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Wattage Buffer?

Wiggly Jiggles
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Hey Techies!

 

I'm getting a PC soon that has as "estimated wattage of 705W"

With this system, I'm getting a 750W power supply (Corsair Professional Gold 750W 80 PLUS Gold Certified ATX12V / EPS12V Power Supply)

 

Is this enough of a 'buffer' or should I up to a 800W?

Production Control, Fish Keeper, Lover of Audio

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TBH you dont really need that much power i have a pretty ncie system and the highest wattage its ever reached was 300.

|Casual Rig| CPU: i5-6600k |MoBo: ROG Gene  |GPU: Asus 670 Direct CU2 |RAM: RipJaws 2400MHz 2x8GB DDR4 |Heatsink: H100i |Boot Drive: Samsung Evo SSD 240GB|Chassis:BitFenix Prodigy |Peripherals| Keyboard:DasKeyboard, Cherry MX Blue Switches,|Mouse: Corsair M40

|Server Specs| CPU: i7-3770k [OC'd @ 4.1GHz] |MoBo: Sabertooth Z77 |RAM: Corsair Vengeance 1600MHz 2x8GB |Boot Drive: Samsung 840 SSD 128GB|Storage Drive: 4 WD 3TB Red Drives Raid 5 |Chassis:Corsair 600t 

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The system will be like such:

(including watercooling stuff)

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU:  Intel Core i5-3570K 3.4GHz Quad-Core Processor  (£167.99 @ Aria PC)
Motherboard:  Asus P8Z77-V PRO ATX  LGA1155 Motherboard  (£164.99 @ Amazon UK)
Memory:  Corsair Vengeance 16GB (4 x 4GB) DDR3-1600 Memory  (£99.30 @ Dabs)
Storage:  Plextor M5S Series 256GB 2.5" Solid State Disk  (£119.99 @ Aria PC)
Storage:  Plextor M5S Series 256GB 2.5" Solid State Disk  (£119.99 @ Aria PC)
Storage:  Western Digital Caviar Black 2TB 3.5" 7200RPM Internal Hard Drive  (£119.99 @ Ebuyer)
Storage:  Western Digital Caviar Black 2TB 3.5" 7200RPM Internal Hard Drive  (£119.99 @ Ebuyer)
Video Card:  MSI GeForce GTX 770 2GB Video Card (2-Way SLI)  (£335.99 @ Aria PC)
Video Card:  MSI GeForce GTX 770 2GB Video Card (2-Way SLI)  (£335.99 @ Aria PC)
Case:  NZXT Phantom 820 (Black) ATX Full Tower Case  (£179.99 @ Aria PC)
Case Fan:  Corsair Air Series AF120 Performance Edition (2-Pack) 63.5 CFM 120mm  Fans  (£17.70 @ CCL Computers)
Case Fan:  Corsair Air Series SP120 High Performance Edition (2-Pack) 62.7 CFM 120mm  Fans  (£21.98 @ CCL Computers)
Case Fan:  Corsair Air Series SP120 High Performance Edition (2-Pack) 62.7 CFM 120mm  Fans  (£21.98 @ CCL Computers)
Power Supply:  Corsair Professional Gold 750W 80 PLUS Gold Certified ATX12V / EPS12V Power Supply  (£133.25 @ CCL Computers)
Optical Drive:  Samsung SH-222BB/BEBE DVD/CD Writer  (£14.98 @ Amazon UK)
Monitor:  ViewSonic VX2453mh-LED 24.0" Monitor  (£142.14 @ CCL Computers)
Monitor:  ViewSonic VX2453mh-LED 24.0" Monitor  (£142.14 @ CCL Computers)
Other: AmazonBasics High-Speed HDMI Cable 6.5 Feet x2
Other: Perixx H1000 Iron Mouse
Total: £2258.38
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-05-31 20:36 BST+0100)

Production Control, Fish Keeper, Lover of Audio

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