Dear community,
I'm gonna build for the first time within the following config:
I'm gonna build for the first time within the following config:
- Case: Dan A4 (7.2L) or Louqe Ghost S1 (8.2L) or FormD T1 (9.5L)
- CPU: AMD Ryzen 5600X (65W) or 5800X (105W)
- GPU: Nvidia GeForce GTX 1070 (150W) or RTX 3070 (220W)
- I've thought the good rule of a thumb is to add ~30% on top of TDP, so I planned to go for a 350W PSU (for the light scenario) or a 450W one (for the heavy scenario). However, they say both CPU and GPU may have spikes in power consumption, where GPU's spikes will be occasional and mainly in gaming, while CPU's spikes will be mainly in video rendering and go throughout the whole process. So while they confirmed 350W PSU for the light scenario is OK, the heavy one requires a 550W or even better a 650W one - to "cover" all possible RTX 3070 spikes. Questions: which hardware (CPU or GPU) is more likely to have spikes and when? If all CPUs and GPUs have occasional spikes, why is it particularly my heavy scenario that requires more than +30% (shouldn't the same logic be applied then to the light scenario too - e.g. a 400-450W [instead of 350W] for the 250W TDP)?
- Am I right ATX specification applies to SFX form factor too? How much is the version important? I'm not talking about the ATX12VO which is as new as it is useless so far (IMO), but ATX12V v2.51 introduces an Alternative Sleep Mode (ASM), which is supposed to do something (not examined the details yet) with power management.
- What are the nice-to-have features/options of SFX PSU? Fan-less/passive mode, modular cable system, flexible cables (individually sleeved and/or insulated with soft silicon rubber) of proper length - anything else? As far as I know fan curve can't be regulated via app (and probably this is not even needed?), but possibly there's something good an an option, which you can recommend?