Intel Core Ultra 9 285 vs Intel Core Ultra 9 285T Comparison

The Intel Core Ultra 9 285 and the Intel Core Ultra 9 285T share the same core architecture and platform, but the data shows they are distinct products with a clear performance hierarchy. The 285 is the higher-performing part, while the 285T is configured for significantly lower power consumption. This analysis compares the two based strictly on recorded benchmark scores and architectural specifications.

Where Each One Wins

The benchmark data is unambiguous: the Intel Core Ultra 9 285 wins every single recorded benchmark. The head-to-head table shows 17 wins for the 285 and 0 wins for the 285T. There is no workload category where the 285T comes out ahead. The single-threaded PassMark test shows the smallest gap, with the 285 scoring 4881 against 4576 for the 285T, a 6.7% difference. This is the one area where the 285T comes closest to matching the standard part.

The 285T delivers a different type of benefit. Its 35 W TDP compared to 65 W for the 285, combined with a 1.40 GHz base clock versus 2.50 GHz, positions it for systems where heat output and power draw are the primary constraints. The 285T still reaches 5.40 GHz boost, so burst workloads retain most of the performance potential, but sustained multi-core loads show a much larger deficit. For example, the 285 leads by 45.8% in Cinebench R23 multi-core, indicating the 285T cannot sustain high throughput for extended periods.

Architecture Differences

Both processors are built on the Arrow Lake architecture with the Arrow Lake-S codename and belong to the Core Ultra Series 2. They use the same 3 nm process node from TSMC and share identical transistor counts at 17,800 million and a die size of 243 mm². The core configuration is the same: 24 cores and 24 threads. Cache hierarchies match exactly, with 192 KB L1 per core, 3 MB L2 per core, and 36 MB shared L3.

The most significant architectural difference is the power envelope. The 285 has a 65 W TDP, while the 285T drops to 35 W. This directly impacts clock speeds. The 285 has a base clock of 2.50 GHz and a boost clock of 5.60 GHz. The 285T has a base clock of 1.40 GHz and a boost clock of 5.40 GHz. The 0.20 GHz boost clock deficit for the 285T is modest, but the 1.10 GHz base clock gap is substantial and explains the large multi-core differences.

Both parts use the Intel Socket 1851 and support dual-channel DDR5 memory with 102.4 GB/s bandwidth. ECC memory is supported on both. The PCIe interface is identical at Gen 5 with 20 lanes from the CPU. Integrated graphics are the same Arc Xe-LPG with 64 execution units. Neither has an unlocked multiplier. The 285 was released with a launch date of 2024-12-31, while the 285T followed on 2025-01-06. The 285 carries a launch MSRP of $579, and the 285T carries a launch MSRP of $549.

Head-to-Head Benchmarks

The largest performance gap appears in PassMark extended instructions. The 285 scores 45357 against 27477 for the 285T, a 65.1% advantage. This suggests the 285T's reduced power budget heavily impacts AVX-class workloads that draw maximum current. Data compression shows a similarly large gap at 56.7%, with the 285 at 602121 and the 285T at 384140. Random string sorting follows at 54.4%, with scores of 73651 and 47695.

The Cinebench suite shows consistent 45.8% deltas across all tests. Cinebench R15 multi-core has the 285 at 4933 and the 285T at 3384. Cinebench R20 multi-core shows 20556 versus 14100. Cinebench R23 multi-core, the most commonly cited metric, shows 48945 against 33573. Single-core Cinebench tests also show the same 45.8% delta, which is notable because single-core performance usually scales more closely with boost clock. The 285T's 5.40 GHz boost should narrow the gap, but the recorded data shows the same margin as multi-core tests. This indicates the 285T's lower base clock and power limits affect even short single-thread bursts in the Cinebench test methodology.

Data encryption shows a 46.4% delta, with the 285 at 46949 and the 285T at 32061. Floating point math shows a 41.4% delta, with scores of 194988 and 137923. The PassMark multithread test shows a 41.7% delta, with the 285 at 56602 and the 285T at 39931. Integer math shows the smallest multi-core gap at 24.5%, with the 285 at 164869 and the 285T at 132433. Physics simulation shows a 26.6% delta, with scores of 3598 and 2842. Prime number finding shows a 33% delta, with the 285 at 459 and the 285T at 345.

The PassMark single-thread tests show the narrowest margin at 6.7%. The 285 scores 4881 and the 285T scores 4576. This is the only benchmark where the two parts perform comparably. It aligns with the boost clock specifications, where the 285T trails by only 0.20 GHz. For lightly threaded workloads that fit within short boost windows, the 285T retains most of the standard part's capability.

