Intel Core Ultra 5 235HX vs Intel Core Ultra 9 285T Comparison

The Intel Core Ultra 5 235HX and Intel Core Ultra 9 285T are two very different Arrow Lake processors that end up in a surprisingly close fight. The 235HX is a 14-core mobile part designed for high-performance laptops, while the 285T is a 24-core desktop chip with a 35W TDP aimed at compact, power-efficient systems. Benchmark results show the mobile chip winning the majority of tests, but the desktop part takes decisive victories in specific workloads. This analysis breaks down exactly where each processor excels based solely on the benchmark data.

Head-to-Head Benchmarks

The most striking pattern in the data is the 235HX’s dominance in single-threaded and lightly-threaded workloads. Across the entire Cinebench suite, the 235HX wins every test by a consistent margin of roughly 3.4% to 3.6%. In Cinebench R23 single-core, it scores 4903 against the 285T’s 4739, a 3.5% lead. The same story plays out in Cinebench R15 single-core (494 vs 477, +3.6%) and Cinebench R20 single-core (2059 vs 1990, +3.5%). This consistency suggests the 235HX has a meaningful clock-speed advantage in single-threaded scenarios, despite the 285T having a higher listed boost clock of 5.40 GHz versus 5.10 GHz. The benchmark results are what matter, and they clearly favor the mobile chip.

Multi-core Cinebench results tell a similar tale, but with narrower margins. The 235HX wins Cinebench R23 multi-core with 34731 points versus 33573 for the 285T, a 3.4% advantage. In Cinebench R20 multi-core, the gap is 3.5% (14587 vs 14100), and in R15 multi-core it’s 3.4% (3500 vs 3384). This is unexpected given the 285T has 24 cores and threads versus 14 for the 235HX. The data shows that raw core count does not translate into a multi-core win here; the 235HX’s higher base clock of 2.90 GHz versus 1.40 GHz likely compensates for the core deficit in these specific workloads.

PassMark results reveal a more nuanced picture. The 235HX wins the majority of PassMark tests, including a massive 26.7% lead in extended instructions (34808 vs 27477) and an 11% lead in data compression (426417 vs 384140). It also wins data encryption by 2% (32697 vs 32061), find prime numbers by 4.6% (361 vs 345), random string sorting by 6.8% (50929 vs 47695), and multithread by 2.3% (40849 vs 39931). The single-thread PassMark score also goes to the 235HX at 4683 versus 4576, a 2.3% margin.

However, the 285T strikes back hard in three specific areas. Its biggest win is in integer math, where it scores 132433 against the 235HX’s 97177, a massive 26.6% advantage. It also wins floating point math by 5.9% (137923 vs 129819) and physics by 10.3% (2842 vs 2550). These are significant victories that show the 285T’s extra cores and threads can be leveraged effectively in workloads that scale with parallel integer and floating-point operations. Overall, the 235HX wins 14 of 17 head-to-head tests, but the three wins for the 285T are substantial enough to matter for specific use cases.

The Verdict

The data points to the Intel Core Ultra 5 235HX as the stronger all-around performer. It wins the entire Cinebench suite, all single-threaded tests, and the majority of PassMark workloads. Its average benchmark score of 52073 places it in the 91st percentile of all CPUs, with its nearest rival being the AMD EPYC 8124P at 52121 (-0.1% delta). The 285T has an average score of 51310, also in the 91st percentile, with its closest competitor being the Intel Core i9-14900T at 51015 (+0.6% delta). The 235HX’s overall average is roughly 1.5% higher than the 285T’s.

For most users, the 235HX is the better choice. It delivers superior single-threaded performance, faster data compression and encryption, and better extended instruction throughput. The 285T’s wins are concentrated in pure math workloads: integer math, floating point math, and physics. If your primary applications are heavily dependent on integer calculations or physics simulations, the 285T’s 26.6% lead in integer math and 10.3% lead in physics could be decisive. Otherwise, the 235HX’s consistency across the board makes it the safer pick.

The form factor difference also matters. The 235HX is a mobile processor on Intel BGA 2114, while the 285T is a desktop chip on Intel Socket 1851. The 285T has a lower 35W TDP versus 55W for the 235HX, which is notable for a desktop part. The 235HX is unlocked, while the 285T is not. These are specification differences that affect system design, but the benchmark data shows the mobile chip holding its own and often beating the desktop part.

Where Each One Wins

The Intel Core Ultra 5 235HX wins in every scenario that involves general productivity, content creation, and everyday computing. Its Cinebench sweeps indicate that rendering tasks, video editing, and 3D modeling workloads will run slightly faster on the 235HX. The 11% lead in data compression makes it better for file archiving and backup tasks. The 2% lead in data encryption suggests better performance in security-related workloads and VPN traffic handling. The 26.7% lead in extended instructions points to advantages in SIMD-heavy applications like scientific computing and certain audio/video codecs. The 235HX also wins PassMark multithread by 2.3%, reinforcing its overall multi-threaded competence.

