Core i7-7820EQ vs Core 2 Duo E6400

VS

Aggregate performance score

Core 2 Duo E6400
2006
2 cores / 2 threads, 65 Watt
0.49
Core i7-7820EQ
2017
4 cores / 8 threads, 45 Watt
4.75
+869%

Core i7-7820EQ outperforms Core 2 Duo E6400 by a whopping 869% based on our aggregate benchmark results.

Primary details

Comparing Core 2 Duo E6400 and Core i7-7820EQ processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking29021266
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorLaptop
Seriesno dataIntel Core i7
Power efficiency0.719.99
Architecture codenameConroe (2006−2007)Kaby Lake (2016−2019)
Release dateJuly 2006 (18 years ago)3 January 2017 (7 years ago)
Launch price (MSRP)no data$378

Detailed specifications

Core 2 Duo E6400 and Core i7-7820EQ 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 cores2 (Dual-core)4 (Quad-Core)
Threads28
Base clock speed2.13 GHzno data
Boost clock speed2.13 GHz3.1 GHz
Bus typeno dataDMI 3.0
Bus rate1066 MHz8 GT/s
Multiplierno data31
L1 cache64 KB256 KB
L2 cache2 MB1 MB
L3 cache0 KB8 MB
Chip lithography65 nm14 nm
Die size143 mm2no data
Maximum core temperature61 °Cno data
Number of transistors291 millionno data
64 bit support++
Windows 11 compatibility--
VID voltage range0.85V-1.5Vno data

Compatibility

Information on Core 2 Duo E6400 and Core i7-7820EQ 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 configuration11 (Uniprocessor)
SocketLGA775,PLGA775no data
Power consumption (TDP)65 Watt45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo E6400 and Core i7-7820EQ. You'll probably need this information if you require some particular technology.

AES-NI-+
AVX-+
vProno data+
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 E6400 and Core i7-7820EQ 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 E6400 and Core i7-7820EQ are enumerated here.

VT-dno data+
VT-x++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Duo E6400 and Core i7-7820EQ. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1, DDR2, DDR3DDR3L-1600
Maximum memory sizeno data64 GB
Max memory channelsno data2
Maximum memory bandwidthno data34.134 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataIntel HD Graphics 630

Peripherals

Specifications and connection of peripherals supported by Core 2 Duo E6400 and Core i7-7820EQ.

PCIe versionno data3.0
PCI Express lanesno data16

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.


Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Core 2 Duo E6400 0.49
i7-7820EQ 4.75
+869%

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Core 2 Duo E6400 780
i7-7820EQ 7542
+867%

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Core 2 Duo E6400 233
i7-7820EQ 746
+220%

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Core 2 Duo E6400 374
i7-7820EQ 1922
+414%

Gaming performance

Pros & cons summary


Performance score 0.49 4.75
Physical cores 2 4
Threads 2 8
Chip lithography 65 nm 14 nm
Power consumption (TDP) 65 Watt 45 Watt

i7-7820EQ has a 869.4% higher aggregate performance score, 100% more physical cores and 300% more threads, a 364.3% more advanced lithography process, and 44.4% lower power consumption.

The Core i7-7820EQ is our recommended choice as it beats the Core 2 Duo E6400 in performance tests.

Note that Core 2 Duo E6400 is a desktop processor while Core i7-7820EQ is a notebook one.


Should you still have questions on choice between Core 2 Duo E6400 and Core i7-7820EQ, ask them in Comments section, and we shall answer.

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Intel Core 2 Duo E6400
Core 2 Duo E6400
Intel Core i7-7820EQ
Core i7-7820EQ

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Community ratings

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Questions & comments

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