Intel Xeon E5-2603 v2 vs Intel Xeon E3-1275 v3

Comparative analysis of Intel Xeon E5-2603 v2 and Intel Xeon E3-1275 v3 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization, Graphics, Graphics interfaces. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, CompuBench 1.5 Desktop - Face Detection (mPixels/s).

Intel Xeon E5-2603 v2

Intel Xeon E3-1275 v3

Differences

Reasons to consider the Intel Xeon E5-2603 v2

CPU is newer: launch date 3 month(s) later
Around 25% more L3 cache; more data can be stored in the L3 cache for quick access later
24x more maximum memory size: 768 GB vs 32 GB
Around 5% lower typical power consumption: 80 Watt vs 84 Watt
2.1x better performance in Geekbench 4 - Single Core: 1865 vs 909
Around 60% better performance in Geekbench 4 - Multi-Core: 5459 vs 3422

Specifications (specs)
Launch date	September 2013 vs June 2013
L3 cache	10240 KB (shared) vs 8192 KB (shared)
Maximum memory size	768 GB vs 32 GB
Max number of CPUs in a configuration	2 vs 1
Thermal Design Power (TDP)	80 Watt vs 84 Watt
Benchmarks
Geekbench 4 - Single Core	1865 vs 909
Geekbench 4 - Multi-Core	5459 vs 3422

Reasons to consider the Intel Xeon E3-1275 v3

4 more threads: 8 vs 4
Around 117% higher clock speed: 3.90 GHz vs 1.8 GHz
2.2x better performance in PassMark - Single thread mark: 2201 vs 991
Around 44% better performance in PassMark - CPU mark: 7213 vs 5017

Specifications (specs)
Number of threads	8 vs 4
Maximum frequency	3.90 GHz vs 1.8 GHz
Benchmarks
PassMark - Single thread mark	2201 vs 991
PassMark - CPU mark	7213 vs 5017

Compare benchmarks

CPU 1: Intel Xeon E5-2603 v2
CPU 2: Intel Xeon E3-1275 v3

PassMark - Single thread mark

CPU 1

CPU 2

991

2201

PassMark - CPU mark

CPU 1

CPU 2

5017

7213

Geekbench 4 - Single Core

CPU 1

CPU 2

1865

909

Geekbench 4 - Multi-Core

CPU 1

CPU 2

5459

3422

Name	Intel Xeon E5-2603 v2	Intel Xeon E3-1275 v3
PassMark - Single thread mark	991	2201
PassMark - CPU mark	5017	7213
Geekbench 4 - Single Core	1865	909
Geekbench 4 - Multi-Core	5459	3422
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		16.134

Compare specifications (specs)

	Intel Xeon E5-2603 v2	Intel Xeon E3-1275 v3
Essentials
Architecture codename	Ivy Bridge EP	Haswell
Launch date	September 2013	June 2013
Launch price (MSRP)	$240	$531
Place in performance rating	1516	1506
Price now	$39.09	$400.99
Processor Number	E5-2603V2	E3-1275 v3
Series	Intel® Xeon® Processor E5 v2 Family	Intel® Xeon® Processor E3 v3 Family
Status	Launched	Launched
Value for money (0-100)	28.38	7.26
Vertical segment	Server	Server
Performance
64 bit support
Base frequency	1.80 GHz	3.50 GHz
Bus Speed	6.4 GT/s QPI	5 GT/s DMI
Die size	160 mm	160 mm
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	256 KB (per core)	256 KB (per core)
L3 cache	10240 KB (shared)	8192 KB (shared)
Manufacturing process technology	22 nm	22 nm
Maximum core temperature	71°C
Maximum frequency	1.8 GHz	3.90 GHz
Number of cores	4	4
Number of QPI Links	2	0
Number of threads	4	8
Transistor count	1400 million	1400 million
VID voltage range	0.65–1.30V
Memory
ECC memory support
Max memory channels	4	2
Maximum memory bandwidth	42.6 GB/s	25.6 GB/s
Maximum memory size	768 GB	32 GB
Supported memory types	DDR3 800/1066/1333	DDR3 and DDR3L 1333/1600 at 1.5V
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	2	1
Package Size	52.5mm x 45mm	37.5mm x 37.5mm
Sockets supported	FCLGA2011	FCLGA1150
Thermal Design Power (TDP)	80 Watt	84 Watt
Thermal Solution		PCG 2013D
Peripherals
Max number of PCIe lanes	40	16
PCI Express revision	3.0	3.0
PCIe configurations	x4, x8, x16	1x16, 2x8, 1x8/2x4
Scalability	2S Only	1S Only
Security & Reliability
Execute Disable Bit (EDB)
Intel® Identity Protection technology
Intel® OS Guard
Intel® Secure Key technology
Intel® Trusted Execution technology (TXT)
Anti-Theft technology
Advanced Technologies
Enhanced Intel SpeedStep® technology
Idle States
Instruction set extensions	Intel® AVX	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
Intel 64
Intel® Advanced Vector Extensions (AVX)
Intel® AES New Instructions
Intel® Demand Based Switching
Intel® Flex Memory Access
Intel® Hyper-Threading technology
Intel® TSX-NI
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Physical Address Extensions (PAE)	46-bit
Thermal Monitoring
Flexible Display interface (FDI)
Intel® Fast Memory Access
Intel® Stable Image Platform Program (SIPP)
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)
Graphics
Graphics base frequency		350 MHz
Graphics max dynamic frequency		1.25 GHz
Graphics max frequency		1.25 GHz
Intel® Clear Video HD technology
Intel® Flexible Display Interface (Intel® FDI)
Intel® InTru™ 3D technology
Intel® Quick Sync Video
Processor graphics		Intel HD Graphics P4600
Graphics interfaces
Number of displays supported		3