Intel Core i5-1334U vs Intel Core i5-13420H Comparison

Both processors belong to Intel's Core 13th Gen mobile lineup and share the same Raptor Lake architecture family, but they are engineered for different segments of the laptop market. The Intel Core i5-13420H is the high-performance part, while the Intel Core i5-1334U is the low-power variant. Analysis of the recorded benchmark data shows a clear split: the 13420H dominates in multi-threaded and sustained workloads, while the 1334U occasionally edges ahead in single-core tests. The following sections break down where each chip wins, what separates them architecturally, and what the head-to-head numbers mean in practice.

Where Each One Wins

The Intel Core i5-13420H is the clear winner in almost every measured category, taking 15 of the 17 head-to-head benchmark comparisons. Its biggest advantages appear in multi-core rendering, data compression, and physics simulation. For example, in Cinebench R20 multicore it scores 6013 against 4638 for the 1334U, a 29.6% lead. In PassMark physics, the gap widens to 40.2%, with scores of 1012 and 722 respectively. This pattern holds across PassMark multithread (30.3% ahead), random string sorting (30.2% ahead), and floating point math (24.2% ahead). The 13420H is clearly the part to choose for sustained CPU-heavy tasks like video encoding, 3D rendering, or any workload that can use all available threads.

The Intel Core i5-1334U wins only two comparisons, both in single-core Cinebench tests. It takes Cinebench R15 singlecore with 241 versus 238, a 1.2% margin, and Cinebench R23 singlecore with 1727 versus 1689, a 2.2% margin. These are narrow victories, but they suggest that for short, lightly threaded bursts, the 1334U can be slightly more responsive. In PassMark single_thread, the 13420H actually wins by 1.5% (3396 vs 3345), so the 1334U's single-thread advantage is not universal. It only shows up in the Cinebench single-core workloads.

The use-case split is therefore straightforward. The 13420H is for users who need sustained multi-core performance, while the 1334U is for scenarios where brief single-core responsiveness matters more than throughput, and where the lower 15 W TDP is a priority.

Architecture Differences

Both chips use the Raptor Lake architecture and are built on Intel's 10 nm process node, but they target different power envelopes. The 13420H has a TDP of 45 W, while the 1334U is rated at 15 W. This difference is the single most important architectural distinction, as it dictates how long each chip can sustain boost clocks under load.

The core configurations also differ. The 13420H has 8 cores and 12 threads, while the 1334U has 10 cores and 12 threads. Despite having fewer cores, the 13420H delivers higher multi-threaded scores, which indicates that its core arrangement is more performance-oriented. The 1334U likely uses a mix of performance and efficiency cores to achieve its higher core count within a lower power budget.

Cache layouts differ as well. Both share 12 MB of L3 cache, but the L2 cache is allocated differently. The 13420H has 2 MB of L2 per core, while the 1334U has 1.25 MB per core. L1 cache is the same at 80 KB per core.

The memory and I/O capabilities differ in one notable way. The 13420H supports PCIe Gen 5 with 8 lanes (CPU only), while the 1334U is limited to PCIe Gen 4 with 8 lanes (CPU only). Both support DDR4 and DDR5 memory in dual-channel mode, and neither supports ECC memory. Both integrate Iris Xe Graphics with 80 execution units, so integrated graphics capability is identical on paper.

Both processors are active production parts, launched on the same date, and neither has an unlocked multiplier. The 13420H carries part number SRMHX, while the 1334U is SRML5.

Head-to-Head Benchmarks

The recorded head-to-head data provides a detailed picture of where the 13420H pulls away. In Cinebench R20 multicore, the 13420H scores 6013 versus 4638, a 29.6% advantage. This is one of the largest multi-core gaps in the Cinebench suite. Cinebench R23 multicore shows a similar story: 11084 for the 13420H against 8641 for the 1334U, a 28.3% lead. Cinebench R15 multicore is closer, 1738 versus 1569, a 10.8% margin, but the 13420H still wins.

Single-core Cinebench results are the one area where the 1334U strikes back. In Cinebench R15 singlecore, it scores 241 versus 238, a 1.2% edge. In Cinebench R23 singlecore, it scores 1727 versus 1689, a 2.2% edge. However, in Cinebench R20 singlecore, the 13420H wins decisively with 848 versus 654, a 29.7% advantage. This inconsistency suggests that the 1334U's single-core wins are workload-specific rather than a general trend.

