Intel Core 2 Duo E6420 vs Intel Core 2 Duo E6400

Comparative analysis of Intel Core 2 Duo E6420 and Intel Core 2 Duo E6400 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.

Intel Core 2 Duo E6420

Intel Core 2 Duo E6400

Differences

Reasons to consider the Intel Core 2 Duo E6420

CPU is newer: launch date 9 month(s) later
2x more L2 cache, more data can be stored in the L2 cache for quick access later
Around 21% better performance in Geekbench 4 - Single Core: 296 vs 244
Around 31% better performance in Geekbench 4 - Multi-Core: 541 vs 413

Specifications (specs)
Launch date	April 2007 vs July 2006
L2 cache	4096 KB vs 2048 KB
Benchmarks
Geekbench 4 - Single Core	296 vs 244
Geekbench 4 - Multi-Core	541 vs 413

Reasons to consider the Intel Core 2 Duo E6400

Around 2% higher maximum core temperature: 61.4°C vs 60.1°C
Around 6% better performance in PassMark - Single thread mark: 825 vs 781
Around 4% better performance in PassMark - CPU mark: 780 vs 752

Specifications (specs)
Maximum core temperature	61.4°C vs 60.1°C
Benchmarks
PassMark - Single thread mark	825 vs 781
PassMark - CPU mark	780 vs 752

Compare benchmarks

CPU 1: Intel Core 2 Duo E6420
CPU 2: Intel Core 2 Duo E6400

PassMark - Single thread mark

CPU 1

CPU 2

781

825

PassMark - CPU mark

CPU 1

CPU 2

752

780

Geekbench 4 - Single Core

CPU 1

CPU 2

296

244

Geekbench 4 - Multi-Core

CPU 1

CPU 2

541

413

Name	Intel Core 2 Duo E6420	Intel Core 2 Duo E6400
PassMark - Single thread mark	781	825
PassMark - CPU mark	752	780
Geekbench 4 - Single Core	296	244
Geekbench 4 - Multi-Core	541	413

Compare specifications (specs)

	Intel Core 2 Duo E6420	Intel Core 2 Duo E6400
Essentials
Architecture codename	Conroe	Conroe
Launch date	April 2007	July 2006
Place in performance rating	2903	2914
Price now	$49.99	$19.95
Processor Number	E6420	E6400
Series	Legacy Intel® Core™ Processors	Legacy Intel® Core™ Processors
Status	Discontinued	Discontinued
Value for money (0-100)	8.02	19.03
Vertical segment	Desktop	Desktop
Performance
64 bit support
Base frequency	2.13 GHz	2.13 GHz
Bus Speed	1066 MHz FSB	1066 MHz FSB
Die size	143 mm2	111 mm2
L1 cache	64 KB	64 KB
L2 cache	4096 KB	2048 KB
Manufacturing process technology	65 nm	65 nm
Maximum core temperature	60.1°C	61.4°C
Maximum frequency	2.13 GHz	2.13 GHz
Number of cores	2	2
Transistor count	291 million	167 million
VID voltage range	0.8500V-1.5V	0.8500V-1.5V
Memory
Supported memory types	DDR1, DDR2, DDR3	DDR1, DDR2, DDR3
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	1
Package Size	37.5mm x 37.5mm	37.5mm x 37.5mm
Sockets supported	PLGA775	PLGA775, LGA775
Thermal Design Power (TDP)	65 Watt	65 Watt
Scenario Design Power (SDP)		0 W
Security & Reliability
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
FSB parity
Idle States
Intel 64
Intel® AES New Instructions
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Thermal Monitoring
Virtualization
Intel® Virtualization Technology (VT-x)