The RX 6400 has been one of the most interesting entry-level GPUs of the last year. The sales we’ve seen week over week have lived up to AMD’s expectations, and even today it continues to sell at a good pace. But some users were not satisfied with the dissipation system and therefore set to work to implement something passive, without noise. That’s where the former comes from. passive RX 6400 with a gigantic heat sink not suitable for any mid-range or low-end chassis, but it is stunning.
The mod has more work than it seems, because although the well-known heat sink was used Arctic Accelero S1 was not compatible with the board, plus a key component was required for its anchoring and dissipation, which, can never be disassembled.
Passive AMD RX 6400, a monster that almost no chassis supports
It is not functional as such, and less so for a compact team. Few boxes on the market will be able to support such a cooler, as it protrudes very wide, but that wasn’t the goal either. What was sought was to present a mod that would allow the passive cooling of an RX 6400 after previously achieving it with a GTX 1650.
The AMD option was the next step and it took a milling machine and some ingenuity to do it. Whereas the RX 6400 dissipates 54 wattsIt’s not that it’s a problem to refrigerate it passively, but it requires ingenuity to make it, as its size makes everything very complicated.
And they do it because we talk about low profile version, not the normal one, which poses an even greater challenge due to the arrangement of the VRAMs, which are located on both sides of the chip, meaning that one of them comes out of the perpendicular of the screws. How are you going to cool something like this with an Accelero S1?
Well, things get complicated. you have to create a cold plate that dissipates the VRAM and dodges critical components. For this, the modder has manufactured said cold plate with 3mm thick, which also has anchors to set, and here comes the second problem.
If you use wall plugs to fix the cold plate, how do you fix the heatsink if it doesn’t have screws? Well, you just have to do this using a heat sealing compound, in this case, to secure the heat sink, and the cold plate was used Solder paste at 138ºCwhich allows for good dissipation.
It’s not perfect, it’s not the one that transmits heat the best, but it’s very effective. Thanks to her and the mod, the GPU managed to stay inside full at 54 ºC with the Hot Spot at 60 ºC, making this RX 6400 the largest passive GPU ever created. Unfortunately, the Accelero S1 is no longer produced and the cooler manufacturers are not betting on its launch on the market 0dB models fad that has passed since GPUs barely make any noise and their fans stop idling.
In any case, this passive RX 6400 mod joins others we’ve seen such as the A380 with the same heatsink, or that of the GTX 1650an interesting realization for those who love zero noise.