AMD Ryzen 5 7500X3D vs Intel Core Ultra 5 245KF Comparison

Head-to-Head Benchmarks

The recorded data leaves no ambiguity about the performance relationship between these two desktop processors. The Intel Core Ultra 5 245KF wins every single head-to-head benchmark in the database, taking 11 of 11 tests outright. The AMD Ryzen 5 7500X3D records zero wins in these direct comparisons.

The most lopsided result appears in floating-point math. The Intel part scores 131,546 against the AMD chip's 43,594, a deficit of 66.9% for the Ryzen. That is the largest margin in the entire comparison. The gap stems from the Intel's higher core count and the nature of floating-point workloads, which scale well across multiple execution units.

Integer math tells a closer story. The Intel Core Ultra 5 245KF scores 98,854, while the AMD Ryzen 5 7500X3D scores 70,774. That is a 28.4% advantage for Intel, the smallest percentage gap of any test in the set. The Ryzen's 3D V-Cache helps here, but the Intel's 14 cores still pull ahead.

Memory-sensitive workloads show a clear pattern. Data compression favors the Intel part at 460,123 versus 271,649, a 41% edge. Random string sorting goes to Intel at 55,206 versus 32,999, a 40.2% margin. Data encryption is even more decisive: Intel scores 33,381 against AMD's 15,797, a 52.7% difference. The Intel's higher memory bandwidth of 102.4 GB/s versus 83.2 GB/s likely contributes to these results.

Multithreaded and single-threaded performance both favor Intel. The PassMark multithread score is 43,110 for Intel versus 25,047 for AMD, a 41.9% gap. Single-thread performance shows 4,715 for Intel versus 3,494 for AMD, a 25.9% difference. The physics test is the closest of all: Intel scores 2,998, AMD scores 2,779, a mere 7.3% separation.

Prime number finding also goes to Intel, 416 versus 221, a 46.9% margin. Extended instructions favor Intel at 37,912 versus 20,455, a 46% gap. The average benchmark score tells the same story: Intel sits at 55,093, AMD at 44,573. The Intel part ranks in the 91st percentile of all CPUs in the database, while the AMD part sits in the 89th percentile.

Architecture Differences

The two processors come from different design philosophies. The AMD Ryzen 5 7500X3D uses the Raphael codename, part of the Zen 4 generation built on TSMC's 5 nm process. It packs 11,270 million transistors into a 71 mm² die. The Intel Core Ultra 5 245KF uses the Arrow Lake-S codename, part of the Arrow Lake architecture, built on a more advanced 3 nm TSMC node. It contains 17,800 million transistors across a 243 mm² die.

Core counts diverge sharply. The AMD chip has 6 cores and 12 threads, relying on simultaneous multithreading to double its thread count. The Intel chip has 14 cores and 14 threads, with no hyperthreading on any core. That raw core advantage explains much of the Intel's multithreaded lead.

Cache hierarchies differ in both size and layout. The AMD Ryzen 5 7500X3D has 64 KB of L1 per core, 1 MB of L2 per core, and a massive 96 MB of shared L3 cache. That 96 MB pool is the signature feature of AMD's X3D parts, designed to keep frequently accessed data close to the cores. The Intel Core Ultra 5 245KF has 192 KB of L1 per core, 3 MB of L2 per core, and only 24 MB of shared L3. The Intel's L3 is a quarter of the AMD's capacity, yet the benchmark data shows Intel still wins cache-sensitive workloads like data compression and random string sorting.

Memory support matches on the surface: both use DDR5 with dual-channel buses. But the Intel part has a higher theoretical memory bandwidth at 102.4 GB/s versus 83.2 GB/s for AMD. The AMD chip supports ECC memory; the Intel chip does not. Both use PCIe Gen 5, but AMD provides 24 lanes while Intel provides 20.

Integrated graphics differ as well. The AMD Ryzen 5 7500X3D includes Radeon Graphics, while the Intel Core Ultra 5 245KF has no integrated graphics at all. The Intel KF suffix indicates a graphics-disabled chip. The AMD part also has a locked multiplier; the Intel part is unlocked for overclocking.

Clock speeds favor Intel on paper. The Intel boosts to 5.20 GHz against AMD's 4.50 GHz, and its base clock runs at 4.20 GHz versus 4.00 GHz. Power targets diverge: the Intel part carries a 125 W TDP, the AMD part a 65 W TDP. That lower power draw is a point in AMD's favor for builds where thermals and energy use matter more than raw performance.

FAQ

Q: Which processor is faster in single-threaded workloads?

A: The Intel Core Ultra 5 245KF scores 4,715 in PassMark single-threaded tests, while the AMD Ryzen 5 7500X3D scores 3,494. That gives Intel a 25.9% advantage.

Q: Does the AMD Ryzen 5 7500X3D win any benchmark in the head-to-head comparison?

