CPU + GeForce GTX 1080 cooling performance

Core i7 4790K and GeForce GTX 1080 (FE) performance 

So we have added the GeForce GTX 1080 to our liquid cooling loop, what happens if we use both the CPU anf GPu e.g. when we are gaming? Quick stress tests show that the 1080 really digs the cool temperature as it remains at a very steady clock frequency - it remains hovering rock steady at the ~1900 MHz marker (without throttling). For this test we are doing things a little differently, where we used wPrime for the sole CPU stress test, for both CPU and GPU we feel it is better to mimic an intense gaming session. We use a custom 3DMark FireStrike (Performance mode) and select and specifically loop the "combined" testing mode. This mode will put good stress on the processor, and maximize stress on the graphics card. We then leave it simmer for 15 minutes to half an hour in total. You can click on the images to load up a full screen version.

Above, CPU @ default / GeForce GTX 1080 GPU @ default:

• CPU load temp is 64 Degrees C (max)
• GPU load temp is 53 Degrees C (max)

CPU @ 4600 MHz - 1.30V voltage / GeForce GTX 1080 GPU @ default:

• CPU load temp is 75 Degrees C (max)
• GPU load temp is 53 Degrees C (max)

Let's up the ante a notch more - CPU @ 4600 MHz - 1.35V voltage / GeForce GTX 1080  @ 2050 MHz Boost / Volt +100% / Power limiter maxed out.

• CPU load temp is 80 Degrees C (max)
• GPU load temp is 56 Degrees C (max)

I have yet to find a Core i7 4790K that actually needs 1.35 Volts, but the A240G runs it albeit temps are getting too dangerous. The GTX 1080 then, we overclocked it to 2025~2050 MHz (Boost). The card has added voltage and a higher power limiter allowance to go higher. Charted up, temps with using both the CPU and GPU look like this: