CPUs

AMD EPYC 3255 vs AMD EPYC 3451 Full Specs

8 Cores
16 Threads
2.5GHz
16 Cores
32 Threads
2.15GHz
TDP
55W
TDP
100W
Bandwidth
85.3GB/s
DDR4
Bandwidth
85.3GB/s
DDR4
iGPU
0
iGPU
0
Socket
Socket

EPYC 3255EPYC 3255760
x1.02
EPYC 3451EPYC 3451745
x1

8 Cores
16 Cores
16 Threads
32 Threads

Base Clock
2.5GHz
Base Clock
2.15GHz
Boost Clock
3.1GHz
Boost Clock
3GHz
Overclocking
Locked
Overclocking
Locked

L1i
64KB
L1i
64KB
L1d
32KB
L1d
32KB
L2
512KB
L2
512KB
L3
16MB
L3
32MB

Type
DDR4
Type
DDR4
Max Memory
64GB
Max Memory
64GB
ECC
Yes
ECC
Yes
Channels
4
Channels
4
Bus Width
256-bit
Bus Width
256-bit
Speed
2666MT/s
Speed
2666MT/s
Bandwidth
85.3GB/s
Bandwidth
85.3GB/s
Bandwidth Calculator
Channels
Transfer Rate
Calculated Bandwidth
85.3GB/s
Bandwidth Calculator
Channels
Transfer Rate
Calculated Bandwidth
85.3GB/s

TDP
55W
TDP
100W
cTDP-down
25W
cTDP-down
80W
Max Operating Temp
105°C Max
Max Operating Temp
105°C Max

Bus Type
PCIe
Bus Type
PCIe
Bus Config
4 lanes
Bus Config
4 lanes
Bus Speed
8GT/s
Bus Speed
8GT/s
Bus Bandwidth
4GB/s
Bus Bandwidth
4GB/s

PCIe
PCIe 3.0 x32
31.5GB/sBandwidth
PCIe
PCIe 3.0 x64
63GB/sBandwidth

Manufacturer
Manufacturer
ISA
x86-64
ISA
x86-64
Architecture
Architecture
Family
Family
Branding
EPYC 2017 branding
Branding
EPYC 2017 branding
Codename
Snowy Owl
ZeppelinDie
-
Codename
Snowy Owl
ZeppelinDie
Snowy Owl 16CVariant
Market Segment
Embedded
Market Segment
Embedded
Release Date
Feb 21, 2018
Release Date
Feb 1, 2018

Foundry
GlobalFoundries
Foundry
GlobalFoundries
Fabrication Node
14LP
Fabrication Node
14LP
Die Size
213mm²
Die Size
426mm²
Transistor Count
4.8 Billion
Transistor Count
9.6 Billion
Transistor Density
23 MTr/mm²
Transistor Density
23 MTr/mm²

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