AMD Ryzen 9 7950X3D vs Intel Core Ultra 9 275HX Comparison

# Intel Core Ultra 9 275HX vs AMD Ryzen 9 7950X3D

The data presents a clear contrast: the AMD Ryzen 9 7950X3D wins 11 of the 17 head-to-head benchmarks, while the Intel Core Ultra 9 275HX takes 6. Yet the Intel chip’s victories are often dramatic — a 46.6% lead in floating-point math and a 13.7% edge in single-threaded PassMark — while AMD’s wins are more frequent but sometimes narrower. The Ryzen 9 7950X3D also holds a higher average benchmark score (65,914 vs 67,469 for Intel, though that Intel figure is inflated by its PassMark data compression score of 608,381). Both sit near the top of the database, with the Intel at the 94th percentile and AMD at the 93rd. This is not a simple “one is better” story; it is a story about workload-specific strengths.

The Verdict

From the head-to-head data, the AMD Ryzen 9 7950X3D is the default choice for multi-threaded productivity. It leads in Cinebench R15 multi-core by 5.9% (5,974 vs 5,619.5), in Cinebench R23 multi-core by 1.9% (36,291 vs 35,589), and in Geekbench multi-core by 7% (22,363 vs 20,795). The PassMark multi-thread test shows a 10.6% AMD advantage (62,383 vs 55,759). For integer-heavy workloads, AMD is decisively ahead: 27.5% in integer math (214,089 vs 155,218), 22.5% in data compression (784,993 vs 608,381), and 19.9% in random string sorting (92,784 vs 74,320). The AMD chip also dominates in physics simulation, with a 33.9% lead (5,053 vs 3,338). If the workload is about raw computing throughput across many threads, the 7950X3D is the one to pick.

The Intel Core Ultra 9 275HX, however, is the pick for single-thread performance and floating-point math. It wins Cinebench R23 single-core by 7.4% (2,204 vs 2,053), PassMark single-thread by 13.7% (4,713 vs 4,146), and Cinebench R15 single-core by 2.5% (334 vs 326). Its floating-point math score of 191,186 is a staggering 46.6% higher than AMD’s 130,403 — the largest delta in the entire comparison. Data encryption is a virtual tie (47,112 vs 47,100, a 0% delta), but Intel edges it. The Geekbench single-core result favors AMD by 3.5% (2,548 vs 2,458), which complicates the single-thread story, but the PassMark and Cinebench single-thread wins are consistent. For scientific computing, financial modeling, or any workload dominated by floating-point operations, the Intel chip is the clear choice.

The verdict from the data: AMD Ryzen 9 7950X3D for multi-threaded generalists, Intel Core Ultra 9 275HX for floating-point specialists and single-thread-sensitive tasks. There is no universal winner.

Architecture Differences

The two processors are built on fundamentally different design philosophies. The Intel Core Ultra 9 275HX uses Arrow Lake architecture on a 3 nm process from TSMC, with 24 cores and 24 threads — no hyperthreading. The AMD Ryzen 9 7950X3D uses Zen 4 architecture on a 5 nm process, also from TSMC, with 16 cores and 32 threads. Intel’s die is 243 mm² with 17,800 million transistors; AMD’s is two 71 mm² dies with 17,840 million transistors total. AMD’s key differentiator is the 3D V-Cache: a 1x 64MB slice on top of a 128 MB shared L3 cache. Intel offers 36 MB of shared L3. AMD’s L1 is 64 KB per core and L2 is 1 MB per core; Intel’s is 192 KB per core and 3 MB per core. The cache architecture explains AMD’s data compression and integer math wins — larger pools of fast memory reduce latency.

Process node differences: Intel is on 3 nm, AMD on 5 nm. This likely contributes to Intel’s power efficiency, as reflected in its 55 W TDP versus AMD’s 120 W TDP. But the TDP differential also reflects market segment: Intel is a mobile chip (BGA 2114 socket), AMD is desktop (AM5). Intel’s memory bandwidth is higher at 102.4 GB/s versus AMD’s 83.2 GB/s, though both use dual-channel DDR5. Intel’s integrated graphics are Arc Xe-LPG with 64 EU; AMD’s is Radeon Graphics. AMD supports ECC memory; Intel does not. Intel has 20 Gen 5 PCIe lanes (CPU only), AMD has 24. Both have unlocked multipliers. AMD’s release date is January 2023; Intel’s is January 2025.

The transistor counts are nearly identical (17,800M vs 17,840M), but Intel packs them into a single 243 mm² die while AMD splits across two 71 mm² dies. This structural difference, plus the 3D V-Cache, explains why AMD achieves more multi-threaded throughput with fewer cores (16 vs 24) — the cache hierarchy is more efficient for certain workloads.

FAQ

Q: Which chip has more cores and threads?

A: The Intel Core Ultra 9 275HX has 24 cores and 24 threads. The AMD Ryzen 9 7950X3D has 16 cores and 32 threads. Despite fewer cores, AMD wins most multi-threaded benchmarks, suggesting its cache and SMT design compensate.

Q: Why does the Intel chip win floating-point math by such a large margin?

A: The PassMark floating-point math score shows Intel at 191,186 versus AMD’s 130,403 — a 46.6% difference. The data does not specify a single cause, but the 3 nm process and 3 MB per-core L2 cache likely contribute to higher per-core FP throughput.

