CPUs

AMD EPYC 3255 vs Intel Core i7-7820X Full Specs

8 Cores
16 Threads
2.5GHz
8 Cores
16 Threads
3.6GHz
TDP
55W
TDP
140W
Bandwidth
85.3GB/s
DDR4
Bandwidth
85.3GB/s
DDR4
iGPU
0
iGPU
0
Socket
Socket

EPYC 3255EPYC 3255760
x1
Core i7-7820XCore i7-7820X1,427
x1.88

8 Cores
8 Cores
16 Threads
16 Threads

Base Clock
2.5GHz
Base Clock
3.6GHz
Boost Clock
3.1GHz
Boost Clock
4.5GHz
Overclocking
Locked
Overclocking
Unlocked

L1i
64KB
L1i
32KB
L1d
32KB
L1d
32KB
L2
512KB
L2
1MB
L3
16MB
L3
11MB

Type
DDR4
Type
DDR4
Max Memory
64GB
Max Memory
128GB
ECC
Yes
ECC
No
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
140W
cTDP-down
25W
cTDP-down
-
Max Operating Temp
105°C Max
Max Operating Temp
99°C Max
Included Cooler
-
Included Cooler
0

Bus Type
PCIe
Bus Type
DMI
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 x28
27.6GB/sBandwidth

Manufacturer
Manufacturer
ISA
x86-64
ISA
x86-64
Architecture
Architecture
Family
Family
Branding
EPYC 2017 branding
Branding
Core i7 X 2016 branding
Codename
Snowy Owl
ZeppelinDie
-
Codename
Skylake-E
-
Skylake-SP-LCCVariant
Market Segment
Embedded
Market Segment
Workstation
Release Date
Feb 21, 2018
Release Date
Jun 19, 2017

Foundry
GlobalFoundries
Foundry
Intel
Fabrication Node
14LP
Fabrication Node
14nm
Die Size
213mm²
Die Size
322mm²
Transistor Count
4.8 Billion
Transistor Count
5.5 Billion
Transistor Density
23 MTr/mm²
Transistor Density
17 MTr/mm²

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