how to upgrade IMac's Hardwares in India....

[greenpeasent]

hi ,
I belong to India. I m having an IMac 24" screen size. I hv purchased it in 2008. Currently its configuration is :
Model Name: iMac
Model Identifier: iMac8,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.8 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 6 MB
Memory: 2 GB
Bus Speed: 1.07 GHz
Boot ROM Version: IM81.00C1.B00
SMC Version: 1.30f1
Serial Number: W88116J7ZE4

graphics card:

ATI Radeon HD 2600 Pro:

Chipset Model: ATI Radeon HD 2600 Pro
Type: Display
Bus: PCIe
PCIe Lane Width: x16
VRAM (Total): 256 MB
Vendor: ATI (0x1002)
Device ID: 0x9583
Revision ID: 0x0000
ROM Revision: 113-B2250L-259
EFI Driver Version: 01.00.259
Displays:
iMac:
Resolution: 1920 x 1200
Depth: 32-bit Color
Core Image: Hardware Accelerated
Main Display: Yes
Mirror: Off
Online: Yes
Quartz Extreme: Supported
Built-In: Yes
Display Connector:
Status: No display connected

HDD:
Intel ICH8-M AHCI:

Vendor: Intel
Product: ICH8-M AHCI
Speed: 3 Gigabit
Description: AHCI Version 1.10 Supported

WDC WD3200AAJS-40VWA1:

Capacity: 298.09 GB
Model: WDC WD3200AAJS-40VWA1
Revision: 58.01D02
Serial Number: WD-WCARW4357284
Native Command Queuing: Yes
Queue Depth: 32
Removable Media: No
Detachable Drive: No
BSD Name: disk0
Mac OS 9 Drivers: No
Partition Map Type: GPT (GUID Partition Table)
S.M.A.R.T. status: Verified
Volumes:
Santosh:
Capacity: 235.88 GB
Available: 82.84 GB
Writable: Yes
File System: Journaled HFS+
BSD Name: disk0s2
Mount Point: /

now i want to upgrade these hardwares to 1 TB or more HDD, NVIDIA Quadrofx graphics card, 6 GB of DDR3 RAM.
but vendor is telling this is not possible.

can anyone help?

 

[knewsom]

iMacs are not intended to be upgraded. You can pretty easily do the RAM and the HD, but the Graphics Card may give you trouble. Do some searching on the forum - I know some people HAVE in the past done some things with GFX cards, but you're quite limited with what's possible. Generally, if you want to upgrade, you need to buy a new machine.