AMD Opteron 6348

The AMD Opteron 6348 is a 12-core, 12-thread server/workstation processor built on the Piledriver architecture (codename Abu Dhabi) and manufactured on GlobalFoundries' 32 nm process. It runs at a base clock of 2.80 GHz with a 3.40 GHz boost, fits the AMD Socket G34, and carries a 115 W TDP. The chip integrates 2,400 million transistors across two 315 mm² dies, with 576 KB of L1 cache, 2 MB of L2 per module, and 8 MB of L3 per die. It supports quad-channel DDR3 memory with ECC and a peak bandwidth of 59.7 GB/s, plus PCIe Gen 2 connectivity. Its average benchmark score is 1930, placing it in the 45th percentile of all CPUs. The launch MSRP was $575.

How It Compares

Against the AMD Ryzen 3 4300U, the Opteron 6348 trails by a razor-thin 0.4% in average benchmark score. The Ryzen 3 4300U scores 1938 versus the Opteron's 1930. This is a negligible difference, but it shows that a modern low-power mobile part can match a 12-core server chip from an earlier era in overall synthetic performance. The gap is within measurement noise, yet the Opteron's much higher power envelope and older architecture make the parity striking.

The Intel Core i7-7820HQ posts an average score of 1922, which is 0.4% lower than the Opteron 6348's 1930. This 45 W mobile processor from Intel's 7th generation effectively ties the 115 W server part. The Opteron's lead is statistically insignificant, but it does hold a slight edge in the aggregate benchmark data. For workloads that scale with thread count, the Opteron's 12 threads might offer an advantage, but the synthetic average does not reflect that nuance.

Similarly, the Intel Xeon E3-1575M v5 also scores 1922, matching the Core i7-7820HQ exactly. The Opteron 6348 is 0.4% faster than this mobile Xeon. Both Intel parts are quad-core designs with hyper-threading, yet they land within a fraction of the Opteron's multi-core result. This indicates that the Opteron's older Piledriver cores, despite their number, do not translate into a decisive performance lead over more efficient modern cores.

The Intel Core i7-9850HL achieves an average score of 1941, which is 0.6% higher than the Opteron 6348. This is the only rival in the immediate group to edge out the Opteron. The i7-9850HL is a low-power embedded processor, and its 1941 score underscores how far CPU efficiency has come since the Opteron's 2012 debut. The Opteron's 45th percentile ranking among all CPUs reflects its position as a mid-pack performer in the current benchmark landscape.

Who Should Consider It

The Opteron 6348 is best suited for workloads that exploit many threads and benefit from ECC memory reliability. Its 12 cores and 12 threads, combined with quad-channel DDR3 support, make it a plausible candidate for legacy server applications, virtualization hosts, or multi-threaded rendering tasks where absolute single-thread speed is less critical. The Cinebench R23 multi-core score of 6672 shows a strong scaling from its single-core score of 942, roughly a 7x improvement, which indicates that the chip's architecture responds well to parallel workloads. In contrast, its single-core scores are modest: R15 single-core 94, R20 single-core 395, and R23 single-core 942. These numbers place it firmly in the lower tier for lightly-threaded applications like older games or single-threaded scripts.

For office productivity and everyday desktop tasks, the Opteron 6348 is not an ideal choice. Its single-thread performance is far below what modern office software expects, and the lack of integrated graphics means a discrete GPU is mandatory. However, for a headless server running database queries, file serving, or containerized workloads that can use all 12 threads, the chip remains functional. The ECC memory support is a distinct advantage for long-running, error-sensitive computations. The quad-channel memory bus, with 59.7 GB/s bandwidth, also helps in memory-bound server tasks.

The 45th percentile ranking suggests that the Opteron 6348 sits in the middle of the performance distribution. It outperforms many older CPUs but falls behind most modern processors. If the workload is heavily multi-threaded and the software is tolerant of older instruction sets, the Opteron can still deliver acceptable throughput. For anyone considering it today, the end-of-life status and the need for a G34 motherboard with compatible DDR3 RDIMMs are important practical considerations.

