Intel Core 5 221E vs Intel Core Ultra 9 285 Comparison

Head-to-Head Benchmarks

The benchmark data presents a completely one-sided contest. The Intel Core Ultra 9 285 wins all 17 recorded head-to-head tests, with the Intel Core 5 221E taking zero wins. The magnitude of the victory varies significantly by workload, ranging from a modest single-threaded edge to a dominant performance in integer-heavy operations.

The closest contest appears in the PassMark single-thread tests, where the Core Ultra 9 285 scores 4881 against the Core 5 221E's 4147, a 15 percent advantage. This relatively narrow gap in single-core performance suggests that for lightly threaded applications, the architectural differences matter less than the raw clock speed and IPC improvements.

The gap widens considerably in multi-threaded workloads. In Cinebench R23 multi-core, the Core Ultra 9 285 scores 48945 versus 25933 for the Core 5 221E, a 47 percent difference. The same 47 percent delta appears consistently across Cinebench R15, R20, and R23 multi-core tests, indicating a stable and predictable scaling advantage for the higher-core-count processor.

PassMark's integer math test shows the smallest multi-threaded gap at 28.5 percent: the Core Ultra 9 285 scores 164869 while the Core 5 221E manages 117813. This relatively smaller delta suggests that the Core 5 221E's core design remains competitive for basic arithmetic operations, even with fewer cores.

The largest disparities emerge in specialized workloads. The find prime numbers test shows a 62.3 percent deficit for the Core 5 221E (173 versus 459), while extended instructions show a 59.8 percent gap (18216 versus 45357). Data encryption also reveals a 59.1 percent difference (19205 versus 46949). These tests likely stress different execution units and cache hierarchies, where the Core Ultra 9 285's newer architecture and larger shared cache provide outsized benefits.

Floating-point math shows a 59.5 percent gap (79028 versus 194988), while random string sorting shows a 48.8 percent difference (37686 versus 73651). PassMark's multi-thread aggregate test delivers a 46.1 percent gap (30510 versus 56602), closely matching the Cinebench multi-core deltas. Data compression also shows 46.1 percent (324285 versus 602121), reinforcing the pattern of consistent multi-threaded superiority.

The physics test shows a 38 percent gap (2230 versus 3598), which is smaller than the multi-threaded averages but still substantial. The overall average benchmark score tells the same story: the Core Ultra 9 285 averages 75488 across all tests, while the Core 5 221E averages 40144, a difference that places the former in the 95th percentile of all CPUs and the latter in the 87th percentile.

Architecture Differences

The two processors represent fundamentally different design philosophies from Intel. The Core 5 221E uses the Bartlett Lake codename and is built on Intel's 10 nm process node with a die size of 257 mm². The Core Ultra 9 285 uses the Arrow Lake-S codename with the Arrow Lake architecture, built by TSMC on a 3 nm process node with a die size of 243 mm². The smaller die on a much smaller process node allows for 17,800 million transistors in the Core Ultra 9 285, while the transistor count for the Core 5 221E is not recorded.

Core configuration differs dramatically. The Core 5 221E offers 14 cores and 20 threads, indicating a hybrid arrangement with performance and efficiency cores. The Core Ultra 9 285 provides 24 cores and 24 threads, suggesting all cores are performance-class without hyperthreading. This thread count difference explains why the Core Ultra 9 285 does not double the Core 5 221E's multi-threaded scores despite having 10 more cores: it trades thread duplication for additional physical cores.

Cache hierarchies also diverge. The Core 5 221E provides 80 KB of L1 per core, 2 MB of L2 per core, and 24 MB of shared L3. The Core Ultra 9 285 doubles L1 to 192 KB per core, increases L2 to 3 MB per core, and expands shared L3 to 36 MB. These larger caches likely contribute to the Core Ultra 9 285's superior performance in data compression, encryption, and string sorting, where working sets can exceed the smaller L3 capacity.

Memory support differs as well. The Core 5 221E supports both DDR4 and DDR5, while the Core Ultra 9 285 supports only DDR5. Both use dual-channel memory buses, but the Core Ultra 9 285 achieves 102.4 GB/s bandwidth versus 89.6 GB/s for the Core 5 221E. Both support ECC memory, which is notable for workstation-class reliability.

