Intel Pentium E6500K vs Intel Xeon W3580

Comparative analysis of Intel Pentium E6500K and Intel Xeon W3580 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, 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 Pentium E6500K

Intel Xeon W3580

Differences

Reasons to consider the Intel Pentium E6500K

Processor is unlocked, an unlocked multiplier allows for easier overclocking
Around 9% higher maximum core temperature: 74.1°C vs 67.9°C
2x more L2 cache, more data can be stored in the L2 cache for quick access later
2x lower typical power consumption: 65 Watt vs 130 Watt

Unlocked	Unlocked vs Locked
Maximum core temperature	74.1°C vs 67.9°C
L2 cache	2048 KB (shared) vs 256 KB (per core)
Thermal Design Power (TDP)	65 Watt vs 130 Watt

Reasons to consider the Intel Xeon W3580

2 more cores, run more applications at once: 4 vs 2
Around 23% higher clock speed: 3.60 GHz vs 2.93 GHz
2x more L1 cache, more data can be stored in the L1 cache for quick access later

Number of cores	4 vs 2
Maximum frequency	3.60 GHz vs 2.93 GHz
L1 cache	64 KB (per core) vs 64 KB (per core)

Compare benchmarks

CPU 1: Intel Pentium E6500K
CPU 2: Intel Xeon W3580

Name	Intel Pentium E6500K	Intel Xeon W3580
PassMark - Single thread mark		1556
PassMark - CPU mark		3638
Geekbench 4 - Single Core		2764
Geekbench 4 - Multi-Core		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 Pentium E6500K	Intel Xeon W3580
Essentials
Architecture codename	Wolfdale	Bloomfield
Launch date	August 2009	August 2009
Place in performance rating	not rated	1840
Processor Number	E6500K	W3580
Series	Legacy Intel® Pentium® Processor	Legacy Intel® Xeon® Processors
Status	Discontinued	Discontinued
Vertical segment	Desktop	Server
Launch price (MSRP)		$215
Price now		$214.50
Value for money (0-100)		8.83
Performance
64 bit support
Base frequency	2.93 GHz	3.33 GHz
Bus Speed	1066 MHz FSB	6.4 GT/s QPI
Die size	82 mm2	263 mm2
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	2048 KB (shared)	256 KB (per core)
Manufacturing process technology	45 nm	45 nm
Maximum core temperature	74.1°C	67.9°C
Maximum frequency	2.93 GHz	3.60 GHz
Number of cores	2	4
Transistor count	228 million	731 million
Unlocked
VID voltage range	0.85V – 1.3625V	0.800V-1.375V
L3 cache		8192 KB (shared)
Number of QPI Links		1
Number of threads		8
Memory
Supported memory types	DDR1, DDR2, DDR3	DDR3 800/1066/1333
ECC memory support
Max memory channels		3
Maximum memory bandwidth		32 GB/s
Maximum memory size		24 GB
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	1
Sockets supported	LGA775	FCLGA1366
Thermal Design Power (TDP)	65 Watt	130 Watt
Package Size		42.5mm x 45.0mm
Security & Reliability
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
Idle States
Intel 64
Intel® AES New Instructions
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Thermal Monitoring
Instruction set extensions		Intel® SSE4.2
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)