how many watts SMPS do I need to power my PC.

[Saurabh_25]

here are the details of my PC

Gigabyte x99 ud4 motherboard
5 x 8GB ddr4 2133 MHz RAM
Nvidia gtx 960 4GB
intel core i7 5820k
corsiar hydro gtx 100i
CM 690 III cabinet
4tb HDD seagate 7200 rpm
250 gb SSD kingston
22 inch LED monitor

I am using 600W SMPS right now but I dont know if its enough or not.

 

[RetiredChief]

Way I determine what size PSU I need is to add the Max Power for the CPU and GPU, Multiply by 2.
The +12 V is what is Important.
CPU 140 Watts MAX
GTX960 120 Watts Max (10W idle and typically 100 Watts Gaming
140 + 120 = 260 X 2 = 520 Watts So Min would Be a HIGH quality Tier 1 @ 450 Watts or a 500+ watt Tier 3 PSU.
Looking at the +12 V Rail = Must Be 1.25 X 260 Watts as a absolute MINIMUM.
OK. What you need to look at is the +12V rating Which in this case is a MAX of 260 Watts (User will be less) Then you must add in other components that use the +12V PLUS all other rails (+5V and +3.3V).
NOTE - Just looking at max power as if you add up the different rails that total will exceed The PSU rated max in 98% of PSUs ( ie if you added all the rail max ratings you might get 600 watts for a PSU rated at 500 Watts - So the PSU can NOT provide the rated Power on all rails at the same time.

PS: 600 Watt PSU does not tell much, Need to specify WHICH one, and Yes a Tier 3 or Better 600 W PSU would work.

 

[Saurabh_25]

Way I determine what size PSU I need is to add the Max Power for the CPU and GPU, Multiply by 2.
The +12 V is what is Important.
CPU 140 Watts MAX
GTX960 120 Watts Max (10W idle and typically 100 Watts Gaming
140 + 120 = 260 X 2 = 520 Watts So Min would Be a HIGH quality Tier 1 @ 450 Watts or a 500+ watt Tier 3 PSU.
Looking at the +12 V Rail = Must Be 1.25 X 260 Watts as a absolute MINIMUM.
OK. What you need to look at is the +12V rating Which in this case is a MAX of 260 Watts (User will be less) Then you must add in other components that use the +12V PLUS all other rails (+5V and +3.3V).
NOTE - Just looking at max power as if you add up the different rails that total will exceed The PSU rated max in 98% of PSUs ( ie if you added all the rail max ratings you might get 600 watts for a PSU rated at 500 Watts - So the PSU can NOT provide the rated Power on all rails at the same time.

PS: 600 Watt PSU does not tell much, Need to specify WHICH one, and Yes a Tier 3 or Better 600 W PSU would work.

currently I am using Cooler master B600 ver.2

 

[RetiredChief]

SEE: http://www.tomshardware.com/answers/id-2427840/600w-cooler-master-b600-gamer.html

 

[Saurabh_25]

SEE: http://www.tomshardware.com/answers/id-2427840/600w-cooler-master-b600-gamer.html

first of all, Thank you so much for answering my question. Actually my I am facing some sudden restarts on my PC without even any fluctuation in power. So, I thought it could be a problem with my PSU.

P.S. My PC is connected to Microtek UPS double battery inverter 2k VA. Do you have any idea about that ?

 

[RetiredChief]

Take a look at your +5 and +12 Voltages - either a software monitoring (Ie HWMonitor), or by using a voltmeter (Multimeter). If voltages are OK at Idle then check under load. For load you can run CPUID-CPU-Z (Under Bench start stress test) and/or Furmark in a window.
In Both you must also monitor your temps, in addition to voltage.
Can Rule out UPS by plugging into wall and Bypass UPS. Normally UPS do NOT cause restarts.