AMD Ryzen Embedded 9900X vs Intel Core Ultra 7 266V Comparison

AMD Ryzen Embedded 9900X is a 12-core, 24-thread desktop processor built on the Zen 5 architecture, while Intel Core Ultra 7 266V is an 8-core, 8-thread mobile chip from the Lunar Lake generation. The two processors target entirely different segments, with the AMD part offering twice the thread count and a much higher 120 W TDP, while the Intel part sips power at 17 W. The database contains a full benchmark suite for the Intel Core Ultra 7 266V, but no recorded benchmark results for the AMD Ryzen Embedded 9900X, which limits direct numerical comparison to the Intel processor's absolute scores and its position relative to its nearest rivals.

Head-to-Head Benchmarks

The benchmark data for the Intel Core Ultra 7 266V shows a processor that performs strongly in single-threaded workloads. In Cinebench R15 single-core, it scores 235 points, and in Cinebench R20 single-core it reaches 980 points. The Cinebench R23 single-core result is 2335 points, while PassMark single-thread score sits at 3943. These results place the chip in the 76th percentile among all CPUs in the database, indicating solid per-core performance for a mobile part.

Multi-threaded results for the Intel Core Ultra 7 266V reveal its 8-core, 8-thread configuration. Cinebench R15 multi-core score is 1667, Cinebench R20 multi-core reaches 6948, and Cinebench R23 multi-core delivers 16544. PassMark multithread score is 19461. The chip's average benchmark score is 23297, which puts it within 0.1% of the AMD Ryzen 7 5800H (23277), 0.2% of the Intel Core i9-11900F (23254), 0.3% of the Intel Core Ultra 9 288V (23219), and 0.6% of the AMD EPYC 4124P (23167). These are extremely tight margins, with the 266V leading its closest rival by only a tenth of a percent.

Specialized PassMark tests for the Intel Core Ultra 7 266V show data compression at 187050, data encryption at 13822, extended instructions at 15928, and prime number finding at 191. Floating point math scores 56923, integer math scores 41558, physics reaches 1608, and random string sorting finishes at 22905. The data shows a processor that handles integer and floating-point workloads with similar aptitude, but the physics score is relatively modest compared to the math scores.

Since the AMD Ryzen Embedded 9900X has no benchmark entries in the database, the head-to-head comparison relies on architectural specifications rather than measured performance. The AMD part's 12 cores and 24 threads suggest a substantial multi-threaded advantage, but no recorded scores confirm this. The Intel part's 76th percentile ranking and average score of 23297 provide the only concrete performance anchor in this comparison.

Architecture Differences

The AMD Ryzen Embedded 9900X uses the Granite Ridge codename and belongs to the Ryzen Embedded generation built on Zen 5 architecture. It is manufactured on a 4 nm process at TSMC with 16,630 million transistors across a dual-chiplet design of 2x 70.6 mm² die sizes. The Intel Core Ultra 7 266V uses the Lunar Lake architecture, also fabricated by TSMC but on a more refined 3 nm node, and the database does not list its transistor count or die size.

Cache hierarchies differ significantly between the two. The AMD processor allocates 80 KB of L1 cache per core and 1 MB of L2 cache per core, with a large shared 64 MB L3 cache. The Intel processor provides 192 KB of L1 cache per core and 2.5 MB of L2 cache per core, but only 12 MB of shared L3 cache. The AMD chip's 64 MB L3 is more than five times larger than the Intel chip's L3, which can benefit workloads with large working sets.

Clock speeds show the AMD part running at a 4.40 GHz base clock and 5.60 GHz boost clock, while the Intel part operates at 2.20 GHz base and 5.00 GHz boost. The AMD processor's 120 W TDP reflects its desktop orientation, while the Intel processor's 17 W TDP indicates a low-power mobile design. The AMD chip uses AMD Socket AM5 and has an unlocked multiplier, whereas the Intel chip is soldered to Intel BGA 2833 with a locked multiplier.

Memory support also diverges. The AMD Ryzen Embedded 9900X supports DDR5 over a dual-channel bus with 89.6 GB/s bandwidth and includes ECC memory support. The Intel Core Ultra 7 266V supports LPDDR5X, with capacity depending on the motherboard, over a dual-channel bus with a higher 136.5 GB/s bandwidth, but lacks ECC support. PCIe connectivity differs as well: the AMD processor offers Gen 5 with 24 CPU lanes, while the Intel processor offers Gen 5 with only 4 CPU lanes.

Integrated graphics distinguish the two as well. The AMD part includes Radeon Graphics, while the Intel part features Arc 140V. The Intel chip's integrated GPU is a more prominent feature for a mobile processor, while the AMD part's Radeon Graphics is secondary to its CPU-focused desktop role.

