I only used it for a few minutes and tested some 1440p youtube videos on it because I don't want to use it with my current build, but I didn't notice any bleeding. Then again I wasn't really looking for it either.
No lightbleeding issues so it seems! I love this thing. I wish I could build my new setup now but I'm still waiting on a couple parts
Build complete! Took ~7 hours to build including a break for dinner. Very happy with everything so far. The build: PCPartPicker part list / Price breakdown by merchant CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor ($179.99 @ Micro Center) Motherboard: Asus MAXIMUS VII HERO ATX LGA1150 Motherboard ($209.95 @ SuperBiiz) Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1866 Memory ($79.98 @ OutletPC) Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1866 Memory ($79.98 @ OutletPC) Storage: Samsung 850 Pro Series 256GB 2.5" Solid State Drive ($169.98 @ OutletPC) Storage: Samsung 840 EVO 500GB 2.5" Solid State Drive ($218.98 @ OutletPC) Video Card: EVGA GeForce GTX 980 4GB Superclocked ACX 2.0 Video Card (2-Way SLI) ($549.99 @ Newegg) Video Card: EVGA GeForce GTX 980 4GB Superclocked ACX 2.0 Video Card (2-Way SLI) ($549.99 @ Newegg) Case: Fractal Design Define R5 ATX Mid Tower Case ($99.99 @ NCIX US) Power Supply: Antec High Current Pro Platinum 1000W 80+ Platinum Certified Fully-Modular ATX Power Supply ($204.99 @ Amazon) Monitor: Asus ROG SWIFT PG278Q 144Hz 27.0" Monitor ($765.99 @ SuperBiiz) Case Fan: Fractal Design FD-FAN-SSR2-140 66.0 CFM 140mm Fan ($13.98 @ OutletPC) Case Fan: Fractal Design FD-FAN-SSR2-140 66.0 CFM 140mm Fan ($13.98 @ OutletPC) Case Fan: Fractal Design FD-FAN-SSR2-140 66.0 CFM 140mm Fan ($13.98 @ OutletPC) Keyboard: Corsair K70 Wired Gaming Keyboard ($119.99 @ Newegg) Mouse: Corsair Sabre Wired Laser Mouse ($69.99 @ Amazon) Total: $3341.73 Prices include shipping, taxes, and discounts when available Generated by PCPartPicker 2014-12-28 21:20 EST-0500 Cable management probably could be better. But it's still miles ahead of my last build!
This was my first venture into water cooling. I wanted to make it easy Next time though I want to build a full loop including any GPUs I have at the time.