I bought the HP p6320uk roughly a year and a half ago and the graphics card on the pc is really poor, I believe its the ATI radeon HD 5450.
The problem is that I read HP has silly motherboards that wont support normal graphics cards and I am not sure what the best upgrade would be.
I am willing to spend roughly £150-£200 on a new graphics card as I don't just play wow the extra power is always needed, although a cheaper one would be lovely.
Any advice/help would be lovely and greatly appreciated.
Thanks in advance
Firstly there's your case, I'm not entirely sure you could fit a proper sized GPU in there without airflow problems. You've got a mATX (MS-7613 model number) and it does have a PCI expree x16 slot so you can install any current GPU on the motherboard, the issue is space in your case and the power supply.
You've only got a 300W PSU, a generic one at that. You'd have to upgrade the PSU and GPU and most likely the case if there are size issues. Check out some 6870s to start but I doubt they'll fit.
The 6870 as mentioned above would be my bet, but as also said above, you'd need to upgrade the power supply, to something around the 600-650W mark, such as these, which range in price from £30 to £80.
In terms of the GPU, the ATI 6850 or 6870 cards are most within your budget. Dropping to the 6850 might allow you to upgrade the PSU as well, though.
Again, as mentioned above, this all depends on the size of the case. You will definitely need to upgrade the PSU to use current GPUs.