The PassMark suite heavily favors the 13420H. Data compression shows a 39.1% lead (209450 vs 150568). Extended instructions show a 50.6% lead (12897 vs 8563), the largest single delta in the entire comparison. Find prime numbers shows a 33.3% lead (52 vs 39). Physics shows a 40.2% lead (1012 vs 722). Floating point math is 24.2% ahead (42806 vs 34474). Integer math is 15.4% ahead (58156 vs 50374). Multithread is 30.3% ahead (17475 vs 13410). Random string sorting is 30.2% ahead (22045 vs 16933). Data encryption is 23.3% ahead (11559 vs 9377).

PassMark single-threaded results are close, with the 13420H winning by 1.5% (3396 vs 3345). This is a much smaller margin than the multi-threaded gaps, and it confirms that the 13420H's advantage is primarily in parallel workloads.

FAQ

Q: Which processor is faster in multi-core workloads?

A: The Intel Core i5-13420H wins every multi-core benchmark in the head-to-head data. Its lead ranges from 10.8% in Cinebench R15 multicore to 50.6% in PassMark extended instructions.

Q: Does the Intel Core i5-1334U win any benchmarks?

A: Yes, it wins two single-core Cinebench tests: Cinebench R15 singlecore by 1.2% and Cinebench R23 singlecore by 2.2%. It loses PassMark single_thread by 1.5%.

Q: How do the core counts compare?

A: The 13420H has 8 cores and 12 threads. The 1334U has 10 cores and 12 threads. Despite fewer cores, the 13420H scores higher in multi-threaded benchmarks.

Q: Are the integrated graphics the same?

A: Yes, both processors integrate Iris Xe Graphics with 80 execution units.

Q: What is the TDP difference?

A: The 13420H has a TDP of 45 W, while the 1334U has a TDP of 15 W. This explains the 13420H's higher sustained performance and the 1334U's lower power draw.

Q: Do both processors support the same memory types?

A: Yes, both support DDR4 and DDR5 in dual-channel mode. Neither supports ECC memory.

Specification Differences

The two processors differ in several specification fields. The 13420H has 8 cores and 12 threads, while the 1334U has 10 cores and 12 threads. Base clock values differ dramatically: the 13420H has a base clock of 2.10 GHz, while the 1334U lists a base clock of 1300.00 MHz. Boost clock is identical at 4.60 GHz for both.

TDP is a major differentiator: the 13420H is rated at 45 W, the 1334U at 15 W. L2 cache differs as well, with 2 MB per core on the 13420H versus 1.25 MB per core on the 1334U. L3 cache is the same at 12 MB shared.

PCIe support differs: the 13420H supports PCIe Gen 5 with 8 lanes (CPU only), while the 1334U supports PCIe Gen 4 with 8 lanes (CPU only). The codenames differ (Raptor Lake-H for the 13420H, Raptor Lake-U for the 1334U), and the part numbers are SRMHX and SRML5 respectively. The 1334U has a launch MSRP of $340. The 13420H has no recorded launch MSRP.

The Verdict

The data points to a simple conclusion: the Intel Core i5-13420H is the stronger processor in nearly every measurable way. It wins 15 of 17 head-to-head benchmarks, with leads that often exceed 30% in multi-threaded workloads. Users who run rendering, compression, or physics-heavy applications should choose the 13420H without hesitation. Its 45 W TDP and higher per-core L2 cache translate directly into higher throughput.

The Intel Core i5-1334U is the better choice only for users who prioritize power efficiency over performance. Its 15 W TDP makes it suitable for thin-and-light laptops where battery life matters more than sustained CPU power. Its two wins in single-core Cinebench tests are narrow, and it actually loses the PassMark single-threaded test, so it cannot be recommended on the basis of single-core superiority alone. The 1334U's higher core count (10 cores vs 8) does not translate into a performance advantage in the recorded benchmarks.

Both processors sit at the 72nd percentile against all CPUs, and their average benchmark scores are close overall (18511 for the 13420H, 18154 for the 1334U). But the head-to-head data reveals that the 13420H's wins are large and consistent, while the 1334U's wins are small and isolated. For any workload that can use multiple threads, the 13420H is the clear pick. For a power-conscious mobile design where occasional single-core responsiveness is sufficient, the 1334U remains a valid option, but the performance trade-off is significant.