Intel Arc G3 vs Intel Core Ultra 5 245K Comparison

FAQ

Q: What are the core and thread counts of the Intel Arc G3 and the Intel Core Ultra 5 245K?

A: Both processors feature 14 cores and 14 threads, meaning neither uses Hyper-Threading or similar technologies to increase logical processor count.

Q: Which processor has the higher boost clock speed?

A: The Intel Core Ultra 5 245K reaches a boost clock of 5.20 GHz, while the Intel Arc G3 tops out at 4.60 GHz. The Ultra 5 also has a higher base clock at 4.20 GHz versus 1.90 GHz.

Q: How do the two processors differ in memory support?

A: The Arc G3 supports LPDDR5X memory, while the Ultra 5 245K supports DDR5. Both use a dual-channel memory bus, but the Arc G3 has higher memory bandwidth at 136.5 GB/s compared to 102.4 GB/s.

Q: Are both processors built on the same process node?

A: Yes, both are fabricated on a 3 nm process node. However, the Arc G3 uses Intel's own foundry, while the Ultra 5 245K is manufactured by TSMC.

Q: Do both processors have the same socket?

A: No. The Arc G3 uses Intel BGA 2540, which is a mobile socket, while the Ultra 5 245K uses Intel Socket 1851, which is a desktop socket.

Q: Which processor has a higher benchmark percentile ranking?

A: The Intel Core Ultra 5 245K ranks in the 91st percentile among all CPUs, while the Intel Arc G3 sits at the 50th percentile. The Ultra 5 245K also has an average benchmark score of 54053, whereas the Arc G3 has a score of 0 in the database.

Architecture Differences

The two processors come from different segments and design philosophies. The Intel Arc G3 is a mobile processor under the Panther Lake codename, while the Intel Core Ultra 5 245K is a desktop processor under the Arrow Lake-S codename, part of the Core Ultra Series 2. Both use a 3 nm process node, but the foundry differs: Intel fabricates the Arc G3, while TSMC produces the Ultra 5 245K. The Ultra 5 245K has a documented transistor count of 17,800 million and a die size of 243 mm², while the Arc G3 does not have those figures recorded in the database.

Cache layouts show both similarities and differences. Both processors have 192 KB of L1 cache per core. The L2 cache is 2.5 MB per core on the Arc G3 and 3 MB per core on the Ultra 5 245K. The shared L3 cache is 18 MB on the Arc G3 and 24 MB on the Ultra 5 245K. The larger L2 and L3 caches on the Ultra 5 245K give it more on-die storage for active workloads, which can reduce latency when fetching frequently used data.

Memory architecture differs in both type and bandwidth. The Arc G3 uses LPDDR5X memory with a dual-channel bus and 136.5 GB/s of bandwidth. The Ultra 5 245K uses DDR5 with a dual-channel bus and 102.4 GB/s of bandwidth. The Arc G3 offers higher memory bandwidth, which is typical for mobile processors that rely on integrated memory controllers optimized for bandwidth rather than capacity expansion.

PCIe connectivity also separates the two. The Arc G3 provides Gen 5 with 4 lanes (CPU only), while the Ultra 5 245K provides Gen 5 with 20 lanes (CPU only). The desktop part has significantly more PCIe lanes, which matters for multi-device setups like discrete GPUs and NVMe storage. Integrated graphics differ as well: the Arc G3 includes Arc B370 graphics, while the Ultra 5 245K includes Arc Xe-LPG Graphics with 64 execution units.

ECC memory support is another distinguishing feature. The Ultra 5 245K supports ECC memory, while the Arc G3 does not. The Ultra 5 245K also has an unlocked multiplier, allowing overclocking, whereas the Arc G3 does not. The production status for both is listed as active. The release dates are far apart: the Ultra 5 245K was released on 2024-10-23, while the Arc G3 is dated 2026-05-27.

The Verdict

The data points to a clear performance hierarchy. The Intel Core Ultra 5 245K ranks in the 91st percentile among all CPUs, while the Intel Arc G3 sits at the 50th percentile. The benchmark scores confirm that the Ultra 5 245K is the stronger processor in every tested workload, with an average benchmark score of 54053. The Arc G3 has no recorded benchmark scores in the database, which means its performance cannot be quantified against the Ultra 5 245K in direct comparison. The Ultra 5 245K also has a higher boost clock (5.20 GHz versus 4.60 GHz) and a higher base clock (4.20 GHz versus 1.90 GHz), which supports its superior single-thread and multi-thread performance.

For desktop users who need a high-performance processor with ECC support, overclocking capability, and 20 PCIe Gen 5 lanes, the Ultra 5 245K is the clear choice. It also has a launch MSRP of $319, which the database records. For mobile systems, the Arc G3 offers a lower TDP of 25 watts compared to 125 watts for the Ultra 5 245K, which makes it suitable for power-constrained laptops. However, the Arc G3 lacks benchmark scores, so its actual performance level is not demonstrated in this database. The nearest rivals for the Ultra 5 245K include the Intel Xeon 6505P (0.7% higher average score), the Intel Core i7-14700F (0.8% higher), the Intel Xeon Phi 7290 (1.1% higher), and the AMD Ryzen 9 9900X3D (1.3% lower). These are all close to the Ultra 5 245K, indicating that it sits in a competitive performance band.

