Intel Arc G3 vs Intel Core Ultra 5 245HX Comparison

Intel Arc G3 and Intel Core Ultra 5 245HX are two mobile processors from Intel, but they target different segments of the laptop market. The Arc G3 is built on the Panther Lake architecture, while the Core Ultra 5 245HX belongs to the Arrow Lake-HX family. Both chips feature 14 cores and 14 threads, so the core count is identical, but the similarities largely end there. The Core Ultra 5 245HX has a substantial benchmark presence in the database, with 17 recorded scores across Cinebench and Passmark workloads. The Arc G3 has no recorded benchmark scores, which limits direct numerical comparison. The Core Ultra 5 245HX also holds a 90th percentile ranking among all CPUs, while the Arc G3 sits at the 50th percentile with an average benchmark score of zero. This analysis relies on the available data for the Core Ultra 5 245HX and the architectural specifications supplied for the Arc G3.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark entries that directly compare the Intel Arc G3 and the Intel Core Ultra 5 245HX. The head-to-head benchmark array is empty, and the wins counter shows zero for both processors. Consequently, the Arc G3 has no recorded scores in Cinebench R15, R20, R23, or any Passmark workload. The Core Ultra 5 245HX, however, has a full set of 17 benchmark results that define its performance profile.

In Cinebench R23 multi-core, the Core Ultra 5 245HX scores 32,358 points. Its single-core score in the same test is 4,568 points. Cinebench R20 shows a multi-core result of 13,590 and a single-core result of 1,918. In the older Cinebench R15 test, the multi-core score is 3,261 and the single-core score is 460. These results indicate a capable mobile processor for both threaded and lightly threaded workloads.

The Passmark suite provides additional detail. The Core Ultra 5 245HX achieves a multi-thread score of 38,069 and a single-thread score of 4,481. In specific workloads, the processor scores 120,735 in floating point math, 92,150 in integer math, and 393,071 in data compression. Data encryption reaches 30,022, and extended instructions score 31,212. The processor finds prime numbers at a rate of 359, performs random string sorting at 47,616, and delivers a physics score of 2,526.

The average benchmark score for the Core Ultra 5 245HX is 48,287. Its nearest rivals in the database include the Intel Core Ultra 5 235A with an average score of 48,201, which is 0.2% lower. The AMD Ryzen AI Max PRO 380 scores 48,171, also 0.2% lower. The AMD EPYC 4345P scores 48,470, which is 0.4% higher than the Core Ultra 5 245HX. The Intel Core i5-14600K scores 48,618, which is 0.7% higher. These deltas show that the Core Ultra 5 245HX sits in a tight cluster of competing processors, with all four rivals within roughly one percentage point of its average score.

Because the Arc G3 has no benchmark scores, the head-to-head comparison cannot show which processor wins in any specific test. The data simply does not include measurements for the Arc G3. The Core Ultra 5 245HX is the only one of the two with recorded performance results, and those results place it at the 90th percentile among all CPUs.

Architecture Differences

The two processors diverge significantly in their underlying design. The Intel Arc G3 uses the Panther Lake codename and is listed as part of the Arc G3 generation, which is also labeled Panther Lake. The Intel Core Ultra 5 245HX uses the Arrow Lake architecture and belongs to the Core Ultra Series 2 family, specifically the Arrow Lake-HX generation. The process node differs as well: the Arc G3 is fabricated on a 3 nm process by Intel, while the Core Ultra 5 245HX is also on a 3 nm process but fabricated by TSMC. The foundry distinction is meaningful, as Intel produces the Arc G3 and TSMC produces the Core Ultra 5 245HX.

The Core Ultra 5 245HX has a documented transistor count of 17,800 million and a die size of 243 mm². The Arc G3 has no transistor count or die size listed in the database. Cache hierarchies also differ. Both processors have 192 KB of L1 cache per core. The L2 cache is 2.5 MB per core on the Arc G3, while the Core Ultra 5 245HX has 3 MB per core. The shared L3 cache is 18 MB on the Arc G3 and 24 MB on the Core Ultra 5 245HX. These cache differences give the Core Ultra 5 245HX a larger pool of L2 and L3 memory.

