Editing loongson/godson 2/2b1

{{loongson title|Godson-2B1}}
{{mpu
| name                = Godson-2B1
| image               = 
| image size          = 
| no image            = Yes
| caption             = 
| designer            = Loongson
| manufacturer        = SMICS
| model number        = 2B1
| part number         = 
| part number 1       = 
| market              = Desktop
| first announced     = 2004
| first launched      = March, 2004
| last order          = 
| last shipment       = 
| release price       = 

| family              = Godson 2
| series              = Godson 2
| locked              = 
| frequency           = 400 MHz
| frequency 2         = 
| frequency N         = 
| bus type            = <!-- (Property::bus type) -->
| bus speed           = <!-- (Property::bus speed) -->
| bus rate            = <!-- (Property::bus rate) -->
| bus links           = <!-- ?x bus rate -->
| clock multiplier    =

| isa family          = MIPS
| isa                 = MIPS64
| microarch           = GS464
| platform            = 
| chipset             = 
| core name           = GS464
| core family         = 
| core model          = 
| core stepping       = 
| process             = 180 nm
| transistors         = 
| technology          = CMOS
| die area            = 
| die width           = 
| die length          = 
| word size           = 64 bit
| core count          = 1
| thread count        = 1
| max cpus            = 1
| max memory          = 

| electrical          = Yes
| power               = 4 W
| v core              = 
| v core tolerance    = <!-- OR ... -->
| v core min          = 
| v core max          = 
| v io                = 
| v io tolerance      = 
| v io 2              = <!-- OR ... -->
| v io 3              = 
| sdp                 = 
| tdp                 = 
| tdp typical         = 
| ctdp down           = 
| ctdp down frequency = 
| ctdp up             = 
| ctdp up frequency   = 
| temp min            = 
| temp max            = 
| tjunc min           = <!-- .. °C -->
| tjunc max           = 
| tcase min           = 
| tcase max           = 
| tstorage min        = 
| tstorage max        = 
| tambient min        = 
| tambient max        = 

| packaging           = <!-- put Yes if packaging info is added -->
| package 0           = 
| package 0 type      = 
| package 0 pins      = 
| package 0 pitch     = 
| package 0 width     = 
| package 0 length    = 
| package 0 height    = 
| socket 0            = 
| socket 0 type       = 
}}
'''Godson-2B1''' ('''龙芯2B1''') is a {{arch|64}} [[MIPS]] performance processor developed by [[Institute of Computing Technology of the Chinese Academy of Sciences|ICT]] and later [[Loongson]] for desktop computers. Introduced in early [[2004]], the Godson-2B1 operates at up to 400 MHz consuming up to 4 W. This chip was manufactured on [[SMICS]]' [[0.18 µm process]]. This chip reached tapeout on March 7, 2004.

The Godson-2B1 is roughly twice the performance of the {{\\|2B}}.

== Cache ==
{{main|loongson/microarchitectures/GS464#Memory_Hierarchy|l1=GS464 § Cache}}
{{cache size
|l1 cache=64 KiB
|l1i cache=32 KiB
|l1i break=1x32 KiB
|l1i desc=
|l1d cache=32 KiB
|l1d break=1x32 KiB
|l1d desc=
|l1d policy=
}}
base frequency	400 MHz (0.4 GHz, 400,000 kHz) +
core count	1 +
core name	GS464 +
designer	Loongson +
family	Godson 2 +
first announced	2004 +
first launched	March 2004 +
full page name	loongson/godson 2/2b1 +
instance of	microprocessor +
isa	MIPS64 +
isa family	MIPS +
l1$ size	64 KiB (65,536 B, 0.0625 MiB) +
l1d$ size	32 KiB (32,768 B, 0.0313 MiB) +
l1i$ size	32 KiB (32,768 B, 0.0313 MiB) +
ldate	March 2004 +
manufacturer	SMICS +
market segment	Desktop +
max cpu count	1 +
microarchitecture	GS464 +
model number	2B1 +
name	Godson-2B1 +
power dissipation	4 W (4,000 mW, 0.00536 hp, 0.004 kW) +
process	180 nm (0.18 μm, 1.8e-4 mm) +
series	Godson 2 +
smp max ways	1 +
technology	CMOS +
thread count	1 +
word size	64 bit (8 octets, 16 nibbles) +