have some more in depth understanding of this system, it is a mystery. Opinion- It amazes me how much this exact question comes up. If your the smart kid in your class, I dragged up and old page going over this is more detail. Once all your non-memory devices, ROMs and other bits and bobs have been given what they need for RAM addresses, Windows gets the rest. So the short of is, you have 4 gigs of addressing for everything inside that little box you play games on. So Windows lets it go first in the memory hand outs. Odds are your card is not going to like you. I dare you to try and limit the RAM your video card can access by some means of BIOS tampering. Windows is smart enough to allocate addressing to other devices, then when its done the remaining go to the OS itself. You got some crazy dual GPU card thats got 1.5 gigs on it, you will probably only have 2.5 gigs in your task manager in Windows. This is why you hear weird rumors of varying amount supported. So what happens is the actual amount you see inside Windows changes based on the total allocation of RAM in your system. It doesn't magically talk to your system. In the end it is all RAM and it must also be addressed by Windows. This (I believe) is RAM that is locked up for that device to use. If you go in to Device manager and look at the resources tab under properties on some of your items under say system devices, you'll see a listing for a memory address. RAM is also allocated to onboard devices as buffers for thier data. Microsoft even says it if your bored.Īll the dry math shows that 32-bit XP supports exactly 4 gigs of ram.
Which is also nearly the exact amount of memory in a 4 gig kit. Which is very close to the exact amount of memory my 64-bit XP shows. Divide by 1.0234375 which is roughly the conversion factor bit to byte and you get 4,196,609,266.
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