Barty1884 :
Can you post your full spec? Ideally, can you list the make/model of your PSU? CyberPower use a variety of components, and usually 'cheap out' a little on the PSU (and motherboard).
While adapters exist to provide you an 8pin connector, I'd recommend confirming that your PSU is of decent quality to begin with. A pretty solid general rule is, if you need an adapter, you shouldn't be running that component from the PSU you have.
It's not a hard & fast rule, but it's worth considering.
*BASE_PRICE: [+1309]
BLUETOOTH: None
CABLE: None
CARE1: Ultra Enhanced Packaging Solution - Protect Your Dream System During Transit [+19]
CARE2: Professional Wiring for All WIRING Inside The System Chassis - Minimize Cable Exposure, Maximize Airflow in Your System [+19]
CAS: Corsair Obsidian 750D w/ USB 3.0, Full Side Panel Window [+103]
CASUPGRADE: RGB Multi-Color 16 color LED 2x interior light strips (top, bottom) w/ Remote Controller [+15]
CC: None
CD: LG 14X Internal Blu-ray Burner, BD-RE, 3D Playback DVD+RW Combo Drive (Black Color)
CD2: None
COOLANT: Standard Coolant
CPU: Intel(R) Core™ i7-5820K Six-Core 3.30GHz 15MB Intel Smart Cache LGA2011-V3
CS_FAN: Maximum 120MM Case Cooling Fans for your selected case [+9]
DOCKINGSTATION: None
ENGRAVING: None
FA_HDD: Vigor iSURF II Hard Disk Drive Cooling System [+21] (1 x System)
FAN: NZXT Kraken X31 120mm Liquid CPU Cooling System w/ Copper Cold Plate - Extreme Cooling Performance [+24] (Single Standard 120MM Fan)
FLASHMEDIA: None
FREEBIE_VC1: FREE! Heroes of the Storm Game Coupon [+0]
HD_M2PCIE: None
HDD: 256GB SANDISK SSD + 2TB SATA III Hard Drive Combo (Combo Drive)
HDD2: None
HEADSET: None
HS_HANGER: None
IUSB: Built-in USB 2.0 Ports
KEYBOARD: AZZA Multimedia USB Gaming Keyboard
MEMORY: 32GB (8GBx4) DDR4/2400MHz Quad Channel Memory (Corsair Vengeance)
MONITOR: None
MOPAD: None
MOTHERBOARD: MSI X99A GAMING 7 ATX w/ USB 3.1, Killer GbLAN, 4x Gen3 PCIe x16, 2 PCIe x1,1x M.2, 8x SATA 6Gb/s, 2x SATA Express (All Venom OC Certified) [+26]
MOUSE: AZZA Optical 1600dpi Gaming Mouse with Weight Adjustable Cartridge
NETWORK: Onboard Gigabit LAN Network
NOISEREDUCE1: Anti-Vibration Fan Mounts [+9]
OS: Windows 8.1 (64-bit Edition)
OVERCLOCK: No Overclocking
POWERSUPPLY: 600 Watts - Standard 80 Plus Certified Power Supply - SLI/CrossFireX Ready
RUSH: Standard Process Time: Ship within 10 Business Day
SERVICE: STANDARD WARRANTY: 3-YEAR [3 Year Labor, 1 Year Parts] LIMITED WARRANTY PLUS LIFE-TIME TECHNICAL SUPPORT
SLI_BRIDGE: MSI GAMING SLI BRIDGE (2-Way L) [+29]
SOUND: HIGH DEFINITION ON-BOARD 7.1 AUDIO
SPEAKERS: None
TEMP: NZXT Sentry-2 Fan Touch Screen Fan Control & Temperature Display [+29]
TUNING: None
TVRC: None
USBHD: None
USBX: None
VIDEO: NVIDIA GeForce GTX 960 4GB GDDR5 PCIe 3.0 x16 (Maxwell) [+14] (Single Card)
WNC: None
WTV: None
my specs