Intel Xeon E3-1275 v6 vs AMD EPYC 7251

Comparative analysis of Intel Xeon E3-1275 v6 and AMD EPYC 7251 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Graphics, Graphics interfaces, Graphics image quality, Graphics API support, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core.

Intel Xeon E3-1275 v6

AMD EPYC 7251

Differences

Reasons to consider the Intel Xeon E3-1275 v6

Around 45% higher clock speed: 4.20 GHz vs 2.9 GHz
Around 64% lower typical power consumption: 73 Watt vs 120 Watt
Around 53% better performance in PassMark - Single thread mark: 2549 vs 1671

Specifications (specs)
Maximum frequency	4.20 GHz vs 2.9 GHz
Thermal Design Power (TDP)	73 Watt vs 120 Watt
Benchmarks
PassMark - Single thread mark	2549 vs 1671

Reasons to consider the AMD EPYC 7251

Processor is unlocked, an unlocked multiplier allows for easier overclocking
4 more cores, run more applications at once: 8 vs 4
8 more threads: 16 vs 8
Around 61% better performance in PassMark - CPU mark: 14935 vs 9285

Specifications (specs)
Unlocked	Unlocked vs Locked
Number of cores	8 vs 4
Number of threads	16 vs 8
Max number of CPUs in a configuration	2 vs 1
Benchmarks
PassMark - CPU mark	14935 vs 9285

Compare benchmarks

CPU 1: Intel Xeon E3-1275 v6
CPU 2: AMD EPYC 7251

PassMark - Single thread mark

CPU 1

CPU 2

2549

1671

PassMark - CPU mark

CPU 1

CPU 2

9285

14935

Name	Intel Xeon E3-1275 v6	AMD EPYC 7251
PassMark - Single thread mark	2549	1671
PassMark - CPU mark	9285	14935
Geekbench 4 - Single Core	1103
Geekbench 4 - Multi-Core	4237

Compare specifications (specs)

	Intel Xeon E3-1275 v6	AMD EPYC 7251
Essentials
Architecture codename	Kaby Lake	Zen
Launch date	Q1'17	June 2017
Place in performance rating	1232	1272
Processor Number	E3-1275V6
Series	Intel® Xeon® Processor E3 v6 Family	AMD EPYC 7000 Series
Status	Launched
Vertical segment	Server	Server
Family		AMD EPYC
Performance
64 bit support
Base frequency	3.80 GHz	2.1 GHz
Bus Speed	8 GT/s DMI3
Manufacturing process technology	14 nm	14 nm
Maximum frequency	4.20 GHz	2.9 GHz
Number of cores	4	8
Number of threads	8	16
VID voltage range	0.55V-1.52V
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	2	8
Maximum memory bandwidth	37.5 GB/s	307 GB/s
Maximum memory size	64 GB
Supported memory types	DDR4-2400, DDR3L-1866	DDR4
Supported memory frequency		2400 MHz
Graphics
Device ID	0x591D
Graphics base frequency	350 MHz
Graphics max dynamic frequency	1.15 GHz
Intel® Clear Video HD technology
Intel® Clear Video technology
Intel® InTru™ 3D technology
Intel® Quick Sync Video
Max video memory	64 GB
Processor graphics	Intel® HD Graphics P630
Graphics interfaces
DisplayPort
DVI
eDP
HDMI
Number of displays supported	3
Graphics image quality
4K resolution support
Max resolution over DisplayPort	4096x2304@60Hz
Max resolution over eDP	4096x2304@60Hz
Max resolution over HDMI 1.4	4096x2160@24Hz
Graphics API support
DirectX	12
OpenGL	4.4
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	2
Package Size	37.5mm x 37.5mm
Sockets supported	FCLGA1151	TR4
Thermal Design Power (TDP)	73 Watt	120 Watt
Socket Count		1P/2P
Peripherals
Max number of PCIe lanes	16
PCI Express revision	3.0	x128
PCIe configurations	1x16, 2x8, 1x8+2x4
Scalability	1S Only
Security & Reliability
Execute Disable Bit (EDB)
Intel® Memory Protection Extensions (Intel® MPX)
Intel® OS Guard
Intel® Secure Key technology
Intel® Software Guard Extensions (Intel® SGX)
Intel® Trusted Execution technology (TXT)
Secure Boot
Advanced Technologies
Enhanced Intel SpeedStep® technology
Idle States
Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
Intel 64
Intel® AES New Instructions
Intel® Hyper-Threading technology
Intel® Optane™ Memory Supported
Intel® TSX-NI
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
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™)