Intel Core i3-10305T vs Intel Processor U300 Comparison

Head-to-Head Benchmarks

The benchmark data presents a clear split between these two processors, with the Intel Processor U300 winning three of the four recorded comparisons, but the Intel Core i3-10305T taking the most important multi-threaded victory. In the Cinebench R15 multicore test, the U300 scores 781 against 669 for the i3-10305T, a 16.7% advantage. The single-core gap is far more dramatic: the U300 posts 222 in Cinebench R15 single-core versus just 94 for the i3-10305T, a massive 136.2% lead. That same story repeats in Cinebench R23 single-core, where the U300 scores 1616 compared to 938, a 72.3% margin.

However, the i3-10305T flips the script in Cinebench R23 multicore. There, the i3-10305T scores 6647 against the U300's 4905, a 26.2% deficit for the U300. This single result shows that the i3-10305T's higher thread count (8 threads versus 6) and much higher base clock (3.00 GHz versus 1.20 GHz) give it a decisive edge in sustained all-core workloads, even though the U300's newer architecture wins every single-threaded contest and even the older R15 multicore test.

The overall average benchmark score sits close: the U300 averages 1881, while the i3-10305T averages 1922. Both processors land at the 43rd percentile among all CPUs in the database. The nearest rivals for the U300 include the Intel Xeon E3-1558L v5 at 1882 (0% delta), the Intel Xeon E3-1545M v5 at 1879 (0.1% delta), and the Intel Xeon E3-1270L v4 at 1883 (-0.1% delta). The i3-10305T's nearest rivals include the Intel Xeon E3-1231 v3 at 1925 (-0.2% delta), the Intel Core i7-6700T at 1918 (0.2% delta), and the AMD Ryzen 3 7320U at 1916 (0.3% delta). These close margins indicate that both processors sit in a crowded performance band, with neither offering a significant overall advantage over its direct competitors.

Architecture Differences

The two processors come from entirely different design eras and market segments. The Intel Processor U300 is built on Raptor Lake architecture, specifically the Raptor Lake-U codename, using a 10 nm process node from Intel. It features 5 cores and 6 threads, a configuration that suggests a hybrid layout with performance and efficiency cores, though the database does not specify the exact core mix. Its base clock is 1200.00 MHz, boosting to 4.40 GHz, with a TDP of just 15 watts. The U300 targets the mobile segment with an Intel BGA 1744 socket, making it a soldered, low-power part designed for laptops and compact systems.

The Intel Core i3-10305T belongs to the Comet Lake generation, specifically Comet Lake-R, built on a 14 nm process node. It has 4 cores and 8 threads, with Hyper-Threading enabled, a base clock of 3.00 GHz and a boost clock of 4.00 GHz. Its TDP is 35 watts, more than double the U300's power envelope. The i3-10305T uses the Intel Socket 1200, a desktop platform, and is classified as a desktop processor. It was released in March 2021, while the U300 came out in January 2023, giving the U300 roughly two years of architectural advancement.

Cache configurations differ substantially. The U300 has 80 KB of L1 cache per core and 1.25 MB of L2 cache per core, with 8 MB of shared L3 cache. The i3-10305T has 64 KB of L1 per core and 256 KB of L2 per core, also with 8 MB of shared L3. The U300's larger per-core L2 cache (1.25 MB versus 256 KB) reflects the newer Raptor Lake design and likely contributes to its single-thread performance dominance. Memory support also diverges: the U300 supports both DDR4 and DDR5 memory, while the i3-10305T is limited to DDR4. Both use dual-channel memory buses, but the i3-10305T has a recorded memory bandwidth of 42.7 GB/s, a figure not listed for the U300. PCIe connectivity differs as well: the U300 offers PCIe Gen 4 with 8 CPU lanes, while the i3-10305T provides PCIe Gen 3 with 16 CPU lanes.

Integrated graphics are another point of distinction. The U300 includes UHD Graphics with 48 execution units, while the i3-10305T has UHD Graphics 630. Neither processor supports ECC memory, and both have locked multipliers, meaning overclocking is not an option. The U300's part number is SRMLU, while the i3-10305T's is SRH3M.

Where Each One Wins

The Intel Processor U300 is the clear winner in single-threaded performance and in older multicore benchmarks. Its Cinebench R15 single-core score of 222 versus 94 for the i3-10305T indicates a 136.2% advantage, which translates to snappier everyday responsiveness, faster application launches, and better performance in lightly threaded software. The U300 also wins Cinebench R23 single-core by 72.3%, confirming that its architectural efficiency carries over to modern workloads. In Cinebench R15 multicore, the U300 leads by 16.7%, suggesting that for shorter multi-threaded bursts, the U300's higher boost clock (4.40 GHz versus 4.00 GHz) and newer core design compensate for its lower core count.