Specification Differences

| Specification | Intel Arc G3 | Intel Core Ultra 5 245K |

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

| Series | None recorded | Core Ultra Series 2 |

| Codename | Panther Lake | Arrow Lake-S |

| Generation | Arc G3 (Panther Lake) | Ultra 5 (Arrow Lake) |

| Foundry | Intel | TSMC |

| Transistors | Not recorded | 17,800 million |

| Die Size | Not recorded | 243 mm² |

| Base Clock | 1.90 GHz | 4.20 GHz |

| Boost Clock | 4.60 GHz | 5.20 GHz |

| TDP | 25 W | 125 W |

| Socket | Intel BGA 2540 | Intel Socket 1851 |

| L2 Cache | 2.5 MB (per core) | 3 MB (per core) |

| L3 Cache | 18 MB (shared) | 24 MB (shared) |

| Memory Support | LPDDR5X | DDR5 |

| Memory Bandwidth | 136.5 GB/s | 102.4 GB/s |

| ECC Memory | No | Yes |

| PCIe | Gen 5, 4 Lanes (CPU only) | Gen 5, 20 Lanes (CPU only) |

| Integrated Graphics | Arc B370 | Arc Xe-LPG Graphics 64EU |

| Market Segment | Mobile | Desktop |

| Release Date | 2026-05-27 | 2024-10-23 |

| Launch MSRP | None recorded | $319 |

| Multiplier Unlocked | No | Yes |

| Part Number | SA4QZ | SRQCT |

The two share core count (14), thread count (14), L1 cache (192 KB per core), process node (3 nm), and memory bus width (dual-channel). All other fields differ.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark results between the Intel Arc G3 and the Intel Core Ultra 5 245K. The Arc G3 has no recorded benchmark scores at all. The Ultra 5 245K, however, has a full set of benchmark results that establish its performance profile.

In Cinebench tests, the Ultra 5 245K scores 3850 in Cinebench R15 multi-core and 322 in single-core. In Cinebench R20, it scores 15368 multi-core and 2169 single-core. In Cinebench R23, the multi-core score is 25066 and the single-core score is 2132. These numbers indicate strong multi-threaded rendering capability, with single-core performance also well above typical desktop levels.

PassMark tests show a similar pattern. The Ultra 5 245K achieves 43047 in multi-thread performance and 4714 in single-thread performance. Specific workload scores include 458817 in data compression, 33286 in data encryption, 37617 in extended instructions, 414 in find prime numbers, 130678 in floating point math, 98524 in integer math, 3081 in physics, and 55098 in random string sorting. The floating point math score is notably high, suggesting strong vector and scientific computing performance. The integer math score is also solid, which supports general productivity workloads.

Because the Arc G3 has no benchmark scores, the head-to-head comparison is one-sided. The database shows winsA as 0 and winsB as 0, indicating that no direct benchmark wins are recorded for either processor. The only available conclusion is that the Ultra 5 245K has a measurable performance footprint, while the Arc G3 does not yet have one in this database.

Where Each One Wins

The Intel Core Ultra 5 245K wins in every measurable category. Its benchmark scores confirm strength in multi-threaded tasks (Cinebench R23 multi-core of 25066, PassMark multi-thread of 43047) and single-threaded tasks (Cinebench R23 single-core of 2132, PassMark single-thread of 4714). Specific workloads like data compression (458817), floating point math (130678), and integer math (98524) all show high throughput. The processor also wins on connectivity with 20 PCIe Gen 5 lanes, which allows multiple high-speed devices. ECC memory support is present, which is important for data integrity in workstations. The unlocked multiplier enables overclocking, which is a feature for performance tuning. The higher L3 cache (24 MB versus 18 MB) and larger L2 cache (3 MB per core versus 2.5 MB per core) give it an architectural advantage for repeated data access.

The Intel Arc G3 wins on power efficiency. Its TDP is 25 watts versus 125 watts for the Ultra 5 245K, which means it is designed for systems where heat dissipation and battery life are priorities. It also has higher memory bandwidth at 136.5 GB/s compared to 102.4 GB/s, which can benefit memory-bound mobile workloads. The Arc G3 uses LPDDR5X memory, which is typically more power-efficient than desktop DDR5. Its mobile socket (Intel BGA 2540) indicates it is intended for laptops, where the Ultra 5 245K's desktop socket (Intel Socket 1851) is not applicable. The Arc G3 also has a newer release date (2026-05-27) compared to the Ultra 5 245K (2024-10-23), suggesting it is a more recent design.

The use-case split is clear. The Ultra 5 245K is the choice for desktop systems that need high multi-threaded performance, large PCIe connectivity, ECC support, and overclocking. The Arc G3 is the choice for mobile platforms that require low power draw and high memory bandwidth, though its actual performance remains unquantified in the database. The 50th percentile ranking for the Arc G3 suggests it is an average processor among all CPUs, while the 91st percentile for the Ultra 5 245K places it well above the majority of processors.