AMD Athlon PRO 300U vs Intel Core i5-2500 Comparison

Head-to-Head Benchmarks

The benchmark results for the Intel Core i5-2500 and AMD Athlon PRO 300U are remarkably close, with the Intel part taking a narrow win in every recorded test. The largest margin is in Cinebench R20 single-core, where the i5-2500 scores 206 against the Athlon PRO 300U's 205, a 0.5% advantage. That is essentially a dead heat in single-threaded performance, and it means the two processors are interchangeable for lightly threaded tasks like everyday desktop responsiveness or older games that rely on one or two cores.

Multi-core results tell the same story. In Cinebench R15 multi-core, the i5-2500 scores 350 while the Athlon PRO 300U scores 349, a 0.3% difference. Cinebench R20 multi-core shows 1461 versus 1456, again a 0.3% gap. Cinebench R23 multi-core has the i5-2500 at 3479 and the Athlon PRO 300U at 3468, also 0.3% apart. The pattern is consistent: the Intel chip wins, but the margin is so small that it falls within run-to-run noise on most test benches. The database's average benchmark scores reflect this near-equality, with the i5-2500 averaging 1220 and the Athlon PRO 300U averaging 1193.

The i5-2500 also takes the single-core Cinebench R23 test with 491 against 489, a 0.4% edge. Across all five head-to-head tests, the Intel part wins five, the AMD part wins zero, yet the largest delta is only 0.5%. In practical terms, the data says these CPUs are performance peers in the workloads captured by these benchmarks, with the i5-2500 holding a slight but consistent statistical edge.

The Athlon PRO 300U was not recorded in the Geekbench tests, while the i5-2500 posts scores of 1883 in Geekbench multi-core and 670 in single-core. That absence limits direct comparison in that suite, but the Cinebench results provide enough coverage to characterize both parts.

Architecture Differences

The two processors come from different eras and design philosophies. The Intel Core i5-2500 uses the Sandy Bridge architecture on a 32 nm process from Intel, with a die size of 216 mm² and 1,160 million transistors. It is a desktop part, released on January 8, 2011, and is now end-of-life. The AMD Athlon PRO 300U uses the Zen architecture, specifically the Raven Ridge 2 codename, on a 14 nm process from GlobalFoundries, with no die size or transistor count recorded in the database. It is a mobile part, released on April 7, 2019, and remains an active product.

Core counts differ significantly. The i5-2500 has 4 cores and 4 threads, while the Athlon PRO 300U has 2 cores and 4 threads thanks to simultaneous multithreading. Despite having half the physical cores, the AMD chip matches the Intel part in multi-threaded benchmarks, which indicates the Zen architecture's efficiency advantage per core. The i5-2500 compensates with higher clock speeds: 3.30 GHz base and 3.70 GHz boost, versus 2.40 GHz base and 3.30 GHz boost for the Athlon PRO 300U.

Cache layouts are also different. The i5-2500 has 64 KB of L1 per core, 256 KB of L2 per core, and 6 MB of shared L3. The Athlon PRO 300U has 128 KB of L1 per core, 512 KB of L2 per core, and 4 MB of shared L3. The AMD part has larger per-core caches, which helps it keep up with the Intel chip despite lower clocks and fewer physical cores.

Memory support splits along generational lines. The i5-2500 uses DDR3 in a dual-channel configuration, while the Athlon PRO 300U uses DDR4 in dual-channel. Neither supports ECC memory. The Intel chip has PCIe Gen 3 with 16 lanes from the CPU, while the database records no PCIe information for the AMD part.

Integrated graphics also differ. The i5-2500 carries Intel HD 2000, while the Athlon PRO 300U carries Radeon Vega 3. The database does not include graphics benchmarks, so any comparison of iGPU performance is not possible from this data. Power consumption is a major differentiator: the i5-2500 has a 95 W TDP, while the Athlon PRO 300U is rated at 15 W, a 6.3x difference in thermal design point.

The Verdict

The data paints a clear picture: choose the Intel Core i5-2500 if you want a desktop processor with a slight edge in every recorded benchmark, and choose the AMD Athlon PRO 300U if you need a low-power mobile chip with comparable performance. The i5-2500 wins all five head-to-head tests, but the margins are tiny, ranging from 0.3% to 0.5%. The Athlon PRO 300U matches that performance while consuming 15 W versus 95 W, which makes it the obvious choice for laptops, compact systems, or any build where heat and power draw matter more than a fractional benchmark lead.

The i5-2500 is a 4-core, 4-thread desktop part with a 3.30 GHz base and 3.70 GHz boost clock. The Athlon PRO 300U is a 2-core, 4-thread mobile part with a 2.40 GHz base and 3.30 GHz boost clock. The fact that these two achieve nearly identical scores despite such different specifications is the key takeaway. The Zen architecture in the AMD chip delivers much higher performance per clock and per watt, while the older Sandy Bridge design relies on higher clocks and additional physical cores to stay competitive.

