AMD Phenom II X4 905e
AMD processor specifications and benchmark scores
Integrated GPU
ECC MemoryAt a Glance
AMDAMD Phenom II X4 905e Specifications
Phenom II X4 905e Core Configuration
Processing cores and threading
The AMD Phenom II X4 905e features 4 physical cores and 4 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.
Phenom II X4 905e Clock Speeds
Base and boost frequencies
Clock speed is a critical factor in Phenom II X4 905e 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 Phenom II X4 905e by AMD can dynamically adjust its frequency based on workload and thermal headroom.
AMD's Phenom II X4 905e Cache Hierarchy
L1, L2, L3 cache sizes
Cache memory is ultra-fast storage built directly into the Phenom II X4 905e 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 Phenom II X4 905e's cache configuration is optimized for both gaming performance and productivity workloads, minimizing data fetch delays during intensive computations.
K10 Architecture & Process
Manufacturing and design details
The AMD Phenom II X4 905e 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 Phenom II X4 905e incorporate advanced branch prediction and out-of-order execution for optimal performance.
K10 Instruction Set Features
Supported CPU instructions and extensions
The Phenom II X4 905e 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.
Phenom II X4 905e Power & Thermal
TDP and power specifications
The AMD Phenom II X4 905e has a TDP (Thermal Design Power) of 65W, 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.
AMD Socket AM3 Platform & Socket
Compatibility information
The Phenom II X4 905e 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.
AMD Socket AM3 Memory Support
RAM compatibility and speeds
Memory support specifications for the Phenom II X4 905e 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 Phenom II X4 905e 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.
AMD's Phenom II X4 905e Integrated Graphics
Built-in GPU specifications
The AMD Phenom II X4 905e 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 Phenom II X4 905e 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.
Phenom II X4 905e Product Information
Release and pricing details
The AMD Phenom II X4 905e 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 Phenom II X4 905e by AMD offers a specific balance of performance, features, and cost within AMD's product lineup.
Phenom II X4 905e 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 Phenom II X4 905e performs in parallel rendering workloads.
Top 5 Performers
Top 5 PerformersNearby Performers
Nearby Performerscinebench_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 Phenom II X4 905e. 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.
Top 5 Performers
Nearby Performers
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 Phenom II X4 905e. The increased complexity provides more accurate performance differentiation between modern CPUs. Single-thread performance remains critical for gaming and applications with serial bottlenecks.
Top 5 Performers
Nearby Performers
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 Phenom II X4 905e 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.
Top 5 Performers
Nearby Performers
cinebench_cinebench_r23_singlecoreSource
Cinebench R23 single-core measures sustained single-thread performance over 10 minutes. This reveals how AMD Phenom II X4 905e 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.
Top 5 Performers
Nearby Performers
About AMD Phenom II X4 905e
The AMD Phenom II X4 905e is a 4-core, 4-thread desktop processor built on the K10 architecture (codename Deneb) using a 45 nm process from GlobalFoundries. It carries a 65 W TDP and was released in June 2009, now end-of-life, with no unlocked multiplier. Benchmark results place it at the 13th percentile among all CPUs, with an average benchmark score of 589, indicating it belongs firmly in the entry-level segment of modern workloads.
Who Should Consider It
This processor is best suited for legacy system builders or users upgrading an old AM3 platform who need basic multi-tasking and light productivity. The data shows a Cinebench R23 multi-core score of 1711 and a single-core score of 241, which places it far below modern entry-level chips; it is not suitable for demanding gaming or content creation. For office work such as word processing, spreadsheets, and web browsing with a few tabs open, the 4 cores and 6 MB shared L3 cache provide adequate responsiveness for older software. Light photo editing or retro emulation might be feasible, but the 13th percentile ranking signals that any modern application with multi-threaded demands will struggle. Gamers should avoid this chip for current titles; even older games that rely on strong single-thread performance will be limited by the single-core score of 241 in Cinebench R23. The processor is better viewed as a stopgap for keeping an old machine alive rather than a primary daily driver. Users who need to run Windows 7-era software or legacy industrial applications may find it acceptable, but there are no scenarios where this CPU excels in today’s environment.
Power and Thermals
The 65 W TDP is the standout feature of this chip, making it a low-power option for its era. This TDP class implies that a stock air cooler with a small fan is sufficient; no high-end cooling solution is required. The 45 nm process node and 758 million transistors on a 258 mm² die contribute to the modest thermal output. For builders, this means the 905e can fit into compact cases with limited airflow, as long as the motherboard supports the AM3 socket. The lack of an unlocked multiplier means no easy overclocking headroom, which further reduces cooling demands. In practice, the thermal profile is manageable, but the performance ceiling is so low that power efficiency does little to offset the computing limitations. The data does not include any thermal throttling or sustained-load measurements, so only the TDP class can guide expectations. A passive cooler might work in a very well-ventilated chassis, but a small active fan is the safe recommendation. Compared to higher-TDP quad-cores of the same generation, this chip will run cooler, but that advantage is irrelevant given its benchmark scores.
