Last month, we finally got our first glimpse of the long-awaited Loongson 3A6000 processor, which was developed specifically for the Chinese PC market. The preview showed that the chip can certainly keep up with the newer desktop CPUs from Intel and AMD in terms of instructions per clock (IPC). Further tests are now available that demonstrate the capabilities of this processor even more clearly.
The Loongson 3A6000 CPU has a quad-core design with 4 cores and 8 threads operating at up to 2.5 GHz. The CPU utilizes the fourth generation Dragon architecture, which integrates LA664 cores and provides support for 128-bit vector processing extension instructions (LSX) and 256-bit extended vector processing extension instructions (LASX). SMT2 is also available.
The performance of the chip was measured in the SPEC CPU 2006 and UnixBench benchmark tests. In the single-core tests, the Loongson 3A6000 CPU showed an impressive performance increase of up to 75% compared to its predecessor, the 3A5000. The chip also almost matched the performance of the Core i3-10100, but consumed less power (42W compared to 52W). The main difference is that the Loongson 3A6000 CPU ran at a clock speed of 2.5 GHz, while the Core i3-10100 ran at 4.3 GHz. In the multi-core tests, the chip again showed an almost double increase in performance compared to its predecessor, the 3A5000, offering almost the same performance as the Core i3-10100 (4.3 GHz).
To ensure that a fair comparison is possible, the Loongson 3A6000 was compared with the Core i3-10100 and the Core i5-14600K at a clock frequency of 2.5 GHz. The 3A6000 was able to outperform the Core i3-10100 CPU by up to 40% without any problems. The chip was also faster than the Core i5-14600K in the integer tests, although it lagged slightly behind in the floating point tests.
Ultimately, the UnixBench shows that the Loongson 3A6000 CPU can be a very competitive solution in the Chinese domestic market. Although the clock frequencies could be improved in future generations, the chip only seems to be able to reach clock speeds of around 2.6 GHz at the moment. For 3 GHz, LN2 cooling is required, as demonstrated by ASUS’s Tony.
The XC-LS3A6M motherboard from ASUS was used for the overclocking demonstration. It was specially developed for the Loongson 3A6000 CPUs and offers DDR4 support as well as the 7A2000 PCH. The motherboard has a variety of I/O functions and ASUS is planning future overclocking updates.
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