Intel Xeon E5-4640 v4 vs AMD EPYC 7251

Comparative analysis of Intel Xeon E5-4640 v4 and AMD EPYC 7251 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark.

 

Differences

Reasons to consider the Intel Xeon E5-4640 v4

  • 4 more cores, run more applications at once: 12 vs 8
  • 8 more threads: 24 vs 16
  • Around 14% lower typical power consumption: 105 Watt vs 120 Watt
  • Around 51% better performance in PassMark - CPU mark: 22559 vs 14935
Specifications (specs)
Number of cores 12 vs 8
Number of threads 24 vs 16
Max number of CPUs in a configuration 4 vs 2
Thermal Design Power (TDP) 105 Watt vs 120 Watt
Benchmarks
PassMark - CPU mark 22559 vs 14935

Reasons to consider the AMD EPYC 7251

  • Processor is unlocked, an unlocked multiplier allows for easier overclocking
  • Around 12% higher clock speed: 2.9 GHz vs 2.60 GHz
  • Around 6% better performance in PassMark - Single thread mark: 1671 vs 1573
Specifications (specs)
Unlocked Unlocked vs Locked
Maximum frequency 2.9 GHz vs 2.60 GHz
Benchmarks
PassMark - Single thread mark 1671 vs 1573

Compare benchmarks

CPU 1: Intel Xeon E5-4640 v4
CPU 2: AMD EPYC 7251

PassMark - Single thread mark
CPU 1
CPU 2
1573
1671
PassMark - CPU mark
CPU 1
CPU 2
22559
14935
Name Intel Xeon E5-4640 v4 AMD EPYC 7251
PassMark - Single thread mark 1573 1671
PassMark - CPU mark 22559 14935

Compare specifications (specs)

Intel Xeon E5-4640 v4 AMD EPYC 7251

Essentials

Architecture codename Broadwell Zen
Launch date Q2'16 June 2017
Place in performance rating 1199 1273
Processor Number E5-4640V4
Series Intel® Xeon® Processor E5 v4 Family AMD EPYC 7000 Series
Status Launched
Vertical segment Server Server
Family AMD EPYC

Performance

64 bit support
Base frequency 2.10 GHz 2.1 GHz
Bus Speed 8 GT/s QPI
Manufacturing process technology 14 nm 14 nm
Maximum core temperature 80
Maximum frequency 2.60 GHz 2.9 GHz
Number of cores 12 8
Number of QPI Links 2
Number of threads 24 16
Die size 192 mm
L1 cache 96 KB (per core)
L2 cache 512 KB (per core)
L3 cache 32 MB
Transistor count 4800 million
Unlocked

Memory

Max memory channels 4 8
Maximum memory bandwidth 68 GB/s 307 GB/s
Maximum memory size 1.5 TB
Supported memory types DDR4 DDR4
Supported memory frequency 2400 MHz

Compatibility

Low Halogen Options Available
Max number of CPUs in a configuration 4 2
Package Size 45mm x 52.5mm
Sockets supported FCLGA2011-3 TR4
Thermal Design Power (TDP) 105 Watt 120 Watt
Socket Count 1P/2P

Peripherals

Max number of PCIe lanes 40
PCI Express revision 3.0 x128
PCIe configurations x4, x8, x16
Scalability 4S

Security & Reliability

Execute Disable Bit (EDB)
Intel® OS Guard
Intel® Secure Key technology
Intel® Trusted Execution technology (TXT)

Advanced Technologies

Enhanced Intel SpeedStep® technology
Idle States
Instruction set extensions Intel® AVX2
Intel 64
Intel® AES New Instructions
Intel® Flex Memory Access
Intel® Hyper-Threading technology
Intel® Instruction Replay Technology
Intel® TSX-NI
Intel® Turbo Boost technology
Physical Address Extensions (PAE) 46-bit
Thermal Monitoring

Virtualization

Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)
AMD Virtualization (AMD-V™)