Intel Core 3 305 vs Intel Core Ultra 9 386H Comparison

The Verdict

The benchmark data presents a decisive hierarchy between these two Intel mobile processors. The Intel Core Ultra 9 386H wins all 17 recorded head-to-head benchmark comparisons, with an average benchmark score of 43210 compared to the Intel Core 3 305's 18302. The Core Ultra 9 386H sits at the 88th percentile of all CPUs in the database, while the Core 3 305 ranks at the 72nd percentile. Buyers seeking maximum performance in a mobile platform should select the Core Ultra 9 386H without hesitation. The Core 3 305 serves a different role entirely, as a lower-power, lower-core-count option with a launch MSRP of $309, suited for systems where the 15 W TDP and smaller footprint take priority over raw throughput.

The Core 3 305's nearest rivals in the database include the Intel Core i3-14100 (0.1% lower average score), the Intel Core 5 330 (0.2% lower), the Intel Core 7 360 (0.4% lower), and the AMD Ryzen 5 2600E (0.4% higher). This clustering indicates the Core 3 305 is positioned in a tightly competitive mid-range segment where small performance differences separate products. The Core Ultra 9 386H, by contrast, competes with the AMD Ryzen AI Max PRO 385 (0.3% lower average score), the AMD Ryzen AI 9 465 (0.5% lower), the Intel Core i9-12900 (0.7% higher), and the Intel Core i9-12900KF (0.9% higher). These rival deltas show the Core Ultra 9 386H performing at the edge of high-end desktop-class territory, despite being a mobile part.

The performance gap between the two processors is substantial. In multi-core workloads, the Core Ultra 9 386H delivers roughly double or more the Core 3 305's output. The single-core gap is narrower but still consistent. The data does not show a single workload category where the Core 3 305 pulls ahead. For users whose workloads are dominated by parallel processing, content creation, data compression, or encryption, the Core Ultra 9 386H is the clear choice. The Core 3 305 remains viable for basic productivity, light browsing, and tasks that do not demand sustained multi-threaded performance, particularly in thermally constrained chassis where its lower 15 W TDP provides an advantage.

Where Each One Wins

The Core Ultra 9 386H wins across every recorded benchmark category. Its largest margins appear in multi-threaded and throughput-oriented tests. In Cinebench R15 multi-core, it scores 3223 against 1322, a 59% lead. Cinebench R20 multi-core shows 12820 versus 5511, a 57% margin. Cinebench R23 multi-core delivers 20547 against 13123, a 36.1% lead. These results confirm the Core Ultra 9 386H's 16 cores and 16 threads provide a decisive advantage in render workloads.

Data-heavy tasks reinforce the same pattern. PassMark data compression shows 352365 versus 146857, a 58.3% lead. Data encryption scores 27150 against 11019, a 59.4% margin. Extended instructions deliver 29138 versus 13543, a 53.5% lead. Integer math shows 87284 versus 32295, a 63% margin. Floating-point math scores 108527 against 42284, a 61% lead. Prime number finding, a heavily parallel workload, shows the largest relative gap at 66.3% (341 versus 115).

The Core 3 305 does not win any benchmark. Its closest relative performance appears in single-threaded tests. PassMark single-thread scores 3977 versus 4218, a 5.7% deficit. Cinebench R23 single-core shows 1852 versus 2071.5, a 10.6% gap. These smaller single-thread deltas indicate that for lightly threaded applications, such as typical office tasks or web browsing, the Core 3 305's performance deficit is modest. The Core Ultra 9 386H still wins, but the margin narrows considerably.

Power consumption and platform requirements represent the only meaningful differentiator. The Core 3 305 operates at a 15 W TDP, while the Core Ultra 9 386H uses a 25 W TDP. Both processors use the 3 nm process node from Intel. The Core 3 305 uses a single-channel memory bus with 59.7 GB/s bandwidth, while the Core Ultra 9 386H uses dual-channel memory with 115.2 GB/s, roughly double the bandwidth. These platform-level differences influence system design choices but do not appear in the benchmark scores.

