Intel Core Ultra 7 356H vs Intel Xeon 6507P Comparison

Head-to-Head Benchmarks

The benchmark data between the Intel Core Ultra 7 356H and the Intel Xeon 6507P reveals a clear split: the mobile Ultra 7 dominates most single-thread and throughput-oriented tests, while the Xeon counters with decisive wins in specific multi-core and compression workloads. Across the 17 recorded head-to-head tests, the Core Ultra 7 356H claims 11 victories, the Xeon 6507P takes 6.

The most lopsided result in favor of the Ultra 7 356H is in data encryption, where it scores 26,345 against the Xeon's 17,753, a 48.4% advantage. Floating point math is equally one-sided: 103,128 versus 69,604, a 48.2% margin. Prime number finding shows a 46% lead (327 vs 224). These results indicate the Ultra 7's architecture handles cryptographic and floating-point workloads with far greater efficiency per clock.

The Xeon 6507P's largest win comes in Cinebench R23 multi-core, scoring 26,548 against 18,395, a 30.7% advantage. The single-core portion of that same benchmark is even more extreme: 3,747 versus 2,040, a 45.6% lead for the Xeon. This is a striking reversal, as the Ultra 7 leads in the older Cinebench R20 single-core test by 9% (1,715 vs 1,573) yet trails by a wide margin in R23 single-core. The newer benchmark appears to favor the Xeon's higher base clock (3.50 GHz vs 1.90 GHz) and larger L3 cache.

In Cinebench R15, the two trade places. The Ultra 7 wins multi-core 3,055 to 2,676 (14.2% ahead), but the Xeon wins single-core 377 to 303 (19.6% ahead). The Ultra 7 also takes Cinebench R20 multi-core with 12,153 versus 11,150, a 9% edge. The Xeon's R23 multi-core result, however, suggests that under sustained load with the newer instruction set, its eight physical cores with 48 MB of shared L3 cache can outperform the Ultra 7's 16 cores and 18 MB L3.

PassMark results further define the gap. The Xeon leads in data compression by 5.6% (356,190 vs 336,177) and integer math by 6.5% (88,877 vs 83,111). It also edges out the Ultra 7 in physics by 1.4% (2,935 vs 2,895). The Ultra 7 counters with an 8.8% win in PassMark multi-thread (33,978 vs 31,233), an 11.8% win in single-thread (4,072 vs 3,643), a 3.3% win in random string sorting (40,990 vs 39,682), and a narrow 1.9% win in extended instructions (27,898 vs 27,385).

The overall average benchmark score places the Ultra 7 at 41,215 and the Xeon at 40,426, a difference of roughly 2%. Both processors sit at the 87th percentile among all CPUs in the database. The nearest rivals for the Ultra 7 include the AMD Ryzen AI 5 PRO 440 (41,208, 0% delta) and the Intel Core Ultra 7 366H (41,263, -0.1% delta), showing it is tightly clustered with peers. The Xeon's nearest rivals include the AMD Ryzen 9 7940H (40,431, 0% delta) and the Intel Core Ultra X7 368H (40,518, -0.2% delta).

FAQ

Q: Which processor wins more benchmark comparisons?

A: The Intel Core Ultra 7 356H wins 11 of the 17 head-to-head tests, while the Intel Xeon 6507P wins 6. The Ultra 7's wins are concentrated in encryption, floating point math, and single-threaded PassMark, while the Xeon's strongest results are in Cinebench R23 and data compression.

Q: How large is the Xeon 6507P's advantage in Cinebench R23?

A: The Xeon leads by 30.7% in multi-core (26,548 vs 18,395) and by 45.6% in single-core (3,747 vs 2,040). This is the single biggest margin recorded in either direction across the entire benchmark set.

Q: Does the Ultra 7 356H have any wins in Cinebench tests?

A: Yes. The Ultra 7 wins Cinebench R15 multi-core by 14.2% (3,055 vs 2,676) and Cinebench R20 multi-core by 9% (12,153 vs 11,150). It also wins Cinebench R20 single-core by 9% (1,715 vs 1,573).

Q: How do the two compare in PassMark single-thread performance?

A: The Ultra 7 356H scores 4,072, which is 11.8% ahead of the Xeon's 3,643. This holds for both the `passmark_single_thread` and `passmark_singlethread` entries, which record identical scores.

Q: What is the largest win for the Ultra 7 in percentage terms?

A: Data encryption shows a 48.4% lead (26,345 vs 17,753). Floating point math follows closely at 48.2% (103,128 vs 69,604), and prime number finding is 46% ahead (327 vs 224).

Q: Where does the Xeon 6507P outperform the Ultra 7 outside of Cinebench?