A: No. The database shows zero wins for AMD across all 11 recorded tests. The Intel Core Ultra 5 245KF wins every one, with margins ranging from 7.3% in physics to 66.9% in floating-point math.

Q: How do the cache sizes compare?

A: The AMD chip has 64 KB of L1 per core, 1 MB of L2 per core, and 96 MB of shared L3. The Intel chip has 192 KB of L1 per core, 3 MB of L2 per core, and 24 MB of shared L3. Despite the AMD's larger L3, Intel wins the cache-sensitive tests in the database.

Q: What is the difference in power consumption?

A: The AMD Ryzen 5 7500X3D has a TDP of 65 W. The Intel Core Ultra 5 245KF has a TDP of 125 W. The AMD part draws far less power, which is reflected in its lower heat output.

Q: Do both processors support DDR5 memory?

A: Yes, both support DDR5 with dual-channel memory buses. The Intel part has a higher rated memory bandwidth at 102.4 GB/s, while the AMD part is rated at 83.2 GB/s. Additionally, the AMD chip supports ECC memory, but the Intel chip does not.

Q: Which processor has integrated graphics?

A: The AMD Ryzen 5 7500X3D includes Radeon Graphics. The Intel Core Ultra 5 245KF has no integrated graphics, as indicated by the KF suffix.

The Verdict

The benchmark data points to a clear winner for raw performance: the Intel Core Ultra 5 245KF. It wins every head-to-head test in the database, with advantages ranging from modest to overwhelming. Its 14 cores deliver a 41.9% higher multithreaded score, and its single-thread performance leads by 25.9%. The Intel part also ranks higher in the overall database percentile at 91 versus 89 for AMD.

The AMD Ryzen 5 7500X3D does have legitimate strengths, but they do not show up in the head-to-head benchmark results. Its 96 MB of L3 cache does not translate into wins on the recorded tests. Its 65 W TDP makes it a more power-efficient choice, and its Radeon integrated graphics allow a system to operate without a discrete GPU. It also supports ECC memory, which matters for certain workstation scenarios.

For anyone prioritizing maximum throughput in multi-threaded tasks, compression, encryption, and math-heavy workloads, the Intel Core Ultra 5 245KF is the logical pick. The data shows no scenario in which the AMD chip outperforms it. For builders who want lower power draw, integrated graphics, and ECC support, the AMD part serves those specific needs, but not at the cost of winning any benchmark comparison.

Specification Differences

| Specification | AMD Ryzen 5 7500X3D | Intel Core Ultra 5 245KF |

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

| Cores | 6 | 14 |

| Threads | 12 | 14 |

| Base Clock | 4.00 GHz | 4.20 GHz |

| Boost Clock | 4.50 GHz | 5.20 GHz |

| TDP | 65 W | 125 W |

| Process Node | 5 nm | 3 nm |

| Transistors | 11,270 million | 17,800 million |

| Die Size | 71 mm² | 243 mm² |

| L1 Cache | 64 KB (per core) | 192 KB (per core) |

| L2 Cache | 1 MB (per core) | 3 MB (per core) |

| L3 Cache | 96 MB (shared) | 24 MB (shared) |

| Memory Bandwidth | 83.2 GB/s | 102.4 GB/s |

| ECC Memory | Yes | No |

| PCIe Lanes | 24 | 20 |

| Integrated Graphics | Radeon Graphics | N/A |

| Multiplier Unlocked | No | Yes |

| Socket | AMD Socket AM5 | Intel Socket 1851 |

Where Each One Wins

The Intel Core Ultra 5 245KF wins every measured benchmark category. Its strongest edges appear in floating-point math (66.9% ahead), data encryption (52.7% ahead), and extended instructions (46% ahead). These are workloads that benefit from the Intel's 14-core layout and higher clock speeds. Multithreaded applications, data compression, and random string sorting all follow the same pattern, with Intel leading by 40% or more. Even in the closest test, physics, Intel leads by 7.3%.

The AMD Ryzen 5 7500X3D's wins are not in the benchmark scores but in the specification sheet. It draws less power at 65 W TDP versus 125 W, which makes it suitable for compact builds with modest cooling. Its integrated Radeon Graphics provides display output without a discrete GPU, a capability the Intel part lacks entirely. The AMD chip supports ECC memory, which is a requirement in some server and workstation environments. Its 96 MB of L3 cache is the largest of the two, though the recorded benchmarks show that cache advantage does not overcome the Intel's core count and memory bandwidth.

The release timeline also differs. The Intel Core Ultra 5 245KF launched on October 23, 2024, while the AMD Ryzen 5 7500X3D launched over a year later on November 11, 2025. Both processors remain in active production according to the database. The Intel part's launch MSRP is $294, and the AMD part's launch MSRP is $269. Neither part currently has a confirmed unlock for overclocking on the AMD side, while the Intel part has an unlocked multiplier.