AMD Ryzen 7 5800H vs Intel Core Ultra 5 135U Comparison

Head-to-Head Benchmarks

The recorded data shows a clear pattern of multi-threaded dominance for the AMD Ryzen 7 5800H, while the Intel Core Ultra 5 135U counters in single-thread and specialized workloads. Across 15 head-to-head comparisons, the AMD part claims 10 wins, with Intel taking 5.

The largest margins come in integer and extended instruction workloads. In PassMark extended instructions, the Ryzen 7 5800H scores 18,203 against Intel's 11,144, a 63.3% advantage. PassMark integer math shows 80,786 versus 56,864, a 42.1% lead. Data encryption also heavily favors AMD: 16,962 versus 12,195, a 39.1% delta. Even data compression, a common laptop workload, sees the Ryzen 7 5800H at 270,608 against 196,712, which is 37.6% ahead.

Cinebench multi-core results reinforce this trend. In Cinebench R23 multi-core, the Ryzen 7 5800H scores 12,091.5 versus 9,315, a 29.8% advantage. Cinebench R15 multi-core shows 2,005 versus 1,634, a 22.7% lead. The Ryzen 7 5800H also wins PassMark multi-thread by 19.8%, scoring 20,789 against 17,359, and random string sorting by 30.2%, with 28,144 versus 21,620. Floating point math is a narrower affair: 44,479 versus 41,232, a 7.9% edge for AMD.

Intel's wins are concentrated in single-thread and physics workloads. PassMark single-thread shows 3,343 versus 3,021, a 9.6% advantage for the Core Ultra 5 135U. Cinebench R23 single-core also goes to Intel: 1,563 versus 1,416, a 9.4% delta. PassMark physics heavily favors Intel, with 1,122 against 830, a 26% lead. Prime number finding also goes to Intel, with 64 versus 49, a 23.4% advantage. The only near-tie is Cinebench R15 single-core, where AMD edges Intel 229 to 228, a 0.4% margin.

The aggregate picture from the database: the Ryzen 7 5800H carries an average benchmark score of 23,277, while the Core Ultra 5 135U sits at 22,618. Both processors land in the 76th percentile among all CPUs, indicating comparable overall standing despite the divergent workload profiles.

FAQ

Q: Which processor wins more head-to-head benchmark comparisons?

A: The AMD Ryzen 7 5800H wins 10 of the 15 recorded head-to-head tests, while the Intel Core Ultra 5 135U wins 5.

Q: How large is the multi-core performance gap in Cinebench?

A: In Cinebench R23 multi-core, the Ryzen 7 5800H scores 12,091.5 versus 9,315 for the Core Ultra 5 135U, a 29.8% advantage. In Cinebench R15 multi-core, AMD leads 2,005 to 1,634, a 22.7% delta.

Q: Does the Intel chip have any single-core advantage?

A: Yes. The Core Ultra 5 135U wins Cinebench R23 single-core with 1,563 versus 1,416, a 9.4% lead, and PassMark single-thread with 3,343 versus 3,021, a 9.6% advantage. However, in Cinebench R15 single-core, the Ryzen 7 5800H wins narrowly, 229 to 228.

Q: What is the most lopsided benchmark result?

A: The largest delta is in PassMark extended instructions, where the Ryzen 7 5800H scores 18,203 against Intel's 11,144, a 63.3% margin. PassMark integer math is second at 42.1%.

Q: How do the two compare in average benchmark score?

A: The Ryzen 7 5800H has an average benchmark score of 23,277, while the Core Ultra 5 135U averages 22,618. Both are rated in the 76th percentile of all CPUs.

Q: Which workloads favor the Intel Core Ultra 5 135U?

A: Intel wins PassMark physics (1,122 versus 830, a 26% lead), PassMark find prime numbers (64 versus 49, a 23.4% lead), and single-thread tests as noted above.

Architecture Differences

The two chips come from fundamentally different design philosophies. The AMD Ryzen 7 5800H uses the Zen 3 architecture under the Cezanne codename, built on a 7 nm process at TSMC. The Intel Core Ultra 5 135U uses the Meteor Lake architecture, also on a 7 nm node, but fabricated by Intel. Both are active mobile parts.

Core counts differ significantly. The Ryzen 7 5800H has 8 cores and 16 threads, while the Core Ultra 5 135U has 12 cores but only 14 threads, indicating a hybrid arrangement with efficiency cores that do not add thread count equally. The Intel part's base clock is listed at 1600.00, while the AMD part starts at 3.20; both boost to 4.40.

