You need to ask these questions before you drop your money on a low quality power supply.
So now that you have this, I want you to keep this thought in the back of your head. "If my computer starts rebooting or locking up or crashing when I play games, its very likely that my cheap, low quality, power supply is probably the reason."
Yea but I just bought this PSU and I cant afford to buy a new one. I know its not good for PSU to work at high usage but I just want to know will it work and wont crash.
You need to ask these questions before you drop your money on a low quality power supply.
So now that you have this, I want you to keep this thought in the back of your head. "If my computer starts rebooting or locking up or crashing when I play games, its very likely that my cheap, low quality, power supply is probably the reason."
CPU is non overclockable and I wont be overclocking the gpu. Ive seen some test and 970 shouldnt take more than 150-180W and xeon takes about 80W. The rest should take maybe 50W but not more. So 80+180+50= 310 am I right? I also seen this test so I should be fine http://www.overclock3d.net/articles/power_supply/how_many_watts_do_you_actually_need/1
It's your call, all we can do is offer advise, if the PSU goes, it's likely to take things with it like mobo, CPU, DRAM etc, which is why you should never skimp on a PSU, especially one with cheap caps, believe these still use the CapXon capacitors
One other thing I want to bring up.. You mentioned that the Xeon needs 80 watts. Well, the Xeon has a TDP of 80 watts. That is not its power draw. That is Thermal Design Power... This is pretty much the amount of power that will likely be dissipated as heat. Even that number can be exceeded. I have not found an actual power used number for that processor yet. I will keep looking. But I am going to assume for now that the actual power draw is likely to be in the 125w to 135w range. And that is enough to possibly throw your power supply numbers off on the options available.
It took years for the Corsair VS line to get demoted to Tier 4. Which means not suitable for any gaming system. It is fairly rare that a power supply gets demoted like this. It takes tons of problems with those units that simply could not be seen when the unit was new and being reviewed for the first time. But it has happened to Corsair CX, CXM and now VS lines.
Are you seeing the same pattern that I am?
So now that we have seen 3 different models of Corsair power supplies get demoted, all on the lower end of the power supply food chain, is this what you want in your system?