Simple Questions - August 10, 2016

Is there any benefit to buying a power supply with more wattage than needed? I currently have a 950w and I'm going to be upgrading soon as preventative maintenance because of the current ones age/hrs of usage. I'm thinking of getting a 1000w-1200w but not sure if it's needed.

My current build:

PCPartPicker part list / Price breakdown by merchant

Type Item Price
CPU Intel Core i7-4790K 4.0GHz Quad-Core Processor $341.98 @ Newegg
CPU Cooler Corsair H100i v2 70.7 CFM Liquid CPU Cooler $96.99 @ Best Buy
Motherboard MSI Z97-GAMING 7 ATX LGA1150 Motherboard -
Memory G.Skill Ripjaws X Series 16GB (4 x 4GB) DDR3-1333 Memory $89.99 @ Newegg
Storage Samsung 850 EVO-Series 500GB 2.5" Solid State Drive $156.88 @ Amazon
Storage Hitachi Deskstar 7K4000 4TB 3.5" 7200RPM Internal Hard Drive -
Storage Hitachi Deskstar 7K4000 4TB 3.5" 7200RPM Internal Hard Drive -
Storage Toshiba X300 6TB 3.5" 7200RPM Internal Hard Drive $209.99 @ Newegg
Storage Toshiba X300 6TB 3.5" 7200RPM Internal Hard Drive $198.30 @ B&H
Video Card MSI GeForce GTX 980 Ti 6GB Video Card (2-Way SLI) $620.82 @ Amazon
Video Card MSI GeForce GTX 980 Ti 6GB Video Card (2-Way SLI) $620.82 @ Amazon
Case Corsair 900D ATX Full Tower Case $324.99 @ Newegg
Power Supply Corsair Enthusiast 950W 80+ Bronze Certified ATX Power Supply -
Optical Drive Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer $16.88 @ OutletPC
Operating System Microsoft Windows 10 Pro Full 32/64-bit $199.99 @ B&H
Monitor Asus VG248QE 24.0" 144Hz Monitor $251.99 @ Best Buy
Monitor Asus VX239H 23.0" 60Hz Monitor $299.99 @ Amazon
Monitor Asus C622AQ 21.5" 60Hz Monitor $159.99 @ SuperBiiz
Keyboard Corsair K95 RGB Wired Gaming Keyboard -
Mouse Logitech G600 MMO Gaming Mouse Wired Laser Mouse $39.99 @ Best Buy
Headphones Sennheiser HD 598 Headphones $147.52 @ Amazon
Headphones Corsair Vengeance 2100 7.1 Channel Headset -
Speakers Klipsch ProMedia 2.1 120W 2.1ch Speakers -
External Storage Seagate Backup Plus 4TB External Hard Drive $119.99 @ B&H
External Storage Seagate Backup Plus 4TB External Hard Drive $119.99 @ B&H
Other Xbox One S controller $49.00
Other Xbox 360 controller wired $26.99
Prices include shipping, taxes, rebates, and discounts
Total (before mail-in rebates) $4093.08
Mail-in rebates -$20.00
Total $4073.08
Generated by PCPartPicker 2016-08-11 05:41 EDT-0400

What I have wishlisted/Plan on getting: http://www.newegg.com/Product/Product.aspx?Item=N82E16817139082

Also, if there are newer models out or going to come out in 1-3 months I'd like to know. I'm wanting to get one with a 10 year warranty, no less than 5 years.

/r/buildapc Thread