Intel Core Ultra 9 285 vs Intel Processor U300L Comparison

Where Each One Wins

The Intel Core Ultra 9 285 and the Intel Processor U300L occupy entirely different positions in the desktop and mobile processor landscape. The Core Ultra 9 285 is a desktop flagship with 24 cores and 24 threads, built on the Arrow Lake architecture and manufactured on a 3 nm process by TSMC. The U300L is a mobile-focused processor with 5 cores and 6 threads, using the Raptor Lake architecture on Intel's 10 nm process. The benchmark database contains no recorded benchmark scores for the U300L, meaning every measurable performance win belongs to the Core Ultra 9 285.

The Core Ultra 9 285 posts an average benchmark score of 75488 and sits in the 95th percentile of all CPUs tested in the database. Its nearest rivals include the AMD EPYC 8224P at 75582 (0.1% ahead), the AMD EPYC 4545P at 75373 (0.2% behind), the AMD Ryzen 7 PRO 9755X3D at 75716 (0.3% behind), and the AMD Ryzen 7 PRO 9755 at 75738 (0.3% behind). This places the Core Ultra 9 285 squarely among high-end server and workstation parts in aggregate scoring. The U300L, by contrast, has no benchmark entries, an average score of 0, and a 50th percentile placement, which reflects its positioning as a low-power entry processor rather than a performance contender.

The Core Ultra 9 285 wins across every recorded workload category. In Cinebench R23 multi-core it scores 48945, and in single-core it scores 6909. PassMark integer math reaches 164869, floating point math reaches 194988, and data compression reaches 602121. The U300L has no recorded numbers in any of these tests, so the use-case split is stark: any task that relies on multi-threaded throughput, single-thread responsiveness, or computational math is served exclusively by the Core Ultra 9 285 according to the recorded data.

The Verdict

The verdict from the data is unambiguous. The Intel Core Ultra 9 285 is the only option with measured performance in the database, and it delivers top-tier results across the board. Its 95th percentile ranking and average score of 75488 place it among the fastest CPUs recorded. The U300L, with an average score of 0 and no benchmarks, cannot be evaluated on performance grounds from the database. Anyone selecting between these two based on the recorded measurements must choose the Core Ultra 9 285 for any performance-sensitive workload.

The U300L does have a clear structural advantage in power draw and platform cost, though no wattage figures are recorded in the database beyond its 15 W TDP compared to the Core Ultra 9 285's 65 W TDP. It also uses the older Intel Socket 1700 platform rather than the newer Intel Socket 1851. The U300L supports both DDR4 and DDR5 memory, while the Core Ultra 9 285 supports only DDR5. The U300L has a 4.40 GHz boost clock and a 1.20 GHz base clock, versus 5.60 GHz and 2.50 GHz for the Core Ultra 9 285. The Core Ultra 9 285 supports ECC memory; the U300L does not. The Core Ultra 9 285 uses PCIe Gen 5 with 20 lanes, while the U300L uses PCIe Gen 4 with 8 lanes.

For users who need processing capability, the Core Ultra 9 285 is the only choice supported by the data. For users who need a low-power mobile processor with modest specifications, the U300L is the only choice that fits that description. The database does not record any scenario where the U300L outperforms the Core Ultra 9 285.

Head-to-Head Benchmarks

The head-to-head benchmark table in the database is empty, and the U300L has no individual benchmark scores recorded. Therefore, the comparison relies entirely on the Core Ultra 9 285's measured results against its nearest rivals, which are all AMD Epyc and Ryzen PRO processors.

In Cinebench R23 multi-core, the Core Ultra 9 285 scores 48945. In Cinebench R20 multi-core it scores 20556, and in Cinebench R15 multi-core it scores 4933. The single-core results are 6909 in R23, 2901 in R20, and 696 in R15. These numbers indicate a processor that scales strongly across both multi-threaded and single-threaded rendering workloads.

PassMark results reinforce this. The multi-thread score is 56602, and the single-thread score is 4881. Integer math scores 164869, floating point math scores 194988, and extended instructions score 45357. Data encryption scores 46949, data compression scores 602121, and random string sorting scores 73651. Physics scores 3598, and find prime numbers scores 459. The largest raw wins come in data compression and floating point math, where the Core Ultra 9 285 reaches six-figure scores.

Relative to its nearest rivals, the Core Ultra 9 285's aggregate average of 75488 is within 0.3% of the AMD EPYC 8224P, the AMD EPYC 4545P, the AMD Ryzen 7 PRO 9755X3D, and the AMD Ryzen 7 PRO 9755. The delta values are -0.1%, 0.2%, -0.3%, and -0.3% respectively. This means the Core Ultra 9 285 is statistically tied with those four AMD processors in average score, neither decisively ahead nor behind any of them.

