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Latest revision Your text
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|manufacturer=GlobalFoundries
 
|manufacturer=GlobalFoundries
 
|model number=3251
 
|model number=3251
|part number=PE3251BGR88AF
 
 
|market=Server
 
|market=Server
 
|market 2=Embedded
 
|market 2=Embedded
 
|first announced=February 21, 2018
 
|first announced=February 21, 2018
 
|first launched=February 21, 2018
 
|first launched=February 21, 2018
|last order=2028
 
|release price=$315
 
 
|family=EPYC Embedded
 
|family=EPYC Embedded
 
|series=3000
 
|series=3000
|locked=Yes
 
 
|frequency=2,500 MHz
 
|frequency=2,500 MHz
 
|turbo frequency1=3,100 MHz
 
|turbo frequency1=3,100 MHz
|turbo frequency8=3,100 MHz
 
 
|clock multiplier=25
 
|clock multiplier=25
 
|isa=x86-64
 
|isa=x86-64
Line 24: Line 19:
 
|microarch=Zen
 
|microarch=Zen
 
|core name=Snowy Owl
 
|core name=Snowy Owl
|core family=23
 
|core model=1
 
|core stepping=B2
 
|cpuid=0x00800F12
 
 
|process=14 nm
 
|process=14 nm
 
|transistors=4,800,000,000
 
|transistors=4,800,000,000
Line 37: Line 28:
 
|max cpus=1
 
|max cpus=1
 
|max memory=512 GiB
 
|max memory=512 GiB
|tdp=55 W
+
|tdp=50 W
 
|tjunc min=0 °C
 
|tjunc min=0 °C
 
|tjunc max=105 °C
 
|tjunc max=105 °C
|package name 1=amd,sp4r2
+
|package module 1={{packages/amd/package sp4r2}}
 
}}
 
}}
'''EPYC Embedded 3251''' is a {{arch|64}} [[octa-core]] [[x86]] embedded microprocessor introduced by [[AMD]] in early [[2018]] for dense servers and edge devices. This processor has CPU cores based on the {{amd|Zen|Zen microarchitecture|l=arch}} and is fabricated on a [[GlobalFoundries]] [[14 nm#GlobalFoundries|14 nm]] process. It operates at 2.5 GHz with a {{abbr|TDP}} of 55 W and a {{amd|precision boost|turbo frequency}} of up to 3.1 GHz. The 3251 supports up to 512 GiB of dual-channel DDR4-2666 memory.
+
'''EPYC Embedded 3251''' is a {{arch|64}} [[octa-core]] [[x86]] embedded microprocessor introduced by [[AMD]] in early [[2018]] for dense servers and edge devices. Fabricated on a [[14 nm process]] based on the {{amd|Zen|Zen microarchitecture|l=arch}}, this chip operates at 2.5 GHz with a TDP of 50 W and a {{amd|precision boost|turbo frequency}} of 3.1 GHz. The 3251 supports up to 512 GiB of dual-channel DDR4-2666 ECC memory.
 +
 
 +
 
 +
{{unknown features}}
 +
 
  
 
== Cache ==
 
== Cache ==
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|l1 cache=768 KiB
 