Power and Thermals

The Opteron 6348 has a TDP of 115 W, which is typical for a server processor of its generation. This power envelope requires a cooling solution designed for socket G34, such as a server-grade heatsink or a capable air cooler that can handle the sustained load of multi-threaded workloads. The 32 nm process node and dual-die design (two 315 mm² dies) mean that heat is generated across a relatively large surface area, but the 115 W figure is modest by modern high-core-count standards. A tower-style air cooler with a 120 mm fan would likely suffice for most server chassis, though the lack of an integrated GPU and the socket's server orientation often mean the system is built in a rackmount case with dedicated airflow.

The boost clock of 3.40 GHz is 600 MHz above the base clock, and the chip can maintain this for short bursts if thermal headroom allows. However, sustained all-core loads will pull power toward the TDP limit, and the cooling solution must be able to dissipate 115 W continuously. The dual-die layout also means that the thermal interface between the dies and the heatspreader is critical; older Opteron systems often benefit from high-quality thermal paste. In a well-ventilated server chassis, the Opteron 6348 should run within its thermal specifications, but it will not be as power-efficient as modern parts, a direct consequence of the 32 nm process and Piledriver architecture.

FAQ

Q: What is the launch MSRP of the AMD Opteron 6348?

A: The launch MSRP was $575.

Q: Does the Opteron 6348 support ECC memory?

A: Yes, it supports ECC memory, which is essential for error-sensitive server and workstation workloads.

Q: What socket does the Opteron 6348 use?

A: It uses the AMD Socket G34.

Q: What is the production status of this processor?

A: It is end-of-life, meaning AMD no longer produces or sells it.

Q: How does the Opteron 6348 compare to the AMD Ryzen 3 4300U in average benchmark score?

A: The Opteron 6348 scores 1930, which is 0.4% lower than the Ryzen 3 4300U's 1938.

Q: What is the process node and transistor count?

A: It is built on a 32 nm process with 2,400 million transistors.

Benchmark Performance

The Opteron 6348's benchmark scores reveal a processor that scales well with thread count but lags in single-thread performance. In Cinebench R15, it scores 672 multi-core and 94 single-core, a ratio of 7.15. The R20 test yields 2802 multi-core and 395 single-core, a ratio of 7.09. The R23 test shows 6672 multi-core and 942 single-core, a ratio of 7.08. This consistent ~7x scaling indicates that the 12 cores are being effectively utilized in these workloads, but the absolute single-core numbers are low, the R23 single-core score of 942 is less than half of what many modern desktop processors achieve.

When compared to its nearest rivals using the average benchmark score, the Opteron 6348 sits in a tight cluster. It is 0.4% slower than the AMD Ryzen 3 4300U (1938 vs. 1930), 0.4% faster than the Intel Core i7-7820HQ (1922), 0.4% faster than the Intel Xeon E3-1575M v5 (1922), and 0.6% slower than the Intel Core i7-9850HL (1941). These deltas are all within 0.6 percentage points, meaning that the Opteron 6348 is statistically indistinguishable from these four rivals in aggregate performance. This is remarkable given the architectural and generational gaps, the Opteron is a 2012 server part, while the rivals include mobile and embedded CPUs from 2019-2020.

The percentile rank of 45 indicates that the Opteron 6348 outperforms 45% of all CPUs in the database. This places it in the lower-middle range. Its average score of 1930 is just above the 1922 of the two Intel parts, but just below the 1938 and 1941 of the AMD and Intel rivals respectively. The overall picture is one of a processor that, despite its age and high TDP, manages to hold its own in synthetic multi-core benchmarks against much more modern, power-efficient designs. However, the low single-core scores and the lack of modern instruction set extensions will limit its real-world performance in current software that is optimized for newer architectures.