Core 2 Duo P8400

Details and Benchmarks for Intel Core 2 Duo P8400

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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 P8400 based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,109 Rank: 1792
Rank Name Score Visual
1788 Phenom II X4 900e 4,113
+0.1%
1789 Celeron B830 4,111
+0%
1790 Core 2 Duo P7550 4,111
+0%
1791 A6-3620 4,109
+0%
1792 Core 2 Duo P8400 4,109
1793 Pentium J4205 4,107
+-0%
1794 A4-3310MX 4,107
+-0%
1795 Intel Core i3-330M 4,104
-0.1%
1796 Pentium T4200 4,104
-0.1%
1797 A6-3430MX 4,104
-0.1%

View full ranking →

Multicore Score

Multicore performance score for Core 2 Duo P8400 based on multi-threaded benchmark results.

4,155 Rank: 2032
Rank Name Score Visual
2028 Core 2 Duo U9600 4,168
+0.3%
2029 Xeon E3110 4,166
+0.3%
2030 Core 2 Quad Q9400 4,164
+0.2%
2031 Core i5-4300Y 4,161
+0.1%
2032 Core 2 Duo P8400 4,155
2033 Core 2 Quad Q8400 4,150
-0.1%
2034 Athlon II X2 250 4,149
-0.1%
2035 A4-6320 4,143
-0.3%
2036 Core i3-3217U 4,143
-0.3%
2037 Phenom 9750 4,141
-0.3%

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Singlecore Score

Single-core performance score for Core 2 Duo P8400 based on single-threaded benchmark results.

4,078 Rank: 1698
Rank Name Score Visual
1694 Pentium B940 4,081
+0.1%
1695 Pentium E5200 4,081
+0.1%
1696 Xeon E5606 4,081
+0.1%
1697 Core M-5Y10a 4,079
+0%
1698 Core 2 Duo P8400 4,078
1699 Celeron N4100 4,076
+-0%
1700 Core i5-2415M 4,075
-0.1%
1701 Phenom II X4 810 4,074
-0.1%
1702 Core 2 Duo T8100 4,074
-0.1%
1703 Core 2 Duo E6550 4,073
-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 P8400 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 P8400 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 P8400 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 P8400 Details

As of March 2026, the Intel Core 2 Duo P8400 remains a relic of the late 2000s, representing a significant era in mobile computing. Launched in June 2008, this processor was part of Intel's Penryn architecture, built on a 45 nm process and featuring a 2.26 GHz base clock with a turbo frequency of 2.3 GHz. Despite its age, the P8400 still holds a place in historical rankings, offering a glimpse into the evolution of mobile performance.

The Core 2 Duo P8400 is a dual-core processor with a 25 W TDP, designed for mobile devices and equipped with a BGA479 or PGA478 socket. It features 3 MB of L2 cache and supports DDR3L 1333 memory in a dual-channel configuration, delivering a maximum memory bandwidth of 25.6 GB/s. The integrated Intel HD Graphics provide basic graphics capabilities, with a base frequency of 688 MHz and a burst frequency of up to 854 MHz, supporting up to two displays. However, this GPU is not intended for modern gaming or intensive graphical tasks.

In terms of performance, the P8400 scores 4109 overall, placing it at #1791 out of 2060 processors in the benchmark database. Its single-core score of 4078 ranks it #1698, while its multicore score of 4155 places it #2032. These results indicate that the processor is outperformed by nearly all modern CPUs, even budget and mid-tier models from the past decade. It falls behind processors like the Core i3-3217U and A4-6320, and even older models such as the Core 2 Quad Q8400 and Athlon II X2 250.

Despite its limitations, the P8400 was notable for its efficiency, with a 25 W TDP and a locked multiplier that limited overclocking potential. It supports a range of Intel technologies, including SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX2, AES, and x86-64, ensuring compatibility with a wide range of software. The processor also includes features like Hyper-Threading, Enhanced SpeedStep Technology, and virtualization support, making it suitable for basic productivity and multimedia tasks of its time.

In today’s context, the Core 2 Duo P8400 is best suited for legacy systems, retro computing enthusiasts, or as a replacement in older laptops where performance is not a priority. Its low power consumption and compatibility with DDR3 memory make it a viable option for minimal use cases, but it cannot compete with modern processors in terms of speed, efficiency, or feature set.
Frequently Compared

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Intel Celeron G530 2 views

Intel Core 2 Duo P8400

Main Specifications

Designer: Intel
Name: Core 2 Duo P8400
Model Number: P8400
Cores: 2
Threads: 4
Base Frequency: 2260 MHz
Clock Multiplier: 8.5xx (locked)
Core Name: Penryn
Socket: BGA479, PGA478
Package: µFC-PGA8
Target Segment: Mobile
Max CPUs: 1
TDP: 25 W

Cache Specifications

L1 Cache: 62.464 KiB
L2 Cache: 2.861 MiB

Memory Specifications

Supported Memory Type: DDR3L 1333
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: 4
PCIe Configuration: X4, X2, X1

Integrated Graphics

GPU: HD Graphics
GPU Designer: Intel
GPU Max Frequency: 854 MHz

Physical Specifications

Process: 45 nm
Die Area: 81 mm²
Transistor Count: 0.00 billion
Manufacturer: Intel
Word Size: 64-bit

CPU Features

MMX SSE SSE2 SSE3 SSSE3 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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