Intel Core 3 305 vs Intel Core Ultra 7 155UL Comparison

# Intel Core 3 305 vs Intel Core Ultra 7 155UL

FAQ

Q: What is the core and thread configuration of each processor?

A: The Intel Core 3 305 has 6 cores and 6 threads, while the Intel Core Ultra 7 155UL has 12 cores and 14 threads. The Ultra 7 155UL offers double the core count and more thread capacity.

Q: How do the clock speeds compare between these two chips?

A: The Core 3 305 has a base clock of 1.50 GHz and a boost clock of 4.30 GHz. The Core Ultra 7 155UL starts at 1.70 GHz base and reaches 4.80 GHz boost, giving it higher frequencies in both states.

Q: What process nodes are used for manufacturing?

A: The Core 3 305 is built on a 3 nm process node, while the Core Ultra 7 155UL uses a 7 nm node. Both are manufactured by Intel.

Q: Which processor has more cache memory?

A: The Core Ultra 7 155UL has 112 KB L1 cache per core, 2 MB L2 cache per core, and 12 MB shared L3 cache. The Core 3 305 has 192 KB total L1, 2.5 MB L2, and 6 MB shared L3 cache.

Q: What are the memory bandwidth specifications?

A: The Core 3 305 supports single-channel memory with 59.7 GB/s bandwidth. The Core Ultra 7 155UL supports dual-channel memory with 89.6 GB/s bandwidth, a substantially wider memory path.

Q: What is the market positioning of each product?

A: The Core 3 305 is a mobile processor, while the Core Ultra 7 155UL is positioned as a desktop processor. Both are currently active production parts.

Architecture Differences

The Intel Core 3 305 and Intel Core Ultra 7 155UL represent different architectural generations from Intel. The Core 3 305 uses the Wildcat Lake codename and belongs to the Core 3 (Wildcat Lake) generation. In contrast, the Core Ultra 7 155UL uses the Meteor Lake architecture with the Meteor Lake-PS codename, part of the Core Ultra Series 1.

The manufacturing processes differ significantly. The Core 3 305 is built on a 3 nm process node, which represents a more advanced fabrication technology compared to the 7 nm node used for the Core Ultra 7 155UL. Both chips are produced by Intel's own foundry operations.

Core configuration marks a fundamental architectural divergence. The Core 3 305 features 6 cores and 6 threads, indicating a uniform core layout without hyperthreading. The Core Ultra 7 155UL features 12 cores and 14 threads, suggesting a hybrid architecture with performance and efficiency cores, where two additional threads come from hyperthreading on some cores.

Cache hierarchies differ in organization. The Core 3 305 has 192 KB L1 cache, 2.5 MB L2 cache, and 6 MB shared L3 cache. The Core Ultra 7 155UL specifies 112 KB L1 per core, 2 MB L2 per core, and 12 MB shared L3 cache. The per-core L2 allocation on the Ultra 7 suggests a different cache management strategy suited to its hybrid design.

Memory architecture also separates these processors. The Core 3 305 uses a single-channel memory bus with DDR5 and LPDDR5X support, delivering 59.7 GB/s bandwidth. The Core Ultra 7 155UL uses a dual-channel memory bus with DDR5 support that depends on the motherboard, delivering 89.6 GB/s bandwidth. The dual-channel configuration provides a wider data path for memory-intensive workloads.

PCIe connectivity differs as well. The Core 3 305 provides Gen 4 with 6 lanes from the CPU, while the Core Ultra 7 155UL provides Gen 4 with 8 lanes from the CPU. The Ultra 7 has two additional PCIe lanes available for expansion.

Integrated graphics distinguish the two platforms. The Core 3 305 includes Intel Xe3 Graphics with 1 Xe core. The Core Ultra 7 155UL includes Arc Xe-LPG graphics with 64 execution units, representing a substantially more capable integrated GPU.

Socket requirements differ, with the Core 3 305 using Intel BGA 1516 and the Core Ultra 7 155UL using Intel Socket 1851. This indicates different platform compatibility for each processor.

Head-to-Head Benchmarks

Direct head-to-head benchmark data between the Intel Core 3 305 and Intel Core Ultra 7 155UL is not available in the recorded database. The Core 3 305 has extensive benchmark results, while the Core Ultra 7 155UL currently has no recorded benchmark scores. The head-to-head comparison table is empty, and the win counts for both processors stand at zero.

The Core 3 305's benchmark performance can be characterized through its individual results. In Cinebench R15, the Core 3 305 scores 1322 in multicore and 186 in single-core. Cinebench R20 results show 5511 multicore and 777 single-core. Cinebench R23 multicore reaches 13123, with single-core at 1852.

PassMark results for the Core 3 305 cover several specialized workloads. Data compression scores 146857, data encryption scores 11019, and extended instructions score 13543. Find prime numbers scores 115, floating point math scores 42284, and integer math scores 32295. The multithread score is 15439, physics scores 1233, random string sorting scores 17623, and single-thread performance scores 3977.

The Core 3 305 achieves an average benchmark score of 18302 and sits at the 72nd percentile among all CPUs in the database. Its nearest rivals include the Intel Core i3-14100 with an average score of 18318, showing a negligible 0.1% difference. The Intel Core 5 330 scores 18345, placing it 0.2% ahead of the Core 3 305. The Intel Core 7 360 scores 18374, 0.4% ahead. The AMD Ryzen 5 2600E scores 18230, 0.4% behind the Core 3 305.

Since the Core Ultra 7 155UL has no benchmark data recorded, its average benchmark score is 0, and its percentile ranking is 50. No nearest rivals are listed for comparison. The absence of recorded performance data limits direct comparative analysis between these two processors.

