AMD Opteron A1120

AMD Opteron A1120 is a 4-core, 4-thread server processor built on ARM’s Cortex-A57 architecture, part of the Seattle generation, and fabricated on a 28 nm process by GlobalFoundries. Operating from a base clock of 1700.00 MHz with no boost capability, this chip targets the server and workstation segment via the AMD Socket SP1, and it sits at the 50th percentile among all CPUs in the database, indicating a midpoint performance profile. The processor supports dual-channel DDR3 and DDR4 memory with ECC, offering 29.9 GB/s of memory bandwidth, and provides PCIe Gen 3 with 8 lanes from the CPU. Production status is end-of-life, with a release date of January 13, 2016.

Who Should Consider It

The AMD Opteron A1120 is best suited for workloads that prioritize low power consumption and memory integrity over raw computational throughput. Given its 4 cores and 4 threads, this processor aligns with single-threaded or lightly threaded server tasks, such as basic web serving, lightweight database queries, or network-attached storage (NAS) operations where ECC memory support is a critical requirement. The presence of 8 MB of shared L3 cache and 2 MB of shared L2 cache helps mitigate latency for moderate data sets, but the lack of boost clock means performance is fixed at 1700.00 MHz, which limits responsiveness in bursty workloads.

For creation tasks like video encoding or 3D rendering, the data indicates this is not a suitable choice; the 4-thread configuration and low clock speed will produce benchmark scores far below typical workstation processors. Office productivity, including document editing and spreadsheet manipulation, is feasible but not compelling, as even entry-level desktop CPUs with higher clocks would outperform this part in single-threaded scenarios. The processor’s strength lies in environments where reliability and low power draw are paramount, such as always-on server clusters or edge computing nodes that handle modest request volumes.

Gaming is not a target scenario for the Opteron A1120, as it lacks an integrated GPU and its server-oriented architecture does not prioritize the high-frequency, low-latency performance that gaming titles demand. The 50th percentile ranking across all CPUs suggests a balanced but unremarkable standing; it is neither a high-end performer nor a bottom-tier part, making it a plausible choice for legacy server upgrades or specific ARM-based software stacks. The 25 W TDP class implies it can be passively cooled or used in dense chassis, which is a distinct advantage for fanless industrial applications or remote deployments where acoustic and thermal footprints matter more than speed.

Power and Thermals

The AMD Opteron A1120 carries a TDP of 25 W, placing it in the ultra-low-power category typically reserved for embedded or mobile-class processors. This TDP class dictates that a simple, low-profile heatsink is sufficient for cooling; no active fan is strictly necessary in well-ventilated enclosures, though a small fan may be used for safety margins in warmer ambient conditions. The 28 nm process node contributes to this efficiency, and the die size of 182 mm² suggests a modest transistor density that keeps heat generation low relative to larger server chips.

Because the processor has no boost clock, power draw remains constant under load, which simplifies thermal design — there are no transient power spikes to account for. The 25 W figure means that even in a multi-socket system (if the motherboard supports it), total thermal output stays manageable, enabling higher node densities in rack-mounted configurations. Memory support for both DDR3 and DDR4 with ECC adds a slight thermal overhead on the memory controller, but the dual-channel bus at 29.9 GB/s does not stress the thermal envelope significantly.

For system integrators, the cooling tier implied is a passive heatsink or a low-profile active cooler with a 40 mm or 50 mm fan. The absence of a boost clock also means no need for enhanced VRM phases or robust power delivery beyond what a standard server motherboard provides. This makes the A1120 a viable option for fanless appliances, such as network firewalls or industrial controllers, where reliability and silent operation are prioritized over peak performance.

How It Compares

The FACT PACK lists no nearest rivals for the AMD Opteron A1120, meaning there are no direct comparison points with specific scores or deltaPct values to reference. This absence indicates that the processor occupies a unique niche — likely due to its ARM architecture in a server context — where few mainstream x86 parts are directly analogous. Without rival data, benchmark results can only be interpreted against the broader percentile ranking, which places it at the 50th percentile of all CPUs.

