Is this PSU Sufficient?

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yes it's Sufficient for your PC but not a good quality PSU you can get better one and the build I've some comments on it if you don't mind :)

Edit: your build have OC-able MB and locked CPU and old SSD so I'll make a changes to the build if you don't mind ...
this is better build but not OC-able
PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4690 3.5GHz Quad-Core Processor ($224.98 @ NCIX US)
Motherboard: ASRock H97 PERFORMANCE ATX LGA1150 Motherboard ($80.91 @ Newegg)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($72.00 @ Newegg)
Storage: Samsung 840 EVO 120GB 2.5" Solid State Drive ($85.59 @ OutletPC)...

AntonM95

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Aug 8, 2014
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yes it's Sufficient for your PC but not a good quality PSU you can get better one and the build I've some comments on it if you don't mind :)

Edit: your build have OC-able MB and locked CPU and old SSD so I'll make a changes to the build if you don't mind ...
this is better build but not OC-able
PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4690 3.5GHz Quad-Core Processor ($224.98 @ NCIX US)
Motherboard: ASRock H97 PERFORMANCE ATX LGA1150 Motherboard ($80.91 @ Newegg)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($72.00 @ Newegg)
Storage: Samsung 840 EVO 120GB 2.5" Solid State Drive ($85.59 @ OutletPC)
Storage: Seagate Barracuda 2TB 3.5" 7200RPM Internal Hard Drive ($82.98 @ OutletPC)
Video Card: EVGA GeForce GTX 770 2GB Dual Superclocked ACX Video Card ($256.25 @ Newegg)
Case: Cooler Master HAF 912 ATX Mid Tower Case ($39.99 @ Micro Center)
Power Supply: XFX Core Edition 750W 80+ Bronze Certified ATX Power Supply ($74.99 @ Newegg)
Optical Drive: Samsung SH-224DB/BEBE DVD/CD Writer ($14.99 @ Newegg)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($89.98 @ OutletPC)
Wireless Network Adapter: Rosewill RNX-N150PCe 802.11b/g/n PCI-Express x1 Wi-Fi Adapter ($12.10 @ Amazon)
Total: $1034.76
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-10-01 02:29 EDT-0400

and tis OC-able build :
PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor ($234.98 @ OutletPC)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($28.49 @ OutletPC)
Motherboard: Gigabyte GA-Z97MX-Gaming 5 Micro ATX LGA1150 Motherboard ($106.98 @ NCIX US)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-2133 Memory ($78.30 @ Newegg)
Storage: Samsung 840 EVO 120GB 2.5" Solid State Drive ($85.59 @ OutletPC)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($54.99 @ Amazon)
Video Card: XFX Radeon R9 280X 3GB Double Dissipation Video Card ($249.99 @ Newegg)
Case: Cooler Master HAF 912 ATX Mid Tower Case ($39.99 @ Micro Center)
Power Supply: XFX Core Edition 750W 80+ Bronze Certified ATX Power Supply ($74.99 @ Newegg)
Optical Drive: Samsung SH-224DB/BEBE DVD/CD Writer ($14.99 @ Newegg)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($89.98 @ OutletPC)
Wireless Network Adapter: Rosewill RNX-N150PCe 802.11b/g/n PCI-Express x1 Wi-Fi Adapter ($12.10 @ Amazon)
Total: $1071.37
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-10-01 02:40 EDT-0400

and both at the same range of price :)
my regards
 
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