PCIe connectivity favors the Core Ultra 9 285, with 20 Gen 5 lanes from the CPU versus 16 Gen 5 lanes for the Core 5 221E. Integrated graphics also differ: the Core 5 221E includes UHD Graphics 730, while the Core Ultra 9 285 features Arc Xe-LPG Graphics with 64 execution units.

The socket platforms are incompatible. The Core 5 221E uses Intel Socket 1700, while the Core Ultra 9 285 requires Intel Socket 1851. This means system upgrades between these two processors would require a new motherboard, not just a CPU swap. The Core 5 221E launched on January 12, 2025, while the Core Ultra 9 285 launched on December 31, 2024.

Clock speeds show a nuanced picture. The Core 5 221E has a base clock of 2.70 GHz and a boost clock of 5.20 GHz. The Core Ultra 9 285 has a lower base clock of 2.50 GHz but a higher boost clock of 5.60 GHz. Neither processor has an unlocked multiplier, so overclocking headroom is limited for both.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core Ultra 9 285 has 24 cores and 24 threads. The Intel Core 5 221E has 14 cores and 20 threads. The Core Ultra 9 285 has 10 more physical cores but 4 fewer threads, indicating it does not use simultaneous multithreading.

Q: How large is the performance gap in multi-core workloads?

A: In Cinebench R23 multi-core, the Core Ultra 9 285 scores 48945 versus 25933 for the Core 5 221E, a 47 percent difference. Similar 47 percent gaps appear across Cinebench R15 and R20 multi-core tests, while PassMark multi-thread shows a 46.1 percent gap (56602 versus 30510).

Q: Is the single-threaded performance difference smaller?

A: Yes. In PassMark single-thread tests, the Core Ultra 9 285 scores 4881 versus 4147 for the Core 5 221E, a 15 percent difference. Cinebench R23 single-core shows a 47 percent gap (6909 versus 3661), so the PassMark result is notably closer than the Cinebench results.

Q: What are the memory bandwidth capabilities of each processor?

A: The Core Ultra 9 285 supports DDR5 with 102.4 GB/s memory bandwidth. The Core 5 221E supports both DDR4 and DDR5 with 89.6 GB/s memory bandwidth. Both use dual-channel memory buses and support ECC memory.

Q: Do these processors use the same motherboard socket?

A: No. The Core 5 221E uses Intel Socket 1700, while the Core Ultra 9 285 uses Intel Socket 1851. They are not interchangeable between the same motherboards.

Q: What process nodes are used for each chip?

A: The Core Ultra 9 285 is built on a 3 nm process node by TSMC, with 17,800 million transistors on a 243 mm² die. The Core 5 221E uses Intel's 10 nm process node with a 257 mm² die size; its transistor count is not recorded in the database.

The Verdict

The recorded data leaves no ambiguity about which processor delivers higher performance. The Core Ultra 9 285 wins every benchmark in the comparison, with an average benchmark score of 75488 compared to 40144 for the Core 5 221E. The Core Ultra 9 285 sits in the 95th percentile of all CPUs, while the Core 5 221E sits in the 87th percentile.

The Core Ultra 9 285's nearest rivals in the database include AMD EPYC 8224P (75582, 0.1 percent higher), AMD EPYC 4545P (75373, 0.2 percent lower), AMD Ryzen 7 PRO 9755X3D (75716, 0.3 percent higher), and AMD Ryzen 7 PRO 9755 (75738, 0.3 percent higher). These delta values indicate the Core Ultra 9 285 performs essentially on par with these server and workstation-class chips, despite being a desktop processor.

The Core 5 221E's nearest rivals are AMD Ryzen 7 7700 (40081, 0.2 percent lower), AMD Ryzen AI 9 365 (40048, 0.2 percent lower), AMD Ryzen 9 270 (40246, 0.3 percent higher), and Intel Core i9-13905H (40313, 0.4 percent higher). This places the Core 5 221E in the same performance class as mid-range desktop and mobile processors, a distinctly different tier from the Core Ultra 9 285.

The benchmark results indicate that for users who need maximum multi-threaded throughput, the Core Ultra 9 285 is the clear choice from this data. Its 24 physical cores, larger caches, and higher memory bandwidth deliver consistent 46 to 62 percent advantages across most workloads. The Core 5 221E remains competitive only in single-threaded PassMark tests, where its higher base clock helps narrow the gap to 15 percent.

