Core i9-11900K vs Core 2 Duo E6420

VS

Aggregate performance score

Core 2 Duo E6420
2007
2 cores / 2 threads, 65 Watt
0.47
Core i9-11900K
2021
8 cores / 16 threads, 125 Watt
15.86
+3274%

Core i9-11900K outperforms Core 2 Duo E6420 by a whopping 3274% based on our aggregate benchmark results.

Primary details

Comparing Core 2 Duo E6420 and Core i9-11900K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking2920429
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data18.91
Market segmentDesktop processorDesktop processor
Power efficiency0.6812.00
Architecture codenameConroe (2006−2007)Rocket Lake (2021)
Release dateApril 2007 (17 years ago)16 March 2021 (3 years ago)
Launch price (MSRP)no data$539

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core 2 Duo E6420 and Core i9-11900K 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)8 (Octa-Core)
Threads216
Base clock speed2.13 GHz3.5 GHz
Boost clock speed2.13 GHz5.2 GHz
Bus rate1066 MHz8 GT/s
L1 cache64 KB80 KB (per core)
L2 cache4 MB512 KB (per core)
L3 cache0 KB16 MB (shared)
Chip lithography65 nm14 nm
Die size111 mm2276 mm2
Maximum core temperature60 °C100 °C
Maximum case temperature (TCase)no data72 °C
Number of transistors167 millionno data
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier-+
VID voltage range0.85V-1.5Vno data

Compatibility

Information on Core 2 Duo E6420 and Core i9-11900K 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
SocketPLGA775FCLGA1200
Power consumption (TDP)65 Watt125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo E6420 and Core i9-11900K. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI-+
AVX-+
vProno data+
Enhanced SpeedStep (EIST)++
Turbo Boost Technology-2.0
Hyper-Threading Technology-+
TSX-+
Idle States++
Thermal Monitoring++
SIPP-+
Demand Based Switching-no data
Turbo Boost Max 3.0no data+
FSB parity-no data
Deep Learning Boost-+

Security technologies

Core 2 Duo E6420 and Core i9-11900K technologies aimed at improving security, for example, by protecting against hacks.

TXT-+
EDB++
Secure Keyno data+
Identity Protection-+
SGXno data-
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Duo E6420 and Core i9-11900K are enumerated here.

VT-dno data+
VT-x++
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Duo E6420 and Core i9-11900K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1, DDR2, DDR3DDR4
Maximum memory sizeno data128 GB
Max memory channelsno data2
Maximum memory bandwidthno data50 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataIntel UHD Graphics 750
Max video memoryno data64 GB
Quick Sync Video-+
Clear Videono data+
Clear Video HDno data+
Graphics max frequencyno data1.3 GHz
Execution Unitsno data32
InTru 3Dno data+

Graphics interfaces

Available interfaces and connections of Core 2 Duo E6420 and Core i9-11900K integrated GPUs.

Number of displays supportedno data3

Graphics image quality

Maximum display resolutions supported by Core 2 Duo E6420 and Core i9-11900K integrated GPUs, including resolutions over different interfaces.

4K resolution supportno data+
Max resolution over HDMI 1.4no data4096x2160@60Hz
Max resolution over eDPno data5120 x 3200 @60Hz
Max resolution over DisplayPortno data5120 x 3200 @60Hz

Graphics API support

APIs supported by Core 2 Duo E6420 and Core i9-11900K integrated GPUs, sometimes API versions are included.

DirectXno data12.1
OpenGLno data4.5

Peripherals

Specifications and connection of peripherals supported by Core 2 Duo E6420 and Core i9-11900K.

PCIe versionno data4.0
PCI Express lanesno data20

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 E6420 0.47
i9-11900K 15.86
+3274%

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 E6420 752
i9-11900K 25191
+3250%

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 E6420 285
i9-11900K 2391
+739%

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 E6420 513
i9-11900K 10979
+2040%

Gaming performance

Pros & cons summary


Performance score 0.47 15.86
Physical cores 2 8
Threads 2 16
Chip lithography 65 nm 14 nm
Power consumption (TDP) 65 Watt 125 Watt

Core 2 Duo E6420 has 92.3% lower power consumption.

i9-11900K, on the other hand, has a 3274.5% higher aggregate performance score, 300% more physical cores and 700% more threads, and a 364.3% more advanced lithography process.

The Core i9-11900K is our recommended choice as it beats the Core 2 Duo E6420 in performance tests.


Should you still have questions on choice between Core 2 Duo E6420 and Core i9-11900K, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


Intel Core 2 Duo E6420
Core 2 Duo E6420
Intel Core i9-11900K
Core i9-11900K

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Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


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Questions & comments

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