Intel Core Ultra 7 265H vs Intel Xeon 6507P Comparison

Head-to-Head Benchmarks

The benchmark database records 17 head-to-head comparisons between the Intel Core Ultra 7 265H and the Intel Xeon 6507P. The Core Ultra 7 takes 10 wins, the Xeon takes 7. The scoreboard alone, however, hides how lopsided specific workloads can be.

The single largest victory belongs to the Core Ultra 7 in PassMark floating point math. It scores 109123 against the Xeon's 69604, a 56.8% advantage. This is a massive gap for any modern x86 processor, and it signals that the mobile chip's execution resources are far better tuned for heavy FPU work. The data encryption test shows a similar story, with the Core Ultra 7 at 26005 versus 17753, a 46.5% win. Prime number finding is also strongly in the mobile part's favor, 335 versus 224, a 49.6% margin. These three results define the Core Ultra 7's edge: raw computational throughput on specialized workloads.

The Xeon fights back in single-core Cinebench tests, but with a twist. In Cinebench R23 single-core, the Xeon wins by a huge 44.5% (3747 versus 2080). In Cinebench R20 single-core, however, the Core Ultra 7 wins 1712 versus 1573, an 8.8% margin. The R15 single-core test goes back to the Xeon, 377 versus 307, an 18.6% win. This inconsistency across Cinebench versions is unusual and suggests the two chips have very different boost behaviors and IPC characteristics under different load patterns.

Multi-core Cinebench results also point in different directions. The Xeon takes Cinebench R23 multi-core decisively, 26548 versus 19940, a 24.9% win. But the Core Ultra 7 wins Cinebench R15 multi-core by 11.7% (2989 versus 2676) and Cinebench R20 multi-core by 8.8% (12131 versus 11150). The R23 result is notable because it is the Xeon's largest multi-core win, and it suggests that the server chip sustains its performance better under the longer R23 workload.

PassMark results add more texture. The Xeon wins data compression by 6% (356190 versus 334711), extended instructions by 2.1% (27385 versus 26805), integer math by 3.8% (88877 versus 85479), and physics by 14.9% (2935 versus 2497). The Core Ultra 7 wins random string sorting by 2.7% (40742 versus 39682) and multithread by 8.9% (34027 versus 31233). In single-thread PassMark, the Core Ultra 7 takes a 19% victory (4334 versus 3643), which aligns with its R20 single-core win but conflicts with the R15 and R23 single-core results.

Architecture Differences

The two processors come from completely different design lineages. The Core Ultra 7 265H is built on Arrow Lake, specifically Arrow Lake-H, using a 3 nm process from TSMC. The Xeon 6507P is Granite Rapids, on Intel's own 5 nm process. The mobile chip is part of the Core Ultra Series 2 generation, while the Xeon is part of the Xeon 6 family.

Core counts differ significantly. The 265H has 16 cores and 16 threads, while the 6507P has 8 cores and 16 threads. The Xeon uses Hyper-Threading, hence 16 threads from 8 cores. The Core Ultra 7 does not use Hyper-Threading, so its 16 threads come from 16 physical cores. This explains some of the benchmark divergence: the 265H has more physical cores, while the 6507P has fewer but higher-clocked ones.

Clock speeds tell that story directly. The 265H has a base clock of 2.20 GHz and a boost of 5.30 GHz. The 6507P has a base of 3.50 GHz and a boost of 4.30 GHz. The Xeon's higher base clock gives it a sustained throughput advantage in lightly threaded tasks, while the 265H's much higher boost clock helps it in short, burst-heavy workloads. The Cinebench R20 single-core result, where the 265H wins, likely reflects that high boost frequency.

Cache allocation is also contrasting. The 265H has 192 KB of L1 per core, 3 MB of L2 per core, and 24 MB of shared L3. The 6507P has 112 KB L1 per core, 2 MB L2 per core, but a much larger 48 MB of shared L3. The extra L3 on the Xeon helps with large working sets, which may explain its wins in data compression and extended instructions.

Memory support differs wildly. The 265H supports DDR5 and LPDDR5X in a dual-channel configuration, with a memory bandwidth of 102.4 GB/s. The 6507P supports DDR5 in an eight-channel configuration, with a memory bandwidth of 409.6 GB/s. Four times the theoretical bandwidth on the Xeon is a major architectural advantage for memory-heavy server workloads. Both support ECC memory, which is a plus for the mobile chip that rarely appears in that segment.

PCIe and graphics are polar opposites. The 265H has Gen 5 with 8 lanes (CPU only) and integrated Arc Graphics 140T. The 6507P has Gen 5 with 88 lanes (CPU only) and no integrated graphics. The Xeon's 88 PCIe lanes make it a platform for expansion, while the Core Ultra 7's integrated GPU makes it a complete laptop processor.

The sockets and form factors are not compatible at all. The 265H uses Intel BGA 2049, a soldered mobile socket. The 6507P uses Intel Socket 4710, a server socket. The Xeon is a server or workstation part, and the 265H is a mobile part.

FAQ

Q: Which CPU has a higher boost clock?

A: The Intel Core Ultra 7 265H has a boost clock of 5.30 GHz, while the Intel Xeon 6507P has a boost clock of 4.30 GHz. Despite that, the Xeon wins Cinebench R23 and R15 single-core tests, likely due to its higher base clock of 3.50 GHz versus 2.20 GHz.

