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Godson-2A - Loongson
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General Info
Model Number2A
Introduction2003 (announced)
General Specs
FamilyGodson 2
SeriesGodson 2
Frequency250 MHz
Core NameGS464
Process180 nm
Word Size64 bit
Max SMP1-Way (Uniprocessor)
Power dissipation3 W

Godson-2A (龙芯2A) is a 64-bit MIPS performance processor developed by ICT and later Loongson for desktop computers. The Godson-2A operated at up to 250 MHz consuming up to 3 W. This chip was manufactured on SMICS' 0.18 µm process.

This chip reached tapeout on July 13, 2003. This chip consequently failed validation and was scrapped. It was eventually replaced by the 2B model.


Main article: GS464 § Cache

[Edit/Modify Cache Info]

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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$64 KiB
0.0625 MiB
65,536 B
6.103516e-5 GiB
L1I$32 KiB
0.0313 MiB
32,768 B
3.051758e-5 GiB
1x32 KiB  
L1D$32 KiB
0.0313 MiB
32,768 B
3.051758e-5 GiB
1x32 KiB  
Facts about "Godson-2A - Loongson"
base frequency250 MHz (0.25 GHz, 250,000 kHz) +
core count1 +
core nameGS464 +
designerLoongson +
familyGodson 2 +
first announced2003 +
full page nameloongson/godson 2/2a +
instance ofmicroprocessor +
isaMIPS64 +
isa familyMIPS +
l1$ size0.0625 MiB (64 KiB, 65,536 B, 6.103516e-5 GiB) +
l1d$ size0.0313 MiB (32 KiB, 32,768 B, 3.051758e-5 GiB) +
l1i$ size0.0313 MiB (32 KiB, 32,768 B, 3.051758e-5 GiB) +
ldate2003 +
manufacturerSMICS +
market segmentDesktop +
max cpu count1 +
microarchitectureGS464 +
model number2A +
nameGodson-2A +
power dissipation3 W (3,000 mW, 0.00402 hp, 0.003 kW) +
process180 nm (0.18 μm, 1.8e-4 mm) +
seriesGodson 2 +
smp max ways1 +
technologyCMOS +
thread count1 +
word size64 bit (8 octets, 16 nibbles) +