Template:mpu Godson-2E (龙芯2E) is a 64-bit MIPS performance processor developed by ICT and later Loongson for desktop computers. Introduced in early 2006, the Godson-2E operates at up to 1 GHz consuming 7W. This chip was manufactured on STMicroelectronics' 90 nm process and provides roughly three times the performance of 2C.

The Godson-2E introduces a number of improvements over its predecessor, including double the clock frequency, the addition of a large L2 cache, and the integration of the northbridge on-die, supporting up to DDR-333.

Cache

Main article: GS464 § Cache

[Edit/Modify Cache Info]

Cache Organization Cache is a hardware component containing a relatively small and extremely fast memory designed to speed up the performance of a CPU by preparing ahead of time the data it needs to read from a relatively slower medium such as main memory. The organization and amount of cache can have a large impact on the performance, power consumption, die size, and consequently cost of the IC. Cache is specified by its size, number of sets, associativity, block size, sub-block size, and fetch and write-back policies. Note: All units are in kibibytes and mebibytes.

L1$ 128 KiB 131,072 B 0.125 MiB L1I$ 64 KiB 65,536 B 0.0625 MiB 1x64 KiB 4-way set associative   L1D$ 64 KiB 65,536 B 0.0625 MiB 1x64 KiB 4-way set associative   L2$ 512 KiB 0.5 MiB 524,288 B 4.882812e-4 GiB     1x512 KiB 4-way set associative

Memory controller

[Edit/Modify Memory Info]

	Integrated Memory Controller
	Max Type DDR-333 Supports ECC Yes Max Mem 2 GiB Controllers 1 Channels 1 Max Bandwidth 4.967 GiB/s 5,086.208 MiB/s 5.333 GB/s 5,333.276 MB/s 0.00485 TiB/s 0.00533 TB/s Bandwidth Single 4.967 GiB/s

Graphics

This chip had no integrated graphics processing unit.

Die Shot

• 90 nm process
• 47,000,000 transistors
• 36 mm²

References

• Hu, Wei-Wu, and Jian Wang. "Making effective decisions in computer architects’ real-world: Lessons and experiences with Godson-2 processor designs." Journal of Computer Science and Technology 23.4 (2008): 620-632.