AMD FX-8120

The AMD FX-8120 is an eight-core desktop processor from AMD’s Bulldozer architecture, codenamed Zambezi, released on October 11, 2011. It operates at a base clock of 3.10 GHz with a boost clock of 4.00 GHz, fits the AMD Socket AM3+, and carries a TDP of 125 watts. The chip is built on a 32 nm process, features 1,200 million transistors on a 315 mm² die, and includes 384 KB of L1 cache, 8 MB of L2 cache, and 8 MB of shared L3 cache. It supports dual-channel DDR3 memory and PCIe Gen 2, has an unlocked multiplier, and is classified as end-of-life. The processor’s benchmark percentile places it at the 50th percentile among all CPUs, with an average benchmark score of zero in the current data set, and its nearest rivals list is empty, meaning no direct comparison scores are available in the the benchmark database.

How It Compares

The FX-8120’s nearestRivals array is empty in the the benchmark database, so no direct rival names, scores, or deltaPct values are provided for comparison. Consequently, the data set does not include any competitor against which this processor can be positioned, neither in absolute performance nor in percentage deltas. The only positional indicator available is the 50th percentile across all CPUs, which suggests that the FX-8120 sits at the median of the entire benchmark distribution, exactly half of all measured processors score higher, and half score lower. This median standing implies a balanced but not leading performance tier, though without specific rival data, the relative strengths or weaknesses against any particular model cannot be quantified. The absence of nearestRivals means that any statement about competing chips, such as Intel counterparts or other AMD FX series parts, must be avoided, as the the benchmark database does not list them. Benchmark results indicate that the FX-8120 occupies a middle-ground position in the overall market, but its exact peer group remains undefined in this database.

Single-Thread vs Multi-Thread Behavior

The FX-8120 provides 8 cores and 8 threads, with a base clock of 3.10 GHz and a boost clock of 4.00 GHz, a 0.90 GHz difference between the two frequencies. This boost behavior is typical of a design that raises clock speed when fewer cores are active, which directly impacts single-thread performance. In single-threaded workloads, the processor can reach the 4.00 GHz boost, yielding higher per-core throughput than the sustained 3.10 GHz all-core state. Multi-threaded workloads, however, tend to push all eight cores simultaneously, which often results in the base clock or a lower boost, depending on power and thermal limits within the 125 W TDP envelope. The data shows that the 8-core/8-thread configuration is suited for parallel tasks, but the clock drop from boost to base under full load means that multi-thread scaling is not linear, doubling core count does not double performance. For real-world workloads, this split implies that lightly threaded applications, such as older games or single-threaded productivity tools, will benefit from the 4.00 GHz boost, while heavily threaded rendering, encoding, or scientific simulations will rely on the aggregate throughput of eight cores at a lower frequency. The lack of simultaneous multi-threading (SMT), since threads equal cores, means that the processor cannot extract additional parallelism from software that expects more threads than physical cores, but it also avoids the overhead that SMT can introduce. Benchmark percentile data does not separate single- and multi-thread scores, so the exact magnitude of the single-thread advantage cannot be quantified here. Still, the clock architecture suggests that single-thread responsiveness is a key design point, while multi-thread performance is dependent on how well the workload uses all eight cores without exceeding thermal or power constraints.

Power and Thermals

The FX-8120 carries a TDP of 125 watts, which classifies it as a high-power desktop processor. This TDP figure directly informs the cooling tier required: a 125 W part needs a capable air cooler or a liquid cooling solution to maintain sustained boost clocks without thermal throttling. The 32 nm process node, with 1,200 million transistors on a 315 mm² die, means that power density is notable, but the 125 W envelope is the only thermal metric provided in the the benchmark database. The processor’s boost clock of 4.00 GHz versus the base of 3.10 GHz indicates that thermal headroom is used for short bursts, but under sustained all-core loads, the chip will likely settle closer to the base clock to stay within the 125 W TDP. The socket is AMD Socket AM3+, which typically pairs with motherboards that have robust power delivery for high-TDP CPUs, but no specific cooler or motherboard requirements are listed. The absence of a launch MSRP means no cost-based cooling tier can be inferred, but the 125 W TDP is sufficient to state that users should not rely on a stock slim cooler, a mid-tower chassis with good airflow and a tower-style air cooler or an all-in-one liquid cooler would be appropriate. Since the process node is 32 nm, older lithography tends to have higher leakage at higher clocks, which further reinforces the need for adequate cooling. The data does not include any thermal measurements (e.g., temperatures under load), so only the TDP class can be analyzed. In summary, the 125 W TDP places the FX-8120 in the upper tier of air-cooling capability, but not so extreme as to require exotic cooling methods.

FAQ

Q: How many cores and threads does the AMD FX-8120 have?

A: The FX-8120 has 8 cores and 8 threads, meaning each core handles exactly one thread.

Q: What are the base and boost clock speeds?

A: The base clock is 3.10 GHz, and the boost clock is 4.00 GHz, providing a 0.90 GHz uplift under boost conditions.

Q: What is the TDP of this processor?

A: The TDP is 125 watts, which indicates the maximum power dissipation under typical sustained loads.

Q: Does the FX-8120 support ECC memory?

A: No, ECC memory is not supported, according to the the benchmark database.

Q: What socket does the FX-8120 use?

A: It uses AMD Socket AM3+.

Q: Is the multiplier unlocked?

A: Yes, the multiplier is unlocked, allowing for overclocking if the motherboard and cooling support it.

Q: What is the process node and die size?

A: The process node is 32 nm, and the die size is 315 mm², with 1,200 million transistors.

Q: Does the FX-8120 have integrated graphics?

A: Integrated graphics are available only on certain motherboards as a chipset feature, not on the CPU itself.

Benchmark Performance

The the benchmark database lists the FX-8120’s percentileVsAllCpus as 50, while its avgBenchmarkScore is 0 and benchmarks array is empty. This means that no actual benchmark scores are provided, so the processor’s performance cannot be quantified in absolute terms (e.g., points or frames per second). The 50th percentile is the sole performance indicator, and it indicates that the FX-8120 ranks exactly in the middle of all CPUs in the database, 50% of processors are faster, and 50% are slower. This is a stark contrast to what one might expect from an 8-core part, but without real scores, the percentile is the only anchor. The nearestRivals list is empty, which means there are no deltaPct values to compare against specific competitors. Consequently, statements like “30% ahead of rival X in multi-core” are impossible to make, as no rival data exists. The average benchmark score of zero further complicates any analysis, as it suggests that the processor has not been benchmarked in this database, or the score has been normalized to zero for unknown reasons. Given the 50th percentile, one can infer that the FX-8120’s performance is neither outstanding nor poor, it is a median performer. In multi-threaded workloads, the 8-core/8-thread design should theoretically provide strong parallel throughput, but the lack of SMT and the reliance on the 3.10 GHz base under full load likely cap its multi-core scalability. In single-threaded tasks, the 4.00 GHz boost helps, but the Bulldozer architecture is not known for high per-core efficiency, though this is not directly stated in the the benchmark database. Without deltaPct values, the exact percentage differences from rivals cannot be cited. The data shows that the FX-8120 is a mid-tier processor by percentile, but its real-world performance depends heavily on workload type, all-core tasks may benefit from the eight cores, while single-thread performance is limited to the boost clock. The empty benchmarks array means that no validation of these hypotheses is possible from the the benchmark database alone. Therefore, the only concrete benchmark statement is the 50th percentile, which places it at the median of the database’s CPU population.