On the side of my PC is written:
Acer Espire M3970
Windows 7 Home Premium 64-bit
Intel core i5 processor 2300
1 TB hard disk
Amd Radeon HD 6540 to 4095MB
8 GB Ram DDR3

But in my dxdiag is written:
Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.110622-1506)
Language: Dutch (Regional Setting: Dutch)
System Manufacturer: Acer
System Model: Aspire M3970
BIOS: BIOS Date: 04/19/11 13:43:56 Ver: 04.06.04
Processor: Intel(R) Core(TM) i5-2300 CPU @ 2.80GHz (4 CPUs), ~2.8GHz
Memory: 8192MB RAM
Available OS Memory: 8174MB RAM
Page File: 2649MB used, 13697MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
Card name: NVIDIA GeForce GT 440
Manufacturer: NVIDIA
Chip type: GeForce GT 440
DAC type: Integrated RAMDAC
Display Memory: 4063 MB
Dedicated Memory: 1503 MB
Shared Memory: 2559 MB
Current Mode: 1680 x 1050 (32 bit) (59Hz)
Monitor Name: Generic PnP Monitor
Monitor Model: JT229x1-1
Native Mode: 1680 x 1050(p) (59.954Hz)

So which one is true? And is that one better than the other one?