If it requires more RAM...

At the Apple Icon at top left>About this Mac, then click on More Info, then click on Hardware> and report this upto but not including the Serial#...

FileVault is an optional MacOS feature that encrypts your Mac's hard drive and all of the data stored on it. You can turn it on during initial setup, or in System Preferences at a later time. The MacBook Air's fanless design is a godsend for anyone who's dealt with noisy, whirring fans that make your laptop sound like a jet engine once it's under a little bit of stress.

Hardware Overview:

Model Name: iMac

Model Identifier: iMac7,1

Processor Name: Intel Core 2 Duo

Processor Speed: 2.4 GHz

Number Of Processors: 1

Total Number Of Cores: 2

L2 Cache: 4 MB

Memory: 6 GB

Bus Speed: 800 MHz

Boot ROM Version: IM71.007A.B03

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SMC Version (system): 1.21f4

Then click on Hardware>Graphics/Displays and report like this...

NVIDIA GeForce 7800GT:

Chipset Model: GeForce 7800GT

Type: Display

Bus: PCI

Slot: SLOT-1

VRAM (Total): 256 MB

Vendor: nVIDIA (0x10de)

Device ID: 0x0092

Revision ID: 0x00a1

ROM Revision: 2152.2

Displays:

VGA Display:

Resolution: 1920 x 1080 @ 60 Hz

Depth: 32-bit Color

Core Image: Supported

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Main Display: Yes

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Mirror: Off

Online: Yes

Quartz Extreme: Supported

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Display:

Status: No display connected

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Jan 4, 2013 2:55 PM