Swiftech H220: Adding to the Loop

H220 + GTX580 EK FULL COVER BLOCK
After seeing what the H220 could do with a little assistance from another radiator, I really wanted to see if we could get away with just adding a full cover GPU block to the H220 loop.  This seems like the next likely upgrade for most people after changing out tubing.

Swiftech H220: Adding to the Loop Swiftech H220: Adding to the Loop

What I found:

Ambient temps: 22.78C/73F
Max overclock: 4.8 ghz/1.472V vCore
IBT temps: 79.25C core average

Swiftech H220: Adding to the Loop

What happened, is exactly what I expected.  There simply is not enough radiator surface area from the single slim 240mm radiator to handle the heat in the loop.  It was so hot under IBT load the system froze and crashed.  I was forced to lower the overclock and voltage to 4.8 ghz at 1.472V.  Even with these much lower settings it was still quite hot.
Next I ran Uningine Valley again to see what would happen to the GPU:

Ambient temps: 22.78C/73F
Max overclock: 4.8 ghz/1.472V vCore
Uningine Valley CPU temps: 66C core average
Uningine Valley GPU temps: 54C

Swiftech H220: Adding to the Loop

As you can see our benchmark temperature results were about 10 degrees C hotter than when we had the RX 240 in the loop.  Not very awesome results, but not very surprising either considering the low surface area of the radiator.