|l1 cache=768 KiB
 
|l1i cache=512 KiB
 
|l1i cache=512 KiB
|l1i break=8 × 64 KiB
+
|l1i break=8x64 KiB
 
|l1i desc=4-way set associative
 
|l1i desc=4-way set associative
 
|l1d cache=256 KiB
 
|l1d cache=256 KiB
|l1d break=8 × 32 KiB
+
|l1d break=8x32 KiB
 
|l1d desc=8-way set associative
 
|l1d desc=8-way set associative
 
|l1d policy=write-back
 
|l1d policy=write-back
 
|l2 cache=4 MiB
 
|l2 cache=4 MiB
|l2 break=8 × 512 KiB
+
|l2 break=8x512 KiB
 
|l2 desc=8-way set associative
 
|l2 desc=8-way set associative
 
|l2 policy=write-back
 
|l2 policy=write-back
 
|l3 cache=16 MiB
 
|l3 cache=16 MiB
|l3 break=2 × 8 MiB
+
|l3 break=2x8 MiB
 
|l3 desc=16-way set associative
 
|l3 desc=16-way set associative
 
|l3 policy=write-back
 
|l3 policy=write-back
 
}}
 
}}
 
== Memory controller ==
 
{{memory controller
 
|type=DDR4-2666
 
|ecc=Yes
 
|max mem=512 GiB
 
|controllers=2
 
|channels=2
 
|max bandwidth=42.67 GB/s
 
|bandwidth schan=21.33 GB/s
 
|bandwidth dchan=42.67 GB/s
 
}}
 
 
== Expansions ==
 
The EPYC Embedded 3251 integrates two 8-port, 16-lane PCIe Gen 1/2/3 (8 GT/s) controllers. All lanes are configurable as x16/x8/x4/x2/x1 wide (e.g. 1x4 + 4x1 + 1x8) PCIe links, some lanes alternatively as SATA Gen 1/2/3 (6 Gb/s) or 10 Gbit/s Ethernet ports. Up to eight SATA ports and four GbE ports are available on this model, as well as four USB 3.1 Gen 1 (5 Gb/s) ports, and the following low speed interfaces: {{abbr|eMMC}}, {{abbr|UART}}, {{abbr|LPC}}, {{abbr|SPI/eSPI}}, {{abbr|I<sup>2</sup>C}}, {{abbr|SMBus}}, {{abbr|GPIO}}.
 
 
{{expansions main
 
|
 
{{expansions entry
 
|type=PCIe
 
|pcie revision=3.0
 
|pcie lanes=32
 
|pcie config=x16
 
|pcie config 2=x8
 
|pcie config 3=x4
 
|pcie config 4=x2
 
|pcie config 5=x1
 
}}
 
{{expansions entry
 
|type=USB
 
|usb revision=3.1
 
|usb ports=4
 
}}
 
{{expansions entry
 
|type=SATA
 
|sata revision=3.0
 
|sata ports=8
 
}}
 
}}
 
{{network
 
|eth opts=Yes
 
|10ge=Yes
 
|10ge ports=4
 
}}
 
 
== Features ==
 
{{x86 features
 
|real=Yes
 
|protected=Yes
 
|smm=Yes
 
|fpu=Yes
 
|x8616=Yes
 
|x8632=Yes
 
|x8664=Yes
 
|nx=Yes
 
|mmx=Yes
 
|emmx=Yes
 
|sse=Yes
 
|sse2=Yes
 
|sse3=Yes
 
|ssse3=Yes
 
|sse41=Yes
 
|sse42=Yes
 
|sse4a=Yes
 
|sse_gfni=No
 
|avx=Yes
 
|avx_gfni=No
 
|avx2=Yes
 
|avx512f=No
 
|avx512cd=No
 
|avx512er=No
 
|avx512pf=No
 
|avx512bw=No
 
|avx512dq=No
 
|avx512vl=No
 
|avx512ifma=No
 
|avx512vbmi=No
 
|avx5124fmaps=No
 
|avx512vnni=No
 
|avx5124vnniw=No
 
|avx512vpopcntdq=No
 
|avx512gfni=No
 
|avx512vaes=No
 
|avx512vbmi2=No
 
|avx512bitalg=No
 
|avx512vpclmulqdq=No
 
|abm=Yes
 
|tbm=No
 
|bmi1=Yes
 
|bmi2=Yes
 
|fma3=Yes
 
|fma4=No
 
|aes=Yes
 
|rdrand=Yes
 
|sha=Yes
 
|xop=No
 
|adx=Yes
 
|clmul=Yes
 
|f16c=Yes
 
|bfloat16=No
 
|tbt1=No
 
|tbt2=No
 
|tbmt3=No
 
|tvb=No
 
|bpt=No
 
|eist=No
 
|sst=No
 
|flex=No
 
|fastmem=No
 
|ivmd=No
 
|intelnodecontroller=No
 
|intelnode=No
 
|kpt=No
 
|ptt=No
 
|intelrunsure=No
 
|mbe=No
 
|isrt=No
 
|sba=No
 
|mwt=No
 
|sipp=No
 
|att=No
 
|ipt=No
 
|tsx=No
 
|txt=No
 
|ht=No
 
|vpro=No
 
|vtx=No
 
|vtd=No
 
|ept=No
 
|mpx=No
 
|sgx=No
 
|securekey=No
 
|osguard=No
 
|intqat=No
 
|dlboost=No
 
|3dnow=No
 
|e3dnow=No
 
|smartmp=No
 
|powernow=No
 
|amdvi=Yes
 
|amdv=Yes
 
|amdsme=Yes
 
|amdtsme=Yes
 
|amdsev=Yes
 
|rvi=No
 
|smt=Yes
 
|sensemi=Yes
 
|xfr=No
 
|xfr2=No
 
|mxfr=No
 
|amdpb=No
 
|amdpb2=No
 
|amdpbod=No
 
}}
 
 
== Bibliography ==
 
* [https://ir.amd.com/news-events/press-releases/detail/816/amd-launches-epyc-embedded-and-ryzen-embedded "AMD Launches EPYC™ Embedded and Ryzen™ Embedded Processors for End-to-End “Zen” Experiences from the Core to the Edge"] (Press release). AMD.com. February 21, 2018.
 