A: The Xeon leads in data compression by 5.6% (356,190 vs 336,177), integer math by 6.5% (88,877 vs 83,111), and physics by 1.4% (2,935 vs 2,895).

The Verdict

The benchmark data indicates a clear division of roles. The Intel Core Ultra 7 356H is the better choice for workloads that depend on high single-thread throughput, cryptographic operations, and floating-point math. Its 48.4% lead in data encryption and 48.2% lead in floating point math make it the stronger candidate for encryption-heavy applications, scientific computing, or any task that stresses vectorized arithmetic. The 11.8% single-thread PassMark advantage further supports its suitability for responsive, lightly threaded software.

The Intel Xeon 6507P, by contrast, is the pick for workloads that favor raw multi-core scaling in newer rendering benchmarks and compression tasks. Its 30.7% lead in Cinebench R23 multi-core and 45.6% lead in single-core R23 suggest that modern rendering engines benefit from its higher base clock and substantially larger L3 cache (48 MB vs 18 MB). The 5.6% win in data compression and 6.5% win in integer math also point to server-style batch processing where large datasets are shuffled and sorted.

Neither processor is a universal winner. The Ultra 7's overall average benchmark score (41,215) slightly exceeds the Xeon's (40,426), and both share the same 87th percentile ranking. Users targeting mobile platforms should select the Ultra 7, as it delivers superior results in the majority of tests while operating within a mobile thermal envelope. Users building server or workstation systems should consider the Xeon, particularly if their software relies on Cinebench R23-style rendering or data compression pipelines.

Specification Differences

The two processors differ across nearly every core specification. The Intel Core Ultra 7 356H has 16 cores and 16 threads, while the Intel Xeon 6507P has 8 cores and 16 threads. The Ultra 7's base clock is 1.90 GHz with a boost clock of 4.70 GHz; the Xeon's base clock is 3.50 GHz with a boost clock of 4.30 GHz. The Ultra 7's TDP is 25, the Xeon's is 150. The Ultra 7 uses Intel BGA 2540, the Xeon uses Intel Socket 4710.

Memory support differs significantly. The Ultra 7 supports DDR5 and LPDDR5X over a dual-channel bus with 115.2 GB/s bandwidth, and it does not support ECC memory. The Xeon supports DDR5 over an eight-channel bus with 409.6 GB/s bandwidth, and it supports ECC memory. PCIe lane counts also diverge: the Ultra 7 has Gen 5 with 12 lanes (CPU only), the Xeon has Gen 5 with 88 lanes (CPU only). The Ultra 7 includes integrated Intel Xe3 Graphics; the Xeon has no integrated graphics.

The cache hierarchy is distinct. The Ultra 7 has 192 KB L1 per core, 2.5 MB L2 per core, and 18 MB shared L3. The Xeon has 112 KB L1 per core, 2 MB L2 per core, and 48 MB shared L3. The market segments differ as well: the Ultra 7 is a mobile processor, the Xeon is a server/workstation processor. Their release dates are also different, with the Xeon appearing earlier in the database.

Architecture Differences

The architectural split is fundamental. The Intel Core Ultra 7 356H is built on Panther Lake, part of the Core Ultra Series 3, using a 3 nm process at Intel's foundry. Its generation is listed as Ultra 7 (Panther Lake-H). The Intel Xeon 6507P is built on Granite Rapids, part of the Xeon 6 (Granite Rapids-SP) generation, using a 5 nm process, also at Intel's foundry. The process node difference gives the Ultra 7 a density and efficiency advantage, which aligns with its 25 TDP versus the Xeon's 150 TDP.

The core count discrepancy (16 vs 8) is paired with a thread count that is equal (16 each), meaning the Ultra 7 uses all physical cores with no hyper-threading, while the Xeon relies on hyper-threading to reach 16 threads from 8 cores. The Xeon compensates with a much higher base clock (3.50 GHz vs 1.90 GHz) and a larger shared L3 cache (48 MB vs 18 MB). The L1 and L2 per-core caches are larger on the Ultra 7 (192 KB and 2.5 MB) compared to the Xeon (112 KB and 2 MB), which may explain the Ultra 7's wins in latency-sensitive single-thread tests.

The memory architecture reinforces the Xeon's server positioning: eight-channel DDR5 with 409.6 GB/s bandwidth versus the Ultra 7's dual-channel 115.2 GB/s. The Xeon's ECC support and 88 PCIe Gen 5 lanes are characteristic of server platforms, while the Ultra 7's integrated Xe3 graphics and 12 PCIe lanes suit a mobile client. The part numbers also differ (SA4RGQ9EU for the Ultra 7, SRVU5 for the Xeon), and neither processor has an unlocked multiplier.