Intel Core i5-11400 vs Intel Core2 Duo E6600

Last updated:

CPU comparison with benchmarks


Intel Core i5-11400 CPU1 vs CPU2 Intel Core2 Duo E6600
Intel Core i5-11400 Intel Core2 Duo E6600

CPU comparison

Intel Core i5-11400 or Intel Core2 Duo E6600 - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.

The Intel Core i5-11400 has 6 cores with 12 threads and clocks with a maximum frequency of 4.40 GHz. Up to 128 GB of memory is supported in 2 memory channels. The Intel Core i5-11400 was released in Q1/2021.

The Intel Core2 Duo E6600 has 2 cores with 2 threads and clocks with a maximum frequency of 2.40 GHz. The CPU supports up to 16 GB of memory in 2 memory channels. The Intel Core2 Duo E6600 was released in Q3/2006.
Intel Core i5 (331) Family Intel Core2 Duo (29)
Intel Core i 11000 (22) CPU group Intel Core 2 Duo E4000/E6000 (15)
11 Generation 1
Rocket Lake S Architecture Conroe (Core)
Desktop / Server Segment Desktop / Server
Intel Core i5-10400 Predecessor --
Intel Core i5-12400 Successor --

CPU Cores and Base Frequency

The Intel Core i5-11400 has 6 CPU cores and can calculate 12 threads in parallel. The clock frequency of the Intel Core i5-11400 is 2.60 GHz (4.40 GHz) while the Intel Core2 Duo E6600 has 2 CPU cores and 2 threads can calculate simultaneously. The clock frequency of the Intel Core2 Duo E6600 is at 2.40 GHz.

Intel Core i5-11400 Characteristic Intel Core2 Duo E6600
6 Cores 2
12 Threads 2
normal Core architecture normal
Yes Hyperthreading No
No Overclocking ? Yes
2.60 GHz Frequency 2.40 GHz
4.40 GHz Turbo Frequency (1 Core) --
4.20 GHz Turbo Frequency (All Cores) --

Artificial Intelligence and Machine Learning

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.

Intel Core i5-11400 Characteristic Intel Core2 Duo E6600
-- AI hardware --
-- AI specifications --

Internal Graphics

The Intel Core i5-11400 or Intel Core2 Duo E6600 has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die.

Intel UHD Graphics 730 GPU no iGPU
0.35 GHz GPU frequency --
1.30 GHz GPU (Turbo) --
12 GPU Generation --
14 nm Technology
3 Max. displays
24 Compute units --
192 Shader --
No Hardware Raytracing No
No Frame Generation No
64 GB Max. GPU Memory --
12 DirectX Version --

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.

Intel UHD Graphics 730 GPU no iGPU
Decode / Encode Codec h265 / HEVC (8 bit) No
Decode / Encode Codec h265 / HEVC (10 bit) No
Decode / Encode Codec h264 No
Decode / Encode Codec VP9 No
Decode / Encode Codec VP8 No
Decode Codec AV1 No
Decode / Encode Codec AVC No
Decode Codec VC-1 No
Decode / Encode Codec JPEG No

Memory & PCIe

The Intel Core i5-11400 can use up to 128 GB of memory in 2 memory channels. The maximum memory bandwidth is 51.2 GB/s. The Intel Core2 Duo E6600 supports up to 16 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 21.3 GB/s.

Intel Core i5-11400 Characteristic Intel Core2 Duo E6600
DDR4-3200 Memory DDR3-1333, DDR2-1066
128 GB Max. Memory 16 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
51.2 GB/s Max. Bandwidth 21.3 GB/s
No ECC No
3.00 MB L2 Cache 4.00 MB
12.00 MB L3 Cache --
4.0 PCIe version --
20 PCIe lanes --
39.4 GB/s PCIe Bandwidth --

Thermal Management

The thermal design power (TDP for short) of the Intel Core i5-11400 is 65 W, while the Intel Core2 Duo E6600 has a TDP of 65 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

Intel Core i5-11400 Characteristic Intel Core2 Duo E6600
65 W TDP (PL1 / PBP) 65 W
154 W @ 56 s TDP (PL2) --
-- TDP up --
-- TDP down --
100 °C Tjunction max. --

Technical details

The Intel Core i5-11400 is manufactured in 14 nm and has 15.00 MB cache. The Intel Core2 Duo E6600 is manufactured in 65 nm and has a 4.00 MB cache.

