Ideal/Optimum Partitions

[lahratla]

I have a PC with 80GB 7200rpm SATA HDD with Windows XP+SP2 installed and partitioned the same into five NTFS partitions using Partion Magic 8.0 as:

C for OS and Programs - 6.65 GB
D for Games - 15.0 GB
E for My Documents - 2.18 GB
F for Audios and Videos - 18.2 GB
G for Backups - 12.6 GB

What would be the ideal/optimum partitions for my PC? Also, what is the advantage of creating dedicated partition for page files and how do I go about it? And what is NCQ?

The rest of my configuration is:-

AMD Athlon 64 3200+ (939) Processor,
MSI RS480M-IL Motherboard,
80 GB SATA 7200 rpm Seagate Baracuda
2x256 PC 3200 DDR 400 MHz RAM
400 W PSU
Sony DVD/CD-RW Combo Drive
Acer AC713 17" CRT
APC Back-UPS 500 UPS
Creative Inspire 4400 4.1 Speakers
Samsung Pleomax Keyboard
Logitech Optical Mouse

[sms_solver]

C for OS and Programs - 6.65 GB

is not going to be enough space in a longer run!!

go for atleast 10GB for C and OS and programs

[Kniwor]

my partitoning

c:\ ----system-------------------6.8 Gb
D:\...audio & video---------- 150.0Gb
E:\-------games----------------50.0Gb
F:\--primary partition---------25.4Gb

F is for basically playing around, reformatting, linux install and it get reformatted again and again....