Radiator Mounting for Fractal Define Nano S

[gding2000]

Is it possible to mount two 120mm radiators (CPU and GPU cooling) on the front of the Fractal Define Nano S with push-pull configuration?

 

[n0ns3ns3]

depends on exact radiator size.
some of them will fit. the push/pull is very questionable as it depends on GPU length. with ~300mm GPU length you have space only about 65mm for rad and fan. but you can remove the dust filter and mount the second fan on the "outside" behind front cover instead of dust filter.
it is also possible to mount the 120 rad on the rear (in window model, the rad should be up to 125mm wide).
IMHO, you'd be much better with 240 rad for CPU and 120 for GPU (GPU only) or 240mm for full cover GPU block. 360-480 total radiator surface for custom loop. though 240 rad can keep overclocked i7 + GTX 1070 both cool and quite under gaming load.

 

[13thmonkey]

curious as to why 240 for cpu and 120 for GPU, when the tdp of a decent gpu is around twice that of most high end CPUs? Literally just curious.

 

[n0ns3ns3]

^ OP most probably intends to use AiO for CPU and probably some kind of hybrid GPU. the AiO for CPUs are available at 120-360 sizes. But i have not seen a GPU with hybrid cooling with radiator larger than 120mm. in most cases only GPU is cooled by liquid. (VRM dumps quite a lot of heat to the loop). That's why I mentioned GPU only and full cover blocks with different radiator size
General rule is 120 rad per CPU/GPU component.
So total 240 would be enough but a bit noisy - still quite, but audible using NF-P12@1300RMP on load. 360-480 would be both cooler and much quieter.
I have experimented with the Define Nano S and was able to put 600 of total rad surface (240 XFlow front, 240 top, 120 XFlow rear) inside it, but only 5 fans since front section of top rad is blcoked by pump/res combo.
it's a bit ugly so the rear was removed. since my ram has "tall" heatsinks, right now it runs on single 240 front rad until lower profile ram heatsinks will be delivered.

 

[MaxxBot]

curious as to why 240 for cpu and 120 for GPU, when the tdp of a decent gpu is around twice that of most high end CPUs? Literally just curious.

The heat density of the CPU is much higher because the CPU die is typically much smaller than the GPU die, making the CPU more difficult to cool.

 

[n0ns3ns3]

curious as to why 240 for cpu and 120 for GPU, when the tdp of a decent gpu is around twice that of most high end CPUs? Literally just curious.

The heat density of the CPU is much higher because the CPU die is typically much smaller than the GPU die, making the CPU more difficult to cool.

this statement is completely irrelevant to the radiator size.
TDP of the component is the only important thing since radiator only dissipates heat absorbed by the coolant.
GPUs that are worth liquid cooling, usually have TDP of 170-270 watt.
CPUs that are worth liquid cooling are not getting into this territory. not above 200 watt on X99 after overclock.

 

[13thmonkey]

curious as to why 240 for cpu and 120 for GPU, when the tdp of a decent gpu is around twice that of most high end CPUs? Literally just curious.

The heat density of the CPU is much higher because the CPU die is typically much smaller than the GPU die, making the CPU more difficult to cool.

That is irrelevant, it's watts, and not watts/cm^2, a 200W GPU pushes out three times the heat of a 65W CPU, so should require three times the cooling capacity. Yes the VRM's are responsible for some of that, but that should be just 'losses' so maybe 10% of total TDP.