Cyberpower build (DIDN't UPGRADE PSU)

*BASE_PRICE: [+1335]
BLUETOOTH: None
CARE1: Ultra Enhanced Packaging Solution - Protect Your Dream System During Transit [+19]
CAS: CYBERPOWERPC X-Titan 200 Full Tower Gaming Case w/ USB 3.0, Fan Control, EZ Swap HDD Dock, Side Panel Window (Black Color)
CASUPGRADE: None
CD: LG 12X Internal Blu-ray Drive & DVDRW, 3D Playback Combo Drive (BLACK COLOR)
CD2: None
COOLANT: Standard Coolant
CPU: Intel® Core™ i7-4770K 3.50 GHz 8MB Intel Smart Cache LGA1150 (All Venom OC Certified)
CS_FAN: Default case fans
ENGRAVING: None
FA_HDD: None
FAN: Corsair Hydro Series H60 High Performance Liquid Cooling System 120MM Radiator & Fan (Single Standard 120MM Fan)
FLASHMEDIA: None
FREEBIE_VC1: Assassin's Creed Black Flag Game Coupon [+0]
FREEBIE_VC2: NVIDIA Free To Play Phase 2 - Never Winter, Warframe , and Marvel Heroes [+0]
HDD: 2TB (2TBx1) SATA-III 6.0Gb/s 64MB Cache 7200RPM HDD (Single Drive)
HDD2: None
HEADSET: None
IUSB: Built-in USB 2.0 Ports
KEYBOARD: AZZA Multimedia USB Gaming Keyboard
MB_SRT: None
MEMORY: 8GB (4GBx2) DDR3/1866MHz Dual Channel Memory (ADATA XPG V2)
MONITOR: None
MONITOR2: None
MONITOR3: None
MOTHERBOARD: ASUS Z87-K ATX w/ GbLAN, 2 PCIe x16 (1 Gen3, 1 Gen2), 2 PCIe x1, 3 PCI
MOUSE: AZZA Optical 1600dpi Gaming Mouse with Weight Adjustable Cartridge
NETWORK: Onboard Gigabit LAN Network
NOISEREDUCE1: Sound Absorbing Foam on Side, Top And Bottom panels [+29]
NOISEREDUCE2: Power Supply Gasket [+5]
OS: Microsoft® Windows 8.1 (64-bit Edition) + Office 365 FREE 30 Days Trial
OVERCLOCK: Pro OC (Performance Overclock 10% or more) [+19]
POWERSUPPLY: 800 Watts - Standard 80 Plus Certified Power Supply - SLI/CrossFireX Ready
RUSH: RUSH!!! READY TO SHIP IN 3 BUSINESS DAYS [+69]
SERVICE: STANDARD WARRANTY: 3-YEAR LIMITED WARRANTY PLUS LIFE-TIME TECHNICAL SUPPORT
SOFT1: McAfee AntiVirus Plus 2014 [+0]
SOUND: HIGH DEFINITION ON-BOARD 7.1 AUDIO
SPEAKERS: None
TEMP: None
TUNING: Intel® Core™ i7-4770K Performance Tuning Protection Plan by Intel [+29]
TVRC: None
USBFLASH: None
USBHD: None
USBX: None
VIDEO: NVIDIA GeForce GTX 770 2GB GDDR5 16X PCIe 3.0 Video Card (EVGA Superclocked ACX Cooling [+0])
VIDEO2: None
VIDEO3: None
WNC: None
_PRICE: (+1505)


This is the build I got for $1429 with a 5% off code. It should arrive within the next 3-4 days but like an idiot I didn't upgrade the PSU. I've never built a computer before and was wondering if I need to upgrade it myself and how I would go about it