Intel Core Ultra 7 366H vs Intel Xeon 6507P Comparison

Head-to-Head Benchmarks

The benchmark data reveals a clear overall winner: the Intel Core Ultra 7 366H takes 13 of 17 head-to-head tests, while the Intel Xeon 6507P manages 4 wins. The margin is not uniform, however, and the Xeon scores its victories in specific workloads that matter for server deployments.

Starting with Cinebench, the mobile chip dominates across the board. In Cinebench R15 multicore, the Ultra 7 366H scores 2870 versus 2676 for the Xeon, a 7.2% lead. Single-core R15 shows a similar gap: 405 versus 377, or 7.4% ahead. The R20 and R23 suites tell the same story, with consistent 7.3% deltas in both multicore and singlecore tests. The R23 multicore result is 28477 for the Ultra 7 versus 26548 for the Xeon.

PassMark results are more polarized. The Xeon 6507P wins data compression with 356190 versus 327455, an 8.1% margin. It also takes integer math at 88877 versus 83695, a 5.8% edge. Extended instructions go narrowly to the Xeon at 27385 versus 26901, just 1.8% ahead, and physics is a slim Xeon win at 2935 versus 2880, 1.9% higher.

The Ultra 7's PassMark victories are far more emphatic. Floating point math is the biggest gap: 103615 versus 69604, a massive 48.9% advantage. Data encryption shows 25845 versus 17753, a 45.6% lead, and find prime numbers comes in at 326 versus 224, 45.5% ahead. The multithread test goes to the Ultra 7 by 7% (33429 versus 31233), and single thread tests show an 11% advantage (4043 versus 3643). Random string sorting is a narrow 0.3% win for the Ultra 7 at 39814 versus 39682.

What stands out is the distribution. The Xeon wins exactly where you would expect a server chip to win: compression, integer math, and physics. The Ultra 7 dominates in encryption and floating point, which suggests architectural strengths in those execution paths. The Cinebench results show the mobile chip has better sustained all-core rendering performance despite its lower power envelope.

The average benchmark scores confirm the close overall competition. The Ultra 7 366H averages 41263 across its benchmark suite, while the Xeon 6507P averages 40426. Both sit at the 87th percentile against all CPUs in the database. The nearest rival for the Ultra 7 is the Core Ultra 7 356H at 41215, a mere 0.1% gap. The Xeon's nearest rival is AMD's Ryzen 9 7940H at 40431, essentially a dead heat with a 0.0% delta.

Architecture Differences

The two processors are built on fundamentally different foundations. The Core Ultra 7 366H uses Panther Lake architecture, fabricated on Intel's 3 nm process. The Xeon 6507P is Granite Rapids, on a 5 nm node. Both come from Intel's fabs, but the process gap explains why the mobile chip can achieve higher clocks and better efficiency despite a much lower power envelope.

Core counts differ sharply. The Ultra 7 packs 16 cores and 16 threads, while the Xeon has 8 cores and 16 threads. That is the first notable divergence: the Ultra 7 uses 16 physical cores with no hyperthreading, while the Xeon leverages hyperthreading to reach 16 threads from 8 cores. The Xeon's base clock is higher at 3.50 GHz versus 2.00 GHz, but the Ultra 7 boosts to 4.80 GHz versus 4.30 GHz.

Cache layout is a major difference. The Ultra 7 has 192 KB of L1 per core, 2.5 MB of L2 per core, and 18 MB of shared L3. The Xeon has 112 KB of L1 per core, 2 MB of L2 per core, and a much larger 48 MB of shared L3. That 48 MB pool benefits server workloads with large working sets, while the Ultra 7's higher per-core L1 and L2 help latency-sensitive tasks.

Memory support diverges sharply. The Ultra 7 supports DDR5 and LPDDR5X over a dual-channel bus with 115.2 GB/s bandwidth. The Xeon supports only DDR5, but over an eight-channel bus delivering 409.6 GB/s, over 3.5 times the memory bandwidth. The Xeon also supports ECC memory, while the Ultra 7 does not. PCIe connectivity is another divide: the Ultra 7 offers Gen 5 with 12 CPU lanes, while the Xeon provides Gen 5 with 88 CPU lanes for server peripherals.