* {{cite techdoc|title=Product Brief: AMD EPYC™ Embedded 3000 Family|file=3000-Family-Product-Brief.pdf|publ=AMD|pid=1887102|date=2018}}
 
* {{cite techdoc|title=Product Brief: AMD EPYC™ Embedded 3000 Family|url=https://www.amd.com/system/files/documents/updated-3000-family-product-brief.pdf|publ=AMD|pid=1887102|rev=E|date=2019}}
 
* [https://www.amd.com/en/products/specifications/embedded "Embedded Processor Specifications"]. AMD.com. Retrieved October 2020.
 

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Has subobject
"Has subobject" is a predefined property representing a container construct and is provided by Semantic MediaWiki.
EPYC Embedded 3251 - AMD#pcie +
base frequency2,500 MHz (2.5 GHz, 2,500,000 kHz) +
clock multiplier25 +
core count8 +
core family23 +
core model1 +
core nameSnowy Owl +
core steppingB2 +
cpuid0x00800F12 +
designerAMD +
die area213 mm² (0.33 in², 2.13 cm², 213,000,000 µm²) +
familyEPYC Embedded +
first announcedFebruary 21, 2018 +
first launchedFebruary 21, 2018 +
full page nameamd/epyc embedded/3251 +
has advanced vector extensionstrue +
has advanced vector extensions 2true +
has amd amd-v technologytrue +
has amd amd-vi technologytrue +
has amd secure encrypted virtualization technologytrue +
has amd secure memory encryption technologytrue +
has amd sensemi technologytrue +
has amd transparent secure memory encryption technologytrue +
has ecc memory supporttrue +
has featureAdvanced Vector Extensions +, Advanced Vector Extensions 2 +, Advanced Encryption Standard Instruction Set Extension + and SenseMI Technology +
has locked clock multipliertrue +
has simultaneous multithreadingtrue +
has x86 advanced encryption standard instruction set extensiontrue +
instance ofmicroprocessor +
isax86-64 +
isa familyx86 +
l1$ size768 KiB (786,432 B, 0.75 MiB) +
l1d$ description8-way set associative +
l1d$ size256 KiB (262,144 B, 0.25 MiB) +
l1i$ description4-way set associative +
l1i$ size512 KiB (524,288 B, 0.5 MiB) +
l2$ description8-way set associative +
l2$ size4 MiB (4,096 KiB, 4,194,304 B, 0.00391 GiB) +
l3$ description16-way set associative +
l3$ size16 MiB (16,384 KiB, 16,777,216 B, 0.0156 GiB) +
last order2028 +
ldateFebruary 21, 2018 +
manufacturerGlobalFoundries +
market segmentServer + and Embedded +
max cpu count1 +
max junction temperature378.15 K (105 °C, 221 °F, 680.67 °R) +
max memory524,288 MiB (536,870,912 KiB, 549,755,813,888 B, 512 GiB, 0.5 TiB) +
max memory bandwidth39.74 GiB/s (40,693.283 MiB/s, 42.67 GB/s, 42,670 MB/s, 0.0388 TiB/s, 0.0427 TB/s) +
max memory channels2 +
max sata ports8 +
max usb ports4 +
microarchitectureZen +
min junction temperature273.15 K (0 °C, 32 °F, 491.67 °R) +
model number3251 +
nameEPYC Embedded 3251 +
packageSP4r2 +
part numberPE3251BGR88AF +
process14 nm (0.014 μm, 1.4e-5 mm) +
release price$ 315.00 (€ 283.50, £ 255.15, ¥ 32,548.95) +
series3000 +
smp max ways1 +
supported memory typeDDR4-2666 +
tdp55 W (55,000 mW, 0.0738 hp, 0.055 kW) +
technologyCMOS +
thread count16 +
transistor count4,800,000,000 +
turbo frequency (1 core)3,100 MHz (3.1 GHz, 3,100,000 kHz) +
turbo frequency (8 cores)3,100 MHz (3.1 GHz, 3,100,000 kHz) +
word size64 bit (8 octets, 16 nibbles) +