AMD® FX™-8120

The AMD FX-8120 is a desktop processor with 8 cores and 8 threads, built on the Bulldozer architecture. It launched in Oct 2011. Clocks run from 3.1 GHz base to 4.0 GHz boost. A 8-MB L3 cache backs the cores (2.0 MB per core). It uses the AM3+ socket. Rated TDP is 125 W.

The AMD FX-8120 scores 1,334 in single-core performance and 4,643 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 2,489 for overall performance, 4,886 for productivity performance, 4,955 for creator performance, 4,759 for engineering performance and 5,163 for gaming performance. Its multi-core throughput works out to 580 per core, 580 per thread and 37 per watt. Its computed efficiency index is 223. Its performance index is 31, so its overall performance is 69% below the Intel Core i5-12400 (index 100). Each bar shows the score as a share of a reference ceiling, which is the larger of the 99th-percentile score across the Feex CPU database and a fixed baseline.

Scores for individual PassMark CPU Mark test categories. Higher is better. These are measured test scores, not computed from the single-core and multi-core ratings.

In the individual workload tests the AMD FX-8120 scores 17,469 in integer math, 8,695 in floating-point math, 77,799 in compression, 1,470 in cryptography, 425 in physics simulation, 2,347 in vector SIMD, 26 in the prime sieve and 10,169 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 70% below in integer math, 81% below in floating-point math, 66% below in compression, 87% below in cryptography, 61% below in physics simulation, 85% below in vector SIMD, 61% below in the prime sieve and 55% below in sorting. Each bar shows the score as a share of that workload's reference ceiling, the larger of the 99th-percentile score across CPUs with a recorded value and a fixed baseline.

The AMD FX-8120 has 8 physical cores and runs 8 logical threads. It does not use a hybrid performance and efficiency core layout. It does not support simultaneous multithreading, so its thread count equals its core count. It runs at a base clock of 3.10 GHz and boosts up to 4.00 GHz.

The AMD FX-8120 is a desktop processor, belongs to the AMD FX family, uses the Bulldozer architecture, carries the codename Zambezi and is manufactured on a 32 nm process. It launched in Oct 2011.

The AMD FX-8120 has 384 KB of L1 cache, 8 MB of L2 cache and 8 MB of L3 cache. That adds up to about 16.4 MB of cache, or 2.05 MB per core.

The AMD FX-8120 has a 3-level cache hierarchy: L1 at 384 KB, L2 at 8 MB and L3 at 8 MB. L2 is the largest level and makes up about 49% of the cache listed here.

The AMD FX-8120 uses the AM3+ socket.

The AMD FX-8120 has a rated TDP of 125 W.

Instruction sets, security, virtualization, AI acceleration and OS readiness. Features are listed as supported, explicitly not supported, or not recorded; a feature that is not recorded is not the same as unsupported.

It launched at a price of $205.

After an audit, 2 values were corrected on the AMD FX-8120 record. Each change is listed with its old value, new value, rule and sources.

• Display name: AMD® FX™ -8120 → AMD® FX™-8120. Rule: Cleanup fx hyphen space. stray space between the trademark glyph and the hyphenated model, inserted from the PassMark chart "Updated name" column; model identifier unchanged.
• Normalized name: AMD® FX™ -8120 → AMD® FX™-8120. Rule: Cleanup fx hyphen space. stray space between the trademark glyph and the hyphenated model, inserted from the PassMark chart "Updated name" column; model identifier unchanged.

The audit log is public: all changes for this CPU, the corrections overview and the method.

Feex has recorded 44% of the specifications it tracks for the AMD FX-8120. Values Feex does not hold are shown as "Not recorded" rather than estimated.

Not recorded: Core Configuration: Efficiency Cores, All-Core Boost and Unlocked Multiplier. Architecture & Generation: ISA Family and Market Status. Cache: L2 Cache (per Core) and L4 Cache. Memory Support: Max Memory, Memory Channels, Memory Bandwidth, Memory Types, DDR5 Support, DDR4 Support, LPDDR Support, ECC Memory and Max Memory Speed. Graphics: Integrated Graphics, Graphics Model, Graphics Base Clock, Graphics Max Clock, Execution Units, Display Outputs and Max Video Memory. Platform & Compatibility: Package, Package Size and PCIe Lanes. Power & Thermals: Base Power, Maximum Turbo Power, Configurable TDP (Min), Configurable TDP (Max), Max Junction Temperature and Tcase. Physical & Manufacturing: Transistor Count, Die Size, Die Count and Foundry. Naming & Aliases: SKU, Model Number, Processor Number and Part Number.

Processors that use the same AM3+ socket as the AMD FX-8120 and have the closest multi-core scores in the Feex database include AMD FX-6350, AMD FX-6330, AMD FX-8140, AMD Opteron 3380 and AMD FX-6130.