AMD Ryzen 9 8945HX vs Intel Xeon 6517P Comparison

The AMD Ryzen 9 8945HX and Intel Xeon 6517P are both 16-core, 32-thread processors that sit at the 96th percentile of all CPUs, yet they target completely different worlds: a low-power mobile chip versus a high-end server part. Their average benchmark scores are nearly identical—AMD at 74,103 and Intel at 73,050, a 1.4% gap—but the distribution of wins tells a more nuanced story. AMD takes 12 of 17 head-to-head benchmarks, while Intel wins 5, often by large margins in specific workloads. This is a clash of design philosophy, not just raw performance.

Head-to-Head Benchmarks

The Cinebench suite is a near-total sweep for AMD. In Cinebench R15, R20, and R23, both multi-core and single-core, AMD leads every time by exactly 1.4% in the multi-core runs and 1.3–1.4% in single-core. For example, Cinebench R23 multi-core scores 42,713 for AMD versus 42,136 for Intel, while single-core is 6,030 against 5,948. These are tight margins, but they are consistent across all six Cinebench tests.

The bigger separations appear in Passmark’s workload-specific tests. AMD’s most dominant wins are in integer math (198,352 vs 163,563, a 21.3% lead) and data encryption (39,600 vs 32,978, a 20.1% lead). Random string sorting also favors AMD by 14.4% (74,420 vs 65,031), and single-thread performance is 13.8% higher (3,963 vs 3,481). These results point to a chip that excels at integer-heavy, encryption-heavy, and single-threaded tasks.

Intel’s wins are equally pronounced but more specialized. The largest is in physics, where the Xeon 6517P scores 3,940 versus AMD’s 2,027—a 48.6% advantage. That is a massive gap, though physics tests often reward memory bandwidth and cache behavior. Intel also leads in find prime numbers by 15.2% (315 vs 267), floating point math by 8% (128,525 vs 118,280), extended instructions by 9% (52,333 vs 47,600), and data compression by 2.8% (665,506 vs 646,896). These are all compute-heavy or memory-sensitive workloads.

The overall picture is that AMD wins the majority of tests, but Intel wins the ones that matter for scientific computing, compression, and physics simulation. The average benchmark score still puts AMD slightly ahead, but the Xeon’s specialized strengths cannot be ignored.

FAQ

Q: Which CPU has higher single-thread performance?

A: The AMD Ryzen 9 8945HX wins in both Cinebench R23 single-core (6,030 vs 5,948, a 1.4% lead) and Passmark single-thread (3,963 vs 3,481, a 13.8% lead). The boost clock of 5.40 GHz versus 4.20 GHz explains part of this.

Q: Does the Intel Xeon 6517P support ECC memory?

A: Yes, ECC memory is supported on the Xeon. The AMD Ryzen 9 8945HX does not support ECC, which is a critical differentiator for server reliability.

Q: What is the memory bandwidth difference?

A: The Xeon 6517P uses an eight-channel DDR5 memory bus with 409.6 GB/s bandwidth, while the AMD chip uses dual-channel DDR5 at 83.2 GB/s. The Xeon offers nearly five times the memory bandwidth.

Q: Does the AMD processor include integrated graphics?

A: Yes, the AMD Ryzen 9 8945HX has a Radeon 610M iGPU. The Intel Xeon 6517P has no integrated graphics at all.

Q: Which CPU has more PCIe lanes?

A: The Intel Xeon 6517P provides 88 PCIe Gen 5 lanes (CPU only), compared to the AMD’s 28 lanes. This makes the Xeon far more suitable for high-bandwidth expansion.

Q: What is the TDP difference?

A: The AMD Ryzen 9 8945HX is rated at 55W, while the Intel Xeon 6517P is rated at 190W. The Xeon draws significantly more power, which is typical for a server part.

Architecture Differences

The two CPUs come from different architectural lineages. AMD uses the Zen 4 architecture, codenamed Dragon Range, built on a 5nm process at TSMC. Intel’s Xeon 6517P is based on Granite Rapids, part of the Xeon 6 family, also on a 5nm process but fabricated by Intel itself. Both are 16-core/32-thread parts, but the cache hierarchy diverges: AMD has 64 KB of L1 per core and 1 MB of L2 per core, with a shared 64 MB L3. Intel gives each core 112 KB of L1 and 2 MB of L2, plus a 72 MB shared L3. The larger per-core caches on Intel help with certain workloads, while AMD’s higher boost clock (5.40 GHz vs 4.20 GHz) drives its single-thread advantage.

