Intel Core Ultra 7 270HX Plus vs Intel Core Ultra 9 285T Comparison

Head-to-Head Benchmarks

The head-to-head data is unequivocal: the Intel Core Ultra 7 270HX Plus wins 16 of 17 benchmark comparisons against the Intel Core Ultra 9 285T. The sole exception is PassMark integer math, where the Ultra 9 285T takes a 7.5% lead. Every Cinebench test, across R15, R20, and R23, shows a nearly identical margin: the 270HX Plus leads by 24.8% in multicore and 24.9% in single-core workloads. In Cinebench R23 multicore, the 270HX Plus scores 41,913 against 33,573 for the 285T, a difference of roughly 8,340 points.

The PassMark suite reveals where the 270HX Plus excels most dramatically. Its largest margin comes in extended instructions, scoring 39,283 versus 27,477, a 43% advantage. Prime number finding follows closely, with 482 versus 345, a 39.7% gap. Physics simulation shows a 35.2% lead (3,843 versus 2,842). Data compression favors the 270HX Plus by 28.4% (493,179 versus 384,140), while random string sorting shows a 25.8% edge (60,020 versus 47,695).

The 270HX Plus also wins the multithreaded PassMark test by 20.9% (48,270 versus 39,931) and floating-point math by 18.6% (163,567 versus 137,923). Data encryption shows a 17.9% advantage (37,813 versus 32,061). The narrowest victory for the 270HX Plus is in PassMark single-thread performance, where it scores 4,764 versus 4,576, a 4.1% lead. This pattern indicates that the 270HX Plus does not merely edge ahead in isolated tests; it dominates across a broad range of computational tasks.

Architecture Differences

The two processors share fundamental silicon. Both use a 3 nm TSMC process, both pack 17,800 million transistors on a 243 mm² die, and both integrate Arc Xe-LPG Graphics with 64 execution units. The codenames differ: the 270HX Plus belongs to Arrow Lake-HX Refresh, while the 285T uses the original Arrow Lake-S architecture. The generation field lists the 270HX Plus as Ultra 7 (Arrow Lake-HX) and the 285T as Ultra 9 (Arrow Lake).

Core counts differ substantially. The 270HX Plus has 20 cores and 20 threads, while the 285T has 24 cores and 24 threads. Neither uses Hyper-Threading, so thread count equals core count for both. The 285T therefore has 4 more physical cores, yet the 270HX Plus still wins most benchmarks, which points to clock speed as the deciding factor. The 270HX Plus has a base clock of 2.40 GHz and a boost clock of 5.30 GHz. The 285T has a base clock of 1.40 GHz and a boost clock of 5.40 GHz. The 285T boosts slightly higher, but its base clock is 1.0 GHz lower, indicating a much lower sustained operating point.

Cache configurations also diverge. Both have 192 KB L1 per core and 3 MB L2 per core, but the shared L3 cache differs: the 270HX Plus has 30 MB, while the 285T has 36 MB. The 285T compensates for its lower clocks with 6 MB more L3 cache, yet this does not translate into benchmark wins outside integer math.

The 270HX Plus has a TDP of 55 watts and uses Intel BGA 2114, a mobile socket. The 285T has a TDP of 35 watts and uses Intel Socket 1851 for desktop systems. The 270HX Plus has an unlocked multiplier; the 285T does not. ECC memory support is absent on the 270HX Plus but present on the 285T. Both support DDR5 over a dual-channel memory bus with 102.4 GB/s bandwidth, and both expose Gen 5 PCIe with 20 CPU lanes. Release dates differ: the 285T launched on 2025-01-06, while the 270HX Plus arrived on 2026-03-16. The 285T carries a launch MSRP of $549; no MSRP is recorded for the 270HX Plus.

Where Each One Wins

The 270HX Plus wins in every Cinebench test, every PassMark encryption, compression, extended instruction, prime number, floating-point, multithread, physics, random string sorting, and single-thread test. It is the clear choice for rendering, simulation, data compression, and general productivity. Its 24.8% to 24.9% Cinebench margins are uniform across single and multicore, which suggests the higher base clock and boost clock deliver consistent gains regardless of thread count.

The 285T wins exactly one benchmark: PassMark integer math, scoring 132,433 versus 122,449. This 7.5% advantage is the only recorded instance where the 285T outperforms the 270HX Plus. The result is notable because the 285T has 4 additional cores and 6 MB more L3 cache, which may help in integer-heavy workloads that scale with core count and cache capacity. However, this single win does not offset the broader pattern.

