I am planning on getting a new graphics card because mine is abit outdated right now, geforce 6200 turbo :p, anyways I know I can obviously support nvidia cards which is what I plan to get, although I'm not sure about the power supply and some other things, also maybe I could get some help on comparing graphics cards. I was thinking about either getting the Gforce 9600 GT or the Geforce 8600 GTS. I do have pci-express and my power supply box says 400w max,not sure if I would need to upgrade or not.
Oh and i also have a pentium D, not sure how much it can handle.

As long as you don't get some of the higher end graphics cards you will be fine. I would get a value card because anything really expensive will either be bottlenecked by your CPU or underpowered by your Power supply.

I have a similar problem.
Here is my system specs. from Everest report.

Computer:
Computer Type ACPI Multiprocessor PC
Operating System Microsoft Windows XP Home Edition
OS Service Pack Service Pack 3
Internet Explorer 8.0.6001.18702
DirectX 4.09.00.0904 (DirectX 9.0c)
Computer Name K9N-NEO (Gaming)
User Name Ben
Logon Domain K9N-NEO
Date / Time 2009-06-26 / 15:03

Motherboard:
CPU Type DualCore AMD Athlon 64 X2, 3100 MHz (15.5 x 200) 6000+
Motherboard Name MSI K9N Neo v1.0 (MS-7260) (3 PCI, 2 PCI-E x1, 1 PCI-E x16, 4 DDR2 DIMM, Audio, Gigabit LAN)
Motherboard Chipset nVIDIA nForce 550, AMD Hammer
System Memory 3328 MB (DDR2-800 DDR2 SDRAM)
DIMM2: Corsair XMS2 CM2X2048-6400C5 2 GB DDR2-800 DDR2 SDRAM (5-5-5-18 @ 400 MHz) (4-4-4-13 @ 270 MHz)
DIMM4: Corsair XMS2 CM2X2048-6400C5 2 GB DDR2-800 DDR2 SDRAM (5-5-5-18 @ 400 MHz) (4-4-4-13 @ 270 MHz)
BIOS Type AMI (09/06/07)
Communication Port Communications Port (COM1)

Display:
Video Adapter NVIDIA GeForce 9800 GT (512 MB)
3D Accelerator nVIDIA GeForce 9800 GT
Monitor Acer AL1715 [17" LCD] (ETL2102157)

Multimedia:
Audio Adapter Realtek ALC883 @ nVIDIA nForce 550 (MCP55) - High Definition Audio Controller

Storage:
IDE Controller Standard Dual Channel PCI IDE Controller
IDE Controller Standard Dual Channel PCI IDE Controller
IDE Controller Standard Dual Channel PCI IDE Controller
Floppy Drive Floppy disk drive
Disk Drive ST380815AS (80 GB, 7200 RPM, SATA-II)
Disk Drive USBDisk RunDisk USB Device (3 GB, USB)
Disk Drive WDC WD3200AAKS-00L9A0 (298 GB, IDE)
Optical Drive TSSTcorp CD/DVDW SH-S182D (DVD+R9:8x, DVD-R9:8x, DVD+RW:18x/8x, DVD-RW:18x/6x, DVD-RAM:12x, DVD-ROM:16x, CD:48x/32x/48x DVD+RW/DVD-RW/DVD-RAM)
SMART Hard Disks Status OK

I used to have a Palit gefore 7900gt/gto 512mb and the new 9800gt 512mb isn't running as good as the 7900gto.
I'm quite disapointed in the 9800gt.

Should i upgrade the motherboard to something newer or get a better video card?
In which case what should i get to either suit the MSI K9N Neo (PCB V1.0) or a better motherboard to suit the 9800gt?

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