Vista Ultimate x64 and 8 GB RAM??

I have recently swapped my OCZ 4GB (1GBX4) DDR2 @ 800 MHZ and upgraded to OCZ 8GB Sli (2GBX4) @ 800 MHZ on my Ultimate X64 bit.

Installed flawlessly, but can someone please give me a logical answer as to why on my system properties it shows only 7,678MB of memory??

I thought X64 OS shows all memory, and I know my mobo can handle up to 8GB @800MHz.
Also, I have installed every single Windows update, and after the upgrade to 8GB, I can see a definite increase in performance.

Thanx

8GB is simply unnecessary with the technologies of today.
No application, game or even hardware does require such a quantity of RAM, which will only be useful in 4 to 5 years with 64bit applications... 4Gb is ideal and enough to run Vista 64 very well.

Asus A8R32-MVP Deluxe
AMD 64 Dual Core 4400+
Radeon HD 2900 XT 1GB
4GB RAM Corsair
WD Raptor 150GB
Vista 64

Runs great, even games like Crysis in 64bit.

I had 4GB, and it showed all 4GB, but I had the opportunity to upgrade to 8GB.
Assuming that if you were running a 64 bit operating system, it would show all 8GB.

I guess I'm ahead of the times.

Thanx.

Chances are that one or more of the devices on your motherboard are still using 32-Bit addressing on a hardware level. The usual suspects are graphics and/or hard disk controllers.

Vista shows the available system ram as reported by the BIOS. One of the small changes in SP1 will be that Vista reports the total installed memory. When you install Vista SP1, you'll see the full 8GB reported.

Oh, and don't let anyone tell you you "don't need 8GB memory". True, there are very few applications that can benefit from that much, but more physical memory allows you to have more applications active at the same time, without the need to use the page file.

I currently have 8 gb of ddr2-667 on my gigabyte x38-dq6 running vista ultimate 64 and under properties it shows i have 8090 MB installed...

Try updating your motherboard bios and try loading the bios defaults...perhaps some system devices are using some ram

Kevin

I just want to say, damn it's just a computer, get out and enjoy life, I like have a good computer too but so much, it's too materialistic and exaggerating, geek like imo.

Some of us do design/video/compositing and even 8gb doesn't feel like enough.

Some even run several virtual machines so ...

I have also 8GB installed and it shows all 8 ..

I too have 8GB and all of my shows up. And how can someone say it's too much and has no purpose ? It's not uber geeky or anything, and with todays memory prices why limit your workflow. Besides, even if you don't chew up all of your extra memory Vista certainly still makes good use of it pre-caching programs.

Well, here's the update, I just installed SP1 FINAL and now it shows all 8 GB of RAM.
What a difference..damn.
Did i say i love my computer...