according to :
Here are the Counter-Strike: Global Offensive system requirements (minimum)
CPU: Intel Core 2 Duo E6600 or AMD Phenom X3 8750 processor or better
RAM: 2 GB, OS: Windows 7/Vista/XP
VIDEO CARD: Video card must be 256 MB or more and should be a DirectX 9-compatible with support for Pixel Shader 3.0
PIXEL SHADER: 3.0 VERTEX SHADER: 3.0 DEDICATED VIDEO RAM: 256 MB
your PC is good enough and the video card will manage , the last question will it fit the SFF case, in theory the low profile card should...
as I learned not all SFF cases are made the same I have a Dell SFF and the video card GT 710 LP is too wide because dell has the video card pcie slot closest to the case... to force you to buy their spec'ed out version of the video card that will fit in the case.
I would search for HP 8000 and video cards known to fit, if your lucky that card will be mentioned a lot if not then I would be doubtful it does.,