Intel Core Ultra 7 266V vs Intel Core Ultra 9 288V Comparison

The Intel Core Ultra 7 266V and Intel Core Ultra 9 288V are two Lunar Lake mobile processors that present a fascinating divergence in benchmark results, despite sharing the same core count, architecture, and process node. While the Ultra 9 288V is configured with higher clocks and a higher TDP, the benchmark data reveals a more nuanced picture, with the Ultra 7 266V securing decisive victories in some of the most demanding multi-threaded tests. This analysis breaks down the head-to-head results, use-case implications, and architectural differences to determine which chip is superior for specific workloads.

Head-to-Head Benchmarks

The most striking result in the entire dataset is the Cinebench R23 multi-core test, where the Core Ultra 7 266V delivers a score of 16544 against the Ultra 9 288V’s 10178. This is a massive 62.5% advantage for the lower-tier chip, a delta that defies the typical expectation that a higher-end part with a higher base clock would dominate. This suggests the Ultra 7 266V is capable of sustaining high performance under sustained all-core loads, whereas the Ultra 9 288V appears to throttle significantly or is limited by its power envelope in this specific test.

The single-core results are far more consistent with the product hierarchy. In Cinebench R23 single-core, the Ultra 7 266V again wins, scoring 2335 against 1950, a 19.7% lead. However, the Ultra 9 288V strikes back in Cinebench R15 single-core with a score of 301.5 versus 235, a -22.1% delta in favor of the Ultra 9. This discrepancy between Cinebench versions is curious; the older R15 benchmark shows the Ultra 9 leading by a wide margin, while the newer R23 shows the Ultra 7 pulling far ahead. It implies that the benchmark methodology or the workload characteristics of each version interact very differently with the two chips' power management and boost behavior.

Looking at the PassMark suite, the Ultra 9 288V claims the majority of wins, taking 8 out of 11 tests when counting the duplicate single-thread results. The most significant of these is in integer math, where the Ultra 9 scores 44019 against 41558, a -5.6% delta. It also wins in floating-point math (59536 vs 56923, -4.4%), multi-threaded performance (19810 vs 19461, -1.8%), and physics simulation (1637 vs 1608, -1.8%). These are all consistent with the Ultra 9’s higher 3.30 GHz base clock and 5.10 GHz boost clock, which provide a tangible edge in lightly-threaded and mixed workloads.

The Ultra 7 266V, however, is not without its own PassMark victories. It wins in data compression (187050 vs 186521, a narrow 0.3% margin), extended instructions (15928 vs 15613, 2% lead), and random string sorting (22905 vs 22622, 1.3% lead). These are all tasks that can be heavily dependent on memory bandwidth and cache efficiency. The Ultra 7 266V also takes the Cinebench R20 multi-core test? No, the data shows the Ultra 9 288V wins that one by -1.7%, scoring 7069 to the Ultra 7’s 6948. This shows that the Ultra 7’s R23 dominance is not a universal multi-core advantage, making its R23 result even more anomalous and worth investigating.

Where Each One Wins

The benchmark data suggests a clear split in workload suitability. The Intel Core Ultra 9 288V is the winner for most everyday and productivity-oriented tasks. Its wins in PassMark’s integer math, floating-point math, and single-thread tests indicate it will feel snappier in general application usage, office productivity, and web browsing. The 7.7% lead in PassMark single-thread (4274 vs 3943) reinforces this, as does its strong showing in Cinebench R15 single-core. For users who primarily need a responsive processor for mixed workloads and light-to-moderate content creation, the Ultra 9 288V’s higher clocks provide a consistent, if modest, performance uplift.

Conversely, the Intel Core Ultra 7 266V is the clear winner in heavy, sustained multi-threaded rendering workloads. The 62.5% advantage in Cinebench R23 multi-core is a colossal lead that dwarfs all other differences. If a user’s primary application is 3D rendering, video encoding, or other tasks that use Cinebench R23-like workloads, the Ultra 7 266V is unequivocally the stronger choice. Its additional wins in data compression and random string sorting also point to an advantage in data-heavy or compression-heavy tasks, potentially making it better suited for data analysis pipelines or file archiving scenarios. The Ultra 7 266V also holds a lead in the extended instructions test, which could be beneficial for specific scientific or cryptographic workloads.

FAQ

Q: Is the Intel Core Ultra 9 288V always faster than the Core Ultra 7 266V?

A: No. While the Ultra 9 288V wins 11 of the 17 head-to-head benchmarks, the Ultra 7 266V wins the most impactful test, Cinebench R23 multi-core, by a massive 62.5% margin. The Ultra 9 288V dominates in single-threaded and light-threaded tasks like PassMark’s integer and floating-point math, but it is significantly slower in that one crucial rendering benchmark.

