DeepCool initiated its cooperation with Seasonic with the PQ-M series. The Seasonic Focus Plus Gold, or GX, platform is used. While quite good, it does not meet requirements everywhere, including for Alternative Sleep Mode support and transient response, with the latter being of immense importance. Moreover, as with the Seasonic TX-700, there is a notable voltage drop at +12 V during one of the turn-on transient response tests I conduct, more specifically the PSU Off To Full +12 V test, where a full load is applied the moment the PSU is turned on. The voltage drop at +12 V can lead to compatibility problems with mainboards. Seasonic should closely examine this problem to address it as soon as possible.

Despite the problems I found, the DeepCool PQ1000M is a decent addition for this category. However, the Corsair RM1000x costs less while offering higher performance since it uses a modern CWT platform that outperforms the old Seasonic Focus design. Given the upcoming ATX specification and Gen 5 PCIe, most manufacturers will have to update their platforms and designs, so we might see something new from Seasonic, which probably means right now is not the best time to purchase a PSU since it might not be compatible with the upcoming GPU generation. Some newer platforms can easily be upgraded to fully support the new GPUs, while older platforms would require a complete redesign. It is not only a matter of switching the PCIe cables for newer 12+4 pin ones since other hardware-level changes allowing the PSUs to deliver much higher peak loads without shutting down are needed.