Compatible graphics card for HP Proliant DL360 G7 server

Hello everyone,

Here is my problem. I have an HP Proliant DL360 G7 server with the following specifications:
- 2 Xeon E5620 processors 2.4 GHz
- 24 GB of RAM
- Integrated graphics card: ATI ES1000
- 1 x RS-232
- 1 x Display / VGA
- 1 x SD Slot
- 1 x iLO remote management port
- 4 x RJ 45 Ethernet 10/100/1000
- 4 x USB 2.0
- 1U Rack

This server has a very low-quality graphics card, and I would like to add one via a PCI port. Indeed, this server will need to handle quite powerful graphic software. I know that HP has not tested third-party graphics cards. But apparently, it is still possible. However, I do not know which graphics card is compatible with the server's motherboard. I have already done a lot of research online. Some say that the graphics card should not consume more than 75 Watts, while others say 150 Watts. Who should I believe? In addition, I do not know if certain graphics cards need additional power beyond the PCI port and therefore would not be suitable in my case.
I have already done a bit of searching and found two graphics cards:

=> https://www.amazon.fr/FirePro-Multi-View-graphique-FirePRO-encombrement/dp/B002MWG8O6/ref=sr_1_2?ie=UTF8&qid=1503746833&sr=8-2&keywords=ATI+FirePro+2450
=> https://www.amazon.fr/marque-generique-GV-N1050OC-2GD-4719331339265/dp/B01MEHQT37/ref=sr_1_1?ie=UTF8&qid=1503747029&sr=8-1&keywords=GTX

Here is the technical sheet of the server in question: https://h20195.www2.hpe.com/v2/getpdf.aspx/c04284501.pdf?ver=37

Thank you in advance for your help, which will be valuable to me, and for the time you are willing to spend on it.

Best regards,

NicoInfoServeur