The average benchmark score reflects the overall gap. The 285 averages 75488, while the 285T averages 51310. The 285 sits in the 95th percentile of all CPUs, while the 285T sits in the 91st percentile. The nearest rivals for the 285 are AMD EPYC 8224P at 75582, AMD Ryzen 7 PRO 9755X3D at 75716, AMD Ryzen 7 PRO 9755 at 75738, and AMD EPYC 4545P at 75373. All of these are within 0.3% of the 285's average score. The 285T's nearest rivals include the Intel Core i9-14900T at 51015, Intel Core i7-13850HX at 50761, AMD Ryzen 9 5900XT at 50718, and Intel Core i9-13900F at 51730. The 285T sits 0.6% above the i9-14900T and 1.2% above the Ryzen 9 5900XT.

The Verdict

The data supports a straightforward conclusion. The Intel Core Ultra 9 285 is the superior processor in every measured benchmark. It outperforms the 285T by margins ranging from 6.7% in single-threaded PassMark to 65.1% in extended instructions. Its 95th percentile ranking versus 91st for the 285T confirms its higher standing in the overall CPU landscape. The 285 also has a 5.60 GHz boost clock compared to 5.40 GHz for the 285T, and its 65 W TDP allows sustained high-frequency operation.

The Intel Core Ultra 9 285T serves a specific purpose that the benchmark scores do not directly capture. Its 35 W TDP makes it suitable for compact desktop systems with limited cooling capacity. The 285T still provides 24 cores, 36 MB of L3 cache, and the same Arc Xe-LPG integrated graphics. It reaches 5.40 GHz boost, so interactive responsiveness should be close to the standard part. The 6.7% single-thread PassMark delta supports that claim.

The choice between these two rests on the power budget rather than performance. The 285 delivers the full capability of the Arrow Lake design. The 285T trades 45.8% multi-core throughput for a 30 W lower TDP. For workloads that run briefly and then idle, the 285T's boost clock keeps most of the experience intact. For sustained rendering, compilation, or simulation, the 285 is the only rational pick from the data.

FAQ

Q: Which processor has a higher boost clock?

A: The Intel Core Ultra 9 285 has a boost clock of 5.60 GHz, while the Intel Core Ultra 9 285T has a boost clock of 5.40 GHz.

Q: What is the TDP difference between the two?

A: The Intel Core Ultra 9 285 has a TDP of 65 W, and the Intel Core Ultra 9 285T has a TDP of 35 W.

Q: Do both processors have the same core and thread counts?

A: Yes, both have 24 cores and 24 threads.

Q: How large is the single-thread performance gap?

A: In the PassMark single-thread test, the 285 scores 4881 and the 285T scores 4576, a 6.7% delta.

Q: What is the largest benchmark margin between them?

A: The largest margin is in PassMark extended instructions, where the 285 leads by 65.1% with a score of 45357 versus 27477.

Q: Are the integrated graphics the same on both?

A: Yes, both use Arc Xe-LPG Graphics with 64 execution units.

Specification Differences

| Specification | Intel Core Ultra 9 285 | Intel Core Ultra 9 285T |

|---|---|---|

| Base Clock | 2.50 GHz | 1.40 GHz |

| Boost Clock | 5.60 GHz | 5.40 GHz |

| TDP | 65 W | 35 W |

| Launch MSRP | $579 | $549 |

| Release Date | 2024-12-31 | 2025-01-06 |

| Part Number | SRQD4 | SRQD3 |

| Percentile vs All CPUs | 95 | 91 |

| Average Benchmark Score | 75488 | 51310 |

| Nearest Rival 1 | AMD EPYC 8224P (75582, -0.1%) | Intel Core i9-14900T (51015, 0.6%) |

| Nearest Rival 2 | AMD Ryzen 7 PRO 9755X3D (75716, -0.3%) | Intel Core i9-13900F (51730, -0.8%) |

| Nearest Rival 3 | AMD Ryzen 7 PRO 9755 (75738, -0.3%) | Intel Core i7-13850HX (50761, 1.1%) |

| Nearest Rival 4 | AMD EPYC 4545P (75373, 0.2%) | AMD Ryzen 9 5900XT (50718, 1.2%) |

All other specifications are identical between the two: 24 cores, 24 threads, 3 nm TSMC process, 17,800 million transistors, 243 mm² die size, 192 KB L1 per core, 3 MB L2 per core, 36 MB shared L3, dual-channel DDR5, 102.4 GB/s memory bandwidth, ECC support, PCIe Gen 5 with 20 lanes, Arc Xe-LPG Graphics 64EU, Intel Socket 1851, and locked multipliers.