Intel Core i5-1230U vs Intel Core Ultra 3 105UL Comparison

Head-to-Head Benchmarks

The benchmark data presents a fascinating split between these two Intel processors. The Intel Core Ultra 3 105UL wins 6 of the 17 head-to-head tests, while the Intel Core i5-1230U takes 11 victories. This is not a simple generational sweep; it is a case of each chip dominating entirely different workloads.

The most dramatic margin belongs to the Core Ultra 3 105UL in Cinebench R23 multi-core. It scores 8742 against the i5-1230U's 4402, a staggering 98.6% advantage. This is nearly double the multi-threaded rendering performance. The gap in Cinebench R15 multi-core is also decisive, with the Ultra 3 leading 881 to 514, a 71.4% difference. These results suggest that for sustained multi-core rendering tasks, the Ultra 3 is in a different performance class entirely.

However, the i5-1230U strikes back in other Cinebench versions. In R20 multi-core, the i5-1230U actually wins, scoring 3903 against the Ultra 3's 3671, a 5.9% edge. This inconsistency between Cinebench versions is curious. It may reflect different workload sensitivities or thermal behavior during the test runs. The R15 single-core test also goes to the i5-1230U by a wide margin: 186.8 versus 124, a 33.6% deficit for the Ultra 3. Similarly, R20 single-core favors the i5 at 550 versus 518 (5.8% ahead), and R23 single-core shows the i5 ahead at 1310 versus 1234 (5.8% ahead).

PassMark tests reveal a different pattern. The Ultra 3 105UL wins floating point math decisively, scoring 30750 versus 25340, a 21.3% advantage. It also takes integer math at 41171 versus 38401, a 7.2% lead. The PassMark single-thread score goes to the Ultra 3 at 3382 versus 2712, a 24.7% margin, which is notable because the Cinebench single-core tests favored the i5. This suggests the two chips have very different instruction-level efficiencies depending on the benchmark's specific operations.

The i5-1230U dominates the remaining PassMark workloads. Data compression goes to the i5 at 114042 versus 93961 (17.6% ahead). Data encryption favors the i5 at 7176 versus 6354 (11.5% ahead). Extended instructions go to the i5 at 6282 versus 5634 (10.3% ahead). Prime number finding shows the i5 at 55 versus 44 (20% ahead). The multithread PassMark score goes to the i5 at 10881 versus 10285 (5.5% ahead). Physics simulation favors the i5 at 828 versus 718 (13.3% ahead). Random string sorting goes to the i5 at 12760 versus 11179 (12.4% ahead).

The aggregate scores confirm the near-parity in overall standing. The Ultra 3 has an average benchmark score of 13061, placing it in the 68th percentile of all CPUs. Its nearest rivals include the Intel Core i5-9400F at 13041 (0.2% behind) and the Intel Core i7-10750H at 13024 (0.3% ahead). The i5-1230U averages 12559, sitting in the 67th percentile. Its closest competitor is the AMD EPYC 9174F at 12536 (0.2% ahead), followed by the Intel Core i3-1215U at 12604 (0.4% behind). The overall average score difference between the two chips is only about 4%, which is surprisingly small given the individual test disparities.

The Verdict

The data paints a clear picture for different use cases. The Intel Core Ultra 3 105UL is the choice for multi-threaded rendering and mathematical computation. The Cinebench R23 multi-core result of 8742 versus 4402 is the single largest margin in the entire comparison, and the 21.3% lead in floating point math reinforces this strength. Users running 3D rendering, scientific simulations, or financial modeling that relies on floating point operations would see substantial benefits from the Ultra 3.

The Intel Core i5-1230U, despite its lower average benchmark score, wins more individual tests. Its strengths lie in data compression, encryption, sorting, and physics workloads. The 17.6% lead in data compression and 11.5% lead in encryption suggest it handles memory-bound and I/O-heavy tasks more effectively. The 20% advantage in prime number finding points to better integer division and modular arithmetic performance.

