Now we come to the system installation. For hardware, we are using an AMD Ryzen 7 3700X* on a Gigabyte B450I AORUS WIFI with 32GB Crucial Ballistix Sport. The Ryzen is cooled by a Noctua NH-L12 S1 Ghost* and is not overclocked. A GTX 1060 6GB from Gigabyte AORUS is responsible for the image output. The power supply is handled by the fully modular Corsair SF450 Gold with an 80 Plus Gold efficiency rating.
As is to be expected for an ITX case, a certain order should be followed when installing the components. This will prevent greater frustration later on if something suddenly doesn’t fit after all. Starting with the installation of the power supply, the mainboard follows and finally the graphics card. The system looks very neat and tidy due to the power supply being sealed off in the cage and the sensibly placed cable feed-throughs. All in all, the assembly with the cabling of all components took about 60 minutes.
Due to the slightly larger volume, the Jonsbo A4 offers enough space inside. Thus, CPU coolers are allowed to be a maximum of 71 millimeters high. However, Jonsbo strongly aims at the buyer installing a 240 AiO in the lid of the A4 to be able to cool the CPU better. Sufficient space is at least available for this.
The pixel accelerator in the other chamber should not exceed a length of 325 millimeters and a height of 54 millimeters. That’s good, but 3-slot cards won’t fit in the A4 because of that.
Lastly, we come to the temperatures that were reached in the Jonsbo A4. During the stress test, Prime95 and FurMark were run for 15 minutes at a room temperature of 24°C.
Out of the box, the Jonsbo A4 comes without a fan. It should be clear to everyone that it is not a good idea to operate an ITX case completely without a fan. Nevertheless, we have tested the A4 without a fan. As expected, the results are quite sobering. On the other hand, it looks much better when you use the free fan slots and equip them with corresponding 120-millimeter fans. The temperatures can be reduced significantly. However, the use of an AiO water cooling for the CPU seems much more sensible than a pure air cooling solution in our eyes. Especially at reduced speeds, the Noctua NH-L12 S1 Ghost struggles quite a bit.