Architecture Differences

The two processors share a common 3 nm process node and Intel foundry, but diverge in almost every other architectural dimension. The Core 3 305, codenamed Wildcat Lake, belongs to the Core 3 generation and packs 6 cores with 6 threads. The Core Ultra 9 386H, codenamed Panther Lake, belongs to the Core Ultra Series 3 and provides 16 cores with 16 threads. Neither processor supports simultaneous multithreading, so thread counts equal core counts.

Clock speeds differ notably. The Core 3 305 has a base clock of 1.50 GHz and a boost clock of 4.30 GHz. The Core Ultra 9 386H operates at a 2.10 GHz base and 4.90 GHz boost. The higher boost clock on the Core Ultra 9 386H contributes to its single-thread advantage, while the additional cores drive the multi-threaded margins.

Cache hierarchies show substantial differences. The Core 3 305 has 192 KB of L1 cache, 2.5 MB of L2 cache, and 6 MB of shared L3 cache. The Core Ultra 9 386H has 192 KB of L1 cache per core, 2.5 MB of L2 cache per core, and 18 MB of shared L3 cache. The per-core L1 and L2 allocations on the Core Ultra 9 386H are notable, but the total L3 capacity is three times larger. For cache-sensitive workloads, the Core Ultra 9 386H's larger shared pool provides a clear structural advantage.

Memory interfaces differ as well. The Core 3 305 supports DDR5 and LPDDR5X memory over a single-channel bus, delivering 59.7 GB/s of bandwidth. The Core Ultra 9 386H supports the same memory types over a dual-channel bus, delivering 115.2 GB/s. The doubled memory bandwidth on the Core Ultra 9 386H aligns with its larger core count and helps feed data-intensive workloads.

PCIe connectivity is also asymmetric. The Core 3 305 provides Gen 4 with 6 CPU-attached lanes. The Core Ultra 9 386H provides Gen 5 with 12 CPU-attached lanes. This gives the Core Ultra 9 386H both more lanes and a newer generation, enabling faster attachment of NVMe storage and other peripherals.

Integrated graphics differ as well. The Core 3 305 includes Intel Xe3 Graphics with 1 Xe unit. The Core Ultra 9 386H includes Intel Xe3 Graphics without a stated execution unit count in the database, suggesting a larger graphics configuration. Both processors target the mobile market segment and are currently in active production. The Core 3 305 uses the Intel BGA 1516 socket, while the Core Ultra 9 386H uses the Intel BGA 2540 socket, meaning they are not socket-compatible.

Neither processor has an unlocked multiplier, so overclocking is not supported on either part. The Core Ultra 9 386H was released earlier, on 2026-01-04, while the Core 3 305 arrived on 2026-04-15. The Core 3 305 has a launch MSRP of $309; no launch MSRP is recorded for the Core Ultra 9 386H.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core Ultra 9 386H has 16 cores and 16 threads. The Intel Core 3 305 has 6 cores and 6 threads. Neither processor supports simultaneous multithreading, so thread counts match core counts.

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

A: The Core Ultra 9 386H leads by 36.1% in Cinebench R23 multi-core (20547 versus 13123), by 57% in Cinebench R20 multi-core (12820 versus 5511), and by 59% in Cinebench R15 multi-core (3223 versus 1322). PassMark multithread shows a 56.4% lead (35399 versus 15439).

Q: Is the single-threaded performance difference smaller?

A: Yes. PassMark single-thread shows a 5.7% difference (4218 versus 3977). Cinebench R23 single-core shows a 10.6% gap (2071.5 versus 1852). Cinebench R20 single-core shows a 57% difference (1809 versus 777), which is anomalous relative to the other single-thread tests.

Q: What are the power consumption differences?

A: The Core 3 305 has a 15 W TDP. The Core Ultra 9 386H has a 25 W TDP. The higher TDP on the Core Ultra 9 386H corresponds to its larger core count and higher clock speeds.

Q: Do these processors use the same socket?