The Ultra 7 includes Intel Xe3 Graphics, while the Xeon has no integrated graphics. The socket is BGA 2540 for the mobile chip versus Socket 4710 for the server part. The power ceiling is the most striking difference: the Ultra 7 runs at 25 W TDP, the Xeon at 150 W. That explains the thermal and deployment profile, but the benchmark data shows the mobile chip still leads in most tests despite drawing a fraction of the power.

Where Each One Wins

The Ultra 7 366H is the better choice for any workload that stresses floating point throughput. The 48.9% lead in PassMark floating point math is its flagship result, and the 45.6% encryption advantage suggests strong vector and crypto acceleration. The single-thread performance gap of 11% in PassMark and 7.3% in Cinebench makes it the stronger chip for responsiveness, gaming, and lightly threaded applications. The Cinebench multicore wins indicate it is also the better overall rendering CPU for Cinebench, which aligns with its 16 physical cores.

The Xeon 6507P wins where its architecture is tuned for server duty. Data compression at 8.1% ahead and integer math at 5.8% ahead show strength in data movement and general-purpose integer operations. The physics test at 1.9% higher suggests its thread scheduling and high base clock benefit physics simulation. The large 48 MB L3 cache and 409.6 GB/s memory bandwidth make it suited for in-memory databases and high-core-count server scenarios that rely on memory throughput, even if the benchmark suite does not fully capture that.

For a mobile user, the Ultra 7 is the clear pick. The 25 W TDP means it fits in laptops while outperforming a 150 W server chip in most tests. For a server rack, the Xeon's ECC support, eight-channel memory, and 88 PCIe lanes are features the Ultra 7 cannot match, even if the raw CPU benchmarks favor the mobile chip.

FAQ

Q: Which CPU wins in Cinebench multicore tests?

A: The Intel Core Ultra 7 366H wins all three Cinebench multicore tests. It leads by 7.2% in R15 (2848 versus 2676), 7.3% in R20 (11960 versus 11150), and 7.3% in R23 (28477 versus 26548).

Q: Does the Xeon 6507P beat the Ultra 7 in any math test?

A: Yes, the Xeon wins PassMark integer math at 88877 versus 83695, a 5.8% advantage. It also wins physics at 2935 versus 2880, but loses floating point heavily at 69604 versus 103615.

Q: Which processor supports ECC memory?

A: The Intel Xeon 6507P supports ECC memory. The Intel Core Ultra 7 366H does not support ECC.

Q: What is the memory bandwidth difference?

A: The Xeon 6507P has 409.6 GB/s over an eight-channel DDR5 bus. The Ultra 7 366H has 115.2 GB/s over a dual-channel bus that also supports LPDDR5X.

Q: How many cores and threads does each have?

A: The Ultra 7 366H has 16 cores and 16 threads. The Xeon 6507P has 8 cores and 16 threads, using hyperthreading to double thread count.

Q: Which has a higher boost clock?

A: The Ultra 7 366H boosts to 4.80 GHz, while the Xeon 6507P boosts to 4.30 GHz. However, the Xeon has a higher base clock at 3.50 GHz versus 2.00 GHz.

Specification Differences

| Specification | Intel Core Ultra 7 366H | Intel Xeon 6507P |

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

| Cores | 16 | 8 |

| Threads | 16 | 16 |

| Base Clock | 2.00 GHz | 3.50 GHz |

| Boost Clock | 4.80 GHz | 4.30 GHz |

| TDP | 25 W | 150 W |

| Socket | Intel BGA 2540 | Intel Socket 4710 |

| Architecture | Panther Lake | Granite Rapids |

| Process Node | 3 nm | 5 nm |

| L1 Cache (per core) | 192 KB | 112 KB |

| L2 Cache (per core) | 2.5 MB | 2 MB |

| L3 Cache (shared) | 18 MB | 48 MB |

| Memory Support | DDR5, LPDDR5X | DDR5 |

| Memory Bus | Dual-channel | Eight-channel |

| Memory Bandwidth | 115.2 GB/s | 409.6 GB/s |

| ECC Memory | false | true |

| PCIe Lanes (CPU only) | Gen 5, 12 lanes | Gen 5, 88 lanes |

| Integrated Graphics | Intel Xe3 Graphics | N/A |

| Market Segment | Mobile | Server/Workstation |

| Release Date | 2026-01-04 | 2025-02-23 |

| Launch MSRP | null | $765 |

| Part Number | SA4R9Q9EL | SRVU5 |