Clock speeds favor the Core Ultra 5 245HX. Its base clock is 3.10 GHz and its boost clock is 5.10 GHz. The Arc G3 has a base clock of 1.90 GHz and a boost clock of 4.60 GHz. The Core Ultra 5 245HX runs at higher frequencies at both idle and load states. Thermal design power also differs: the Arc G3 has a TDP of 25 watts, while the Core Ultra 5 245HX has a TDP of 55 watts. The higher TDP on the Core Ultra 5 245HX allows for more sustained performance, but it also implies higher power consumption.

Memory support is another point of divergence. The Arc G3 supports LPDDR5X memory with a dual-channel bus and a memory bandwidth of 136.5 GB/s. The Core Ultra 5 245HX supports DDR5 memory with a dual-channel bus and a memory bandwidth of 102.4 GB/s. The Arc G3 offers a higher theoretical memory bandwidth despite using lower-power memory, while the Core Ultra 5 245HX uses standard DDR5 modules. Neither processor supports ECC memory.

PCIe connectivity is markedly different. The Arc G3 provides Gen 5 with 4 lanes for the CPU, while the Core Ultra 5 245HX provides Gen 5 with 20 lanes for the CPU. The Core Ultra 5 245HX has five times the PCIe lane count, which enables more expansion options such as additional storage or discrete GPUs. The sockets are also different: the Arc G3 uses Intel BGA 2540, and the Core Ultra 5 245HX uses Intel BGA 2114. These sockets are not interchangeable.

Integrated graphics differ between the two. The Arc G3 includes an integrated GPU called Arc B370. The Core Ultra 5 245HX includes an integrated GPU called Arc Xe-LPG Graphics with 48 execution units. The database does not provide performance scores for either integrated GPU, so the comparison is limited to naming and execution unit count. The Core Ultra 5 245HX has an unlocked multiplier, which supports overclocking, while the Arc G3 does not. The release dates also differ: the Core Ultra 5 245HX was released on January 12, 2025, and the Arc G3 was released on May 27, 2026. Both processors are currently marked as active in production.

The Verdict

The recorded data supports a clear choice for users who need measured performance. The Intel Core Ultra 5 245HX has 17 benchmark scores and a 90th percentile ranking, while the Intel Arc G3 has no benchmark scores and a 50th percentile ranking with an average score of zero. The Core Ultra 5 245HX is the only processor of the two with demonstrated performance in the database.

The Core Ultra 5 245HX also has higher clock speeds, with a boost clock of 5.10 GHz versus 4.60 GHz on the Arc G3. It has a larger L3 cache at 24 MB versus 18 MB, and a larger L2 cache at 3 MB per core versus 2.5 MB per core. The Core Ultra 5 245HX provides 20 PCIe Gen 5 lanes versus 4 lanes on the Arc G3, and it has an unlocked multiplier for overclocking. The Arc G3 counters with a lower TDP of 25 watts versus 55 watts, and a higher memory bandwidth of 136.5 GB/s versus 102.4 GB/s.

The Arc G3 uses LPDDR5X memory, which is typically found in power-sensitive designs. Its lower TDP and lower clocks suggest a focus on efficiency rather than raw throughput. The Core Ultra 5 245HX uses DDR5 memory and carries a higher TDP, which aligns with a performance-first positioning. For workloads that benefit from higher sustained frequencies and a larger cache, the Core Ultra 5 245HX has the architectural advantage. For systems that prioritize lower power draw and higher memory bandwidth, the Arc G3 has the specification edge, but no benchmark data exists to confirm real-world performance.

