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Godson-2D1 - Loongson
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General Info
Model Number2D1
IntroductionJanuary 2006 (announced)
2006 (launched)
General Specs
FamilyGodson 2
SeriesGodson 2
Frequency800 MHz
Core NameGS464
Process130 nm
Word Size64 bit
Max CPUs1 (Uniprocessor)
Power dissipation6 W

Godson-2D1 (龙芯2D1) is a 64-bit MIPS performance processor developed by ICT and later Loongson for desktop computers.The Godson-2D1 operates at up to 800 MHz consuming up to 6 W. This chip was manufactured on STMicroelectronics' 0.13 µm process. This chip reached tapeout on January 6, 2005.

Loongson has claimed the Godson-2D has reached the performance level of 1.5 GHz PIV based on their SPECint2000 scores.


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$128 KiB
0.125 MiB
131,072 B
1.220703e-4 GiB
L1I$64 KiB
0.0625 MiB
65,536 B
6.103516e-5 GiB
1x64 KiB4-way set associative 
L1D$64 KiB
0.0625 MiB
65,536 B
6.103516e-5 GiB
1x64 KiB4-way set associative 
Facts about "Godson-2D1 - Loongson"
base frequency800 MHz (0.8 GHz, 800,000 kHz) +
core count1 +
core nameGS464 +
designerLoongson +
familyGodson 2 +
first announcedJanuary 2006 +
first launched2006 +
full page nameloongson/godson 2/2d1 +
instance ofmicroprocessor +
isaMIPS64 +
isa familyMIPS +
l1$ size0.125 MiB (128 KiB, 131,072 B, 1.220703e-4 GiB) +
l1d$ description4-way set associative +
l1d$ size0.0625 MiB (64 KiB, 65,536 B, 6.103516e-5 GiB) +
l1i$ description4-way set associative +
l1i$ size0.0625 MiB (64 KiB, 65,536 B, 6.103516e-5 GiB) +
ldate2006 +
manufacturerSTMicroelectronics +
market segmentDesktop +
max cpu count1 +
microarchitectureGS464 +
model number2D1 +
nameGodson-2D1 +
power dissipation6 W (6,000 mW, 0.00805 hp, 0.006 kW) +
process130 nm (0.13 μm, 1.3e-4 mm) +
seriesGodson 2 +
technologyCMOS +
thread count1 +
word size64 bit (8 octets, 16 nibbles) +