Intel Core i5-11400 Characteristic Intel Core2 Duo E6600
14 nm Technology 65 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX2, AVX-512 ISA extensions MMX, SSE, SSE2, SSE3
LGA 1200 Socket LGA 775
VT-x, VT-x EPT, VT-d Virtualization VT-x
Yes AES-NI No
Windows 10, Windows 11, Linux Operating systems Windows 10, Linux
Q1/2021 Release date Q3/2006
182 $ Release price --
show more data show more data


Rate these processors

Here you can rate the Intel Core i5-11400 to help other visitors make their purchasing decisions. The average rating is 4.3 stars (9 ratings). Rate now:
Here you can rate the Intel Core2 Duo E6600 to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 4 CPU benchmarks
Intel Core i5-11400 (100%)
Intel Core2 Duo E6600 (24%)
⌀ Multi core performance in 6 CPU benchmarks
Intel Core i5-11400 (100%)
Intel Core2 Duo E6600 (7%)

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i5-11400 Intel Core i5-11400
6C 12T @ 4.40 GHz
1402 (100%)
Intel Core2 Duo E6600 Intel Core2 Duo E6600
2C 2T @ 2.40 GHz
314 (22%)

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i5-11400 Intel Core i5-11400
6C 12T @ 4.20 GHz
10155 (100%)
Intel Core2 Duo E6600 Intel Core2 Duo E6600
2C 2T @ 2.40 GHz
579 (6%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i5-11400 Intel Core i5-11400
6C 12T @ 4.40 GHz
1513 (100%)
Intel Core2 Duo E6600 Intel Core2 Duo E6600
2C 2T @ 2.40 GHz
302 (20%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i5-11400 Intel Core i5-11400
6C 12T @ 4.20 GHz
7270 (100%)
Intel Core2 Duo E6600 Intel Core2 Duo E6600
2C 2T @ 2.40 GHz
513 (7%)

Cinebench R20 (Single-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i5-11400 Intel Core i5-11400
6C 12T @ 4.40 GHz
529 (100%)
Intel Core2 Duo E6600 Intel Core2 Duo E6600
2C 2T @ 2.40 GHz
128 (24%)

Cinebench R20 (Multi-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i5-11400 Intel Core i5-11400
6C 12T @ 4.20 GHz
3888 (100%)
Intel Core2 Duo E6600 Intel Core2 Duo E6600
2C 2T @ 2.40 GHz
241 (6%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
Intel Core i5-11400 Intel Core i5-11400
6C 12T @ 4.20 GHz
17082 (100%)
Intel Core2 Duo E6600 Intel Core2 Duo E6600
2C 2T @ 2.40 GHz
901 (5%)

CPU-Z Benchmark 17 (Multi-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Intel Core i5-11400 Intel Core i5-11400
6C 12T @ 2.60 GHz
4249 (100%)
Intel Core2 Duo E6600 Intel Core2 Duo E6600
2C 2T @ 2.40 GHz
392 (9%)

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core i5-11400 Intel Core i5-11400
6C 12T @ 4.40 GHz
216 (100%)
Intel Core2 Duo E6600 Intel Core2 Duo E6600
2C 2T @ 2.40 GHz
60 (28%)

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core i5-11400 Intel Core i5-11400
6C 12T @ 4.20 GHz
1598 (100%)
Intel Core2 Duo E6600 Intel Core2 Duo E6600
2C 2T @ 2.40 GHz
113 (7%)

Cinebench 2024 (Single-Core)