Neither processor offers an unlocked multiplier, so performance tuning is limited to whatever boost behavior Intel has configured. Both run at 65 W TDP, which is surprisingly modest given the Core Ultra 9 285's 24 cores and 5.60 GHz boost clock. The data suggests the 3 nm TSMC process enables high core counts within a desktop-friendly power envelope.

Specification Differences

The two processors differ in nearly every recorded specification category. Core count differs at 14 versus 24, and thread count differs at 20 versus 24. Base clocks differ at 2.70 GHz versus 2.50 GHz, while boost clocks differ at 5.20 GHz versus 5.60 GHz.

Socket compatibility differs completely: Intel Socket 1700 for the Core 5 221E, Intel Socket 1851 for the Core Ultra 9 285. The process node differs at 10 nm versus 3 nm, and the foundry differs at Intel versus TSMC. The Core Ultra 9 285 has a smaller die (243 mm² versus 257 mm²) despite holding 17,800 million transistors, while the Core 5 221E's transistor count is not recorded.

Cache specifications differ across all levels. L1 cache is 80 KB per core versus 192 KB per core. L2 cache is 2 MB per core versus 3 MB per core. Shared L3 cache is 24 MB versus 36 MB. Memory support differs: DDR4 and DDR5 versus DDR5 only. Memory bandwidth differs at 89.6 GB/s versus 102.4 GB/s, though both use dual-channel buses.

PCIe lane counts differ at 16 versus 20 Gen 5 lanes from the CPU. Integrated graphics differ at UHD Graphics 730 versus Arc Xe-LPG Graphics with 64 execution units. Release dates differ at January 12, 2025 versus December 31, 2024. The Core Ultra 9 285 belongs to the Core Ultra Series 2, while the Core 5 221E has no recorded series designation.

Both processors share several attributes: Intel as manufacturer, Desktop market segment, Active production status, ECC memory support, 65 W TDP, and locked multipliers. Neither has a recorded v-cache. The Core Ultra 9 285 has a launch MSRP of $579, while the Core 5 221E has a launch MSRP of $232.

Where Each One Wins

The Core Ultra 9 285 wins in every measured category, so the use-case split depends on the degree of performance required rather than a specific workload where the Core 5 221E excels. The database records zero wins for the Core 5 221E across all 17 head-to-head benchmarks.

For workloads that stress multi-threaded throughput, such as video rendering, 3D modeling, or scientific computing, the Core Ultra 9 285 provides a 46 to 47 percent advantage in Cinebench R15, R20, and R23 multi-core tests. Its PassMark multi-thread score of 56602 versus 30510 confirms this pattern. The 24 physical cores and 36 MB of shared L3 cache give it a substantial edge in parallel execution.

For data-heavy workloads, the Core Ultra 9 285 shows even larger advantages. Data compression shows a 46.1 percent gap (602121 versus 324285), while data encryption shows 59.1 percent (46949 versus 19205). Random string sorting shows 48.8 percent (73651 versus 37686). These results likely benefit from the larger L2 and L3 caches, which reduce memory access latency for frequently accessed data.

For compute-intensive single-threaded tasks, the Core Ultra 9 285 still wins, but the margin narrows. PassMark single-thread shows only a 15 percent gap (4881 versus 4147). This suggests that for lightly threaded applications like older games or simple office tasks, the Core 5 221E's higher base clock of 2.70 GHz partially compensates for its architectural disadvantages.

The Core 5 221E does offer one practical advantage in the recorded data: memory flexibility. It supports both DDR4 and DDR5, which allows system builders to use more affordable DDR4 modules or existing DDR4 memory from previous builds. The Core Ultra 9 285 requires DDR5 exclusively, which may influence platform cost decisions despite the database not recording memory pricing.

The 65 W TDP for both processors means the Core Ultra 9 285 delivers roughly 88 percent higher average benchmark scores (75488 versus 40144) within the same power envelope. This efficiency differential likely stems from the 3 nm TSMC process node versus Intel's 10 nm node, a manufacturing advantage that the data clearly supports.

For users who require the absolute highest multi-threaded performance within a 65 W desktop processor, the Core Ultra 9 285 is the only choice between these two based on the recorded benchmarks. The Core 5 221E serves as a lower-performance alternative with DDR4 compatibility and a lower launch MSRP, though the database does not record pricing comparisons beyond those MSRP figures.