Intel Arc G3 EXTREME vs Intel Core Ultra 7 266V Comparison

Head-to-Head Benchmarks

The recorded data shows a decisive overall win for the Intel Arc G3 EXTREME, taking 15 of the 17 head-to-head comparisons against the Intel Core Ultra 7 266V. The margin in many of these tests is substantial, indicating a clear performance tier separation in most workloads.

The largest single-test victory for the Arc G3 EXTREME comes in PassMark data encryption, where it scores 23881 against the Ultra 7's 13822, a 72.8% advantage. Integer math follows closely, with the Arc G3 EXTREME posting 71164 versus 41558, a 71.2% lead. Data compression shows a 64.2% gap (307094 vs 187050), and random string sorting favors the Arc G3 EXTREME by 63% (37331 vs 22905). These are not marginal differences; they represent a substantial throughput advantage for the Panther Lake part in heavily parallel integer and data-manipulation tasks.

In Cinebench, the results are split by workload version and core count. The Arc G3 EXTREME wins Cinebench R15 multicore with 2192 against 1667, a 31.5% margin, and dominates Cinebench R20 multicore with 10945 against 6948, a 57.5% lead. The single-core R15 and R20 tests also go to the Arc G3 EXTREME, with margins of 13.6% (267 vs 235) and 57.7% (1545 vs 980) respectively. However, the pattern reverses in Cinebench R23. The Ultra 7 266V wins R23 multicore with 16544 against 14655, an 11.4% advantage, and takes R23 single-core with 2335 against 1862, a 20.3% lead. This is the most significant reversal in the dataset, suggesting that the newer R23 workload favors the Lunar Lake architecture's efficiency and higher boost clock.

The remaining PassMark suite tests all favor the Arc G3 EXTREME. Floating point math shows a 52.7% gap (86929 vs 56923), extended instructions a 50.8% gap (24017 vs 15928), and multithread a 57.5% gap (30659 vs 19461). Physics testing gives the Arc G3 EXTREME a 56.4% win (2515 vs 1608), and find prime numbers shows a 29.8% edge (248 vs 191). Even in single-thread PassMark, where the Ultra 7's 5.00 boost clock might be expected to help, the Arc G3 EXTREME wins by 8.9% (4293 vs 3943).

The average benchmark score reinforces this split, with the Arc G3 EXTREME at 36699 versus the Ultra 7's 23297. The percentile rankings place the Arc G3 EXTREME at the 85th percentile among all CPUs, while the Ultra 7 sits at the 76th. The nearest rivals for the Arc G3 EXTREME include the Intel Core Ultra 5 225 (avg score 36938, delta -0.6%) and AMD Ryzen 5 5600F (avg score 36945, delta -0.7%), showing it sits in a competitive mid-range desktop-class performance band. The Ultra 7 266V's nearest rivals include the AMD Ryzen 7 5800H (avg score 23277, delta 0.1%) and Intel Core i9-11900F (avg score 23254, delta 0.2%), placing it closer to older high-end mobile and desktop parts.

FAQ

Q: Which processor wins the majority of head-to-head benchmarks?

A: The Intel Arc G3 EXTREME wins 15 of the 17 recorded comparisons. The Intel Core Ultra 7 266V wins only two, both in Cinebench R23.

Q: What is the largest performance gap between the two?

A: The largest margin is in PassMark data encryption, where the Arc G3 EXTREME leads by 72.8% (23881 vs 13822). PassMark integer math is close behind at 71.2% (71164 vs 41558).

Q: In which test does the Core Ultra 7 266V post its biggest win?

A: The Ultra 7 266V wins Cinebench R23 single-core by 20.3%, scoring 2335 against the Arc G3 EXTREME's 1862. Its other win is Cinebench R23 multicore, by 11.4% (16544 vs 14655).

Q: How do the average benchmark scores compare?

A: The Arc G3 EXTREME has an average benchmark score of 36699, while the Ultra 7 266V has an average of 23297. The Arc G3 EXTREME also holds a higher percentile ranking at 85 versus 76.

Q: Does the Ultra 7's higher boost clock help in single-threaded tests?

A: Not consistently. The Arc G3 EXTREME wins PassMark single-thread by 8.9% (4293 vs 3943) and Cinebench R15 single-core by 13.6%, but the Ultra 7 wins Cinebench R23 single-core by 20.3%. The result depends on the specific benchmark workload.

Q: Are both processors on the same manufacturing node?

A: Yes, both are fabricated on a 3 nm process. However, the Arc G3 EXTREME uses Intel's own foundry, while the Ultra 7 266V is manufactured by TSMC.

Architecture Differences

The two processors come from different architectural lineages within Intel's recent lineup. The Intel Arc G3 EXTREME is based on the Panther Lake architecture, a successor generation that represents a departure from the previous Core Ultra naming. It carries the generation label "Arc G3 (Panther Lake)" and uses the Intel BGA 2540 socket. The Intel Core Ultra 7 266V, by contrast, is built on the Lunar Lake architecture, part of the Core Ultra Series 2, and uses the Intel BGA 2833 socket.

Both processors use a 3 nm process node, but the foundry differs. The Arc G3 EXTREME is produced by Intel, while the Ultra 7 266V is produced by TSMC. This is a notable distinction, as it reflects different manufacturing partnerships and potentially different transistor design philosophies, though the database does not record transistor counts or die sizes for either part.

