8600 GT avec Shader 3.0

Salut, je voudrai saoir si c'est normal que ma carte graphique 8600 GT - 512 Mo
n'a que le shader 3.0 ! Il ne devrez pas y avoir shader 4.0 ?
Sur le site https://www.systemrequirementslab.com/cyri
quand je fais une analyse il me dit, exemple pour Crysis:

Minimum:

You Have: 2 processors running - AMD Athlon(tm) 64 X2 Dual Core Processor 6000+
PASS

You Have: 2.99 GHz Performance Rated at 9.00 GHz
PASS

System RAM
Minimum: 1 GB (Windows Vista requires 1.5GB RAM)

You Have: 2.0 GB
PASS

Operating System

You Have: Microsoft Windows XP Home Edition (Build Service Pack 22600)
PASS


Video Card

You Have: NVIDIA GeForce 8600 GT (GeForce 8600 GT)
PASS


Video RAM: Required - 256 MB , You have - 512 MB

Video Card 3D Acceleration: Required - Yes , You have - Yes

Video HW Transform & Lighting: Required - Yes , You have - Yes

Vertex Shader Ver.: Required - 2.0 , You have - 3.0

Pixel Shader Ver.: Required - 2.0 , You have - 3.0

Video Card Driver Version (DirectX)
Your driver version number is: 6.14.11.7474


DirectX Version
Minimum: 9.0c (included)

You Have: 9.0c
PASS

Sound Card

Minimum: Yes
You Have: Realtek HD Audio output
PASS


Minimum: 12 GB
You Have: 295.4 GB
PASS


Merci de la réponse !