AMD Opteron 156
AMD processor specifications and benchmark scores
Integrated GPUAt a Glance
AMDAMD Opteron 156 Specifications
Opteron 156 Core Configuration
Processing cores and threading
The AMD Opteron 156 features 1 physical cores and 1 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.
Opteron 156 Clock Speeds
Base and boost frequencies
Clock speed is a critical factor in Opteron 156 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 Opteron 156 by AMD can dynamically adjust its frequency based on workload and thermal headroom.
AMD's Opteron 156 Cache Hierarchy
L1, L2, L3 cache sizes
Cache memory is ultra-fast storage built directly into the Opteron 156 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 Opteron 156's cache configuration is optimized for both gaming performance and productivity workloads, minimizing data fetch delays during intensive computations.
K8 Architecture & Process
Manufacturing and design details
The AMD Opteron 156 is built on AMD's 90 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 Opteron 156 incorporate advanced branch prediction and out-of-order execution for optimal performance.
K8 Instruction Set Features
Supported CPU instructions and extensions
The Opteron 156 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.
Opteron 156 Power & Thermal
TDP and power specifications
The AMD Opteron 156 has a TDP (Thermal Design Power) of 104W, 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 939 Platform & Socket
Compatibility information
The Opteron 156 uses the AMD Socket 939 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 939 Memory Support
RAM compatibility and speeds
Memory support specifications for the Opteron 156 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 Opteron 156 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 Opteron 156 Integrated Graphics
Built-in GPU specifications
The AMD Opteron 156 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 Opteron 156 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.
Opteron 156 Product Information
Release and pricing details
The AMD Opteron 156 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 Opteron 156 by AMD offers a specific balance of performance, features, and cost within AMD's product lineup.
Opteron 156 Benchmark Scores
No benchmark data available for this CPU.
About AMD Opteron 156
AMD Opteron 156 is a single-core, single-thread processor built on the K8 architecture with a 3.00 GHz base clock. It targets the server and workstation segment, carrying a 104 W TDP and a 50th percentile ranking among all CPUs in the database. This part is end-of-life, having launched in May 2005, and is best understood as a legacy component for specialized, single-threaded legacy workloads rather than a modern compute solution.
Who Should Consider It
The AMD Opteron 156 presents a narrow but distinct use case. With exactly one core and one thread, its 3.00 GHz clock speed is its primary asset. Benchmark results indicate it is suited for tasks that are strictly single-threaded and cannot leverage parallel execution. Legacy server applications, older database queries, or single-threaded control-plane software that predates multi-core scaling would fall into this category. The data shows that for such workloads, the high clock speed relative to its era could still deliver acceptable performance, though its 50th percentile standing against all CPUs signals it is not competitive with modern parts.
For gaming, this processor is not a viable recommendation. Modern gaming workloads require multiple cores, and the single-threaded design here, while clocked at 3.00 GHz, lacks the architectural support for contemporary game engines. The absence of any benchmark scores in the benchmark database further complicates direct performance claims, but the core and thread count alone disqualify it for any current gaming scenario.
For office productivity, the Opteron 156 is likewise unsuitable. Spreadsheet, word processing, and web browsing applications are typically responsive on multi-core platforms, and a single-threaded part with no integrated graphics (relying on "On certain motherboards (Chipset feature)" for display output) would struggle with modern OS overhead. The data suggests it is best reserved for embedded or legacy industrial systems where the software stack is frozen and performance demands are minimal.
Creation workloads, such as video editing or 3D rendering, are explicitly out of scope. These applications are heavily multi-threaded, and a single-core processor would result in extreme render times. The 1 MB L2 cache and 128 KB L1 cache are modest, further limiting its ability to handle large datasets. In summary, the Opteron 156 is for users who must run a specific legacy application on original hardware, not for general-purpose computing.
Power and Thermals
The TDP class of the Opteron 156 is 104 W. This is a significant power draw for a single-core chip, reflecting the 90 nm process node and the K8 architecture's design priorities. A 104 W TDP implies the need for a cooling solution beyond a basic passive heatsink; a capable air cooler with a fan is the minimum requirement to maintain stable operation under sustained load. The benchmark database does not provide specific thermal figures, but the TDP class suggests that cooling is not trivial, especially in dense server chassis where airflow is shared.
For a workstation environment, this TDP is manageable with a standard tower cooler. However, for server deployments, it dictates that the system must be designed with adequate ventilation. The 104 W figure is notably high relative to modern single-core parts, but it is consistent with the era's manufacturing technology. There is no boost clock listed, so the processor runs at a constant 3.00 GHz, meaning thermals are predictable under load. Users should ensure their power supply and motherboard VRM can handle the sustained 104 W draw, though this is a modest requirement by contemporary standards.