The Cinebench 2024 benchmark is based on the Redshift rendering engine, which is also used in Maxon's 3D program Cinema 4D. The benchmark runs are each 10 minutes long to test whether the processor is limited by its heat generation.
Intel Core i5-11400 Intel Core i5-11400
6C 12T @ 4.40 GHz
85 (100%)
Intel Core2 Duo E6600 Intel Core2 Duo E6600
2C 2T @ 2.40 GHz
0 (0%)

Cinebench 2024 (Multi-Core)

The Multi-Core test of the Cinebench 2024 benchmark uses all cpu cores to render using the Redshift rendering engine, which is also used in Maxons Cinema 4D. The benchmark run is 10 minutes long to test whether the processor is limited by its heat generation.
Intel Core i5-11400 Intel Core i5-11400
6C 12T @ 4.40 GHz
593 (100%)
Intel Core2 Duo E6600 Intel Core2 Duo E6600
2C 2T @ 2.40 GHz
0 (0%)

Geekbench 6 (Single-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
Intel Core i5-11400 Intel Core i5-11400
6C 12T @ 4.40 GHz
1978 (100%)
Intel Core2 Duo E6600 Intel Core2 Duo E6600
2C 2T @ 2.40 GHz
0 (0%)

Geekbench 6 (Multi-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
Intel Core i5-11400 Intel Core i5-11400
6C 12T @ 4.20 GHz
7895 (100%)
Intel Core2 Duo E6600 Intel Core2 Duo E6600
2C 2T @ 2.40 GHz
0 (0%)

iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
Intel Core i5-11400 Intel Core i5-11400
Intel UHD Graphics 730 @ 1.30 GHz
499 (100%)
Intel Core2 Duo E6600 Intel Core2 Duo E6600
@ 0.00 GHz
0 (0%)

Blender 3.1 Benchmark

In the Blender Benchmark 3.1, the scenes "monster", "junkshop" and "classroom" are rendered and the time required by the system is measured. In our benchmark we test the CPU and not the graphics card. Blender 3.1 was presented as a standalone version in March 2022.
Intel Core i5-11400 Intel Core i5-11400
6C 12T @ 4.20 GHz
135 (100%)
Intel Core2 Duo E6600 Intel Core2 Duo E6600
2C 2T @ 2.40 GHz
0 (0%)

CPU-Z Benchmark 17 (Single-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Intel Core i5-11400 Intel Core i5-11400
6C 12T @ 4.20 GHz
565 (100%)
Intel Core2 Duo E6600 Intel Core2 Duo E6600
2C 2T @ 2.40 GHz
0 (0%)

Devices using this processor

Intel Core i5-11400 Intel Core2 Duo E6600
Unknown Unknown

Popular comparisons containing this CPUs

1. Intel Core i5-11400Intel Core i5-10400 Intel Core i5-11400 vs Intel Core i5-10400
2. AMD Ryzen 5 5600GIntel Core i5-11400 AMD Ryzen 5 5600G vs Intel Core i5-11400
3. Intel Core i5-11400FIntel Core i5-11400 Intel Core i5-11400F vs Intel Core i5-11400
4. Intel Core i5-12400Intel Core i5-11400 Intel Core i5-12400 vs Intel Core i5-11400
5. Intel Core i5-11400AMD Ryzen 5 5600X Intel Core i5-11400 vs AMD Ryzen 5 5600X
6. Intel Core i5-11400AMD Ryzen 5 3600 Intel Core i5-11400 vs AMD Ryzen 5 3600
7. Intel Core i5-11400Intel Core i5-11500 Intel Core i5-11400 vs Intel Core i5-11500
8. Intel Core i5-10400FIntel Core i5-11400 Intel Core i5-10400F vs Intel Core i5-11400
9. Intel Core i5-11400Intel Core i7-11700 Intel Core i5-11400 vs Intel Core i7-11700
10. Intel Core i5-11400AMD Ryzen 5 PRO 4650G Intel Core i5-11400 vs AMD Ryzen 5 PRO 4650G


back to index