Hands on: I tried the PCSpecialist Onyx Pro – read what I thought of this powerful workstation

PCSpecialist takes a unique approach in this month’s Labs by supplying its system with consumer-grade graphics. It’s also the only company to provide secondary storage along with a main drive. So this workstation has a lot in common with a high-end gaming rig; if you design games for a living, this could be exactly what you want.

The CPU is unquestionably potent. This is a 13th generation Intel Core i9-13900K with 24 cores. Eight of these are P-cores with a 3GHz base clock rising to 5.8GHz on maximum boost with Hyper-Threading, while the other 16 are E-cores that operate at 2.2GHz or boost to 4.3GHz, but without Hyper-Threading. So you still get 32 threads like the 16-core AMD CPUs, but 24 of these are full physical cores not virtual ones.

Since Intel Core i9 processors have supported DDR5 memory for a couple of generations now, PCSpecialist has opted for this RAM type, offering 5,200MHz DIMMs. But it has gone further than this – much further. This system includes an incredible 192GB, which is the maximum supported by the Asus ROG Maximus Z790 Hero motherboard. This is supplied as four 48GB modules, although this isn’t a quad-channel system. It’s safe to say that you won’t be needing to upgrade the memory on this system at any point during its useful lifetime.

Now we get to the elephant in the room: the consumer-grade graphics. This is cheaper than the professional equivalent, meaning you can get more power for your money. In fact, PCSpecialist has opted for an Asus TUF GeForce RTX 4090 OC Edition, which is the most powerful consumer GPU currently available. This provides 9,728 CUDA cores, almost as many as the Nvidia RTX A6000, but the 4090 has a newer GPU core design and runs at a much higher clock speed, so promises significantly higher raw processing power – of which more later.