This video compared three domestic CPU in desktop user experience, Loongson 3A5000HV, Zhaoxin KX-U6890A, Phytium D2000 against the reference CPU Intel i5-6500. All PC are installed with the same Unity OS and applications, have the same 16 GB RAM, and controlled by a keyboard and mouse in unison. The result is the 4 core Loongson came close with the 4 core Intel CPU, and it consistently beat the Zhaoxin and Phytium despite both are 8 core CPU. Note that Intel is 3.2 - 3.6 GHz compared to 2.5 GHz of Loongxin, so its performance will be 30% better if it take the same time to execute an instruction.

But the problem is majority of the government sales are given to the later two. Zhaoxin in particular often came out with false advertisement that it beat Loongxin in performace. Because the Zhaoxin and Phytium can't compete they pressed for the policy that 8 core CPU should be the standard requirement for government acquisition and investment.

Zhaoxin is based on old IP from VIA, Their selling point originally is it's x86 compatible CPU, ie. it's able to run Windows natively. But since the implementation of domestic hardware and software policy, domestic PC are not supposed to run Windows, so this outright negate their selling point. In terms of design capability, I doubt their designer are able to boost performance by designing CPU with modern architecture, as they often rely on newer fab process to boost their CPU performance. It's obvious this route can be denied by the US in the foreseeable future, banning 14 nm and below process to them. Their x86 IP is also questionable since Intel can also deny them the license to x86 ISA. In fact, VIA didn't obtain an Intel license since they won their case based on reverse engineering, so I doubt Zhaoxin actually has a license to Intel x86 ISA.

Phytium OTOH, is slightly better than Zhaoxin, because they've bought the full armv8 license from ARM, But since their is based on ARM, ARM can and has already deny them the license from armv9 architecture onwards. That means the armv8 IP they bought is in a deadend. Recently ARM has also changed its business model, no longer going to license to semiconductor companies, instead only license to device maker. This is an anti-competitive practice, so it's a very deadend.

Only Loongson has the experence of moving from MIPS architecture, which they bought the full license, to their own LoongArch ISA. They're totally indigenuos and have the best experience in designing CPU, optimizing from the CPU down to OS and applications.

Loongson LS3A5000HV - 4 core @ 2.5 GHz, LoongArch architecture.

Zhaoxin KX-U6890A - 8 core @ 2.7 GHz, x86 based architecture.

Phytium D2000 - 8 core @ 2.3 GHz, ARM based architecture.