AMD

AMD Athlon II X3 400e

AMD processor specifications and benchmark scores

3
Cores
3
Threads
โ€”
GHz Boost
45W
TDP
๐Ÿ–ฅ๏ธIntegrated GPU

AMD Athlon II X3 400e Specifications

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Athlon II X3 400e Core Configuration

Processing cores and threading

The AMD Athlon II X3 400e features 3 physical cores and 3 threads, which directly impacts multi-threaded performance in CPU benchmarks. More cores allow the processor to handle parallel workloads efficiently, improving performance in video editing, 3D rendering, and multitasking scenarios. Thread count determines how many simultaneous tasks the CPU can process, with higher thread counts benefiting productivity applications and content creation workflows.

Cores
3
Threads
3
SMP CPUs
1
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Athlon II X3 400e Clock Speeds

Base and boost frequencies

Clock speed is a critical factor in Athlon II X3 400e benchmark performance, measured in GHz. The base clock represents the guaranteed operating frequency, while the boost clock indicates maximum single-core performance under optimal conditions. Higher clock speeds translate to faster single-threaded performance, which is essential for gaming and applications that don't fully utilize multiple cores. The Athlon II X3 400e by AMD can dynamically adjust its frequency based on workload and thermal headroom.

Base Clock
2.2 GHz
Boost Clock
N/A
Multiplier
11x
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AMD's Athlon II X3 400e Cache Hierarchy

L1, L2, L3 cache sizes

Cache memory is ultra-fast storage built directly into the Athlon II X3 400e processor die. L1 cache provides the fastest access for frequently used data, while L2 and L3 caches offer progressively larger storage with slightly higher latency. Larger cache sizes significantly improve CPU benchmark scores by reducing memory access times. The Athlon II X3 400e's cache configuration is optimized for both gaming performance and productivity workloads, minimizing data fetch delays during intensive computations.

L1 Cache
128 KB (per core)
L2 Cache
512 KB (per core)
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K10 Architecture & Process

Manufacturing and design details

The AMD Athlon II X3 400e is built on AMD's 45 nm manufacturing process, which determines power efficiency and thermal characteristics. Smaller process nodes allow for more transistors in the same space, enabling higher performance per watt. The architecture defines how the processor handles instructions and manages data flow, directly impacting benchmark results across different workload types. Modern CPU architectures like the one in Athlon II X3 400e incorporate advanced branch prediction and out-of-order execution for optimal performance.

Architecture
K10
Codename
Rana
Process Node
45 nm
Transistors
300 million
Die Size
169 mmยฒ
Generation
Athlon II X3 (Rana)
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K10 Instruction Set Features

Supported CPU instructions and extensions

The Athlon II X3 400e by AMD supports various instruction set extensions that enable optimized performance for specific workloads. SIMD instructions like SSE and AVX accelerate multimedia, scientific computing, and AI workloads by processing multiple data points simultaneously. Features like AES-NI provide hardware-accelerated encryption, while AVX-512 (if supported) enables advanced vector processing for data centers and high-performance computing. These instruction sets are critical for software compatibility and performance in modern applications.

MMX
SSE
SSE2
SSE3
SSE4A
AMD64
AMD-V
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Athlon II X3 400e Power & Thermal

TDP and power specifications

The AMD Athlon II X3 400e has a TDP (Thermal Design Power) of 45W, indicating the cooling solution required for sustained operation. TDP affects both system power consumption and the type of cooler needed. Lower TDP processors are ideal for compact builds and laptops, while higher TDP chips typically offer better sustained performance in demanding CPU benchmarks. Understanding power requirements helps ensure your system can deliver consistent performance without thermal throttling.

TDP
45W
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AMD Socket AM3 Platform & Socket

Compatibility information

The Athlon II X3 400e uses the AMD Socket AM3 socket, which determines motherboard compatibility. Choosing the right platform is essential for building a system around this processor. The socket type also influences available features like PCIe lanes, memory support, and upgrade paths. When comparing CPU benchmarks, ensure you're looking at processors compatible with your existing or planned motherboard to make informed purchasing decisions.

Socket
AMD Socket AM3
PCIe
Gen 2
Package
ยตPGA
DDR5

AMD Socket AM3 Memory Support

RAM compatibility and speeds

Memory support specifications for the Athlon II X3 400e define which RAM types and speeds are compatible. Faster memory can significantly improve CPU benchmark performance, especially in memory-intensive applications and gaming. The memory controller integrated into the Athlon II X3 400e determines maximum supported speeds and channels. Dual-channel or quad-channel memory configurations can double or quadruple memory bandwidth, providing noticeable performance gains in content creation and scientific workloads.

Memory Type
DDR3
Memory Bus
Dual-channel
๐Ÿ–ฅ๏ธ

AMD's Athlon II X3 400e Integrated Graphics

Built-in GPU specifications

The AMD Athlon II X3 400e includes integrated graphics, eliminating the need for a dedicated GPU in basic computing scenarios. Integrated graphics are ideal for office productivity, video playback, and light gaming. While not designed for demanding GPU benchmarks, the iGPU in the Athlon II X3 400e provides hardware video encoding and decoding capabilities. This makes the processor suitable for compact builds, HTPCs, and systems where power efficiency is prioritized over gaming performance.

iGPU
On certain motherboards (Chipset feature)
Graphics Model
On certain motherboards (Chipset feature)
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Athlon II X3 400e Product Information

Release and pricing details

The AMD Athlon II X3 400e is manufactured by AMD and represents their commitment to delivering competitive CPU performance. Understanding the release date and pricing helps contextualize benchmark comparisons with other processors from the same generation. Launch pricing provides a baseline for evaluating value, though street prices often differ. Whether you're building a new system or upgrading, the Athlon II X3 400e by AMD offers a specific balance of performance, features, and cost within AMD's product lineup.