A: No. The Core 3 305 uses the Intel BGA 1516 socket. The Core Ultra 9 386H uses the Intel BGA 2540 socket. They are not interchangeable in a given motherboard.

Q: How does memory bandwidth compare?

A: The Core 3 305 uses a single-channel memory bus with 59.7 GB/s bandwidth. The Core Ultra 9 386H uses a dual-channel memory bus with 115.2 GB/s bandwidth, approximately double.

Head-to-Head Benchmarks

The recorded head-to-head data contains 17 comparisons, all won by the Intel Core Ultra 9 386H. The largest margin occurs in PassMark find prime numbers, where the Core Ultra 9 386H scores 341 against 115, a 66.3% lead. Prime number finding is highly parallel, so the 10-core difference directly translates into throughput.

PassMark integer math shows the second-largest gap at 63% (87284 versus 32295). This workload exercises arithmetic operations across all cores, and the Core Ultra 9 386H's 16 cores provide roughly 2.7 times the integer throughput. PassMark floating-point math follows at 61% (108527 versus 42284). The floating-point results align with the Cinebench multi-core outcomes, confirming that both render and math workloads scale strongly with core count.

Data encryption shows a 59.4% gap (27150 versus 11019). Encryption algorithms often benefit from both core count and memory bandwidth; the Core Ultra 9 386H's dual-channel interface likely contributes here. PassMark physics scores 3028 versus 1233, a 59.3% gap. Physics simulation is another parallel workload where the additional cores dominate. Cinebench R15 multi-core shows a 59% gap (3223 versus 1322), consistent with the physics result.

Data compression delivers a 58.3% gap (352365 versus 146857). Compression workloads are sensitive to cache capacity and memory bandwidth, both of which favor the Core Ultra 9 386H. PassMark random string sorting shows a 58.2% gap (42135 versus 17623), another memory-intensive test. Cinebench R20 multi-core shows a 57% gap (12820 versus 5511), and Cinebench R20 single-core also shows a 57% gap (1809 versus 777). The R20 single-core result is exceptional because it shows a much larger single-thread gap than other single-thread tests; the boost clock difference (4.90 GHz versus 4.30 GHz) only explains part of it, and the larger cache hierarchy likely contributes.

PassMark multithread shows a 56.4% gap (35399 versus 15439). PassMark extended instructions shows a 53.5% gap (29138 versus 13543). Cinebench R23 multi-core shows a 36.1% gap (20547 versus 13123), which is the smallest multi-core margin in the dataset. This suggests that Cinebench R23's workload does not scale as perfectly with core count as other tests, possibly due to memory bandwidth saturation or per-core efficiency differences.

The smallest margins appear in single-threaded tests. PassMark single-thread and PassMark singlethread both record 3977 for the Core 3 305 and 4218 for the Core Ultra 9 386H, a 5.7% gap. Cinebench R23 single-core shows 1852 versus 2071.5, a 10.6% gap. Cinebench R15 single-core shows 186 versus 303.5, a 38.7% gap. The R15 single-core result is inconsistent with the other single-thread tests, likely reflecting a different workload mix or scaling behavior at lower core counts.

The overall average benchmark scores place the Core Ultra 9 386H at 43210 and the Core 3 305 at 18302, a 136% difference in aggregate. The percentile rankings (88th versus 72nd) reflect the broader competitive positioning. The Core Ultra 9 386H's nearest rivals include the Intel Core i9-12900 and i9-12900KF, indicating it performs at the level of previous-generation desktop high-end processors. The Core 3 305's nearest rivals, including the Core i3-14100 and Core 5 330, place it in the mid-range mobile segment.

The data shows no scenario where the Core 3 305 is competitive with the Core Ultra 9 386H. Every recorded benchmark, from single-threaded to heavily parallel, favors the Core Ultra 9 386H. The Core 3 305's advantages are limited to platform-level characteristics: lower TDP, single-channel memory simplicity, and a smaller physical footprint. For performance-oriented mobile systems, the Core Ultra 9 386H is categorically superior.