Phenom X4 9550

Details and Benchmarks for AMD Phenom X4 9550

Sysbuilds Alpha Stage!

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 Phenom X4 9550 based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,004 Rank: 1884
Rank Name Score Visual
1880 Celeron J3355 4,011
+0.2%
1881 Celeron E1500 4,010
+0.1%
1882 Athlon II M320 4,007
+0.1%
1883 Phenom X3 8750 4,007
+0.1%
1884 Phenom X4 9550 4,004
1885 Celeron 2955U 4,002
+-0%
1886 Phenom X4 9750 4,002
+-0%
1887 A4-4300M 4,000
-0.1%
1888 Intel Core i3-380UM 3,999
-0.1%
1889 Pentium N3710 3,999
-0.1%

View full ranking →


Multicore Score

Multicore performance score for Phenom X4 9550 based on multi-threaded benchmark results.

4,326 Rank: 1673
Rank Name Score Visual
1669 Core i5-3230M 4,326
+0%
1670 Pentium E6600 4,326
+0%
1671 A8-7410 4,326
+0%
1672 Atom Z3740 4,326
+0%
1673 Phenom X4 9550 4,326
1674 Athlon II X3 435 4,325
+-0%
1675 Core 2 Duo E7600 4,325
+-0%
1676 Athlon II X2 255 4,324
+-0%
1677 A8-4500M 4,324
+-0%
1678 Celeron N3160 4,324
+-0%

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Singlecore Score

Single-core performance score for Phenom X4 9550 based on single-threaded benchmark results.

3,790 Rank: 1898
Rank Name Score Visual
1894 Athlon 64 X2 4200+ 3,793
+0.1%
1895 C-50 3,792
+0.1%
1896 Pentium 967 3,790
+0%
1897 Celeron 877 3,790
+0%
1898 Phenom X4 9550 3,790
1899 Athlon 64 3200+ 3,789
+-0%
1900 Phenom X4 9750 3,786
-0.1%
1901 Athlon II X4 600e 3,784
-0.2%
1902 Phenom X3 8650 3,781
-0.2%
1903 Pentium N3710 3,777
-0.3%

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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 Phenom X4 9550 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 Phenom X4 9550 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 Phenom X4 9550 based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

-- Rank: --

Physics & Compute score not yet available.

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Phenom X4 9550 Details

With a multicore score of 4326 and an overall score of 4004, the AMD Phenom X4 9550 represents a mid-tier performer from the late 2000s, positioned near the bottom of modern CPU rankings. Launched in March 2008, this four-core processor is now over 15 years old, placing it firmly in the realm of legacy hardware. Despite its age, it was designed for mainstream desktop users who needed more processing power than dual-core offerings, leveraging AMD's Agena architecture built on a 65 nm process. With a base clock of 2.2 GHz and a TDP of 95 W, the Phenom X4 9550 demands substantial cooling and is not suited for low-power or portable systems.

It operates on the Socket AM2+ platform, supporting dual-channel DDR2 memory, and features a total of 2.52 MiB of cache—0.122 MiB in L1, 0.488 MiB in L2, and 1.907 MiB in L3. While it lacks integrated graphics, certain motherboards with compatible chipsets can provide basic display output. The processor supports key technologies such as AMD-V for virtualization and a range of instruction sets including SSE, SSE2, SSE3, SSE4a, and 3DNow! However, it does not support simultaneous multithreading or ECC memory.

In comparison to its contemporaries, the Phenom X4 9550 is slightly faster than the Phenom X4 9750 in multicore performance but trails behind in single-core benchmarks. Its performance is now eclipsed by virtually every modern CPU, with even low-end processors from the 2020s surpassing it. As of March 2026, the Phenom X4 9550 is best suited for retro computing, legacy system maintenance, or educational purposes rather than contemporary applications.
Frequently Compared

AMD Ryzen 5 3500X 4 views


AMD EPYC 7352 4 views


AMD A9-9425 3 views


AMD Ryzen 5 3600 3 views


Intel Core 2 Duo E8600 3 views


AMD A10-5757M 3 views


AMD Ryzen 9 PRO 3900 2 views


AMD A4-6300 2 views


AMD Phenom 9750 2 views


AMD Athlon II X2 270 2 views


AMD Phenom X4 9550

Main Specifications

Designer: AMD
Name: Phenom X4 9550
Cores: 4
Threads: 4
Base Frequency: 2200 MHz
Clock Multiplier: 11x (locked)
Core Name: Agena
Socket: Socket AM2+
Package: µPGA
Target Segment: Desktop
TDP: 95 W

Cache Specifications

L1 Cache: 124.928 KiB
L2 Cache: 0.488 MiB
L3 Cache: 1.907 MiB

Memory Specifications


Physical Specifications

Process: 65 nm
Die Area: 285 mm²
Transistor Count: 0.00 billion

CPU Features

MMX SSE SSE2 SSE3 SSE4a AMD-V 3DNow!

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