Q: Which processor is better for gaming?

A: The data does not include gaming benchmarks. However, AMD’s 3D V-Cache (1x 64MB slice plus 128 MB L3) and its wins in random string sorting (92,784 vs 74,320) suggest strong performance in latency-sensitive tasks. Intel’s single-thread wins (13.7% in PassMark single-thread) could also help. No definitive gaming verdict is possible from this data.

Q: What is the average benchmark score difference?

A: Intel’s average benchmark score is 67,469, placing it at the 94th percentile. AMD’s is 65,914, at the 93rd percentile. Intel is 1.5 points higher in percentile ranking, but AMD wins more head-to-head matchups.

Q: Which chip has higher memory bandwidth?

A: Intel lists 102.4 GB/s; AMD lists 83.2 GB/s. Intel has a 23% bandwidth advantage, yet AMD wins in data compression by 22.5%. This implies AMD’s cache architecture is more impactful than raw memory bandwidth for those workloads.

Q: Are both processors currently in production?

A: Yes, both have a production status of “Active.” Intel’s release date is January 12, 2025; AMD’s is January 3, 2023.

Specification Differences

| Field | Intel Core Ultra 9 275HX | AMD Ryzen 9 7950X3D |

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

| Series | Core Ultra Series 2 | 7000 series |

| Cores | 24 | 16 |

| Threads | 24 | 32 |

| Base Clock | 2.70 GHz | 4.20 GHz |

| Boost Clock | 5.40 GHz | 5.70 GHz |

| TDP | 55 W | 120 W |

| Socket | Intel BGA 2114 | AMD Socket AM5 |

| Architecture | Arrow Lake | Zen 4 |

| Process Node | 3 nm | 5 nm |

| Die Size | 243 mm² | 2x 71 mm² |

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

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

| L3 Cache | 36 MB (shared) | 128 MB (shared) |

| 3D V-Cache | None | 1x 64MB Slice |

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

| ECC Memory | No | Yes |

| PCIe | Gen 5, 20 Lanes | Gen 5, 24 Lanes |

| Integrated Graphics | Arc Xe-LPG 64EU | Radeon Graphics |

| Market Segment | Mobile | Desktop |

| Release Date | 2025-01-12 | 2023-01-03 |

| Launch MSRP | None listed | $699 |

| Part Number | SRVFK | 100-000000908 |

Head-to-Head Benchmarks

The biggest win for Intel is in PassMark floating-point math: 191,186 vs 130,403, a 46.6% advantage. This is a massive outlier — no other benchmark comes close to that delta. Intel also wins PassMark single-thread by 13.7% (4,713 vs 4,146) and Cinebench R23 single-core by 7.4% (2,204 vs 2,053). Cinebench R15 single-core goes to Intel by 2.5% (334 vs 326). Data encryption is a near-perfect tie, with Intel at 47,112 and AMD at 47,100 (0% delta).

AMD’s biggest win is in PassMark integer math: 214,089 vs 155,218, a 27.5% margin. Data compression goes to AMD by 22.5% (784,993 vs 608,381). Random string sorting favors AMD by 19.9% (92,784 vs 74,320). Extended instructions: AMD wins by 19.7% (58,515 vs 47,016). Physics: AMD by 33.9% (5,053 vs 3,338). Multi-thread: AMD by 10.6% (62,383 vs 55,759). Geekbench multi-core: AMD by 7% (22,363 vs 20,795). Cinebench R15 multi-core: AMD by 5.9% (5,974 vs 5,619.5). Find prime numbers: AMD by 9.5% (495 vs 448). Cinebench R23 multi-core: AMD by 1.9% (36,291 vs 35,589). Geekbench single-core: AMD by 3.5% (2,548 vs 2,458).

The pattern is striking: AMD wins almost every integer, encryption-adjacent, and multi-threaded test, while Intel wins all floating-point and single-thread tests except Geekbench single-core. The 46.6% floating-point delta is so large that it skews Intel’s average score upward, but it does not translate into wins elsewhere.

Where Each One Wins

Intel Core Ultra 9 275HX wins are concentrated in three areas: floating-point math (46.6% lead, 191,186 vs 130,403), single-thread performance (13.7% in PassMark, 7.4% in Cinebench R23), and data encryption (essentially tied at 47,112 vs 47,100, but a win). The Cinebench R15 single-core win (334 vs 326) adds to this. Use cases: scientific simulations, financial risk calculations, 3D rendering that relies on FP operations, and any single-thread-bound application like older game engines or legacy database queries. The 55 W TDP and mobile socket also make it suitable for high-performance laptops.

AMD Ryzen 9 7950X3D wins are everywhere else: integer math (27.5%), data compression (22.5%), random string sorting (19.9%), extended instructions (19.7%), physics (33.9%), multi-thread (10.6%), and both Cinebench and Geekbench multi-core tests. Use cases: video encoding, database workloads, compression/decompression (e.g., backups, file transfers), code compilation, and any heavily threaded productivity suite. The 128 MB L3 cache and 3D V-Cache slice are likely why it excels at data-compression and random-access patterns. Physics simulation (5,053 vs 3,338) suggests strong gaming-adjacent performance for physics engines.

The split is clean: AMD for throughput and cache-friendly workloads, Intel for FP-heavy and single-thread tasks. Neither chip is a general-purpose king; the data says pick based on your dominant workload.