Core i7-7740K vs Core 2 Duo E8400

Primary details

Comparing Core 2 Duo E8400 and Core i7-7740K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2665	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Desktop processor
Power efficiency	1.07	no data
Architecture codename	Wolfdale (2008−2010)	Kaby Lake-X (2017)
Release date	1 January 2008 (16 years ago)	no data (2024 years ago)

Detailed specifications

Core 2 Duo E8400 and Core i7-7740K basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	2 (Dual-core)	4 (Quad-Core)
Threads	2	no data
Base clock speed	3 GHz	no data
Boost clock speed	3 GHz	4.3 GHz
Bus rate	1333 MHz	no data
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	6 MB (shared)	256 KB (per core)
L3 cache	0 KB	8192 KB (shared)
Chip lithography	45 nm	14 nm
Die size	104 mm2	no data
Maximum case temperature (TCase)	72 °C	72 °C
Number of transistors	410 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	-	+
VID voltage range	0.85V-1.3625V	no data

Compatibility

Information on Core 2 Duo E8400 and Core i7-7740K compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	1	1
Socket	LGA775	1151
Power consumption (TDP)	65 Watt	112 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo E8400 and Core i7-7740K. You'll probably need this information if you require some particular technology.

AES-NI	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
TSX	-	+
Idle States	+	no data
Thermal Monitoring	+	-
Demand Based Switching	-	no data
FSB parity	-	no data

Security technologies

Core 2 Duo E8400 and Core i7-7740K technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Duo E8400 and Core i7-7740K are enumerated here.

VT-d	+	+
VT-x	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Duo E8400 and Core i7-7740K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR1, DDR2, DDR3

DDR4

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

On certain motherboards (Chipset feature)

HD 630

Peripherals

Specifications and connection of peripherals supported by Core 2 Duo E8400 and Core i7-7740K.

PCIe version

2.0

no data

Pros & cons summary

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Physical cores	2	4
Chip lithography	45 nm	14 nm
Power consumption (TDP)	65 Watt	112 Watt

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