Manufacturer
AMD
Release Date
Oct 2009
Market
Desktop
Status
End-of-life
Part Number
AD400EHDK32GIAD405EHDGIBOX

Athlon II X3 400e Benchmark Scores

cinebench_cinebench_r15_multicoreSource

Cinebench R15 multi-core renders a complex 3D scene using all CPU threads simultaneously. This test reveals how AMD Athlon II X3 400e performs in parallel rendering workloads.

cinebench_cinebench_r15_multicore #1713 of 1788
113
1%
Max: 14,978
Compare with other CPUs

cinebench_cinebench_r20_multicoreSource

Cinebench R20 multi-core uses a scene requiring 4x more computational power than R15. This test better reflects modern CPU capabilities for professional rendering on AMD Athlon II X3 400e. The more demanding workload provides better differentiation between current-generation processors. Content creators and 3D artists use this benchmark to estimate real-world render performance.

cinebench_cinebench_r20_multicore #1715 of 1788
471
1%
Max: 62,412
Compare with other CPUs

cinebench_cinebench_r20_singlecoreSource

Cinebench R20 single-core tests one thread against a more demanding scene than R15. This reveals the true single-thread rendering capability of AMD Athlon II X3 400e. The increased complexity provides more accurate performance differentiation between modern CPUs. Single-thread performance remains critical for gaming and applications with serial bottlenecks.

cinebench_cinebench_r20_singlecore #1715 of 1784
66
1%
Max: 8,811

cinebench_cinebench_r23_multicoreSource

Cinebench R23 multi-core is the current standard for CPU rendering benchmarks with a 10-minute minimum runtime. This extended test reveals sustained performance of AMD Athlon II X3 400e after thermal limits kick in. The longer duration exposes cooling limitations that shorter benchmarks miss. Professional users rely on R23 scores to predict real-world rendering performance under sustained workloads.

cinebench_cinebench_r23_multicore #1715 of 1788
1,122
1%
Max: 148,601
Compare with other CPUs

๐Ÿ† Top 5 Performers

cinebench_cinebench_r23_singlecoreSource

Cinebench R23 single-core measures sustained single-thread performance over 10 minutes. This reveals how AMD Athlon II X3 400e maintains boost clocks under continuous load. The extended runtime shows whether thermal throttling affects single-core performance. This score is particularly important for understanding real-world responsiveness beyond initial boost behavior.

cinebench_cinebench_r23_singlecore #1715 of 1788
158
1%
Max: 20,979
Compare with other CPUs

About AMD Athlon II X3 400e

The AMD Athlon II X3 400e stands as a noteworthy entry in AMD's Athlon II X3 generation, built on the Rana architecture using a 45 nm process for efficient performance in its era. Released on October 20, 2009, this tri-core processor operates at a base clock of 2.20 GHz with 3 threads, fitting snugly into the AMD Socket AM3 platform and drawing just 45W TDP, which made it ideal for energy-conscious builds. Investigators into vintage hardware will appreciate how the AMD Athlon II X3 400e targeted the budget desktop market segment, offering a balance of multi-core capabilities for everyday tasks like web browsing, office work, and light multimedia without breaking the bank. Its architecture emphasized affordability over high-end gaming or professional workloads, positioning it as a solid choice for entry-level systems during the late 2000s. When evaluating performance metrics, the AMD Athlon II X3 400e scores 1,122 points in Cinebench R23 multicore, 471 in R20 multicore, 158 in R23 singlecore, 113 in R15 multicore, and 66 in R20 singlecore, reflecting modest but reliable output for its time. For those considering upgrades, the AMD Athlon II X3 400e invites scrutiny into compatibility with AM3 motherboards, which could support later Phenom II or even some FX-series CPUs for a noticeable boost in speed and efficiency. Market segment analysis reveals it was geared toward cost-sensitive consumers and small office setups, where its low power draw reduced cooling needs and electricity costs. Delving deeper, upgrade paths might involve swapping to a quad-core successor on the same socket to handle modern light multitasking, though its 45 nm process lags behind today's standards, prompting a full platform refresh for intensive use. Researchers should note that while the AMD Athlon II X3 400e remains viable for retro computing or low-demand servers, pairing it with ample RAM and SSD storage can extend its relevance.
  1. Examine socket compatibility to ensure seamless integration with existing AM3 boards.
  2. Assess TDP limits for cooling solutions that match its 45W profile.
  3. Compare benchmark scores against contemporaries like Intel's Core 2 Quad for relative value.
  4. Investigate overclocking potential, though limited by its unlocked multiplier status.
  5. Evaluate longevity by testing with current OS like Windows 10 for basic functionality.

The Intel Equivalent of Athlon II X3 400e

Looking for a similar processor from Intel? The Intel Core i5-750 offers comparable performance and features in the Intel lineup.

Intel Core i5-750

Intel โ€ข 4 Cores

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