AMD Opteron 6320

AMD Opteron 6320 is an eight-core server processor built on the Piledriver architecture and codenamed Abu Dhabi, targeting the Server/Workstation market segment with a 115 W TDP and a launch MSRP of $293. It operates at a base clock of 2.80 GHz and a boost clock of 3.30 GHz, supporting DDR3 memory in a quad-channel configuration with a memory bandwidth of 59.7 GB/s and ECC memory. The chip is manufactured on a 32 nm process by GlobalFoundries, featuring 2,400 million transistors across a dual-die design with each die measuring 315 mm², and it includes 384 KB of L1 cache, 2 MB of L2 cache per module, and 8 MB of L3 cache per die.

Benchmark Performance

The benchmark database places the AMD Opteron 6320 at the 50th percentile among all CPUs, which indicates it sits exactly at the median of the tested processor population, neither a standout performer nor a laggard. The average benchmark score for this chip is recorded as 0 in the data, which means no direct numeric score is available for comparison; therefore, the percentile is the primary quantitative reference. Being at the 50th percentile implies that roughly half of all CPUs in the database outperform it and half underperform it, a position typical for a mid-tier server part from its era.

Since the nearestRivals list is empty in the fact pack, no direct deltaPct values or rival names can be cited. The analysis must rely on the percentile alone. In practical terms, a 50th percentile ranking means the Opteron 6320 will handle general server workloads, such as database queries, virtualization hosts, or file serving, without embarrassment, but it will not lead any performance charts. For compute-heavy tasks like scientific simulations or high-frequency trading, the data suggests this chip would be a bottleneck compared to the top quartile of processors.

The absence of rival data means the chip's absolute performance must be inferred from its architecture and clock speeds. With eight cores and eight threads, it offers one thread per core, which is a straightforward configuration without simultaneous multithreading. The 2.80 GHz base clock and 3.30 GHz boost clock are modest figures when placed against the context of a 50th percentile ranking, indicating that raw clock speed is not its primary asset. The 2,400 million transistors and dual-die layout (2x 315 mm²) suggest a design focused on memory bandwidth and multi-socket scalability rather than single-thread supremacy.

Single-Thread vs Multi-Thread Behavior

The Opteron 6320 provides eight cores and eight threads, meaning each core handles exactly one thread. This configuration avoids the overhead of thread switching but also means the chip cannot extract extra parallelism from simultaneous multithreading. For workloads that scale linearly with core count, such as compiling large codebases, rendering frames in software, or running multiple virtual machines, the eight physical cores deliver predictable performance. The dual-die design, with each die carrying its own 8 MB of L3 cache, helps keep data local to the cores that need it, reducing cross-die traffic.

Single-thread performance is governed by the boost clock of 3.30 GHz, which is the maximum frequency a single core can reach under thermal and power headroom. Given the Piledriver architecture's design priorities, this chip is not optimized for latency-sensitive single-threaded tasks like legacy database transactions or single-threaded application logic. The 50th percentile ranking suggests that in mixed workloads, the chip's multi-threaded capabilities compensate for its modest single-thread showing, but for applications that cannot use more than one or two cores, the Opteron 6320 will feel sluggish compared to newer designs.

The cache hierarchy also influences thread behavior. The 2 MB of L2 cache per module (with two cores likely sharing a module) and 8 MB of L3 cache per die mean that some data sharing occurs within a module but not across dies. This architecture favors workloads that can be partitioned by die, such as NUMA-aware applications. For multi-threaded workloads that require heavy inter-core communication, the lack of a shared L3 across the entire chip could introduce latency, though the fact pack does not provide specific latency numbers.

Power and Thermals

The TDP is rated at 115 W, which places the Opteron 6320 in a medium-power server class. This TDP figure is a thermal design point, not a maximum power draw, but it guides cooling requirements. A 115 W processor in a server context typically needs a dedicated heatsink with a fan, not just passive cooling. Standard 1U or 2U server chassis with active cooling solutions should handle this chip without special liquid cooling or exotic thermal solutions.

The 32 nm manufacturing process from GlobalFoundries is relatively mature for its time, and the dual-die layout (2x 315 mm²) means heat is generated across two separate silicon dies. This can be beneficial for thermal management because it spreads heat sources across a larger area, but it also means the heat spreader must cover both dies effectively. The 115 W TDP suggests that a capable air cooler, a tower-style cooler with heat pipes or a high-quality server heatsink, would be sufficient. No specific cooler size is stated in the data, so the guidance is qualitative: this chip does not demand liquid cooling or extreme airflow.

