AMD Opteron X2 275

The AMD Opteron X2 275 is a dual-core server/workstation processor built on the K8 architecture with the codename Italy. Manufactured by AMD on a 90 nm process with 233 million transistors, it runs at a fixed base clock of 2.20 GHz with no boost capability. Released on May 30, 2005, it targets the Server/Workstation segment and is now marked as end-of-life. The processor uses the AMD Socket 940 interface, supports dual-channel memory, and offers PCIe Gen 2 connectivity. With a 95 W TDP and a 50th percentile rank among all CPUs tracked, this chip occupies a distinctly middle-ground position in the performance spectrum, though its benchmark data is sparse.

Benchmark Performance

The database records a percentile rank of 50 for the Opteron X2 275, placing it exactly at the median of all processors tracked. This means that half of the CPUs in the database are faster and half are slower, indicating a balanced, unremarkable performance profile. However, the average benchmark score for this part is 0, which suggests that no standardized benchmark results have been captured for it. The percentile is therefore derived from historical or incomplete data, but it still provides a useful reference point: the chip is neither a high-end nor a low-end performer.

With only two cores and two threads, the Opteron X2 275 cannot leverage parallel workloads beyond a single pair of threads. The 2.20 GHz base clock is modest by modern standards, and the absence of a boost clock means the processor always operates at that frequency, limiting burst performance. For single-threaded or lightly threaded tasks, the chip can deliver adequate throughput, but it will struggle with any application that scales across many cores. The 1 MB L2 cache and 128 KB L1 cache provide a reasonable amount of on-die storage for its era, though they are small compared to contemporary designs.

The lack of benchmark scores makes it impossible to quantify its performance against specific workloads. The 50th percentile rank, however, suggests that it would handle routine server duties—such as basic web serving, light database queries, or simple file serving—without issue, but it would not excel in compute-intensive or highly parallel scenarios. The fixed clock speed also means that performance is predictable, which can be an advantage in power-constrained environments.

Who Should Consider It

Given its server/workstation market segment and dual-core design, the Opteron X2 275 is best suited for legacy applications that do not require high thread counts. Workloads such as basic web serving, simple database transactions, or single-threaded scientific calculations could be served by this chip. The 50th percentile rank indicates that it will not be a bottleneck for such tasks, but it will not provide headroom for growth. For modern multi-core-aware software, the two-thread limit is a severe constraint, so this processor is not recommended for contemporary workloads.

The chip is also a candidate for retro computing or specialized legacy systems that require Socket 940 compatibility. Its end-of-life status means it is no longer produced, but for maintaining or upgrading an older server platform, it could be a functional drop-in replacement. The lack of ECC memory support—a notable omission for a server part—means it is not suitable for mission-critical environments that require error correction. The absence of integrated graphics further limits its use to systems with discrete GPUs, which is typical for server platforms.

In short, the Opteron X2 275 is a processor for specific, narrow use cases. It is not a general-purpose CPU for modern desktops or high-performance servers. Its 50th percentile rank and dual-thread architecture make it a viable option only for tasks that are inherently single-threaded or that can run within a two-thread envelope.

Platform and Compatibility

The Opteron X2 275 uses the AMD Socket 940 interface, a platform that was common in early 2000s server systems. It supports dual-channel memory, though the specific memory types are not listed in the database. Notably, the ECC memory flag is false, meaning this processor does not support error-correcting code memory—an unusual feature for a server CPU, as ECC is often essential for data integrity in server environments. The memory bus is dual-channel, which provides adequate bandwidth for the 2.20 GHz dual-core design, but the lack of ECC may be a dealbreaker for certain deployments.

The processor provides PCIe Gen 2 connectivity, allowing for modern expansion cards within the limits of the platform. This is a forward-looking feature for a 2005 product, as PCIe Gen 2 offers higher bandwidth than the older PCI or AGP standards. The chip has no integrated graphics, so a discrete GPU is required for any display output, which is standard for server processors. The multiplier is locked, preventing overclocking and ensuring that the chip runs at its specified 2.20 GHz at all times.

The part number is OSA275FAA6CB, and the architecture is K8 with the codename Italy. The process node is 90 nm, and the transistor count is 233 million. The die size is not specified, but the 90 nm process was typical for mid-2000s server chips. As an end-of-life product, there is no forward upgrade path within the same socket; users are limited to the capabilities of this specific chip. The release date of May 30, 2005, places it in the early dual-core era, and its Socket 940 compatibility ties it to a specific generation of Opteron motherboards.

How It Compares

The nearestRivals field in the database is empty, so no direct comparison to specific competing processors is available. The only comparative metric is the 50th percentile rank, which places the Opteron X2 275 exactly at the midpoint of all CPUs tracked. This means that half of the processors in the database perform better and half perform worse. Without specific rival scores, we cannot quantify the delta in performance, but the dual-core, 2.20 GHz configuration suggests that it would be outperformed by any modern multi-core processor with higher clock speeds. The absence of a boost clock further limits its competitive standing.

In the context of its release era (2005), the Opteron X2 275 would have been a mid-tier server option, competing with other dual-core parts of similar clock speeds. However, the lack of benchmark data prevents a more detailed analysis. The 50th percentile rank is a broad indicator, but it does not reveal how the chip performs relative to its immediate contemporaries. The empty nearestRivals list underscores the scarcity of comparative data for this part, making it difficult to assess its standing against specific alternatives.

Given its end-of-life status and the absence of rival scores, the Opteron X2 275 should be viewed as a historical component rather than a current competitor. Its performance is adequate for its intended role, but it cannot be meaningfully compared to modern processors without concrete benchmark numbers.

Power and Thermals

The TDP of the Opteron X2 275 is 95 W. This power envelope is typical for a dual-core server chip of its generation. A 95 W TDP requires a cooling solution capable of dissipating that heat load; a standard air cooler with a fan would be adequate, though the exact cooler specifications are not provided. The 90 nm process node is relatively large by modern standards, which contributes to higher power consumption per transistor compared to smaller nodes. The locked multiplier means users cannot adjust voltage or frequency to reduce power, so the 95 W is a fixed operating point.

For a server environment, this TDP is manageable with standard chassis airflow. The absence of a boost clock means the chip always runs at 2.20 GHz, so power draw remains consistent under load. This predictability can be beneficial for power budgeting in data centers, though the lack of dynamic frequency scaling limits energy efficiency. The 95 W TDP also implies that a low-profile or passive cooling solution might be insufficient; active cooling with a fan is likely required. Overall, the thermal characteristics of the Opteron X2 275 are straightforward, with a moderate power draw that aligns with its dual-core, 90 nm design.