For workloads that rely on floating-point math, data compression, or encryption, the 270HX Plus is decisively ahead. For physics simulation, the 35.2% margin is substantial. For extended instructions, the 43% gap is the largest of any test. The 285T's higher core count does not produce wins in these areas, indicating that the 270HX Plus's clock speed advantage overrides the core deficit.

The 285T's lower TDP of 35 watts versus 55 watts suggests it is designed for power-constrained desktop environments, but the benchmark data does not show a performance benefit from that efficiency. The 270HX Plus, despite being a mobile part with a higher TDP, delivers superior performance in nearly every measured task.

FAQ

Q: Which processor has more cores, the Ultra 7 270HX Plus or the Ultra 9 285T?

A: The Ultra 9 285T has 24 cores and 24 threads, while the Ultra 7 270HX Plus has 20 cores and 20 threads.

Q: How much faster is the Ultra 7 270HX Plus in Cinebench R23 multicore?

A: The 270HX Plus scores 41,913 versus 33,573 for the 285T, a 24.8% lead.

Q: In which benchmark does the Ultra 9 285T beat the Ultra 7 270HX Plus?

A: The 285T wins PassMark integer math with 132,433 versus 122,449, a 7.5% margin.

Q: What is the clock speed difference between the two processors?

A: The 270HX Plus has a base clock of 2.40 GHz and a boost clock of 5.30 GHz. The 285T has a base clock of 1.40 GHz and a boost clock of 5.40 GHz.

Q: Do both processors use the same manufacturing process?

A: Yes, both use a 3 nm TSMC process with 17,800 million transistors on a 243 mm² die.

Q: Does the Ultra 9 285T support ECC memory?

A: Yes, the 285T supports ECC memory, while the Ultra 7 270HX Plus does not.

Specification Differences

The two processors differ in core count (20 versus 24), base clock (2.40 GHz versus 1.40 GHz), boost clock (5.30 GHz versus 5.40 GHz), TDP (55 watts versus 35 watts), and socket (Intel BGA 2114 versus Intel Socket 1851). The architecture field is null for the 270HX Plus, while the 285T lists Arrow Lake. Codename differs (Arrow Lake-HX Refresh versus Arrow Lake-S). Generation differs (Ultra 7 Arrow Lake-HX versus Ultra 9 Arrow Lake). L3 cache is 30 MB for the 270HX Plus and 36 MB for the 285T. ECC memory support is absent on the 270HX Plus and present on the 285T. Market segment differs (Mobile versus Desktop). Release dates differ (2026-03-16 versus 2025-01-06). The multiplier is unlocked on the 270HX Plus and locked on the 285T. Part numbers differ (SADST versus SRQD3). The 285T has a recorded launch MSRP of $549; no launch MSRP is recorded for the 270HX Plus.

Identical specifications include process node (3 nm), foundry (TSMC), transistor count (17,800 million), die size (243 mm²), L1 cache (192 KB per core), L2 cache (3 MB per core), memory support (DDR5), memory bus (dual-channel), memory bandwidth (102.4 GB/s), PCIe (Gen 5, 20 lanes CPU only), integrated graphics (Arc Xe-LPG Graphics 64EU), and production status (Active).

The Verdict

The benchmark data directs a clear choice toward the Intel Core Ultra 7 270HX Plus for any user prioritizing raw performance. It wins 16 of 17 head-to-head tests, with margins ranging from 4.1% in single-thread to 43% in extended instructions. Its Cinebench results are uniformly 24.8% to 24.9% ahead, which indicates consistent superiority in both lightly threaded and heavily threaded rendering workloads. The 270HX Plus also leads in PassMark multithread by 20.9% and in physics by 35.2%, making it the stronger pick for simulation and content creation.

The Intel Core Ultra 9 285T offers a single recorded advantage: PassMark integer math by 7.5%. It also provides 4 additional cores, 6 MB more L3 cache, ECC memory support, a lower 35 watt TDP, and a desktop socket with a locked multiplier. For workloads that specifically depend on integer arithmetic and benefit from extra cache and cores, the 285T has a measurable edge. Its lower TDP also positions it for systems where power draw is a constraint.

However, the overall average benchmark score tells the same story: the 270HX Plus averages 61,834, while the 285T averages 51,310. The nearest rival for the 270HX Plus is the Intel Core i9-13900KF with an average score of 61,841, a delta of 0%. The 285T's nearest rival is the Intel Core i9-14900T at 51,015, a delta of 0.6%. The percentile rankings place the 270HX Plus at 93 versus 91 for the 285T.

Users who need maximum rendering performance, data compression, or floating-point throughput should select the 270HX Plus. Users who require ECC memory, a lower TDP, or integer math throughput should consider the 285T. The data does not support the 285T as the faster processor overall; it is a specialized alternative with a narrower set of strengths.