Without head-to-head results, the data cannot confirm which processor delivers superior performance in any workload category. The Core 3 305's benchmark scores indicate a capable performer in its segment, but the Core Ultra 7 155UL's architectural advantages, including higher core count, more threads, faster clock speeds, and dual-channel memory, suggest potential performance advantages that remain unquantified in the database.

Specification Differences

The Intel Core 3 305 and Intel Core Ultra 7 155UL differ across several specification fields.

Core and Thread Count: The Core 3 305 has 6 cores and 6 threads. The Core Ultra 7 155UL has 12 cores and 14 threads.

Clock Speeds: The Core 3 305 operates at 1.50 GHz base and 4.30 GHz boost. The Core Ultra 7 155UL operates at 1.70 GHz base and 4.80 GHz boost.

Process Node: The Core 3 305 uses a 3 nm process. The Core Ultra 7 155UL uses a 7 nm process.

Architecture and Codename: The Core 3 305 has no specific architecture listed and uses the Wildcat Lake codename. The Core Ultra 7 155UL uses the Meteor Lake architecture with the Meteor Lake-PS codename.

Generation: The Core 3 305 is from the Core 3 (Wildcat Lake) generation. The Core Ultra 7 155UL is from the Ultra 7 (Meteor Lake-PS) generation and belongs to the Core Ultra Series 1.

Cache Configuration: The Core 3 305 has 192 KB L1, 2.5 MB L2, and 6 MB shared L3. The Core Ultra 7 155UL has 112 KB L1 per core, 2 MB L2 per core, and 12 MB shared L3.

Memory Support: The Core 3 305 supports DDR5 and LPDDR5X. The Core Ultra 7 155UL supports DDR5 with motherboard-dependent configuration.

Memory Bus: The Core 3 305 uses a single-channel memory bus. The Core Ultra 7 155UL uses a dual-channel memory bus.

Memory Bandwidth: The Core 3 305 delivers 59.7 GB/s. The Core Ultra 7 155UL delivers 89.6 GB/s.

PCIe Configuration: The Core 3 305 provides Gen 4 with 6 CPU lanes. The Core Ultra 7 155UL provides Gen 4 with 8 CPU lanes.

Integrated Graphics: The Core 3 305 includes Intel Xe3 Graphics with 1 Xe core. The Core Ultra 7 155UL includes Arc Xe-LPG with 64 execution units.

Socket: The Core 3 305 uses Intel BGA 1516. The Core Ultra 7 155UL uses Intel Socket 1851.

Market Segment: The Core 3 305 targets mobile. The Core Ultra 7 155UL targets desktop.

Release Date: The Core 3 305 released on April 15, 2026. The Core Ultra 7 155UL released on April 7, 2024.

Launch MSRP: The Core 3 305 has a launch MSRP of $309. The Core Ultra 7 155UL has a launch MSRP of $426.

Part Number: The Core 3 305 uses SAE3L. The Core Ultra 7 155UL uses SRN97.

Multiplier Unlocked: Both processors have locked multipliers.

ECC Memory: Both processors do not support ECC memory.

Production Status: Both processors are listed as active production parts.

Transistors and Die Size: Neither processor has recorded transistor counts or die sizes in the database.

Total L3 and vCache3d: Neither processor has recorded total L3 values or 3D V-Cache specifications.

The Verdict

The recorded data presents a comparison where one processor has extensive performance measurements and the other has none. The Intel Core 3 305 delivers substantial benchmark results across Cinebench and PassMark workloads, achieving a 72nd percentile ranking among all CPUs with an average benchmark score of 18302. Its nearest rival comparisons show performance within 0.4% of several similar processors, indicating consistent mid-pack positioning.

The Intel Core Ultra 7 155UL enters the comparison with architectural advantages on paper. Its 12 cores and 14 threads double the core count of the Core 3 305. Boost clocks reach 4.80 GHz versus 4.30 GHz. Dual-channel memory provides 89.6 GB/s bandwidth compared to 59.7 GB/s single-channel. The integrated Arc Xe-LPG graphics with 64 execution units far exceeds the Xe3 Graphics with 1 Xe core. The 12 MB shared L3 cache doubles the Core 3 305's 6 MB allocation.

However, no benchmark scores exist for the Core Ultra 7 155UL in the database. Its average benchmark score is recorded as 0, and its percentile ranking stands at 50 without supporting measurements. The head-to-head comparison table remains empty, and neither processor has recorded wins against the other.

The process node advantage belongs to the Core 3 305 with its 3 nm manufacturing versus 7 nm for the Ultra 7 155UL. The Core 3 305 also uses the newer Wildcat Lake generation and released in April 2026, compared to the Ultra 7's Meteor Lake generation from April 2024.

Data-driven guidance points to clear segmentation. The Core 3 305 suits anyone requiring a mobile processor with verified performance metrics across multiple benchmark suites. Its benchmark results confirm capability in single-thread and multithread workloads, with specific scores in data compression, encryption, and mathematical operations. The Core Ultra 7 155UL targets desktop users who prioritize core count, memory bandwidth, and integrated graphics capability, though its actual performance remains unmeasured in the database.

Users making a selection between these processors must weigh verified results against unverified specifications. The Core 3 305 provides concrete performance evidence. The Core Ultra 7 155UL offers a stronger theoretical feature set but lacks recorded measurements to confirm real-world behavior. The database cannot validate the Ultra 7's performance claims without benchmark data. Until measurements are recorded, the Core 3 305 stands as the only option with substantiated performance credentials.