For general productivity, the i5-1230U's win in PassMark multithread (10881 versus 10285) and its single-core Cinebench victories suggest it may feel more responsive in everyday applications. The 24.7% single-thread PassMark win for the Ultra 3 complicates this picture, but the Cinebench single-core results consistently favor the i5 across three different versions.

The percentile rankings are nearly identical (68th versus 67th), and the average scores differ by only about 4%. This means neither chip is a clear overall winner. The choice depends entirely on workload. The data indicates the Ultra 3 for compute-heavy multi-threaded tasks, and the i5-1230U for mixed workloads with emphasis on data manipulation and single-thread responsiveness.

Architecture Differences

The two processors come from different architectural generations and target different market segments. The Intel Core Ultra 3 105UL uses the Meteor Lake architecture, specifically the Meteor Lake-PS variant, built on a 7 nm process node at Intel's foundry. It is a desktop processor using the Intel Socket 1851. The Core i5-1230U uses Alder Lake, specifically Alder Lake-U, built on a 10 nm process node, also at Intel. It is a mobile processor using the Intel BGA 1781 socket.

The core counts differ significantly. The Ultra 3 has 8 cores and 10 threads, while the i5-1230U has 10 cores and 12 threads. Despite having fewer cores, the Ultra 3 achieves much higher multi-core scores in Cinebench R23 and R15. This suggests the Meteor Lake cores are substantially more efficient per core, or the thermal envelope allows better sustained performance. The i5-1230U's extra cores and threads do not translate into consistent multi-core wins.

Cache hierarchies also differ. The Ultra 3 has 112 KB of L1 cache per core, 2 MB of L2 cache per core, and 10 MB of shared L3 cache. The i5-1230U has 80 KB of L1 per core, 1.25 MB of L2 per core, and 12 MB of shared L3 cache. The larger L3 on the i5 may contribute to its wins in data compression and encryption, which often benefit from larger shared caches. The Ultra 3's larger per-core L1 and L2 caches may explain its floating point and integer math advantages.

The integrated graphics differ as well. The Ultra 3 features Arc Xe-LPG with 48 execution units, while the i5-1230U has Iris Xe with 80 execution units. The i5's graphics have more execution units, which could matter for light gaming or media encoding, though no benchmark data in this comparison covers graphics performance.

The process node difference is notable: 7 nm for Meteor Lake versus 10 nm for Alder Lake. This likely contributes to the Ultra 3's higher performance per core and its ability to achieve higher multi-core scores despite fewer cores.

Specification Differences

The two processors differ in several key specifications. The base clock speeds are dramatically different: the Ultra 3 runs at 1.50 GHz, while the i5-1230U has a base clock of 1000.00 MHz. The boost clocks are closer, with the Ultra 3 reaching 4.20 GHz and the i5-1230U boosting to 4.40 GHz. The i5's higher boost clock likely explains its consistent wins in single-core Cinebench tests.

Thermal design power differs substantially. The Ultra 3 has a TDP of 15 watts, while the i5-1230U has a TDP of 9 watts. This makes the i5 more power-efficient on paper, though the Ultra 3's higher TDP may allow it to sustain higher performance under load.

Memory support varies. The Ultra 3 supports DDR5, with the exact configuration depending on the motherboard, and has a dual-channel memory bus with a bandwidth of 89.6 GB/s. The i5-1230U supports both DDR4 and DDR5, also with a dual-channel bus, but no memory bandwidth figure is recorded in the database. Neither processor supports ECC memory.

PCIe capabilities differ. The Ultra 3 supports PCIe Gen 4 with 8 lanes (CPU only), while the i5-1230U supports PCIe Gen 4 without a specified lane count. The Ultra 3's explicit 8-lane specification suggests more expansion capability for desktop use.

The release dates are different: the Ultra 3 launched on 2024-04-07, while the i5-1230U launched on 2022-02-22. The Ultra 3 has a launch MSRP of $295. The i5-1230U has no recorded launch MSRP. Neither processor has an unlocked multiplier. The Ultra 3 has a part number of SRN9D, while the i5-1230U has no part number recorded.

