Editing loongson/godson 2/2f

{{loongson title|Godson-2F}}
{{mpu
| name                = Godson-2F
| image               = godson-2f.jpg
| image size          = 250px
| caption             = Godson-2F chip
| designer            = Loongson
| manufacturer        = STMicroelectronics
| model number        = 2F
| part number         = PLA80
| part number 1       = 
| market              = Desktop
| first announced     = July 31, 2007
| first launched      = June, 2008
| last order          = 
| last shipment       = 
| release price       = 

| family              = Godson 2
| series              = Godson 2
| locked              = 
| frequency           = 800 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             = 90 nm
| transistors         = 51,000,000
| technology          = CMOS
| die area            = 43 mm²
| die width           = 
| die length          = 
| word size           = 64 bit
| core count          = 1
| thread count        = 1
| max cpus            = 1
| max memory          = 

| electrical          = Yes
| power               = 5 W
| v core              = 1.2 V
| 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           = Yes
| package 0           = HFCBGA-452
| package 0 type      = HFCBGA
| package 0 pins      = 452
| package 0 pitch     = 
| package 0 width     = 27 mm
| package 0 length    = 27 mm
| package 0 height    = 
| socket 0            = BGA-452
| socket 0 type       = BGA
}}
'''Godson-2F''' ('''龙芯2F''') 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 mid-[[2008]], the Godson-2F operates at up to 800 MHz consuming 5 W. This chip was manufactured on [[STMicroelectronics]]' [[90 nm process]].

The Godson-2F features a faster memory controller (supporting up to DDR2-667) and integrates some of the functionality of the [[southbridge]] including a PCI-X controller and more general-purpose I/O pins.

== Cache ==
{{main|loongson/microarchitectures/GS464#Memory_Hierarchy|l1=GS464 § Cache}}
{{cache size
|l1 cache=128 KiB
|l1i cache=64 KiB
|l1i break=1x64 KiB
|l1i desc=4-way set associative
|l1d cache=64 KiB
|l1d break=1x64 KiB
|l1d desc=4-way set associative
|l1d policy=
|l2 cache=512 KiB
|l2 break=1x512 KiB
|l2 desc=4-way set associative
|l2 policy=
}}

== Memory controller ==
{{memory controller
|type=DDR2-667
|ecc=Yes
|max mem=4 GiB
|controllers=1
|channels=1
|max bandwidth=9.934 GiB/s
|bandwidth schan=9.934 GiB/s
}}

== Expansions ==
This chip has integrated [[HyperTransport]] 1.0 operating at 400 MHz.
{{expansions
|pci width  = 32 bit
|pci clock = 66 MHz
|pci revision=2.3
|pcix width = 32 bit
|pcix revision=1.0b
|pcix clock = 133 MHz
|lpc revision=1.1
}}

== Graphics ==
This chip had no [[integrated graphics processing unit]].

== Die Shot ==
* [[90 nm process]]
* 51,000,000 transistors
* 43 mm² die size
[[File:godson-2f die shot.png]]

== 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.

== Datasheet ==
* [[:File:godson 2f ds (v1.1).pdf|Godson 2F Datasheet (V1.1)]]
base frequency	800 MHz (0.8 GHz, 800,000 kHz) +
core count	1 +
core name	GS464 +
core voltage	1.2 V (12 dV, 120 cV, 1,200 mV) +
designer	Loongson +
die area	43 mm² (0.0667 in², 0.43 cm², 43,000,000 µm²) +
family	Godson 2 +
first announced	July 31, 2007 +
first launched	June 2008 +
full page name	loongson/godson 2/2f +
has ecc memory support	true +
instance of	microprocessor +
isa	MIPS64 +
isa family	MIPS +
l1$ size	128 KiB (131,072 B, 0.125 MiB) +
l1d$ description	4-way set associative +
l1d$ size	64 KiB (65,536 B, 0.0625 MiB) +
l1i$ description	4-way set associative +
l1i$ size	64 KiB (65,536 B, 0.0625 MiB) +
l2$ description	4-way set associative +
l2$ size	0.5 MiB (512 KiB, 524,288 B, 4.882812e-4 GiB) +
ldate	June 2008 +
main image	+
main image caption	Godson-2F chip +
manufacturer	STMicroelectronics +
market segment	Desktop +
max cpu count	1 +
max memory bandwidth	9.934 GiB/s (10,172.416 MiB/s, 10.667 GB/s, 10,666.551 MB/s, 0.0097 TiB/s, 0.0107 TB/s) +
max memory channels	1 +
microarchitecture	GS464 +
model number	2F +
name	Godson-2F +
part number	PLA80 +
power dissipation	5 W (5,000 mW, 0.00671 hp, 0.005 kW) +
process	90 nm (0.09 μm, 9.0e-5 mm) +
series	Godson 2 +
smp max ways	1 +
supported memory type	DDR2-667 +
technology	CMOS +
thread count	1 +
transistor count	51,000,000 +
word size	64 bit (8 octets, 16 nibbles) +