Where Each One Wins

The Intel Core Ultra 7 266V wins in scenarios that favor its architectural strengths. Its 3 nm process node and higher memory bandwidth of 136.5 GB/s support memory-intensive tasks. The larger per-core L1 and L2 caches, 192 KB and 2.5 MB respectively, help single-threaded responsiveness. The chip's 76th percentile ranking and average score of 23297, with a 0.1% lead over the AMD Ryzen 7 5800H, indicate competitive all-around performance for a low-power mobile processor.

The AMD Ryzen Embedded 9900X wins in scenarios that favor raw compute resources. Its 12 cores and 24 threads double the Intel part's 8 cores and 8 threads. The 64 MB L3 cache provides a substantial capacity advantage over the Intel chip's 12 MB. The 5.60 GHz boost clock exceeds the Intel part's 5.00 GHz boost. The 120 W TDP allows sustained high-performance operation, and the 24 PCIe Gen 5 lanes support extensive expansion, suited to embedded and desktop workloads. ECC memory support is a differentiator for reliability-sensitive applications.

The data indicates that the Intel part is optimized for efficiency and portability, while the AMD part is built for throughput and scalability. The lack of benchmarks for the AMD processor means its wins are inferred from specifications rather than measured scores, but the architectural differences point to clear use-case separation.

FAQ

Q: What is the core and thread count difference between the two processors?

A: The AMD Ryzen Embedded 9900X has 12 cores and 24 threads, while the Intel Core Ultra 7 266V has 8 cores and 8 threads.

Q: How do their clock speeds compare?

A: The AMD Ryzen Embedded 9900X runs at a 4.40 GHz base clock and 5.60 GHz boost clock. The Intel Core Ultra 7 266V runs at a 2.20 GHz base clock and 5.00 GHz boost clock.

Q: What is the TDP of each processor?

A: The AMD Ryzen Embedded 9900X has a 120 W TDP, while the Intel Core Ultra 7 266V has a 17 W TDP.

Q: Which processor has more L3 cache?

A: The AMD Ryzen Embedded 9900X has 64 MB of shared L3 cache. The Intel Core Ultra 7 266V has 12 MB of shared L3 cache.

Q: How does the Intel Core Ultra 7 266V rank among all CPUs?

A: The Intel Core Ultra 7 266V is in the 76th percentile among all CPUs in the database, with an average benchmark score of 23297.

Q: What are the closest rivals to the Intel Core Ultra 7 266V?

A: The closest rivals are the AMD Ryzen 7 5800H with an average score of 23277 (0.1% difference), the Intel Core i9-11900F at 23254 (0.2%), the Intel Core Ultra 9 288V at 23219 (0.3%), and the AMD EPYC 4124P at 23167 (0.6%).

Specification Differences

| Specification | AMD Ryzen Embedded 9900X | Intel Core Ultra 7 266V |

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

| Series | 9000 series | Core Ultra Series 2 |

| Cores | 12 | 8 |

| Threads | 24 | 8 |

| Base Clock | 4.40 GHz | 2.20 GHz |

| Boost Clock | 5.60 GHz | 5.00 GHz |

| TDP | 120 W | 17 W |

| Socket | AMD Socket AM5 | Intel BGA 2833 |

| Codename | Granite Ridge | Lunar Lake |

| Generation | Ryzen Embedded (Zen 5 (Granite Ridge)) | Ultra 7 (Lunar Lake) |

| Process Node | 4 nm | 3 nm |

| Transistors | 16,630 million | Not listed |

| Die Size | 2x 70.6 mm² | Not listed |

| L1 Cache | 80 KB (per core) | 192 KB (per core) |

| L2 Cache | 1 MB (per core) | 2.5 MB (per core) |

| L3 Cache | 64 MB | 12 MB (shared) |

| Memory Support | DDR5 | LPDDR5X (depends on motherboard) |

| Memory Bandwidth | 89.6 GB/s | 136.5 GB/s |

| ECC Memory | Yes | No |

| PCIe | Gen 5, 24 Lanes (CPU only) | Gen 5, 4 Lanes (CPU only) |

| Integrated Graphics | Radeon Graphics | Arc 140V |

| Market Segment | Desktop | Mobile |

| Release Date | 2025-10-06T17:00:00.000Z | 2024-09-23T17:00:00.000Z |

| Multiplier Unlocked | Yes | No |

| Part Number | 100-000000662E | SRPMMSRPMY |

The specification table shows two processors designed for different purposes. The AMD Ryzen Embedded 9900X is a high-power desktop part with double the cores, triple the L3 cache, and a much higher boost clock. The Intel Core Ultra 7 266V is a low-power mobile part with a smaller process node, higher memory bandwidth, and larger per-core caches. The AMD part supports ECC memory and offers 24 PCIe lanes, while the Intel part lacks ECC and provides only 4 PCIe lanes. The Intel part's release date precedes the AMD part by over a year, reflecting their different product cycles. The recorded benchmark data covers only the Intel Core Ultra 7 266V, with its 76th percentile ranking and average score of 23297 serving as the sole measured performance reference in this comparison.