Single-Thread vs Multi-Thread Behavior
The split between single-core and multi-core performance is stark. In Cinebench R20, the multi-core score is 718 while the single-core score is 101; in Cinebench R23, the multi-core score is 1711 and single-core is 241. The ratio of multi-core to single-core is roughly 7.1x in R23, which is typical for a 4-core/4-thread part without SMT. This means that applications that can use all four cores see a significant benefit, but any workload that relies on one or two threads will be severely bottlenecked. For example, older games that used a single primary thread will run poorly, while video encoding or batch file processing that scales across cores will perform relatively better. However, the absolute multi-core scores are still low; 1711 in Cinebench R23 is comparable to a modern dual-core with hyper-threading, but that comparison is not available in the data. The practical takeaway is that the 905e is a multi-threaded part by design, but the per-core performance is so weak that even multi-threaded tasks are slow by modern standards. Users should prioritize single-threaded legacy applications that are not demanding, or accept that multi-threaded tasks will take multiple times longer than on any recent CPU.
Platform and Compatibility
The processor uses the AMD Socket AM3 and supports DDR3 memory in a dual-channel configuration, with a memory bandwidth of 21.3 GB/s. ECC memory is supported, which is unusual for a desktop part and could appeal to users running a small home server or NAS with error-checking needs. PCIe support is Gen 2, which limits modern graphics cards to older bandwidth standards, but for this CPU’s performance class, that is not a bottleneck. The integrated graphics are listed as "On certain motherboards (Chipset feature)", meaning the CPU itself does not contain an iGPU; the motherboard chipset must provide display output. This is an important distinction for builders who expected a complete solution. The upgrade path is limited to other AM3 processors, but since this chip is already end-of-life, any upgrade would require a motherboard and RAM swap. The 6 MB shared L3 cache and 512 KB L2 per core are fixed, so there is no room for cache improvements. The lack of a boost clock (base clock is 2.50 GHz) means the CPU runs at a constant frequency under load. For a new build, this platform is obsolete; for a repair or salvage project, the AM3 socket and DDR3 support are the only viable reasons to choose it.
How It Compares
Intel Core i5-2410M: This rival has an identical average score of 589, with a deltaPct of 0. The 905e is effectively tied with a mobile dual-core i5 from the Sandy Bridge era. In practice, the 2410M has two physical cores with hyper-threading, but the benchmark results show no performance difference. This means the 905e’s four cores do not provide an advantage over the i5’s two cores in the averaged benchmark suite. Users comparing these should expect identical real-world responsiveness in mixed workloads.
Intel Core i5-655K: With an average score of 590 and a deltaPct of -0.1, the 905e is 0.1% slower. The i5-655K is a desktop Clarkdale dual-core with a higher clock speed, yet the four-core 905e nearly matches it. This indicates that the 905e’s multi-threading advantage is offset by its lower per-core performance. For single-threaded tasks, the i5-655K would win, but the data does not break down that comparison.
Intel Core i5-2415M: This is another mobile dual-core with a score of 590, deltaPct -0.1, placing the 905e 0.1% behind. The similarity to the i5-2410M is expected, as both are Sandy Bridge mobile parts. The 905e’s performance is indistinguishable from these low-voltage laptop chips, reinforcing that it is a low-power desktop part that matches mobile efficiency but not desktop performance.
AMD A10-5757M: This rival scores 588, with a deltaPct of 0.2, meaning the 905e is 0.2% faster. The A10-5757M is a mobile APU with integrated graphics, but the CPU portion is marginally slower. This is the only rival that the 905e beats, though the margin is negligible. The presence of these rivals, all from the mobile or low-power desktop segments, shows that the 905e competes only with laptop-class silicon.
FAQ
Q: Is the AMD Phenom II X4 905e suitable for modern gaming?
A: No. The Cinebench R23 single-core score of 241 and multi-core score of 1711 place it at the 13th percentile of all CPUs, which is far below the requirements of modern game engines that demand strong single-thread performance.
Q: Does this processor support ECC memory?
A: Yes, the fact pack lists ECC memory support as true, which is a rare feature for a desktop CPU. This could be useful for a small home server, but the low performance limits its practicality.
Q: What is the TDP and what cooler do I need?
A: The TDP is 65 W, which implies a basic air cooler with a small fan is sufficient. No high-end cooling solution is required, and the 45 nm process helps keep heat manageable.
Q: Can I overclock the Phenom II X4 905e?
A: No, the multiplier is not unlocked. The base clock is fixed at 2.50 GHz with no boost clock, so overclocking is not an option without external clock generator adjustments, which are not covered in the data.
Q: What memory type does the 905e use?
A: It uses DDR3 memory in a dual-channel configuration, with a memory bandwidth of 21.3 GB/s. ECC memory is supported, but the motherboard must also support it.
Q: How does the 905e compare to the Intel Core i5-2410M?
A: The average benchmark scores are identical at 589, with a deltaPct of 0. This means the 905e and the i5-2410M perform the same on average, despite the 905e having four cores versus the i5’s two cores.
The Intel Equivalent of Phenom II X4 905e
Looking for a similar processor from Intel? The Intel Core i5-750 offers comparable performance and features in the Intel lineup.
Popular AMD Phenom II X4 905e Comparisons
See how the Phenom II X4 905e stacks up against similar processors from the same generation and competing brands.
Compare Phenom II X4 905e with Other CPUs
Select another CPU to compare specifications and benchmarks side-by-side.
Browse CPUs