Upgrade h9-1120t with GTX-960 any potential problems?

[jacedeuce]

I would like to get someone to double check (without discounting) what I'm doing here because it's my first attempt to really mess with the insides of a computer.

I have an HP h9-1120t that has an old GT 545 that I think is really holding back the performance of the machine. I'm going to upgrade that card to a GTX-960 (EVGA GeForce GTX 960 04G-P4-3969-KR 4GB FTW GAMING w/ACX 2.0+). With my computer specs, do you see any potential issues or other culprits that could increase performance short of scrapping the whole box and starting over?

PSU - DPS-600WB A: http://www.deltaww.com/Products/CategoryListT1.aspx?CID=010101&PID=ALL&hl=en-US

CPU - Intel Core i7-3770 Ivy Bridge-DT

Memory - 10 GB DDR3-1333 / PC3-10600 DDR3 SDRAM UDIMM

Storage
Hitachi HDS723020BLA642 - 2TB
Samsung SSD 850 EVO - 500GB

Graphics - MSI N545GT (MS-V231) (GeForce GT545) 3GB DDR3 SDRAM

Motherboard - PEGATRON CORPORATION 2AD5

Thanks in advance for any ideas.

 

[jacedeuce]

I've already gone ahead and installed the new GPU and it's working great. I am able to run Diablo 3 and Starcraft 2 on max settings at 1080p and my GPU hangs out around 65 C with the fan at 0%. If I run the fan at 100% the temp drops to around 45 C and at 40% fan the GPU temp is around 60. No issues at all with power. The space inside my case was pretty tight, so I'd be leery about installing a graphics card that is any larger. The fan is also very loud at 100%, but I don't anticipate needing to run it at any speed over 50, so that is not an issue for me.