For a user building a desktop with an existing LGA 1155 motherboard and DDR3 memory, the i5-2500 is the drop-in choice. For someone selecting a chip for a thin-and-light laptop or a fanless or low-noise system, the Athlon PRO 300U is the only sensible option, as the i5-2500's 95 W TDP is not suited to that class of machine. The percentiles in the database reinforce the close match: the i5-2500 sits at the 34th percentile among all CPUs, while the Athlon PRO 300U sits at the 33rd.

Specification Differences

The table below lists only the fields where the two processors differ in the database.

| Field | Intel Core i5-2500 | AMD Athlon PRO 300U |

|---|---|---|

| Manufacturer | Intel | AMD |

| Cores | 4 | 2 |

| Threads | 4 | 4 |

| Base clock | 3.30 GHz | 2.40 GHz |

| Boost clock | 3.70 GHz | 3.30 GHz |

| TDP | 95 W | 15 W |

| Socket | Intel Socket 1155 | AMD Socket FP5 |

| Architecture | Sandy Bridge | Zen |

| Codename | Sandy Bridge | Raven Ridge 2 |

| Generation | Core i5 (Sandy Bridge) | Athlon (Zen (Raven Ridge 2)) |

| Process node | 32 nm | 14 nm |

| Foundry | Intel | GlobalFoundries |

| Transistors | 1,160 million | Not recorded |

| Die size | 216 mm² | Not recorded |

| L1 cache | 64 KB per core | 128 KB per core |

| L2 cache | 256 KB per core | 512 KB per core |

| L3 cache | 6 MB shared | 4 MB shared |

| Memory support | DDR3 | DDR4 |

| PCIe | Gen 3, 16 lanes (CPU only) | Not recorded |

| Integrated graphics | Intel HD 2000 | Radeon Vega 3 |

| Market segment | Desktop | Mobile |

| Production status | End-of-life | Active |

| Release date | 2011-01-08 | 2019-04-07 |

| Part number | SR00T | Not recorded |

FAQ

Q: Which processor is faster in multi-core workloads?

A: The Intel Core i5-2500 wins every multi-core benchmark in the database, but by narrow margins. It scores 350 versus 349 in Cinebench R15, 1461 versus 1456 in Cinebench R20, and 3479 versus 3468 in Cinebench R23, all deltas of 0.3%.

Q: How does the single-core performance compare?

A: The i5-2500 also leads in single-core tests. It scores 206 versus 205 in Cinebench R20 single-core (0.5% ahead) and 491 versus 489 in Cinebench R23 single-core (0.4% ahead).

Q: Why does a 2-core chip match a 4-core chip in performance?

A: The Athlon PRO 300U has 4 threads through simultaneous multithreading, larger L1 and L2 caches per core, and a newer 14 nm Zen architecture. It runs at much lower clock speeds, 2.40 GHz base and 3.30 GHz boost, but achieves nearly identical scores to the 3.30/3.70 GHz Sandy Bridge part.

Q: Can the AMD Athlon PRO 300U be used in a desktop motherboard?

A: No. The database lists the Athlon PRO 300U as a mobile processor with the AMD Socket FP5, while the i5-2500 uses Intel Socket 1155 for desktop boards. These are not interchangeable platforms.

Q: Which processor has better integrated graphics?

A: The database does not include graphics benchmarks, so a direct comparison is not possible. The i5-2500 has Intel HD 2000, while the Athlon PRO 300U has Radeon Vega 3, but no performance data is recorded for either.

Q: What is the average benchmark score for each processor?

A: The i5-2500 has an average benchmark score of 1220, placing it at the 34th percentile of all CPUs. The Athlon PRO 300U has an average score of 1193, at the 33rd percentile.

Where Each One Wins

The Intel Core i5-2500 wins on raw benchmark scores across the board. It takes all five head-to-head tests, including multi-core and single-core variants of Cinebench. Its advantage is consistent but small, so the win matters most for users who need every last point in a benchmark, such as competitive overclocking on legacy platforms or squeezing maximum performance out of an old LGA 1155 system. The 95 W TDP and desktop socket make it suited to builds where power consumption is not a concern.

The AMD Athlon PRO 300U wins on efficiency and platform fit. Its 15 W TDP is 80 W lower than the i5-2500, making it the only choice for passive cooling, laptop integration, or small-form-factor systems where heat dissipation is limited. It also uses DDR4 memory, which is more modern and widely available than the DDR3 required by the i5-2500. The 14 nm process from GlobalFoundries gives it a much smaller manufacturing footprint per transistor, and its active production status means it is still available for new designs, unlike the end-of-life i5-2500.

The use-case split is straightforward. If the goal is maximum benchmark score on a desktop platform, the i5-2500 is the winner, even if only by 0.3% to 0.5%. If the goal is a mobile or low-power system with performance that is statistically indistinguishable from the i5-2500, the Athlon PRO 300U is the clear pick. The data does not support calling either chip a dominant winner; it supports calling the i5-2500 the benchmark leader and the Athlon PRO 300U the efficiency leader.