In the absence of named competitors, the comparison must be framed generically: against typical x86 server processors, the A1120’s 4-thread count and 1700.00 MHz base clock suggest significantly lower multi-threaded throughput, but its 25 W TDP gives it an efficiency advantage. Against other ARM server chips from the same era, the Cortex-A57 design is a mid-tier implementation, not the high-end ARM Cortex-A72 or newer designs. The 8 MB L3 cache is generous for a 4-core part, which may help in cache-sensitive workloads, but the lack of boost clock limits single-thread burst performance.

The 50th percentile ranking implies that half of all CPUs in the database score higher and half score lower, which is a neutral position. However, because this percentile is based on all CPUs, including desktop and mobile parts, the A1120’s server context must be considered — a 50th percentile server CPU may be adequate for entry-level tasks but not for heavy virtualization or large-scale data processing. The end-of-life status further means that newer ARM or x86 parts will likely outperform it, so comparisons should account for the fact that this is a legacy product.

FAQ

Q: What is the maximum memory bandwidth of the AMD Opteron A1120?

A: The processor supports dual-channel DDR3 and DDR4 memory with a maximum memory bandwidth of 29.9 GB/s, and it includes ECC memory support for error correction.

Q: Does the AMD Opteron A1120 have a boost clock?

A: No, the base clock is fixed at 1700.00 MHz and there is no boost clock available, meaning the processor runs at a constant frequency under all conditions.

Q: What socket does the AMD Opteron A1120 use?

A: It uses the AMD Socket SP1, which is specific to the Opteron Seattle generation server processors.

Q: Is the AMD Opteron A1120 still in production?

A: No, the production status is end-of-life, and it was released on January 13, 2016.

Q: How many PCIe lanes does the CPU provide?

A: The CPU provides 8 PCIe Gen 3 lanes, which are available from the CPU only (not through a separate chipset).

Q: What is the process node and die size of the AMD Opteron A1120?

A: It is fabricated on a 28 nm process by GlobalFoundries, with a die size of 182 mm².

Benchmark Performance

The AMD Opteron A1120 has an average benchmark score of 0, which is an anomaly in the dataset, and it holds a 50th percentile ranking among all CPUs. This zero score suggests that no standardized benchmark results have been recorded, or that the processor fails to register in the testing methodology used by the database. As a result, any performance analysis must rely on the architectural specifications and the percentile ranking, rather than direct score comparisons.

Given the 4 cores and 4 threads, the multi-threaded performance will be inherently limited to 4 simultaneous threads, which is a fraction of what modern 8-core or 16-core server processors offer. The 1700.00 MHz clock speed is low by contemporary standards, indicating that even single-threaded integer and floating-point operations will lag behind parts with clocks above 3000 MHz. The 8 MB shared L3 cache is a positive factor, as it can reduce memory latency for frequently accessed data, but the 29.9 GB/s memory bandwidth is narrow compared to quad-channel or higher-bandwidth systems.

The lack of boost clock means there is no headroom for short-duration performance spikes, so the processor’s performance is predictable but flat. In workloads that are memory-bound, the ECC support and dual-channel bus provide stability, but the bandwidth figure of 29.9 GB/s is a bottleneck for large data transfers. The 50th percentile ranking, while neutral overall, must be interpreted cautiously: since the average benchmark score is zero, the percentile may reflect a default or unranked status rather than true competitive placement.

Comparisons to rivals are impossible due to the empty nearestRivals array in the data, but a qualitative assessment suggests that this processor would be substantially slower than any modern x86 server chip in multi-threaded tasks, while offering competitive efficiency per watt. For single-threaded workloads, the 1700.00 MHz clock will produce mediocre results, but the L3 cache may help in some latency-sensitive applications. The 28 nm process node is older, meaning the A1120 is likely outperformed by newer ARM processors on the same architecture, but its 25 W TDP remains a defining feature that allows for dense deployments. Ultimately, this processor is a niche product for specific low-power server roles, and its benchmark data does not indicate strong performance in any general-purpose category.