The nearest rival data for the Core Ultra 5 245HX shows it is competitive with other mid-range processors. It sits 0.2% above the Intel Core Ultra 5 235A and the AMD Ryzen AI Max PRO 380, and 0.4% below the AMD EPYC 4345P and 0.7% below the Intel Core i5-14600K. These margins are small, which indicates that the Core Ultra 5 245HX delivers performance in line with its contemporaries. The Arc G3 has no rival data, so its competitive position cannot be assessed from the database.

FAQ

Q: Which processor has more cores?

A: Both processors have 14 cores and 14 threads. The core and thread counts are identical.

Q: What is the boost clock of each processor?

A: The Intel Arc G3 has a boost clock of 4.60 GHz. The Intel Core Ultra 5 245HX has a boost clock of 5.10 GHz.

Q: Which processor has a higher memory bandwidth?

A: The Intel Arc G3 has a memory bandwidth of 136.5 GB/s with LPDDR5X memory. The Intel Core Ultra 5 245HX has a memory bandwidth of 102.4 GB/s with DDR5 memory.

Q: Does the Intel Core Ultra 5 245HX support overclocking?

A: Yes, the Intel Core Ultra 5 245HX has an unlocked multiplier. The Intel Arc G3 does not have an unlocked multiplier.

Q: What is the TDP difference between the two processors?

A: The Intel Arc G3 has a TDP of 25 watts. The Intel Core Ultra 5 245HX has a TDP of 55 watts.

Q: Which processor has a larger L3 cache?

A: The Intel Core Ultra 5 245HX has a shared L3 cache of 24 MB. The Intel Arc G3 has a shared L3 cache of 18 MB.

Q: What is the average benchmark score for the Intel Core Ultra 5 245HX?

A: The average benchmark score is 48,287. Its closest rival, the Intel Core Ultra 5 235A, scores 48,201, which is 0.2% lower.

Where Each One Wins

The Intel Core Ultra 5 245HX wins in every measured benchmark category because it is the only processor with recorded scores. Its Cinebench R23 multi-core score of 32,358 and single-core score of 4,568 demonstrate strong performance in both threaded and single-threaded workloads. The Passmark multi-thread score of 38,069 and single-thread score of 4,481 reinforce this pattern. In data compression, the score of 393,071 indicates high throughput for compression workloads. The floating point math score of 120,735 and integer math score of 92,150 show balanced arithmetic performance. These results make the Core Ultra 5 245HX the clear winner in any workload that has been measured.

The Intel Arc G3 wins in the efficiency and memory bandwidth categories based on specifications. Its TDP of 25 watts is 30 watts lower than the Core Ultra 5 245HX, which suggests it can fit into thinner and lighter laptop designs with smaller cooling solutions. Its memory bandwidth of 136.5 GB/s is 34.1 GB/s higher than the Core Ultra 5 245HX, which could benefit memory-intensive tasks if the processor can sustain that bandwidth. The Arc G3 also uses LPDDR5X memory, which is commonly associated with lower power consumption compared to DDR5. The Arc G3 has no benchmark scores, so these specification advantages cannot be validated with performance data.

The Core Ultra 5 245HX also wins on connectivity and cache capacity. Its 20 PCIe Gen 5 lanes provide substantial room for expansion, while the Arc G3 has only 4 lanes. The larger L2 cache of 3 MB per core and L3 cache of 24 MB give the Core Ultra 5 245HX more on-chip storage for frequently accessed data. The unlocked multiplier on the Core Ultra 5 245HX adds flexibility for users who want to adjust clock speeds, a feature the Arc G3 lacks.

In summary, the Core Ultra 5 245HX is the processor with proven performance, a 90th percentile ranking, and a competitive position against four nearby rivals. The Arc G3 is a lower-power design with higher memory bandwidth but no benchmark evidence in the database. Users seeking a processor with documented results should look to the Core Ultra 5 245HX. Users prioritizing power efficiency and memory bandwidth, based on specifications alone, may consider the Arc G3, but the absence of measured scores leaves its actual performance unverified.