The Intel Core i3-10305T wins in sustained multi-threaded workloads, as demonstrated by its 26.2% lead in Cinebench R23 multicore. This benchmark stresses all cores for an extended period, and the i3-10305T's 8 threads (versus 6 for the U300) and higher base clock (3.00 GHz versus 1.20 GHz) allow it to sustain higher throughput. The i3-10305T's 35-watt TDP, while higher than the U300's 15 watts, enables more consistent all-core performance without thermal throttling in a desktop chassis. For tasks like video rendering, 3D modeling, or batch processing that fully utilize all available threads, the i3-10305T is the stronger choice.

The U300, being a mobile processor with a 15-watt TDP, is designed for efficiency and portability. Its wins in single-core tests suggest it excels in web browsing, office productivity, and other latency-sensitive tasks where one or two cores dominate. The i3-10305T's desktop pedigree and higher thread count make it better suited for content creation and multitasking scenarios where parallel processing matters most.

The Verdict

The data points to a clear trade-off between architectural efficiency and raw thread throughput. The Intel Processor U300 wins three of four head-to-head benchmarks and dominates every single-threaded test by margins ranging from 72.3% to 136.2%. Its 10 nm Raptor Lake architecture, larger per-core cache, and support for DDR5 memory make it the more modern and efficient processor. For users who prioritize fast single-threaded performance, low power consumption, and the latest platform features, the U300 is the obvious pick.

The Intel Core i3-10305T, despite its older 14 nm Comet Lake design, wins the most demanding multicore test by 26.2%, scoring 6647 in Cinebench R23 multicore versus 4905 for the U300. Its 8 threads and 3.00 GHz base clock deliver sustained multi-threaded performance that the U300 cannot match. For users running heavily parallel workloads such as video encoding, software compilation, or 3D rendering, the i3-10305T provides better throughput, albeit at more than double the power draw (35 watts versus 15 watts).

The average benchmark scores are nearly identical, with the i3-10305T at 1922 and the U300 at 1881, a difference of about 2%. Both processors sit at the 43rd percentile of all CPUs, meaning they offer comparable overall performance in the database's aggregate metrics. The choice ultimately depends on workload: pick the U300 for single-threaded responsiveness and mobile efficiency, or pick the i3-10305T for sustained multi-threaded rendering and desktop multitasking.

FAQ

Q: Which processor is faster in single-core performance?

A: The Intel Processor U300 is significantly faster. It scores 222 in Cinebench R15 single-core versus 94 for the i3-10305T, a 136.2% lead, and 1616 in Cinebench R23 single-core versus 938, a 72.3% lead.

Q: Which processor wins in multi-core performance?

A: The Intel Core i3-10305T wins the Cinebench R23 multicore test with a score of 6647 versus 4905 for the U300, a 26.2% advantage. However, the U300 wins the Cinebench R15 multicore test with 781 versus 669, a 16.7% lead.

Q: What are the core and thread counts for each processor?

A: The Intel Processor U300 has 5 cores and 6 threads, while the Intel Core i3-10305T has 4 cores and 8 threads.

Q: Do these processors support DDR5 memory?

A: The Intel Processor U300 supports both DDR4 and DDR5 memory. The Intel Core i3-10305T supports only DDR4.

Q: What is the TDP difference between the two?

A: The Intel Processor U300 has a TDP of 15 watts, while the Intel Core i3-10305T has a TDP of 35 watts.

Q: Which processor has a higher boost clock?

A: The Intel Processor U300 has a boost clock of 4.40 GHz, while the Intel Core i3-10305T has a boost clock of 4.00 GHz.

Specification Differences

| Specification | Intel Processor U300 | Intel Core i3-10305T |

|---|---|---|

| Cores | 5 | 4 |

| Threads | 6 | 8 |

| Base Clock | 1200.00 MHz | 3.00 GHz |

| Boost Clock | 4.40 GHz | 4.00 GHz |

| TDP | 15 W | 35 W |

| Socket | Intel BGA 1744 | Intel Socket 1200 |

| Architecture | Raptor Lake | Comet Lake |

| Codename | Raptor Lake-U | Comet Lake-R |

| Generation | Intel Processor (Raptor Lake-U) | Core i3 (Comet Lake) |

| Process Node | 10 nm | 14 nm |

| L1 Cache | 80 KB (per core) | 64 KB (per core) |

| L2 Cache | 1.25 MB (per core) | 256 KB (per core) |

| L3 Cache | 8 MB (shared) | 8 MB (shared) |

| Memory Support | DDR4, DDR5 | DDR4 |

| Memory Bandwidth | Not specified | 42.7 GB/s |

| PCIe | Gen 4, 8 Lanes (CPU only) | Gen 3, 16 Lanes (CPU only) |

| Integrated Graphics | UHD Graphics 48EU | UHD Graphics 630 |

| Market Segment | Mobile | Desktop |

| Release Date | 2023-01-03 | 2021-03-15 |

| Launch MSRP | $193 | $143 |

| Part Number | SRMLU | SRH3M |