Intel Xeon E3-1275 v2 vs Intel Xeon E5-4603

Comparative analysis of Intel Xeon E3-1275 v2 and Intel Xeon E5-4603 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Graphics, Graphics interfaces, 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, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - T-Rex (Fps).

Intel Xeon E3-1275 v2

Intel Xeon E5-4603

Differences

Reasons to consider the Intel Xeon E3-1275 v2

Around 95% higher clock speed: 3.90 GHz vs 2 GHz
A newer manufacturing process allows for a more powerful, yet cooler running processor: 22 nm vs 32 nm
Around 23% lower typical power consumption: 77 Watt vs 95 Watt
2.1x better performance in PassMark - Single thread mark: 2122 vs 995

Specifications (specs)
Maximum frequency	3.90 GHz vs 2 GHz
Manufacturing process technology	22 nm vs 32 nm
Thermal Design Power (TDP)	77 Watt vs 95 Watt
Benchmarks
PassMark - Single thread mark	2122 vs 995

Reasons to consider the Intel Xeon E5-4603

Around 25% more L3 cache; more data can be stored in the L3 cache for quick access later
11.7x more maximum memory size: 384 GB vs 32.77 GB
Around 1% better performance in PassMark - CPU mark: 6690 vs 6616

Specifications (specs)
L3 cache	10240 KB (shared) vs 8192 KB (shared)
Maximum memory size	384 GB vs 32.77 GB
Max number of CPUs in a configuration	4 vs 1
Benchmarks
PassMark - CPU mark	6690 vs 6616

Compare benchmarks

CPU 1: Intel Xeon E3-1275 v2
CPU 2: Intel Xeon E5-4603

PassMark - Single thread mark

CPU 1

CPU 2

2122

995

PassMark - CPU mark

CPU 1

CPU 2

6616

6690

Name	Intel Xeon E3-1275 v2	Intel Xeon E5-4603
PassMark - Single thread mark	2122	995
PassMark - CPU mark	6616	6690
Geekbench 4 - Single Core	821
Geekbench 4 - Multi-Core	3076
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	4.685
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	15.885
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.56
CompuBench 1.5 Desktop - Video Composition (Frames/s)	2.319
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	5.602
GFXBench 4.0 - T-Rex (Frames)	2590
GFXBench 4.0 - T-Rex (Fps)	2590

Compare specifications (specs)

	Intel Xeon E3-1275 v2	Intel Xeon E5-4603
Essentials
Architecture codename	Ivy Bridge	Sandy Bridge EP
Launch date	May 2012	May 2012
Launch price (MSRP)	$808	$712
Place in performance rating	2085	2097
Price now	$394.72	$1,890.99
Processor Number	E3-1275V2	E5-4603
Series	Intel® Xeon® Processor E3 v2 Family	Intel® Xeon® Processor E5 Family
Status	Launched	Discontinued
Value for money (0-100)	7.05	0.78
Vertical segment	Server	Server
Performance
64 bit support
Base frequency	3.50 GHz	2.00 GHz
Bus Speed	5 GT/s DMI	6.4 GT/s QPI
Die size	160 mm	294 mm
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	256 KB (per core)	256 KB (per core)
L3 cache	8192 KB (shared)	10240 KB (shared)
Manufacturing process technology	22 nm	32 nm
Maximum frequency	3.90 GHz	2 GHz
Number of cores	4	4
Number of threads	8	8
Transistor count	1400 million	1270 million
Number of QPI Links		2
VID voltage range		0.6V-1.35V
Memory
ECC memory support
Max memory channels	2	4
Maximum memory bandwidth	25.6 GB/s	34.1 GB/s
Maximum memory size	32.77 GB	384 GB
Supported memory types	DDR3 1333/1600	DDR3 800/1066
Graphics
Graphics base frequency	650 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 P4000
Graphics interfaces
Number of displays supported	3
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	4
Package Size	37.5mm x 37.5mm	52.5mm x 45.0mm
Sockets supported	FCLGA1155	FCLGA2011
Thermal Design Power (TDP)	77 Watt	95 Watt
Peripherals
PCI Express revision	3.0	3.0
PCIe configurations	1x16 & 1x4, 2x8 & 1x4 or 1x8 & 3x4
Max number of PCIe lanes		40
Scalability		4S Only
Security & Reliability
Execute Disable Bit (EDB)
Intel® Identity Protection technology
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
Flexible Display interface (FDI)
Idle States
Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX	Intel® AVX
Intel 64
Intel® Advanced Vector Extensions (AVX)
Intel® AES New Instructions
Intel® Demand Based Switching
Intel® Fast Memory Access
Intel® Flex Memory Access
Intel® Hyper-Threading technology
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)