Intel Core Ultra 5 225T vs Intel Core Ultra 9 285 Comparison

Intel Core Ultra 5 225T and Intel Core Ultra 9 285 are both desktop processors from Intel’s Core Ultra Series 2, built on the same Arrow Lake architecture and 3 nm process node. The data shows a clear hierarchy between the two, with the Ultra 9 285 winning every single benchmark in the database. The Ultra 5 225T is positioned as a more modest 10-core part, while the Ultra 9 285 is a 24-core flagship. This analysis breaks down the recorded measurements, comparing their performance, specifications, and architectural differences to determine where each processor fits.

Head-to-Head Benchmarks

The benchmark results are unambiguous: the Intel Core Ultra 9 285 outperforms the Intel Core Ultra 5 225T in all 17 recorded tests. The largest margin appears in PassMark integer math, where the Ultra 9 285 scores 164,869 against 59,543 for the Ultra 5 225T, a delta of -63.9% from the perspective of the smaller chip. This indicates a massive advantage in arithmetic-heavy workloads.

Cinebench multi-core tests show a consistent pattern. In Cinebench R15 multi-core, the Ultra 9 285 scores 4,933 versus 2,214 for the Ultra 5 225T, a 55.1% difference. The same delta appears in Cinebench R20 multi-core (20,556 vs 9,227) and Cinebench R23 multi-core (48,945 vs 21,971). The consistency of this 55.1% gap across all three Cinebench multi-core versions suggests the performance scaling is directly tied to the core count difference, which is 24 cores versus 10 cores.

Single-core performance tells a similar story, though with a smaller gap. In Cinebench R23 single-core, the Ultra 9 285 scores 6,909 while the Ultra 5 225T scores 3,101, a 55.1% difference. PassMark single-thread shows a much narrower margin: 4,881 versus 4,348, a 10.9% difference. This indicates that while the Ultra 9 285 has a higher boost clock of 5.60 GHz versus 4.90 GHz, the per-core efficiency is relatively close, and the Ultra 5 225T is not drastically behind in lightly threaded tasks.

The PassMark suite reveals where the Ultra 9 285’s extra cores and cache matter most. Data compression shows a 61.1% gap (602,121 vs 233,998), data encryption a 61% gap (46,949 vs 18,289), and random string sorting a 60.9% gap (73,651 vs 28,774). Floating point math also shows a large 57.6% difference (194,988 vs 82,751). The smallest wins for the Ultra 9 285 outside of single-thread are in physics (3,598 vs 2,053, a 42.9% gap) and finding prime numbers (459 vs 284, a 38.1% gap). These results confirm that the Ultra 9 285 delivers roughly double the throughput in most multi-threaded scenarios, while the Ultra 5 225T remains competitive only in single-thread efficiency.

FAQ

Q: How much faster is the Intel Core Ultra 9 285 in multi-core workloads?

A: In Cinebench R23 multi-core, the Ultra 9 285 scores 48,945 versus 21,971 for the Ultra 5 225T, a 55.1% advantage. The same delta appears in Cinebench R15 and R20 multi-core, indicating consistent multi-core scaling.

Q: Does the Ultra 5 225T win any benchmark?

A: No. The database records 17 head-to-head tests, and the Intel Core Ultra 9 285 wins all of them. The Ultra 5 225T has zero wins.

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

A: The smallest gap is in PassMark single-thread, where the Ultra 9 285 scores 4,881 versus 4,348 for the Ultra 5 225T, a 10.9% difference. This is far smaller than the multi-core gaps.

Q: How do their average benchmark scores compare?

A: The Ultra 9 285 has an average benchmark score of 75,488, while the Ultra 5 225T averages 30,468. This puts the Ultra 9 285 in the 95th percentile of all CPUs, versus the 82nd percentile for the Ultra 5 225T.

Q: What are the nearest rivals for each processor?

A: The Ultra 5 225T sits near the Intel Core i9-11980HK (0.2% ahead), AMD Ryzen 5 7640HS (0.3% ahead), Intel Core i5-13600H (0.3% behind), and AMD Ryzen 7 7736U (0.3% ahead). The Ultra 9 285 is close to the AMD EPYC 8224P (0.1% behind), AMD EPYC 4545P (0.2% ahead), AMD Ryzen 7 PRO 9755X3D (0.3% behind), and AMD Ryzen 7 PRO 9755 (0.3% behind).

Q: Do both processors support the same memory and PCIe?

A: Yes. Both support DDR5 memory, dual-channel memory bus, and have the same memory bandwidth of 102.4 GB/s. Both also use Gen 5 PCIe with 20 lanes (CPU only).

Where Each One Wins

The Intel Core Ultra 9 285 wins in every measured category, so the practical question is not which benchmarks it wins, but which workloads benefit most from its advantages. The largest gaps appear in integer math (63.9%), data compression (61.1%), data encryption (61%), and random string sorting (60.9%). These are compute-heavy tasks that scale with core count and cache size, making the Ultra 9 285 the clear choice for content creation, database work, and scientific computing.

