Intel Core i9-12900T vs Intel Core Ultra 5 235H Comparison

Head-to-Head Benchmarks

The recorded data shows a clear overall victory for the Intel Core Ultra 5 235H, which wins 14 of the 17 head-to-head benchmark comparisons. The Core i9-12900T takes only 3 wins, but those wins are decisive in their respective workloads. The most striking margin appears in the PassMark find prime numbers test, where the Ultra 5 235H scores 239 against the i9-12900T's 116, a 106% advantage. That result indicates a fundamental difference in how the two processors handle integer-heavy, branch-intensive workloads.

In the Cinebench suite, the Ultra 5 235H is consistently ahead across all six tests. The multicore results show a 4.4% lead in Cinebench R15 (2580 vs 2472), a 4.4% lead in R20 (10751 vs 10301), and a 4.4% lead in R23 (25598 vs 24528). Single-core performance follows the same pattern, with the Ultra 5 235H ahead by 4.6% in R15 (364 vs 348), 4.3% in R20 (1517 vs 1454), and 4.4% in R23 (3613 vs 3462). These are modest but consistent gains across the board, suggesting that the newer architecture delivers a uniform uplift in rendering workloads rather than a specialized edge.

The PassMark suite reveals a more varied picture. The Ultra 5 235H dominates in floating-point math, scoring 93509 against 75741, a 23.5% advantage. It also leads by 16.5% in extended instructions (23354 vs 20054), by 11.4% in data encryption (23121 vs 20750), and by 9.6% in physics (1985 vs 1811). The single-thread score shows a 14.4% gap in favor of the Ultra 5 235H (4359 vs 3810), which is the largest single-core margin in the entire dataset.

However, the i9-12900T strikes back in specific areas. The largest defeat for the Ultra 5 235H comes in integer math, where the i9-12900T scores 108211 versus 74247, a 31.4% advantage. Data compression also favors the older chip, with a score of 345021 against 301979, a 12.5% lead. Random string sorting goes to the i9-12900T as well, 39771 versus 36208, a 9% margin. These wins suggest that the i9-12900T's higher thread count and larger shared cache provide tangible benefits for certain data manipulation tasks.

The multithread score is remarkably close, with the Ultra 5 235H edging ahead by just 1.7% (30091 vs 29601). Given that the i9-12900T has 16 cores and 24 threads against the Ultra 5 235H's 14 cores and 14 threads, this near-tie in the aggregate multithread metric highlights how much more efficient the newer chip is per thread.

Where Each One Wins

The Ultra 5 235H is the clear choice for single-threaded and lightly threaded workloads. Its 14.4% lead in PassMark single-thread performance and 4.3-4.6% lead across all Cinebench single-core tests means that everyday responsiveness, office applications, and lightly threaded creative tools will feel noticeably faster. The 23.5% advantage in floating-point math also points to superior performance in scientific simulations, 3D rendering, and any workload that relies heavily on vectorized arithmetic.

The encryption and extended instruction results are also strongly in favor of the Ultra 5 235H. A 16.5% lead in extended instructions suggests that modern SIMD workloads, including media encoding and certain AI inference tasks, will run substantially faster. The 11.4% encryption advantage indicates better performance for secure communication, VPN traffic, and disk encryption.

The i9-12900T wins in three specific areas that are all related to its larger thread pool and 30 MB of shared L3 cache. Integer math is its strongest showing, with a 31.4% lead. This matters for database operations, compression algorithms, and any integer-heavy computation. Data compression, where it leads by 12.5%, is a direct benefit for file archiving and backup workflows. Random string sorting, with its 9% lead, is relevant for sorting algorithms in data processing pipelines.

For purely multithreaded rendering workloads, the two chips are nearly equivalent. The Cinebench R23 multicore difference is only 4.4%, and the PassMark multithread difference is just 1.7%. Users who primarily run Cinebench-style workloads will see a modest but real advantage with the Ultra 5 235H, but the i9-12900T remains competitive in aggregate throughput.

Architecture Differences

The two processors represent different generations and design philosophies. The Ultra 5 235H is built on Arrow Lake-H, using a 3 nm process from TSMC, while the i9-12900T uses Alder Lake-S on Intel's 10 nm process. The die size for the i9-12900T is recorded at 215 mm², while no die size is listed for the Ultra 5 235H. The process node difference explains much of the efficiency gap, as the newer chip achieves higher performance while drawing less power.

Core configurations differ significantly. The Ultra 5 235H has 14 cores and 14 threads, meaning it does not use simultaneous multithreading. The i9-12900T has 16 cores and 24 threads, which means 8 of its cores are efficiency cores that do support hyperthreading. This explains why the i9-12900T can win in integer math and compression despite losing most other benchmarks: more threads and more shared cache help those specific workloads.

Cache hierarchy is notably different. The Ultra 5 235H has 192 KB of L1 cache per core and 3 MB of L2 cache per core, with 18 MB of shared L3. The i9-12900T has 80 KB of L1 per core and 1.25 MB of L2 per core, but a larger 30 MB shared L3. The larger L3 on the i9-12900T likely contributes to its data compression and random string sorting wins, as those workloads benefit from keeping larger working sets in cache.

