Intel Xeon E5-2643 vs Intel Xeon W3580

Comparative analysis of Intel Xeon E5-2643 and Intel Xeon W3580 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, 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).

Intel Xeon E5-2643

Intel Xeon W3580

Differences

Reasons to consider the Intel Xeon E5-2643

CPU is newer: launch date 2 year(s) 6 month(s) later
Around 8% higher maximum core temperature: 73°C vs 67.9°C
A newer manufacturing process allows for a more powerful, yet cooler running processor: 32 nm vs 45 nm
Around 25% more L3 cache; more data can be stored in the L3 cache for quick access later
16x more maximum memory size: 384 GB vs 24 GB
Around 3% better performance in PassMark - Single thread mark: 1598 vs 1557
2.7x better performance in PassMark - CPU mark: 9748 vs 3609

Specifications (specs)
Launch date	March 2012 vs August 2009
Maximum core temperature	73°C vs 67.9°C
Manufacturing process technology	32 nm vs 45 nm
L3 cache	10240 KB (shared) vs 8192 KB (shared)
Maximum memory size	384 GB vs 24 GB
Max number of CPUs in a configuration	2 vs 1
Benchmarks
PassMark - Single thread mark	1598 vs 1557
PassMark - CPU mark	9748 vs 3609

Reasons to consider the Intel Xeon W3580

Around 3% higher clock speed: 3.60 GHz vs 3.50 GHz
4.3x better performance in Geekbench 4 - Single Core: 2764 vs 638
3.4x better performance in Geekbench 4 - Multi-Core: 9280 vs 2761

Specifications (specs)
Maximum frequency	3.60 GHz vs 3.50 GHz
Benchmarks
Geekbench 4 - Single Core	2764 vs 638
Geekbench 4 - Multi-Core	9280 vs 2761

Compare benchmarks

CPU 1: Intel Xeon E5-2643
CPU 2: Intel Xeon W3580

PassMark - Single thread mark

CPU 1

CPU 2

1598

1557

PassMark - CPU mark

CPU 1

CPU 2

9748

3609

Geekbench 4 - Single Core

CPU 1

CPU 2

638

2764

Geekbench 4 - Multi-Core

CPU 1

CPU 2

2761

9280

Name	Intel Xeon E5-2643	Intel Xeon W3580
PassMark - Single thread mark	1598	1557
PassMark - CPU mark	9748	3609
Geekbench 4 - Single Core	638	2764
Geekbench 4 - Multi-Core	2761	9280
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		1.101
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		57.868
CompuBench 1.5 Desktop - T-Rex (Frames/s)		0.357
CompuBench 1.5 Desktop - Video Composition (Frames/s)		1.789
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)		5.116

Compare specifications (specs)

	Intel Xeon E5-2643	Intel Xeon W3580
Essentials
Architecture codename	Sandy Bridge EP	Bloomfield
Launch date	March 2012	August 2009
Launch price (MSRP)	$218	$215
Place in performance rating	1780	1770
Price now	$2,664	$214.50
Processor Number	E5-2643	W3580
Series	Intel® Xeon® Processor E5 Family	Legacy Intel® Xeon® Processors
Status	Discontinued	Discontinued
Value for money (0-100)	0.93	8.83
Vertical segment	Server	Server
Performance
64 bit support
Base frequency	3.30 GHz	3.33 GHz
Bus Speed	8 GT/s QPI	6.4 GT/s QPI
Die size	294 mm	263 mm2
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	32 nm	45 nm
Maximum core temperature	73°C	67.9°C
Maximum frequency	3.50 GHz	3.60 GHz
Number of cores	4	4
Number of QPI Links	2	1
Number of threads	8	8
Transistor count	1270 million	731 million
VID voltage range	0.60V-1.35V	0.800V-1.375V
Memory
ECC memory support
Max memory channels	4	3
Maximum memory bandwidth	51.2 GB/s	32 GB/s
Maximum memory size	384 GB	24 GB
Supported memory types	DDR3 800/1066/1333/1600	DDR3 800/1066/1333
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	2	1
Package Size	52.5mm x 45.0mm	42.5mm x 45.0mm
Sockets supported	FCLGA2011	FCLGA1366
Thermal Design Power (TDP)	130 Watt	130 Watt
Peripherals
Max number of PCIe lanes	40
PCI Express revision	3.0
Scalability	2S Only
Security & Reliability
Execute Disable Bit (EDB)
Intel® Identity Protection technology
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
Idle States
Instruction set extensions	Intel® AVX	Intel® SSE4.2
Intel 64
Intel® Advanced Vector Extensions (AVX)
Intel® AES New Instructions
Intel® Demand Based Switching
Intel® Flex Memory Access
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Thermal Monitoring
Physical Address Extensions (PAE)		36-bit
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)