The Ultra 5 225T’s relative strength lies in single-thread performance. Its PassMark single-thread score of 4,348 is only 10.9% behind the Ultra 9 285, and its Cinebench R23 single-core score of 3,101 is 55.1% behind, which sounds large but is consistent with the core count difference. For lightly threaded applications like older games or simple office tasks, the Ultra 5 225T delivers a usable experience, but it cannot match the Ultra 9 285 in any scenario where more than a few cores are active.

In physics simulations, the Ultra 9 285 scores 3,598 versus 2,053 for the Ultra 5 225T, a 42.9% gap. This suggests that even in workloads that are not purely integer or floating point bound, the extra cores of the Ultra 9 285 provide a substantial advantage. The Ultra 5 225T is best suited for basic desktop use, while the Ultra 9 285 is for demanding professional workloads.

Specification Differences

The two processors differ primarily in core count, cache size, integrated graphics, and ECC support. The Ultra 5 225T has 10 cores and 10 threads, while the Ultra 9 285 has 24 cores and 24 threads. Both have a base clock of 2.50 GHz, but the Ultra 9 285 boosts to 5.60 GHz versus 4.90 GHz for the Ultra 5 225T.

Cache configuration differs significantly. The L1 cache is identical at 192 KB per core, and L2 is also the same at 3 MB per core. However, the L3 cache is 20 MB shared on the Ultra 5 225T versus 36 MB shared on the Ultra 9 285. This 16 MB difference in L3 cache likely contributes to the Ultra 9 285’s advantage in data-heavy workloads.

The integrated graphics differ: the Ultra 5 225T uses Arc Xe-LPG Graphics 16EU, while the Ultra 9 285 uses Arc Xe-LPG Graphics 64EU. The Ultra 9 285 also supports ECC memory, which the Ultra 5 225T does not. Both processors have the same TDP of 65 watts, the same socket (Intel Socket 1851), and the same memory bandwidth of 102.4 GB/s. The Ultra 9 285 has a launch MSRP of $579 and a part number of SRQD4, while the Ultra 5 225T has no recorded launch MSRP or part number.

Architecture Differences

Both processors are built on Arrow Lake architecture with the codename Arrow Lake-S, using a 3 nm process node from TSMC. They share the same transistor count of 17,800 million and die size of 243 mm². The generation field lists the Ultra 5 225T as "Ultra 5 (Arrow Lake)" and the Ultra 9 285 as "Ultra 9 (Arrow Lake)", confirming they are from the same family.

The architectural difference is purely in the core configuration and cache hierarchy. The Ultra 9 285 doubles the core count from 10 to 24, which directly explains its performance advantage in multi-threaded tests. The larger 36 MB L3 cache versus 20 MB also helps with data locality and reduces memory latency in large working sets.

Neither processor has an unlocked multiplier, so overclocking is not officially supported. Both are active production parts released on the same date, 2024-12-31. The integrated graphics difference (16EU vs 64EU) means the Ultra 9 285 has four times the execution units, which could matter for systems without a discrete GPU, though neither is designed primarily for gaming graphics.

The ECC memory support on the Ultra 9 285 is a notable architectural feature, as it enables error-correcting memory for workstation or server-like reliability. The Ultra 5 225T lacks this, making the Ultra 9 285 more suitable for data integrity-sensitive tasks.

The Verdict

The benchmark data is decisive: the Intel Core Ultra 9 285 is the superior processor in every recorded test. Its 24 cores, 5.60 GHz boost clock, and 36 MB L3 cache deliver a 55.1% advantage in Cinebench multi-core tests and up to 63.9% in PassMark integer math. The average benchmark score of 75,488 places it in the 95th percentile, while the Ultra 5 225T sits at 30,468 in the 82nd percentile.

For users who need maximum multi-threaded throughput, the Ultra 9 285 is the only choice between these two. The data shows it is roughly double the performance of the Ultra 5 225T in most heavy workloads, and its ECC memory support adds reliability for professional use. The launch MSRP of $579 reflects its flagship status.

The Ultra 5 225T, with its 10 cores and 4.90 GHz boost, is a capable desktop processor for basic tasks. Its single-thread score of 4,348 is only 10.9% behind the Ultra 9 285, meaning it handles everyday applications without major compromises. However, its 20 MB L3 cache and 16EU integrated graphics are significantly more limited.

The verdict from the data is clear: the Ultra 9 285 wins all 17 benchmarks and should be selected for any workload that can utilize more than a few cores. The Ultra 5 225T is a lower-tier option that loses every head-to-head comparison but remains functional for light use. There is no scenario in the recorded data where the Ultra 5 225T outperforms the Ultra 9 285.