Core counts differ significantly. The Arc G3 EXTREME has 14 cores and 14 threads, indicating a design without hyperthreading. The Ultra 7 266V has 8 cores and 8 threads, also without hyperthreading. The L1 and L2 cache configurations are identical at 192 KB per core and 2.5 MB per core respectively, but shared L3 cache differs: the Arc G3 EXTREME has 18 MB shared L3, while the Ultra 7 266V has 12 MB shared L3.

Integrated graphics also set these parts apart. The Arc G3 EXTREME includes an Arc B390 iGPU, while the Ultra 7 266V includes an Arc 140V iGPU. Both are mobile-market segments with active production status, and both support LPDDR5X memory on a dual-channel bus with identical memory bandwidth of 136.5 GB/s. Neither supports ECC memory, and neither has an unlocked multiplier. PCIe support is the same: Gen 5 with 4 lanes (CPU only).

The release dates are separated significantly, with the Ultra 7 266V launching on 2024-09-23 and the Arc G3 EXTREME launching on 2026-05-27. The Ultra 7's part number is listed as SRPMMSRPMY, while the Arc G3 EXTREME's part number is SA4R3.

Specification Differences

The table below lists only the fields where the two processors differ, based on recorded data:

| Specification | Intel Arc G3 EXTREME | Intel Core Ultra 7 266V |

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

| Cores | 14 | 8 |

| Threads | 14 | 8 |

| Base Clock | 1.90 GHz | 2.20 GHz |

| Boost Clock | 4.70 GHz | 5.00 GHz |

| TDP | 25 W | 17 W |

| Socket | Intel BGA 2540 | Intel BGA 2833 |

| Codename | Panther Lake | Lunar Lake |

| Generation | Arc G3 (Panther Lake) | Ultra 7 (Lunar Lake) |

| Foundry | Intel | TSMC |

| L3 Cache | 18 MB (shared) | 12 MB (shared) |

| Integrated Graphics | Arc B390 | Arc 140V |

| Release Date | 2026-05-27 | 2024-09-23 |

| Part Number | SA4R3 | SRPMMSRPMY |

The memory support fields appear identical in the recorded data (LPDDR5X, dual-channel, 136.5 GB/s bandwidth), though the Ultra 7's memory support notes that it depends on the motherboard. The Arc G3 EXTREME's memory support field does not carry that qualifier.

Where Each One Wins

The benchmark data splits the two processors into distinct use-case profiles. The Intel Arc G3 EXTREME is the clear choice for heavily parallel, compute-intensive workloads. Its 14 cores and larger 18 MB L3 cache drive substantial wins in PassMark integer math, floating point math, data compression, encryption, and random string sorting. For tasks like video encoding, data processing pipelines, scientific simulation, or any workload that scales with core count, the Arc G3 EXTREME's advantages range from roughly 30% to over 70% over the Ultra 7. The multithread PassMark score of 30659 versus 19461 (a 57.5% gap) and Cinebench R20 multicore results (10945 vs 6948, also a 57.5% gap) reinforce this pattern.

The Intel Core Ultra 7 266V, despite having fewer cores and a lower TDP of 17 W, shows its strength in the Cinebench R23 suite. Its R23 single-core score of 2335 is 20.3% higher than the Arc G3 EXTREME's 1862, and its R23 multicore score of 16544 is 11.4% higher. This suggests that the Ultra 7's higher boost clock of 5.00 GHz, combined with the Lunar Lake architecture's efficiency, delivers better performance in workloads that are sensitive to per-core clock speed and architectural efficiency, particularly those that use the AVX-512 or similar instruction sets that R23 tends to exercise. For light-threaded productivity apps, web browsing, and office-style tasks that are not fully parallel, the Ultra 7's single-thread performance in R23 could be the deciding factor.

The TDP difference is also relevant. The Ultra 7's 17 W TDP versus the Arc G3 EXTREME's 25 W means the Ultra 7 is more power-efficient in lightly loaded scenarios, which matters for fanless designs or tightly power-constrained mobile systems. However, the Arc G3 EXTREME's higher TDP budget likely contributes to its ability to sustain higher multi-core throughput in longer workloads.

The Verdict

The data points to a simple conclusion: choose the Intel Arc G3 EXTREME for maximum multi-threaded throughput, and choose the Intel Core Ultra 7 266V for single-thread efficiency in specific newer benchmarks. The Arc G3 EXTREME wins 15 out of 17 comparisons, and its wins are often by large margins. It holds an 85th percentile ranking versus the Ultra 7's 76th, and its average benchmark score is about 57.5% higher (36699 vs 23297). For any workload that can use more than 8 cores, the Arc G3 EXTREME's 14 cores and larger cache provide a decisive edge.

The Ultra 7 266V is not without merit. Its wins in Cinebench R23, particularly the 20.3% single-core lead, indicate that in certain modern, well-optimized workloads, the higher boost clock and Lunar Lake efficiency produce better results. Its lower 17 W TDP also makes it attractive for ultra-portable devices where battery life and thermal headroom are primary constraints. But the database shows that these advantages are limited to a narrow set of tests, and the overall performance profile is significantly lower.

For a builder focused on raw compute performance in a mobile form factor, the Arc G3 EXTREME is the stronger part. For a builder prioritizing single-thread speed in specific applications and lower power draw, the Ultra 7 266V has a defined, if narrow, role. The two processors occupy different tiers, with the Arc G3 EXTREME sitting closer to desktop-class performance levels (its nearest rivals include the Core Ultra 5 225 and Ryzen 5 5600F) while the Ultra 7 266V aligns with earlier high-end mobile parts (nearest rivals include the Ryzen 7 5800H and Core i9-11900F). The choice ultimately depends on whether the workload favors core count and cache capacity, or clock speed and architectural efficiency.