Core 2 Duo E8400

Details and Benchmarks for Intel Core 2 Duo E8400

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Please take all results with a big grain of salt. Sysbuilds is in alpha stage at the moment which can lead to wrong data, strange counting errors, silly results and more. This site is under active development.

Benchmark Results

Combined benchmark scores based on multiple data points, giving a quick overview of this processor's performance.

Overall Score

Overall score for Core 2 Duo E8400 based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,129 Rank: 1773
Rank Name Score Visual
1769 A6-4400M 4,133
+0.1%
1770 Core 2 Duo T6670 4,133
+0.1%
1771 Core 2 Duo T7500 4,133
+0.1%
1772 Core i3-2377M 4,129
+0%
1773 Core 2 Duo E8400 4,129
1774 A4-3300M 4,127
+-0%
1775 A8-4500M 4,126
-0.1%
1776 Celeron E3200 4,126
-0.1%
1777 Core 2 Duo E7400 4,125
-0.1%
1778 Core 2 Duo T6500 4,123
-0.1%

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Multicore Score

Multicore performance score for Core 2 Duo E8400 based on multi-threaded benchmark results.

4,188 Rank: 2019
Rank Name Score Visual
2015 Atom Z520 4,195
+0.2%
2016 A4-6300 4,192
+0.1%
2017 Athlon X2 QL-64 4,191
+0.1%
2018 Intel Celeron N3010 4,188
+0%
2019 Core 2 Duo E8400 4,188
2020 Atom 230 4,187
+-0%
2021 Phenom 9850 4,182
-0.1%
2022 Intel Celeron N3000 4,181
-0.2%
2023 Pentium E5200 4,179
-0.2%
2024 Athlon X2 QL-60 4,179
-0.2%

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Singlecore Score

Single-core performance score for Core 2 Duo E8400 based on single-threaded benchmark results.

4,089 Rank: 1687
Rank Name Score Visual
1683 Pentium B950 4,092
+0.1%
1684 Phenom II X4 820 4,092
+0.1%
1685 Phenom II X4 910e 4,090
+0%
1686 Core i5-430M 4,090
+0%
1687 Core 2 Duo E8400 4,089
1688 Phenom II P960 4,086
-0.1%
1689 Phenom II P940 4,086
-0.1%
1690 Phenom II X3 B73 4,085
-0.1%
1691 A8-7200P 4,084
-0.1%
1692 Athlon X4 730 4,084
-0.1%

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Workload Scores

Performance scores grouped by workload type, normalized and aggregated from multiple raw benchmark results.

Number Crunching

Aggregated score for Core 2 Duo E8400 based on integer math, floating point math, and prime number computation benchmarks.

-- Rank: --

Number Crunching score not yet available.

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Data Processing

Aggregated score for Core 2 Duo E8400 based on data encryption, data compression, and string sorting benchmarks.

-- Rank: --

Data Processing score not yet available.

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Physics & Compute

Aggregated score for Core 2 Duo E8400 based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

-- Rank: --

Physics & Compute score not yet available.

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Core 2 Duo E8400 Details

Built on Intel's Wolfdale microarchitecture at a 45 nm process, the Core 2 Duo E8400 represents a significant step in the evolution of desktop processors from the late 2000s. Launched in January 2008, this CPU is now over 15 years old, placing it firmly in the category of legacy hardware. Despite its age, it remains notable for its time as a high-performance dual-core processor with a 3.0 GHz base clock and a 65 W TDP, making it a reliable choice for mainstream computing during its era. Its design reflects Intel's commitment to power efficiency and performance in the desktop market, supported by a Socket LGA775 platform that was widely adopted across motherboards of the time.

The Core 2 Duo E8400 features two physical cores with a total of 6 MB of L2 cache, which was substantial for its time and contributed to strong single-threaded performance. While it lacks a locked clock multiplier, allowing some overclocking headroom, its 1333 MHz front-side bus and support for dual-channel DDR3 memory enabled efficient data throughput. The processor supports up to 16 GB of DDR3L and LPDDR3 memory, with a maximum memory bandwidth of 25.6 GB/s, ensuring compatibility with the memory standards of its generation. Its integrated graphics capabilities are limited, with certain motherboards offering HD Graphics 4200 as a chipset feature, though this was not a standard inclusion.

In terms of performance, the Core 2 Duo E8400 achieves an Overall Score of 4129, ranking #1772 out of 2060 processors in the benchmark database. Its Singlecore Score stands at 4089, placing it #1687, while its Multicore Score of 4188 ranks it #2018. These results reflect its strengths in single-threaded applications, where it outperforms many contemporary processors, but also highlight its limitations in multi-threaded workloads compared to modern multi-core designs. It competes with CPUs like the A4-6300 and Core 2 Duo T7300, but trails behind more recent models in both single and multicore performance.

The processor supports a wide range of Intel technologies, including MMX, SSE, SSE2, SSE3, SSE4.1, SSE4.2, AVX2, AES, and x86-64, ensuring compatibility with software from its era and beyond. It also supports virtualization with VT-x and VT-d, as well as features like EIST for power management and TXT for security. While it lacks simultaneous multithreading, its dual-core design with a high clock speed allowed it to handle everyday tasks, light multimedia editing, and even some gaming applications when paired with a discrete GPU.

As of March 2026, the Core 2 Duo E8400 is best suited for legacy systems, retro computing setups, or educational purposes where understanding historical hardware architecture is valuable. While it no longer competes with modern processors, its design and performance remain a testament to Intel's engineering from the late 2000s. For users seeking a reliable, power-efficient dual-core processor from that era, the E8400 still holds relevance, particularly in environments where newer hardware is not feasible.
Frequently Compared

AMD Ryzen 7 PRO 2700 45 views

AMD A4-6300 40 views

AMD Ryzen 5 3500X 39 views

Intel Core 2 Duo E8600 37 views

Intel Atom Z520 36 views

Intel Celeron G530 34 views

Intel Xeon W3503 34 views

AMD Ryzen Threadripper 1900X 33 views

Intel Xeon W3505 31 views

Intel Core i3-4030U 31 views

Intel Core 2 Duo E8400

Main Specifications

Designer: Intel
Name: Core 2 Duo E8400
Model Number: E8400
Cores: 2
Threads: 4
Base Frequency: 3000 MHz
Clock Multiplier: 9x (locked)
Core Name: Wolfdale
Socket: LGA775
Package: FC-LGA6
Target Segment: Desktop
Max CPUs: 1
TDP: 65 W

Cache Specifications

L1 Cache: 62.464 KiB
L2 Cache: 5.722 MiB

Memory Specifications

Supported Memory Type: DDR3L 1333/1600, LPDDR3 1333/1600
Memory Channels: 2
Maximum Memory: 0 GB
Maximum Bandwidth: 25.6 GB/s
ECC Support: No

PCI-Express Specifications

PCIe Revision: 2.0
PCIe Lanes: 12
PCIe Configuration: 4x1, 2x4

Integrated Graphics

GPU: HD graphics 4200
GPU Designer: Intel
GPU Max Frequency: 850 MHz

Physical Specifications

Process: 45 nm
Die Area: 104 mm²
Transistor Count: 0.00 billion
Manufacturer: Intel
Word Size: 64-bit

CPU Features

MMX SSE SSE2 SSE3 SSE4.1 SSE4.2 AVX2 AES x86-64 HT EIST TXT vPro VT-x VT-d EPT Secure Key SMEP SIPP IPT TSX Flex Memory FMA
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