Cache hierarchies are distinct. The Ryzen 7 5800H provides 64 KB of L1 per core, 512 KB of L2 per core, and 16 MB of shared L3. The Core Ultra 5 135U has 112 KB of L1 per core, 2 MB of L2 per core, and 12 MB of shared L3. The Intel chip's larger per-core L2 reflects its different core types.

Memory support diverges: the AMD part uses DDR4 with dual-channel access and 68.3 GB/s bandwidth, while the Intel part supports DDR5 (dependent on motherboard) with dual-channel access and 89.6 GB/s bandwidth. PCIe generation also differs: the Ryzen 7 5800H is Gen 3, while the Core Ultra 5 135U is Gen 4 with 12 lanes (CPU only).

Integrated graphics differ as well. AMD pairs the Ryzen 7 5800H with Radeon Vega 8, while Intel uses Arc Xe-LPG 64EU. The Intel chip carries a launch MSRP of $332; the AMD part has no recorded launch MSRP in the database. The Ryzen 7 5800H has a transistor count of 10,700 million and a die size of 180 mm², while the Intel part's transistor count and die size are not recorded.

Specification Differences

The two processors diverge on nearly every core specification. The Ryzen 7 5800H offers 8 cores and 16 threads, while the Core Ultra 5 135U offers 12 cores and 14 threads. Base clocks differ sharply: 3.20 for AMD versus 1600.00 for Intel, though both reach the same 4.40 boost clock. Thermal design power is a major separator: 45 for the Ryzen 7 5800H versus 15 for the Core Ultra 5 135U.

Sockets are incompatible: AMD Socket FP6 for the Ryzen 7 5800H, Intel BGA 2049 for the Core Ultra 5 135U. The process nodes match at 7 nm, but the foundries differ: TSMC for AMD, Intel for Intel. Cache sizes are not shared: AMD has 64 KB L1 per core, 512 KB L2 per core, and 16 MB shared L3; Intel has 112 KB L1 per core, 2 MB L2 per core, and 12 MB shared L3.

Memory support is generation-apart: DDR4 for AMD, DDR5 for Intel. Memory bandwidth favors Intel at 89.6 GB/s versus 68.3 GB/s. PCIe generation favors Intel at Gen 4 with 12 lanes, versus Gen 3 for AMD. Integrated graphics are different models: Radeon Vega 8 versus Arc Xe-LPG 64EU. The Core Ultra 5 135U has a recorded launch MSRP of $332; the Ryzen 7 5800H has none. Release dates are nearly three years apart: January 2021 for AMD, December 2023 for Intel.

The Verdict

The data supports a workload-based decision, not a blanket winner. The AMD Ryzen 7 5800H is the choice for multi-threaded productivity and compute-heavy tasks. Its Cinebench R23 multi-core lead of 29.8% and PassMark integer math lead of 42.1% show a decisive edge for rendering, compilation, and data processing. The 63.3% advantage in extended instructions further cements its position for workloads that leverage SIMD and specialized instruction sets.

The Intel Core Ultra 5 135U is the better pick for single-thread responsiveness and physics-based scenarios. Its 9.6% PassMark single-thread lead and 26% physics advantage suggest stronger performance in lightly threaded applications and simulation or gaming physics. The 23.4% lead in prime number finding also points to certain mathematical workloads favoring Intel.

The thermal envelope is a decisive differentiator. The Ryzen 7 5800H is rated at 45 TDP, while the Core Ultra 5 135U is rated at 15 TDP. For thin-and-light laptops where cooling is constrained, the Intel part's lower power draw is a practical advantage. For larger notebooks or performance-focused machines, the AMD part's higher power budget translates into its multi-thread wins.

Both chips sit at the 76th percentile, and the average benchmark scores are close: 23,277 for AMD versus 22,618 for Intel. The Ryzen 7 5800H is roughly 2.9% ahead on average, but that figure masks the workload-specific deltas. The Core Ultra 5 135U also carries a newer memory standard, DDR5, and PCIe Gen 4, which may matter for system-level features beyond raw CPU benchmarks.

Ultimately, the choice depends on the usage profile. For users who prioritize multi-threaded throughput, the Ryzen 7 5800H is supported by the data. For users who value single-thread speed, physics performance, and lower power draw, the Core Ultra 5 135U is the recorded leader. The 5 versus 10 win split in head-to-head tests reflects a fair distribution of strengths, not a lopsided contest.