The Intel Core Ultra 9 285T wins in math-heavy workloads. The 26.6% lead in integer math is its most impressive result, making it the clear choice for applications like financial modeling, cryptography, or any software that performs large numbers of integer operations. The 10.3% lead in physics makes it better for physics simulations, which could include scientific research, engineering analysis, or certain game physics calculations. The 5.9% lead in floating point math means it’s better for tasks like scientific computing, 3D rendering that relies on floating-point precision, and machine learning inference workloads that use FP32 or FP64 operations.

The 285T’s wins are fewer but more specialized. For a user whose primary applications are those three categories, the 285T is the better processor. For everyone else, the 235HX’s broader set of wins makes it the more versatile option. The 235HX also wins the passmark_single_thread test at 4683 versus 4576, which is relevant for users who run many lightweight tasks or applications that don’t scale well with multiple cores.

FAQ

Q: Which processor has a higher single-core Cinebench R23 score?

A: The Intel Core Ultra 5 235HX scores 4903 in Cinebench R23 single-core, which is 3.5% higher than the Intel Core Ultra 9 285T’s 4739.

Q: Is the Intel Core Ultra 9 285T better in multi-core workloads?

A: No. Despite having 24 cores versus 14, the 285T loses in Cinebench R23 multi-core (33573 vs 34731) and PassMark multithread (39931 vs 40849). The 235HX leads by 3.4% and 2.3%, respectively.

Q: What is the biggest performance gap between the two processors?

A: The largest delta is in PassMark integer math, where the Intel Core Ultra 9 285T scores 132433 against the 235HX’s 97177, a 26.6% advantage. The second-largest is in extended instructions, where the 235HX leads by 26.7% (34808 vs 27477).

Q: Which processor has better data compression performance?

A: The Intel Core Ultra 5 235HX wins PassMark data compression with a score of 426417, which is 11% higher than the 285T’s 384140.

Q: Do both processors have the same architecture?

A: Both are based on Arrow Lake architecture and use a 3 nm process node from TSMC. They share the same 17,800 million transistors and 243 mm² die size.

Q: Which processor is better for physics simulations?

A: The Intel Core Ultra 9 285T wins PassMark physics with a score of 2842, which is 10.3% higher than the 235HX’s 2550.

Architecture Differences

Both processors are built on Arrow Lake, but they are distinct variants. The 235HX uses the Arrow Lake-HX codename, designed for mobile platforms, while the 285T uses Arrow Lake-S, intended for desktop systems. Both use a 3 nm process node from TSMC, and both have the same transistor count of 17,800 million and die size of 243 mm². The core configurations differ significantly: the 235HX has 14 cores and 14 threads, while the 285T has 24 cores and 24 threads. Neither processor uses hyper-threading, so core count equals thread count.

Cache hierarchies are similar but not identical. Both have 192 KB of L1 cache per core and 3 MB of L2 cache per core. The shared L3 cache differs, with the 235HX offering 24 MB and the 285T offering 36 MB. This 12 MB difference in L3 cache could explain some of the 285T’s advantages in math-heavy workloads, as more cache can keep larger datasets closer to the cores.

The integrated graphics also differ. The 235HX includes Arc Xe-LPG Graphics with 48 execution units, while the 285T has Arc Xe-LPG Graphics with 64 execution units. Both support DDR5 memory on a dual-channel bus with a bandwidth of 102.4 GB/s. The 285T supports ECC memory, while the 235HX does not. Both use PCIe Gen 5 with 20 lanes from the CPU. The 285T has a launch MSRP of $549. The 235HX has no listed launch MSRP.

Specification Differences

The most obvious difference is the core count: 14 cores for the 235HX versus 24 for the 285T. Thread counts match core counts at 14 and 24, respectively. Base clocks are drastically different, with the 235HX at 2.90 GHz and the 285T at 1.40 GHz. Boost clocks are closer, at 5.10 GHz for the 235HX and 5.40 GHz for the 285T. The TDP also differs: 55W for the 235HX and 35W for the 285T.

The sockets are incompatible. The 235HX uses Intel BGA 2114, which is a soldered mobile socket, while the 285T uses Intel Socket 1851 for desktop motherboards. The 235HX has an unlocked multiplier, while the 285T is locked. The 235HX is classified as a mobile market segment part, while the 285T is desktop. The 285T supports ECC memory; the 235HX does not. The integrated graphics differ as noted, with the 285T having more execution units. The 285T was released on 2025-01-06, while the 235HX followed on 2025-01-12. The part numbers are SRVFL for the 235HX and SRQD3 for the 285T.