FAQ

Q: Which processor has the higher average benchmark score?

A: The Intel Core Ultra 3 105UL averages 13061, while the Intel Core i5-1230U averages 12559. The Ultra 3 sits in the 68th percentile of all CPUs, and the i5-1230U sits in the 67th percentile.

Q: Why does the Core Ultra 3 105UL win Cinebench R23 multi-core by such a large margin?

A: The Ultra 3 scores 8742 in Cinebench R23 multi-core versus 4402 for the i5-1230U, a 98.6% difference. Despite having fewer cores (8 versus 10), the Ultra 3's 7 nm Meteor Lake architecture delivers substantially higher per-core multi-threaded performance in this workload.

Q: Does the Core i5-1230U win any single-core benchmarks?

A: Yes, the i5-1230U wins all three Cinebench single-core tests: R15 (186.8 versus 124, a 33.6% edge), R20 (550 versus 518, a 5.8% edge), and R23 (1310 versus 1234, a 5.8% edge). However, the Ultra 3 wins the PassMark single-thread test at 3382 versus 2712, a 24.7% margin.

Q: Which processor is better for data compression workloads?

A: The Intel Core i5-1230U is better for data compression, scoring 114042 in PassMark data compression versus 93961 for the Ultra 3, a 17.6% advantage. The i5 also wins data encryption at 7176 versus 6354 (11.5% ahead).

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

A: The Intel Core Ultra 3 105UL has 8 cores and 10 threads. The Intel Core i5-1230U has 10 cores and 12 threads. Despite having fewer cores, the Ultra 3 wins Cinebench R23 multi-core by 98.6%.

Q: How do the TDP ratings compare?

A: The Intel Core Ultra 3 105UL has a TDP of 15 watts, while the Intel Core i5-1230U has a TDP of 9 watts. The i5-1230U is rated for lower power consumption, which is consistent with its mobile market segment.

Where Each One Wins

The Intel Core Ultra 3 105UL wins in these specific workloads: Cinebench R15 multi-core (881 versus 514, 71.4% ahead), Cinebench R23 multi-core (8742 versus 4402, 98.6% ahead), PassMark floating point math (30750 versus 25340, 21.3% ahead), PassMark integer math (41171 versus 38401, 7.2% ahead), and PassMark single-thread (3382 versus 2712, 24.7% ahead). These wins cluster around mathematical computation and multi-threaded rendering. The data indicates the Ultra 3 is the better choice for 3D rendering, scientific computing, and any workload that heavily exercises floating point or integer arithmetic.

The Intel Core i5-1230U wins in: Cinebench R15 single-core (186.8 versus 124, 33.6% ahead), Cinebench R20 multi-core (3903 versus 3671, 5.9% ahead), Cinebench R20 single-core (550 versus 518, 5.8% ahead), Cinebench R23 single-core (1310 versus 1234, 5.8% ahead), PassMark data compression (114042 versus 93961, 17.6% ahead), PassMark data encryption (7176 versus 6354, 11.5% ahead), PassMark extended instructions (6282 versus 5634, 10.3% ahead), PassMark find prime numbers (55 versus 44, 20% ahead), PassMark multithread (10881 versus 10285, 5.5% ahead), PassMark physics (828 versus 718, 13.3% ahead), and PassMark random string sorting (12760 versus 11179, 12.4% ahead). The i5-1230U dominates data manipulation, encryption, sorting, and physics workloads, and it holds a consistent single-core advantage in Cinebench tests.

The use-case split is clear. The Ultra 3 is the processor for compute-heavy desktop workloads, particularly rendering and mathematical simulation. The i5-1230U is the processor for mobile productivity, data processing, and applications that benefit from efficient handling of memory-intensive operations. The near-identical percentile rankings (68th versus 67th) and close average scores (13061 versus 12559) mean that neither chip is a universal recommendation. The recorded data supports each processor for distinct tasks, and the choice should be guided by the specific workload profile.