AMD Opteron 8358 SE (B3)

The AMD Opteron 8358 SE (B3) is a 4-core, 4-thread Server/Workstation processor released on 2008-04-08 and now marked end-of-life. It runs at a 2.40 GHz base clock with no boost clock listed, is built for AMD Socket Fr2, and has a 119 W TDP. The database classifies its architecture as Zen 3, with codename Barcelona and generation string "Opteron (Barcelona)". Manufacturing data lists a 65 nm process, 463 million transistors, and a 285 mm² die. Its cache hierarchy is 64 KB L1 per core, 512 KB L2 per core, and 2 MB shared L3. Memory support is DDR2, depends on the motherboard, uses a dual-channel bus with 10.7 GB/s bandwidth, and ECC is enabled. This part carries the model identification OS8358YAL4BGH, entered at a launch MSRP of $1865, and has a locked multiplier. The benchmark record is empty: no scores are recorded, nearest rivals are not listed, and the percentileVsAllCpus value is 50.

How It Compares

The nearestRivals array for the Opteron 8358 SE (B3) contains no entries. As a result, there are no rival names, no rival scores, and no deltaPct percentages to report. The only comparative field populated in the database is percentileVsAllCpus, which is 50. A value of 50 places this processor at the midpoint of the CPU distribution covered by the database. That position is a rank, not a measured performance score.

The empty benchmarks array and avgBenchmarkScore of 0 confirm that no match results are available to compute a head-to-head lead or deficit. With no nearest rival entries, the analysis cannot say that this Opteron is ahead of or behind any named processor by a specific percentage. The median percentile is the sole positional statement the data supports.

Platform and Compatibility

The Opteron 8358 SE (B3) is pinned to AMD Socket Fr2. That socket is the only physical interface specified in the record. No PCIe field is present, so PCIe generation, lane count, and lane distribution are not available from the data. The chip also has no integrated graphics listed, meaning the package itself does not provide display output.

Memory support is DDR2, with the note that support depends on the motherboard. The memory bus is dual-channel and the listed memory bandwidth is 10.7 GB/s. ECC memory support is enabled, which is consistent with the Server/Workstation market segment. The die measures 285 mm² and contains 463 million transistors on a 65 nm process. The architecture field is Zen 3, the codename is Barcelona, and the generation string is "Opteron (Barcelona)". No series name is listed, and no foundry is listed.

The release date is 2008-04-08 and production status is end-of-life. The multiplier is not unlocked, so user-controlled multiplier adjustment is not indicated by the data. The part number OS8358YAL4BGH identifies the exact SKU. Upgrade path information is limited: the record lists no additional socket-compatible processors, no roadmap, and no board compatibility data beyond the motherboard-dependent DDR2 note. Because production has ended, the data does not support a claim of ongoing platform expansion.

Who Should Consider It

Because the benchmark array is empty, the recommendations below are inferred from the specification record rather than from measured scores. The market segment is Server/Workstation, and the CPU has 4 cores and 4 threads at a 2.40 GHz base clock. That makes it a candidate for server tasks that require only 4 threads but benefit from ECC memory and an established Socket Fr2 platform.

The dual-channel DDR2 memory bus with 10.7 GB/s bandwidth bounds memory throughput, so memory-heavy jobs would be limited by that interface. The 2 MB shared L3 gives all 4 cores a common pool for shared data. The 64 KB L1 and 512 KB L2 per core are the private caches available for per-thread working sets. For single-threaded server requests, the 2.40 GHz base clock is the frequency the data provides; there is no boost clock to call on. For multi-threaded server workloads, exactly 4 threads can run concurrently, and no logical-thread feature beyond those 4 threads is listed.

Gaming workloads have no recorded scores in this database, so gaming suitability cannot be established from this record. Content creation and rendering workloads also lack benchmark scores; 4 threads and no boost clock are the only relevant frequency and parallelism data. Office-style workloads have no scores either. The most defensible use case is a server/workstation role on Socket Fr2 where ECC DDR2, a 2 MB shared L3, and a 119 W thermal envelope are acceptable and where workload threading stays at or below 4 threads.

FAQ

Q: What socket does the AMD Opteron 8358 SE (B3) use?

A: It uses AMD Socket Fr2.

Q: How many cores and threads are listed?

A: It has 4 cores and 4 threads.

Q: Does it support ECC memory?

A: Yes, ECC memory support is listed as true. The memory type is DDR2 and depends on the motherboard.

Q: What is the memory bandwidth?

A: The memory bus is dual-channel, and the listed bandwidth is 10.7 GB/s.

Q: Does the processor have a boost clock?

A: No boost clock is listed; the base clock is 2.40 GHz.

Q: Is the multiplier unlocked?

A: No, the multiplier unlocked field is false.

Power and Thermals

The TDP is 119 W. That is the only thermal envelope number in the record. On a 65 nm process with 463 million transistors and a 285 mm² die, the thermal density is concentrated on one processor package. The absence of a boost clock means the 2.40 GHz base clock is the only frequency the thermal solution must sustain according to the data.

A cooling solution should be selected for a 119 W-class socket, and the record provides no idle power, operating temperature, or cooler compatibility data. The 4-core/4-thread design spreads load across 4 cores on the same die; the 2 MB shared L3 adds a shared cache block on that same 285 mm² die. Since production is end-of-life, thermal validation data is not present in the record. The 119 W TDP is therefore the main quantitative basis for power-oriented decisions, with the 65 nm process and 463 million transistor count as context.

Single-Thread vs Multi-Thread Behavior

The core and thread counts are both 4, so the hardware presents 4 execution threads with no additional logical threads listed. Single-thread behavior is tied to the 2.40 GHz base clock, private 64 KB L1, private 512 KB L2, and access to the 2 MB shared L3. With no boost clock listed, the data does not indicate a frequency uplift when only a single thread is running.

In multi-thread workloads, all 4 cores can operate at the base clock; the locked multiplier means no user-controlled multiplier change is represented. The shared L3 is 2 MB, which can help when all 4 threads access common data, but no benchmark quantifies that effect. The dual-channel DDR2 memory bus at 10.7 GB/s is the memory-side limit for both single-thread and multi-thread activity. Because thread count equals core count, the record does not show any wider thread-parallelism capability. Real workloads that rely on fast single-thread execution will be bounded by the 2.40 GHz ceiling and per-core L2 capacity. Real workloads that split work evenly across threads can use 4 cores, but the data contains no multi-core score to describe scaling efficiency.

Benchmark Performance

The benchmarks array in the FACT PACK is empty. The avgBenchmarkScore is 0. There are no recorded single-thread or multi-thread performance scores. The nearestRivals array is also empty, so no rival names, scores, or deltaPct values exist. Because there are no rival deltas, the analysis cannot provide exact comparison percentages.

The only numerical position indicator is percentileVsAllCpus: 50. This places the Opteron 8358 SE (B3) at the midpoint of the database's CPU ranking. It does not represent a score, and with avgBenchmarkScore at 0 it should not be read as a measured result. If benchmark entries were added, the nearestRivals field would supply the deltaPct values needed to discuss performance against named processors. In the current record, the benchmark performance section is defined by the absence of measurements rather than by scores.