Windows 8.1 shows Directx 11

Hi guys, i have windows 8.1 pro and i basically upgraded to windows 8.1 to get performance in battlefield 4 and it does give me that boost.
But if i go dxdiag, under system information it says Direct x 11 only, so i was wondering if that is Direct x 11.1 and is just named as Direct x 11 in windows 8?
And if not than can any1 tell me where can i get the latest version from coz windows update hasn't given me yet.
System spec:
Amd phenom || X4 840 3.20 Ghz
8GB Ram
Nvidia Geforce Gtx 570
2 answers Last reply Best Answer
More about windows shows directx
  1. ur GPU will not support DX11.1
  2. Best answer
    The GTX 570 does not support DirectX 11.1, so dxdiag will only show DirectX 11. Not even the 600 series Geforce cards fully support 11.1.
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