Athlon II M300

Details and Benchmarks for AMD Athlon II M300

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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 Athlon II M300 based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,030 Rank: 1861
Rank Name Score Visual
1857 Celeron J3455 4,033
+0.1%
1858 A6-7000 4,032
+0%
1859 A4-3305M 4,031
+0%
1860 Celeron B820 4,030
+0%
1861 Athlon II M300 4,030
1862 Sempron 140 4,030
+0%
1863 Phenom X4 9600B 4,026
-0.1%
1864 Pentium N3540 4,025
-0.1%
1865 V140 4,024
-0.1%
1866 Athlon II X4 600e 4,022
-0.2%

View full ranking →

Multicore Score

Multicore performance score for Athlon II M300 based on multi-threaded benchmark results.

4,278 Rank: 1828
Rank Name Score Visual
1824 Athlon 64 4000+ 4,279
+0%
1825 A4-3310MX 4,279
+0%
1826 A8-4555M 4,278
+0%
1827 A4-3300M 4,278
+0%
1828 Athlon II M300 4,278
1829 A6-5350M 4,278
+0%
1830 A6-1450 4,278
+0%
1831 Core i5 650 4,277
+-0%
1832 Celeron N2808 4,276
+-0%
1833 Athlon X2 BE-2400 4,276
+-0%

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Singlecore Score

Single-core performance score for Athlon II M300 based on single-threaded benchmark results.

3,864 Rank: 1855
Rank Name Score Visual
1851 Celeron 450 3,870
+0.2%
1852 A4-7210 3,869
+0.1%
1853 Athlon 64 X2 4600+ 3,865
+0%
1854 E1-6010 3,865
+0%
1855 Athlon II M300 3,864
1856 A6-7000 3,863
+-0%
1857 E1-1500 3,861
-0.1%
1858 Intel Core i5-430M 3,854
-0.3%
1859 Celeron 2980U 3,854
-0.3%
1860 Pentium J4205 3,849
-0.4%

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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 Athlon II M300 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 Athlon II M300 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 Athlon II M300 based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

-- Rank: --

Physics & Compute score not yet available.

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Athlon II M300 Details

As of March 2026, the Athlon II M300 occupies a niche position in the broader CPU landscape, representing an older generation of desktop processors from AMD. While it's no longer competitive with modern high-performance chips, it still serves as a relevant example of mid-tier computing from the late 2000s and early 2010s. Designed for mainstream desktop use, the M300 is built on a 65 nm process and uses the PLGA775 socket, reflecting the era when integrated graphics were becoming standard but discrete GPUs were still dominant for performance workloads.

The processor features two cores and two threads, operating at a base frequency of 2.33 GHz with a turbo frequency of 1.86 GHz, which is modest by today’s standards. It supports DDR3 1066/1333 memory, with a maximum capacity of 16 GB and a memory bandwidth of 21.3 GB/s across two channels. The 65 W TDP makes it energy-efficient for its time, though it lacks modern power management features found in current designs. It also supports a range of advanced technologies, including SSE4.1, SSE4.2, AVX2, AES encryption, and virtualization extensions like VT-x and VT-d, indicating a design that balanced performance and versatility.

In terms of integrated graphics, the Athlon II M300 includes Intel HD Graphics with a base frequency of 350 MHz and a burst frequency of up to 1000 MHz. It supports up to two displays and can handle basic multimedia tasks, though it is not suitable for gaming or graphics-intensive applications. The integrated GPU is a legacy feature, as modern processors have moved toward more capable graphics solutions or rely on discrete components.

Benchmarking reveals that the Athlon II M300 has an overall score of 4030, placing it at #1860 out of 2060 processors in the dataset. Its single-core score of 3864 ranks #1855, while its multicore score of 4278 places it at #1826. These results position it behind more recent dual- and quad-core processors like the Core i5-430M and the Celeron N2808, yet it remains ahead of older dual-core chips such as the Athlon X2 BE-2400 and the Athlon II P360. The processor’s strongest performance lies in its multicore capability, though its single-core strength is limited, reflecting the constraints of its microarchitecture and process node.

Given its age and performance profile, the Athlon II M300 is best suited for basic office computing, light multimedia use, and legacy systems where cost and compatibility are priorities. It is not ideal for modern workloads such as video editing, gaming, or software development. For users seeking a low-cost upgrade path in older systems, the M300 provides a functional, if outdated, solution. In today’s market, it stands as a testament to the evolution of CPU design, where efficiency, performance, and integrated capabilities have dramatically improved over the past decade.
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AMD Athlon II M300

Main Specifications

Designer: AMD
Name: Athlon II M300
Model Number: E6550
Cores: 2
Threads: 2
Base Frequency: 2330 MHz
Socket: PLGA775
Max CPUs: 1
TDP: 65 W

Cache Specifications

Memory Specifications

Supported Memory Type: DDR3 1066/1333
Memory Channels: 2
Maximum Memory: 0 GB
Maximum Bandwidth: 21.3 GB/s
ECC Support: No

PCI-Express Specifications

PCIe Revision: 2.0
PCIe Lanes: 1
PCIe Configuration: 1x16, 2x8, 1x8 2x4

Integrated Graphics

GPU: HD Graphics
GPU Designer: Intel
GPU Max Frequency: 1000 MHz

Physical Specifications

Process: 65 nm
Word Size: 64-bit

CPU Features

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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