Originally Posted by Faded
do you guys think it matters if i have the 200mm rad, after the gpu block?
it seems like the water coming straight from the CPU to GPU would already be warmer and therefore not draw out as much heat? It makes sense to me, to have rad-cpu-rad-gpu-res as the best order, but i am not sure....
At 1gpm, it takes ~260w of heat to raise water by 1C. Your CPU, even highly overclocked, isn't going to be putting out that much, so if you go straight from CPU to GPU the water will be less than 1C hotter than if you had a rad between them. I'd go straight from CPU to GPU for cleaner tubing, the 1C isn't worth worrying about. The only time you need to start considering order for performance reasons is if you have a fairly extreme setup, like a dual CPU and quad GPU setup, where you're putting more than 1000w of heat into your loop. At that point, if there's no rad between any of the blocks, the last thing in series is going to see 3-4C hotter temps, but even that isn't enough to be a dealbreaker.