In a dense server environment, the 115 W TDP is moderate compared to higher-TDP parts that might require more aggressive cooling or reduced ambient temperatures. The boost clock of 3.30 GHz will only be sustained when thermals allow, so in poorly ventilated chassis, the chip may spend more time at the 2.80 GHz base clock. The production status is end-of-life, meaning thermal solutions designed for this socket are no longer in active development, but existing coolers for the G34 platform should still be compatible.

How It Compares

The fact pack provides no nearest rivals, so a direct numerical comparison is not possible. The only quantitative anchor is the 50th percentile ranking, which positions the chip in the middle of the database's CPU population. Without rival names or deltaPct values, any comparison must be framed in general terms based on the chip's own specifications.

Against typical server processors from the same generation, the Opteron 6320's eight cores and 115 W TDP put it in the mainstream of dual-socket server parts. Its quad-channel DDR3 memory support with 59.7 GB/s bandwidth is competitive for its era, though newer platforms with DDR4 or DDR5 would offer higher bandwidth. The PCIe Gen 2 support is a limitation, newer servers use PCIe Gen 4 or Gen 5 for faster I/O, but for legacy workloads, Gen 2 is adequate. The lack of integrated graphics means a discrete GPU or a server BMC controller is required, which is typical for server processors.

Compared to higher-core-count server chips, the Opteron 6320's eight cores will lag in heavily threaded workloads like large-scale virtualization or big data analytics. Compared to lower-core-count desktop processors, its multi-threaded throughput is stronger, but its single-thread performance and platform features (like PCIe Gen 2) are dated. The 50th percentile is a fair summary: it is an average performer in the grand scheme of all CPUs, adequate for legacy server duties but not competitive with modern parts.

Platform and Compatibility

The Opteron 6320 uses AMD Socket G34, which is a server socket designed for multi-socket configurations. This socket supports dual-processor setups, allowing two Opteron 6320 chips to work together in a single motherboard, effectively doubling the core count to 16 for compatible workloads. The memory support is DDR3 in a quad-channel configuration, providing a memory bandwidth of 59.7 GB/s; the system also supports ECC memory, which is critical for error-free server operation over long uptimes. The memory bus is quad-channel, meaning four sticks of DDR3 are used to achieve the full bandwidth figure.

PCIe support is Gen 2, which provides adequate bandwidth for storage controllers, network cards, and GPUs that were common during the chip's active life. However, modern PCIe Gen 4 or Gen 5 devices would be bottlenecked or incompatible without an adapter. The chip does not include integrated graphics, so a separate video adapter or a server management controller is necessary for display output. The multiplier is locked, so overclocking is not possible; the boost clock of 3.30 GHz is the maximum obtainable frequency.

The platform uses the Piledriver architecture and the Abu Dhabi codename, part of the Opteron (Abu Dhabi) generation. The process node is 32 nm, and the chip is built by GlobalFoundries with 2,400 million transistors. The memory support is exclusively DDR3, so upgrading to DDR4 or DDR5 is not possible on this socket. The production status is end-of-life, meaning new motherboards and chips are no longer manufactured, but used or refurbished parts may still be available for legacy systems. The upgrade path is limited to other G34-socket Opteron processors, which are also end-of-life, so any system built around this chip is a fixed configuration.

FAQ

Q: How many cores and threads does the AMD Opteron 6320 have?

A: It has 8 cores and 8 threads, with each core supporting exactly one thread.

Q: What is the maximum memory bandwidth supported by this processor?

A: The chip supports quad-channel DDR3 memory with a total bandwidth of 59.7 GB/s.

Q: Does the Opteron 6320 support ECC memory?

A: Yes, it supports ECC memory, which is a requirement for reliable server operation.

Q: What is the TDP of this chip, and what cooling does it imply?

A: The TDP is 115 W, which means a capable air cooler with a fan is sufficient; no liquid cooling is necessary.

Q: What socket does the Opteron 6320 use, and can it be upgraded?

A: It uses AMD Socket G34, which supports dual-socket configurations. The upgrade path is limited to other G34-socket processors, all of which are end-of-life.

Q: What PCIe generation does the chip support?

A: It supports PCIe Gen 2, which is adequate for older peripherals but not compatible with the fastest modern expansion cards.