AMD EPYC 7251 vs Intel Core i7-7800X

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CPU comparison with benchmarks

-VS-

CPU lineage

AMD EPYC 7251 or AMD EPYC 7251 – which processor offers superior performance? In this comparison, we examine disparities and assess which of these two CPUs outperforms the other. We delve into technical specifications and benchmark outcomes.
The AMD EPYC 7251 features 8 processor cores and has the capability to manage 16 threads concurrently.
It was released in Q3/2017 and belongs to the 1 generation of the AMD EPYC series.
To use the AMD EPYC 7251, you'll need a motherboard with a SP3 socket.
The Intel Core i7-7800X features 6 processor cores and has the capability to manage 12 threads concurrently.
It was released in Q2/2017 and belongs to the 7 generation of the Intel Core i7 series.
To use the Intel Core i7-7800X, you'll need a motherboard with a LGA 2066 socket.
Desktop / Server Segment Desktop / Server
AMD EPYC 7251 Name Intel Core i7-7800X
AMD EPYC Family Intel Core i7
1 Generation 7
AMD EPYC 7001 Group Intel Core i 7000X
 
 

CPU Cores and Base Frequency

The AMD EPYC 7251 has 8 CPU cores and can calculate 16 threads in parallel.
The clock frequency of the AMD EPYC 7251 is 2.1 GHz
and turbo frequency for one core is 2.9 GHz.
The number of CPU cores greatly affects the speed of the processor and is an important performance indicator.
The Intel Core i7-7800X has 6 CPU cores and can calculate 12 threads in parallel.
The clock frequency of the Intel Core i7-7800X is 3.5 GHz
and turbo frequency for one core is 4.2 GHz.
2.9 GHz Turbo Frequency (1 core) 4.2 GHz
No Overclocking Yes
normal Core architecture normal
2.1 GHz Frequency 3.5 GHz
16 Threads 12
2.9 GHz Turbo Frequency (all cores) 3.9 GHz
Yes Hyperthreading Yes
8 CPU Cores 6
8x Cores 6x
 
 

Internal Graphics

The AMD EPYC 7251 does not have integrated graphics.
The Intel Core i7-7800X does not have integrated graphics.
-- GPU frequency --
-- Release date --
-- Direct X --
GPU name
-- Technology --
-- Max. displays --
-- Shaders --
0 bytes Max. GPU Memory 0 bytes
-- Execution units --
-- Generation --
-- GPU (Turbo) --
 
 

Artificial Intelligence and Machine Learning

-- AI specifications --
-- AI hardware --
 
 

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.
-- AVC --
-- VC-1 --
-- VP9 --
-- h265 / HEVC (10 bit) --
-- h264 --
-- VP8 --
-- h265 / HEVC (8 bit) --
-- JPEG --
-- AV1 --
 
 

Memory & PCIe

The processor supports a maximum memory capacity of 128.0 GB distributed across 4 memory channels. It offers a peak memory bandwidth of 76.8 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
8 Memory channels 4
0 bytes Max. Memory 128.0 GB
pci PCIe pci
Yes AES-NI Yes
Yes ECC No
153.6 GB/s Bandwidth 76.8 GB/s
DDR4-2666 Memory type DDR4-2400
 
 

Thermal Management

The processor has a thermal design power (TDP) of 120 W watts.
TDP indicates the cooling solution needed to effectively manage the processor's heat. It generally provides an approximate indication of the actual power consumption of the CPU itself.
The processor has a thermal design power (TDP) of 140 W watts.
-- Tjunction max --
120 W TDP (PL1 / PBP) 140 W
 
 

Technical details

The AMD EPYC 7251 is manufactured using a 14 nm process.
A smaller manufacturing process indicates a more contemporary and energy-efficient CPU.
In total, this processor boasts a generous 32.0 MB cache.
A substantial cache can significantly enhance the processor's performance, particularly in scenarios like gaming.
The Intel Core i7-7800X is manufactured using a 14 nm process.
In total, this processor boasts a generous 8.0 MB cache.
Q3/2017 Release date Q2/2017
-- Part Number --
0 bytes L2-Cache 0 bytes
AMD-V, SVM Virtualization VT-x, VT-x EPT, VT-d
SSE4a, SSE4.1, SSE4.2, FMA3, AVX2 ISA extensions SSE4.1, SSE4.2, AVX2, AVX-512
Chiplet Chip design Monolithic
Naples (Zen) Architecture Skylake X
14 nm Technology 14 nm
SP3 Socket LGA 2066
Windows 10, Linux Operating systems Windows 10, Linux
450 $ Release price 485 $
Technical data sheet Documents Technical data sheet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
32.0 MB L3-Cache 8.0 MB
 
 

Benchmarks

Geekbench 3, 64bit (Multi-Core)

Intel Core i7-7800X
6C 12T @ 3.5 GHz
24162
24162
AMD EPYC 7251
8C 16T @ 2.1 GHz
18947
18947

Estimated results for PassMark CPU Mark

AMD EPYC 7251
8C 16T @ 2.1 GHz
14936
14936
Intel Core i7-7800X
6C 12T @ 3.5 GHz
12866
12866

Geekbench 5, 64bit (Multi-Core)

Intel Core i7-7800X
6C 12T @ 3.5 GHz
6759
6759
AMD EPYC 7251
8C 16T @ 2.1 GHz
4634
4634

Geekbench 3, 64bit (Single-Core)

Intel Core i7-7800X
6C 12T @ 3.5 GHz
4763
4763
AMD EPYC 7251
8C 16T @ 2.1 GHz
3410
3410

Cinebench R15 (Multi-Core)

Intel Core i7-7800X
6C 12T @ 3.5 GHz
1285
1285
AMD EPYC 7251
8C 16T @ 2.1 GHz
1093
1093

Geekbench 5, 64bit (Single-Core)

Intel Core i7-7800X
6C 12T @ 3.5 GHz
1114
1114
AMD EPYC 7251
8C 16T @ 2.1 GHz
783
783

Cinebench R15 (Single-Core)

Intel Core i7-7800X
6C 12T @ 3.5 GHz
184
184
AMD EPYC 7251
8C 16T @ 2.1 GHz
128
128

Cinebench R11.5, 64bit (Multi-Core)

Intel Core i7-7800X
6C 12T @ 3.5 GHz
14.1
14.1
AMD EPYC 7251
8C 16T @ 2.1 GHz
11.0
11.0

Cinebench R11.5, 64bit (Single-Core)

Intel Core i7-7800X
6C 12T @ 3.5 GHz
2.1
2.1
AMD EPYC 7251
8C 16T @ 2.1 GHz
1.6
1.6