The U300L has no recorded benchmark scores, so there are no wins to walk through for that processor. The database shows zero wins for the U300L and zero wins for the Core Ultra 9 285 in the head-to-head table, simply because no head-to-head tests were recorded.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core Ultra 9 285 has 24 cores and 24 threads. The Intel Processor U300L has 5 cores and 6 threads.

Q: What are the boost clock speeds of each processor?

A: The Core Ultra 9 285 boosts to 5.60 GHz, while the U300L boosts to 4.40 GHz. The base clocks are 2.50 GHz and 1.20 GHz respectively.

Q: Does either processor support ECC memory?

A: The Core Ultra 9 285 supports ECC memory. The U300L does not.

Q: What memory types does each processor support?

A: The Core Ultra 9 285 supports DDR5 only. The U300L supports both DDR4 and DDR5.

Q: What is the average benchmark score for each processor?

A: The Core Ultra 9 285 has an average benchmark score of 75488 and sits in the 95th percentile of all CPUs. The U300L has an average score of 0 and sits in the 50th percentile.

Q: What PCIe generation and lane counts do the two processors use?

A: The Core Ultra 9 285 uses PCIe Gen 5 with 20 lanes (CPU only). The U300L uses PCIe Gen 4 with 8 lanes (CPU only).

Architecture Differences

The two processors come from different Intel architecture families. The Core Ultra 9 285 uses the Arrow Lake architecture, specifically the Arrow Lake-S codename, and belongs to the Core Ultra Series 2 generation. It is built on a 3 nm process node at TSMC and integrates 17,800 million transistors on a 243 mm² die. The U300L uses the Raptor Lake architecture with the Raptor Lake-PS codename and belongs to the Intel Processor generation. It is built on a 10 nm process node at Intel, and the database records no transistor count or die size for it.

Cache configurations differ substantially. The Core Ultra 9 285 has 192 KB of L1 cache per core, 3 MB of L2 cache per core, and 36 MB of shared L3 cache. The U300L has 80 KB of L1 cache per core, 1.25 MB of L2 cache per core, and 8 MB of shared L3 cache. Neither processor uses 3D V-Cache.

The integrated graphics differ as well. The Core Ultra 9 285 uses Arc Xe-LPG Graphics with 64 execution units, while the U300L uses UHD Graphics with 48 execution units. The Core Ultra 9 285 supports ECC memory and uses PCIe Gen 5 with 20 lanes, while the U300L does not support ECC and uses PCIe Gen 4 with 8 lanes. The Core Ultra 9 285 is a desktop segment processor on Intel Socket 1851, while the U300L is a mobile segment processor on Intel Socket 1700.

Specification Differences

The recorded specifications show a clear separation between the two parts. The Core Ultra 9 285 has 24 cores and 24 threads; the U300L has 5 cores and 6 threads. The Core Ultra 9 285 has a base clock of 2.50 GHz and a boost clock of 5.60 GHz; the U300L has a base clock of 1.20 GHz and a boost clock of 4.40 GHz. The Core Ultra 9 285 has a TDP of 65 W; the U300L has a TDP of 15 W.

Memory support differs: the Core Ultra 9 285 supports DDR5 only with dual-channel memory and a recorded memory bandwidth of 102.4 GB/s, while the U300L supports both DDR4 and DDR5 with dual-channel memory and no recorded memory bandwidth. The Core Ultra 9 285 supports ECC memory; the U300L does not. PCIe support differs: the Core Ultra 9 285 uses Gen 5 with 20 lanes, while the U300L uses Gen 4 with 8 lanes.

Process technology separates the two as well. The Core Ultra 9 285 is built on a 3 nm node at TSMC with 17,800 million transistors and a 243 mm² die size. The U300L is built on a 10 nm node at Intel with no transistor or die size data recorded. Cache sizes differ: 192 KB L1 per core, 3 MB L2 per core, and 36 MB shared L3 for the Core Ultra 9 285, versus 80 KB L1 per core, 1.25 MB L2 per core, and 8 MB shared L3 for the U300L.

The Core Ultra 9 285 launches with a launch MSRP of $579, while the U300L launches with a launch MSRP of $107. Both processors have locked multipliers. The Core Ultra 9 285 has a part number of SRQD4 and a release date in 2024-12-31, while the U300L has a part number of SRPEKSRPEM and a release date in 2024-04-07. Both are listed as active in production. The Core Ultra 9 285 sits in the 95th percentile of all CPUs with an average benchmark score of 75488, while the U300L sits in the 50th percentile with an average score of 0 and no recorded benchmarks.