Q: Why is the Core Ultra 7 266V so much faster in Cinebench R23 multi-core?

A: The data shows a 62.5% delta in favor of the Ultra 7 266V (16544 vs 10178). This suggests the Ultra 9 288V may be hitting a power or thermal limit that forces it to reduce clocks during this sustained all-core workload, while the Ultra 7 266V is able to maintain higher performance. This is not a universal advantage, as the Ultra 9 288V actually wins Cinebench R20 multi-core by 1.7%.

Q: Which processor has better single-core performance?

A: The results are mixed. The Ultra 9 288V wins PassMark single-thread (4274 vs 3943) and Cinebench R15 single-core (301.5 vs 235). However, the Ultra 7 266V wins Cinebench R23 single-core (2335 vs 1950). The Ultra 9 288V appears better in older or more direct single-thread tests, while the Ultra 7 266V excels in the more modern R23 version.

Q: Do both processors have the same integrated graphics?

A: Yes, both the Intel Core Ultra 7 266V and the Intel Core Ultra 9 288V are listed with the integrated graphics "Arc 140V." There is no difference in the iGPU model between the two.

Q: What is the performance difference in data encryption?

A: The Core Ultra 9 288V is slightly ahead in the PassMark data encryption test, scoring 14141 versus the Ultra 7 266V's 13822. This is a 2.3% delta in favor of the Ultra 9 288V.

Q: Are these processors in the same performance percentile?

A: Yes, both the Intel Core Ultra 7 266V and the Intel Core Ultra 9 288V have a percentileVsAllCpus of 76, placing them in the same overall performance tier relative to all CPUs in the database.

Specification Differences

The fundamental specifications reveal the intended performance hierarchy. The Intel Core Ultra 9 288V has a base clock of 3.30 GHz and a boost clock of 5.10 GHz, while the Intel Core Ultra 7 266V operates at a 2.20 GHz base clock and a 5.00 GHz boost clock. This gives the Ultra 9 a substantial 1.10 GHz advantage in base frequency and a 0.10 GHz advantage in boost frequency.

The TDP (Thermal Design Power) also differs significantly, with the Ultra 9 288V rated at 30 watts and the Ultra 7 266V at 17 watts. This 13-watt difference is crucial, as it likely explains the Ultra 7's surprising multi-core win; the lower TDP part may be allowed to run at more efficient clocks, while the higher TDP Ultra 9 may hit its power ceiling differently in certain scenarios. Both chips share the same socket (Intel BGA 2833), memory bus (Dual-channel), and memory bandwidth (136.5 GB/s). The memory support field is listed as "LPDDR5X" for the Ultra 9 288V, while the Ultra 7 266V's field adds "Depends on motherboard," though both support the same type. Neither has a launch MSRP listed in the data.

Architecture Differences

Architecturally, the two processors are nearly identical. Both are built on the "Lunar Lake" architecture, use a 3 nm process node from TSMC, and have 8 cores and 8 threads. The cache structure is exactly the same: 192 KB of L1 per core, 2.5 MB of L2 per core, and 12 MB of shared L3 cache. Both support PCIe Gen 5 with 4 lanes (CPU only) and do not support ECC memory.

The only meaningful differences in the architecture are the clock speeds and TDP, which are more configuration than fundamental design. They share the same "Arc 140V" integrated graphics, same dual-channel LPDDR5X memory bus, and same release date of 2024-09-23. The part numbers differ, but the core design, cache hierarchy, and process node are identical. This means the performance differences observed in the benchmarks can be attributed almost entirely to the clock speed and power configuration, rather than any structural architectural advantage.

The Verdict

The data presents a compelling and counterintuitive story. For most users, the Intel Core Ultra 9 288V is the safer choice for a general-purpose laptop. Its higher base and boost clocks translate to wins in 11 of the 17 benchmarks, particularly in single-threaded performance (PassMark single-thread 4274 vs 3943), integer math, and floating-point math. If a user prioritizes a responsive system for everyday tasks, office work, and light creative work, the Ultra 9 288V's consistent, across-the-board edge in these areas makes it the better option.

However, for a specific but critical use case, the Intel Core Ultra 7 266V is the definitive winner. The 62.5% lead in Cinebench R23 multi-core is not a minor edge; it is a generational leap in performance within the same product family. A user whose primary workflow involves sustained, all-core rendering or similar workloads should choose the Ultra 7 266V without hesitation. The data also shows the Ultra 7 266V has a slight edge in data compression and extended instructions, adding to its appeal for specialized tasks. The choice is not about which is "better" overall, but which is better for the specific workload. The Ultra 9 288V is the all-rounder, while the Ultra 7 266V is the specialized rendering champion.