Memory controllers are another major split. AMD runs dual-channel DDR5 with 83.2 GB/s bandwidth, while Intel runs eight-channel DDR5 with 409.6 GB/s. Intel also supports ECC memory, AMD does not. PCIe connectivity is similarly lopsided: Intel offers 88 Gen 5 lanes, AMD only 28. Intel has no integrated graphics, whereas AMD includes a Radeon 610M. These differences reflect the target markets: mobile (AMD) versus server/workstation (Intel). The sockets are incompatible—AMD Socket FL1 versus Intel Socket 4710—and the Xeon’s multiplier is locked, while AMD’s is unlocked.

Specification Differences

| Specification | AMD Ryzen 9 8945HX | Intel Xeon 6517P |

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

| Base clock | 2.50 GHz | 3.20 GHz |

| Boost clock | 5.40 GHz | 4.20 GHz |

| TDP | 55W | 190W |

| Socket | AMD Socket FL1 | Intel Socket 4710 |

| Process node | 5 nm (TSMC) | 5 nm (Intel) |

| L1 cache (per core) | 64 KB | 112 KB |

| L2 cache (per core) | 1 MB | 2 MB |

| L3 cache (shared) | 64 MB | 72 MB |

| Memory bus | Dual-channel | Eight-channel |

| Memory bandwidth | 83.2 GB/s | 409.6 GB/s |

| ECC memory | No | Yes |

| PCIe lanes (CPU) | 28 Gen 5 | 88 Gen 5 |

| Integrated graphics | Radeon 610M | None |

| Market segment | Mobile | Server/Workstation |

| Release date | 2025-04-22 | 2025-02-23 |

| Multiplier unlocked | Yes | No |

| Part number | 100-000001848 | SRVU4 |

| Launch MSRP | — | $1195 |

The Xeon 6517P has a launch MSRP of $1195. The AMD chip has no listed MSRP, reflecting its mobile OEM focus.

The Verdict

The data shows a clear split: the AMD Ryzen 9 8945HX is the better all-round performer, winning 12 of 17 benchmarks and leading in single-thread, integer math, encryption, and random string sorting. Its 55W TDP and integrated graphics make it ideal for laptops and compact systems where power efficiency matters. The Intel Xeon 6517P, on the other hand, dominates in physics, floating point, prime number finding, and data compression, and it offers enormous memory bandwidth (409.6 GB/s) plus ECC support. That combination is essential for server workloads, scientific simulations, and memory-intensive database applications.

If you need a mobile processor that can handle a wide range of tasks with strong single-thread performance and low power draw, the AMD is the obvious choice. If you are building a server or workstation that requires high memory throughput, ECC reliability, and specialized compute strengths, the Xeon is the correct pick—provided you can accommodate its 190W TDP and lack of integrated graphics. The average benchmark scores are nearly tied, but the workload profile is what ultimately separates them.

Where Each One Wins

The AMD Ryzen 9 8945HX wins in every Cinebench test (R15, R20, R23) by 1.3–1.4%, in Passmark integer math (21.3% ahead), data encryption (20.1% ahead), random string sorting (14.4% ahead), and single-thread performance (13.8% ahead). It also edges out the Xeon in Passmark multithread (50,251 vs 49,572, a 1.4% lead). This makes it the better choice for general productivity, encryption workloads, and any application that rewards high clock speeds and strong integer execution.

The Intel Xeon 6517P wins in physics (48.6% ahead), find prime numbers (15.2% ahead), floating point math (8% ahead), extended instructions (9% ahead), and data compression (2.8% ahead). Its eight-channel memory controller and 409.6 GB/s bandwidth are major advantages for workloads that stream large datasets, such as scientific computing, compression utilities, and physics simulation. The Xeon’s ECC support and 88 PCIe lanes also make it the right foundation for a server platform where reliability and expandability are non-negotiable.