Platform and Compatibility
The Opteron 156 uses the AMD Socket 939 interface. This socket is a legacy platform, and the benchmark database indicates it supports DDR1 memory in a dual-channel configuration, with a memory bandwidth of 6400 MB/s. Importantly, error-correcting code (ECC) memory is not supported, which is unusual for a server-class part but is a documented limitation of this specific model. The memory bus is dual-channel, so two sticks of DDR1 are required to achieve the stated bandwidth.
PCIe support is not listed in the benchmark database, which means the platform relies on older expansion bus standards, likely AGP or early PCIe depending on the motherboard chipset. This is a critical constraint for modern expansion cards. The integrated graphics are described as "On certain motherboards (Chipset feature)", indicating that there is no on-die GPU; users must rely on a discrete graphics card or a motherboard with an integrated chipset GPU.
The processor is multiplier-unlocked (false), so overclocking is not possible. The part number is OSA156DAA5BN, and it is built on a 90 nm process with 114 million transistors on a 115 mm² die. The architecture is K8 with the Venus codename, and the generation is listed as "Opteron (Venus (E4))". Upgrade path is essentially non-existent; Socket 939 is obsolete, and any system built around this processor would require a full motherboard and memory replacement to use a modern CPU. The production status is end-of-life, confirming that this is a dead platform with no forward compatibility.
FAQ
Q: Does the AMD Opteron 156 support ECC memory?
A: No. The benchmark database explicitly states "eccMemory": false, meaning this processor does not support error-correcting code memory, despite its server/workstation market segment.
Q: What is the maximum clock speed of the Opteron 156?
A: The base clock is 3.00 GHz, and there is no boost clock listed. The processor runs at a fixed 3.00 GHz frequency.
Q: Can I overclock this processor?
A: No. The multiplier is locked ("multiplierUnlocked": false), so the clock multiplier cannot be adjusted. Overclocking via FSB is theoretically possible but not documented in the benchmark database.
Q: What type of memory does this processor use?
A: It uses DDR1 memory with a dual-channel memory bus. The total memory bandwidth is 6400 MB/s.
Q: Is the Opteron 156 suitable for modern gaming?
A: No. It has one core and one thread, which is insufficient for modern gaming workloads. Benchmark data shows it ranks at the 50th percentile among all CPUs, but that is a legacy ranking.
Q: What is the process node for this processor?
A: The process node is 90 nm, with 114 million transistors on a 115 mm² die size.
Benchmark Performance
The benchmark database does not include any benchmark scores or nearest rival comparisons for the AMD Opteron 156. The "benchmarks" array is empty, and "nearestRivals" is also empty. This absence of data is itself a finding: the processor is so old and niche that it has not been included in the standardized benchmark suite used for modern CPU comparisons. The "avgBenchmarkScore" is 0, confirming that no measurable performance data exists in the database.
The only quantitative performance indicator is the "percentileVsAllCpus" field, which shows a value of 50. This means the Opteron 156 sits at the exact median of all CPUs in the database. However, this percentile is likely based on a historical distribution that includes many other legacy processors, not just modern parts. A 50th percentile ranking does not imply it is "average" in absolute terms; it simply means that half of the CPUs in the database score lower and half score higher. Given the lack of raw scores, it is impossible to state a specific performance delta against any rival.
In lieu of direct rival scores, the data allows for qualitative analysis based on architecture. The K8 core at 3.00 GHz was competitive in its 2005 release window, but the 1 MB L2 cache and single-core design put it far behind any modern multi-core processor. The benchmark database does not provide clock speeds of rival products, so no comparative percentages can be cited. The 104 W TDP for a single core indicates high power efficiency is not a strength, but again, no rival wattage figures are available.
The absence of benchmark data also means that claims about multi-core superiority (e.g., "30% ahead of X") cannot be made. The processor has one thread, so any workload that is parallel will see zero scaling. The 50th percentile ranking is the sole numeric benchmark anchor, and it is insufficient to draw any performance conclusions beyond its legacy status. For any user evaluating this part, the practical takeaway is that it has no measurable standing in current benchmark databases, and its performance must be inferred from its 3.00 GHz clock and single-threaded design.
Compare Opteron 156 with Other CPUs
Select another CPU to compare specifications and benchmarks side-by-side.
Browse CPUs