Memory support also diverges. The Ultra 5 235H supports DDR5 and LPDDR5X, with a recorded memory bandwidth of 102.4 GB/s. The i9-12900T supports both DDR4 and DDR5, with no bandwidth figure recorded. The newer chip's exclusive reliance on DDR5 and LPDDR5X means it is optimized for high-bandwidth memory, while the older chip retains compatibility with DDR4 for cost-sensitive builds.

PCIe lanes differ as well. The Ultra 5 235H provides 8 CPU lanes of Gen 5, while the i9-12900T offers 20 Gen 5 lanes. This gives the desktop chip more room for expansion, multiple GPUs, or high-speed storage. The integrated graphics also differ: the Ultra 5 235H uses Arc Graphics 140T, while the i9-12900T uses UHD Graphics 770. No benchmark data is recorded for either iGPU, so their relative performance is not quantified here.

The i9-12900T has an unlocked multiplier, while the Ultra 5 235H does not. This means the desktop chip can be overclocked, though its 35 W TDP suggests a power-limited design. The Ultra 5 235H has a 28 W TDP, indicating a more power-efficient mobile part. The i9-12900T's base clock is listed as 1400 MHz with a boost of 4.90 GHz, while the Ultra 5 235H has a base of 2.40 GHz and a boost of 5.00 GHz. The higher boost clock on the newer chip aligns with its single-core advantages.

The Verdict

From the recorded data, the Intel Core Ultra 5 235H is the superior processor for the majority of workloads. Its 14 out of 17 head-to-head wins include all Cinebench tests, all single-thread tests, and most PassMark categories. Users who prioritize rendering, scientific computing, encryption, and general desktop responsiveness should choose the Ultra 5 235H without hesitation.

The i9-12900T retains specific advantages that should not be ignored. Its 31.4% lead in integer math, 12.5% lead in data compression, and 9% lead in random string sorting make it the better option for workloads that are heavily integer-oriented or require large data set manipulation. If the primary use case involves database processing, file archiving, or sorting large datasets, the i9-12900T is the data-supported choice.

For mixed workloads, the decision is less clear-cut. The multithread scores are nearly identical, with only 1.7% separating the two chips. The i9-12900T's 24 threads and 30 MB of L3 cache make it a strong contender for heavily threaded server-like tasks, while the Ultra 5 235H's superior single-thread and floating-point performance makes it better for interactive and simulation workloads.

The platform differences are also relevant. The Ultra 5 235H is a mobile chip on Intel BGA 2049, while the i9-12900T is a desktop chip on Socket 1700. The mobile part offers LPDDR5X support and a lower 28 W TDP, making it suitable for laptops and compact systems. The desktop part offers more PCIe lanes and an unlocked multiplier, making it more flexible for advanced users. The i9-12900T has a recorded launch MSRP of $489, while no launch MSRP is listed for the Ultra 5 235H.

Given the data, the Ultra 5 235H is the better all-round performer and the recommended choice for most users. The i9-12900T is the specialist pick for integer-heavy data processing and compression tasks. Both processors hold an 85th percentile ranking across all CPUs, indicating they are both strong performers in the broader market.

FAQ

Q: Which processor has a higher single-core score?

A: The Intel Core Ultra 5 235H leads in PassMark single-thread with 4359 against 3810 for the i9-12900T, a 14.4% advantage. It also wins all Cinebench single-core tests by margins between 4.3% and 4.6%.

Q: How do the two processors compare in multithreaded rendering?

A: In Cinebench R23 multicore, the Ultra 5 235H scores 25598 versus 24528 for the i9-12900T, a 4.4% lead. The PassMark multithread score is closer, with the Ultra 5 235H at 30091 and the i9-12900T at 29601, a 1.7% difference.

Q: Where does the i9-12900T beat the Ultra 5 235H?

A: The i9-12900T wins in integer math (108211 vs 74247, a 31.4% lead), data compression (345021 vs 301979, a 12.5% lead), and random string sorting (39771 vs 36208, a 9% lead).

Q: What are the core and thread counts for each processor?

A: The Ultra 5 235H has 14 cores and 14 threads. The i9-12900T has 16 cores and 24 threads. The i9-12900T uses simultaneous multithreading on some cores, while the Ultra 5 235H does not.

Q: How much L3 cache does each chip have?

A: The Ultra 5 235H has 18 MB of shared L3 cache. The i9-12900T has 30 MB of shared L3 cache. The larger L3 on the i9-12900T likely contributes to its wins in data compression and sorting.

Q: What process nodes and foundries are used?

A: The Ultra 5 235H uses a 3 nm process from TSMC. The i9-12900T uses a 10 nm process from Intel. The newer node on the Ultra 5 235H helps explain its higher performance at a lower 28 W TDP versus the i9-12900T's 35 W TDP.