Q: How do the multi-core Cinebench scores compare?

A: They split by test version. The 265H wins in R15 multi-core by 11.7% (2989 versus 2676) and R20 multi-core by 8.8% (12131 versus 11150). The 6507P wins R23 multi-core by 24.9% (26548 versus 19940).

Q: Does the Xeon have ECC memory support?

A: Yes, the Xeon 6507P supports ECC memory, and so does the Core Ultra 7 265H. This is notable because ECC is rare in mobile processors.

Q: Which CPU has higher L3 cache?

A: The Intel Xeon 6507P has 48 MB of shared L3 cache. The Intel Core Ultra 7 265H has 24 MB of shared L3 cache. The Xeon has twice the L3.

Q: What is the memory bandwidth difference?

A: The Xeon 6507P has a memory bandwidth of 409.6 GB/s over an eight-channel DDR5 bus. The Core Ultra 7 265H has 102.4 GB/s over a dual-channel bus. The Xeon has four times the theoretical bandwidth.

Q: Which processor has more PCIe lanes?

A: The Xeon 6507P has 88 PCIe Gen 5 lanes (CPU only). The Core Ultra 7 265H has 8 PCIe Gen 5 lanes (CPU only). The Xeon has 11 times the lane count.

The Verdict

The data paints a clear picture of two processors built for different jobs. Pick the Intel Core Ultra 7 265H if you need the faster CPU for general mobile work, especially if your workloads involve heavy math, encryption, or floating-point operations. It wins 10 of 17 head-to-head tests, including the largest wins of the entire comparison. The 265H's PassMark single-thread score of 4334 is 19% higher than the Xeon's 3643. It is also the only one with an integrated GPU, making it a complete system-on-chip for a laptop.

Pick the Intel Xeon 6507P if you need sustained performance in CPU-bound server tasks. The Xeon wins Cinebench R23 multi-core by 24.9% and Cinebench R23 single-core by 44.5%. It also has a 48 MB L3 cache and an eight-channel memory bus with 409.6 GB/s bandwidth. The Xeon's 88 PCIe lanes allow for huge expansion. Its launch MSRP is $765, but the database does not compare it to the 265H on price. The Xeon is a server part, and the data shows it handles memory-heavy and cache-sensitive workloads better.

The Core Ultra 7 265H has a 3nm process and a 5.30 GHz boost, which gives it an edge in short, bursty, latency-sensitive tasks. The Xeon 6507P has a 3.50 GHz base clock and 150 W TDP, which suits sustained server loads. The average benchmark scores are close, 41621 for the 265H versus 40426 for the 6507P, a difference of about 2.9%. Both are in the 87th percentile or above of all CPUs. The 265H is the better all-rounder for daily tasks, the 6507P is the better server CPU for memory and cache-heavy jobs.

Specification Differences

| Specification | Intel Core Ultra 7 265H | Intel Xeon 6507P |

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

| Architecture | Arrow Lake (Arrow Lake-H) | Granite Rapids (Granite Rapids-SP) |

| Process Node | 3 nm (TSMC) | 5 nm (Intel) |

| Cores | 16 | 8 |

| Threads | 16 | 16 |

| Base Clock | 2.20 GHz | 3.50 GHz |

| Boost Clock | 5.30 GHz | 4.30 GHz |

| TDP | 28 W | 150 W |

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

| L2 Cache | 3 MB (per core) | 2 MB (per core) |

| L3 Cache | 24 MB (shared) | 48 MB (shared) |

| Memory Support | DDR5, LPDDR5X | DDR5 |

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

| Memory Bandwidth | 102.4 GB/s | 409.6 GB/s |

| PCIe | Gen 5, 8 Lanes | Gen 5, 88 Lanes |

| Integrated Graphics | Arc Graphics 140T | N/A |

| Socket | Intel BGA 2049 | Intel Socket 4710 |

| Market Segment | Mobile | Server/Workstation |

| Release Date | 2025-01-12 | 2025-02-23 |

Where Each One Wins

The Intel Core Ultra 7 265H wins in:

• Floating point and math: 56.8% ahead in floating point, 49.6% ahead in prime numbers, 46.5% ahead in encryption.
• PassMark multithread: 8.9% higher than the Xeon (34027 versus 31233).
• Cinebench R20 and R15 multi-core: 8.8% and 11.7% wins respectively.
• Single-thread PassMark: 19% higher score (4334 versus 3643).
• Cinebench R20 single-core: 8.8% win.
• Random string sorting: 2.7% win.

These are the workloads for a fast laptop CPU: encryption, heavy math, and good all-around responsiveness.

The Intel Xeon 6507P wins in:

• Cinebench R23 multi-core: 24.9% win, its largest multi-core margin.
• Cinebench R23 single-core: 44.5% win, its largest single-core margin.
• Cinebench R15 single-core: 18.6% win.
• PassMark data compression: 6% win.
• PassMark extended instructions: 2.1% win.
• PassMark integer math: 3.8% win.
• PassMark physics: 14.9% win.

These are the workloads for a server: sustained compression, integer processing, and physics simulation. The Xeon's 48 MB L3 and 409.6 GB/s memory bandwidth back up these wins. The Core Ultra 7's 102.4 GB/s bandwidth is a clear bottleneck for the server tasks, while the Xeon's 8 PCIe lanes are a clear limit for expansion. The right choice is dictated by the workload and the platform, not by a single score.