AMD Ryzen 9 9900X vs AMD Ryzen AI 5 PRO 440 Comparison

The AMD Ryzen 9 9900X and the AMD Ryzen AI 5 PRO 440 are both Zen 5 designs, but they serve completely different segments of the market. The 9900X is a 12-core desktop flagship designed for maximum throughput, while the AI 5 PRO 440 is a 6-core mobile processor built for efficiency and integration. The benchmark data shows a decisive performance gap, with the desktop part winning all 11 recorded head-to-head tests. However, the mobile chip’s strengths lie in its power envelope and platform features, not in raw compute scores.

Where Each One Wins

The AMD Ryzen 9 9900X wins every single benchmark in the comparison set, making its use-case straightforward: it is the clear choice for any workload that prioritizes raw compute power. The data shows a 166.6% lead in data compression, a 169.1% lead in data encryption, and a 199.3% lead in extended instructions. These are not marginal advantages; they represent a multi-generational gap in processing capability. The desktop processor also dominates multithreaded performance, scoring 54643 in the PassMark multithread test compared to 21054 for the mobile part, a 159.5% delta. For rendering, scientific computing, or any heavily parallel task, the 9900X is the definitive option.

The AMD Ryzen AI 5 PRO 440, despite having zero benchmark wins, has a clear purpose in the mobile segment. Its 28-watt TDP and FP8 socket indicate a design focused on laptops and compact systems where thermal and power constraints are paramount. It does not win on speed, but it wins on the ability to exist in a platform where the 9900X cannot function. The recorded data shows it still delivers respectable single-thread performance at 3785 in the PassMark single-thread test, which is only 23.4% behind the desktop part. For a 6-core, 12-thread mobile processor running on a 28-watt envelope, that single-core result indicates a capable architecture for everyday responsiveness and light productivity tasks.

Architecture Differences

Both processors use the Zen 5 architecture, but they are implemented on different chips with different physical characteristics. The 9900X, codenamed Granite Ridge, is built for the AMD Socket AM5 and belongs to the Ryzen 9 generation. The AI 5 PRO 440, codenamed Gorgon Point, uses the AMD Socket FP8 and belongs to the Ryzen AI PRO 400 generation. Both are fabricated by TSMC on a 4 nm process node, so the underlying transistor technology is identical.

The core configurations differ dramatically. The 9900X has 12 cores and 24 threads, while the AI 5 PRO 440 has 6 cores and 12 threads, exactly half. Both processors use an 80 KB L1 cache and a 1 MB L2 cache per core. The L3 cache, however, shows a major separation: the desktop part has 64 MB of L3, while the mobile part has only 8 MB. This eight-fold difference in shared cache is a primary driver of the performance gap in multithreaded and data-intensive workloads.

The physical packages also diverge. The 9900X uses a dual-die design with a reported die size of 2x 70.6 mm², totaling approximately 141.2 mm², and contains 16,630 million transistors. The AI 5 PRO 440 uses a single die with a size of 195 mm², and the transistor count is not recorded in the database. The desktop chip supports PCIe Gen 5 with 24 lanes, while the mobile chip supports PCIe Gen 4 with 16 lanes. Both support dual-channel DDR5 memory with a bandwidth of 89.6 GB/s, though the mobile part also adds LPDDR5X support. Both support ECC memory, and both include an integrated Radeon GPU, though the specific model is only listed for the mobile part as Radeon 840M.

Head-to-Head Benchmarks

The largest single win for the 9900X comes in the find prime numbers test, where it scores 436 against 77 for the AI 5 PRO 440, a 466.2% delta. This test is highly sensitive to core count and clock speed, and the desktop part’s combination of 12 cores and a 5.60 GHz boost clock crushes the mobile part’s 6 cores and 4.80 GHz boost clock. The physics test also shows a massive gap, with the 9900X scoring 3381 versus 1119, a 202.1% advantage.

In floating-point math, the desktop part scores 120083 against 42934, a 179.7% delta. Integer math shows a 174.4% advantage, with scores of 181056 and 65991 respectively. Extended instructions, which test AVX and similar workloads, show a 199.3% lead. Data encryption and compression follow the same pattern, with 169.1% and 166.6% deltas respectively. Random string sorting shows a 164.2% delta.

The smallest gap is in single-thread performance. The 9900X scores 4672, while the AI 5 PRO 440 scores 3785, a 23.4% delta. This is the only test where the mobile part comes within a reasonable distance of the desktop chip. It indicates that for lightly threaded tasks, the architectural advantage of Zen 5 is partially mitigated by the mobile chip’s lower power budget. The multithread test shows a 159.5% delta, with scores of 54643 and 21054, confirming that the core count difference dominates any single-core efficiency gains.

FAQ

Q: Which processor has more cores and threads?

A: The AMD Ryzen 9 9900X has 12 cores and 24 threads. The AMD Ryzen AI 5 PRO 440 has 6 cores and 12 threads.

Q: What is the L3 cache size difference?

A: The 9900X has 64 MB of L3 cache, while the AI 5 PRO 440 has 8 MB.

Q: How much faster is the 9900X in single-thread performance?

A: The 9900X scores 4672 in the PassMark single-thread test, which is 23.4% higher than the AI 5 PRO 440’s score of 3785.

Q: What is the TDP difference between the two?

A: The 9900X has a 120-watt TDP and is a desktop processor. The AI 5 PRO 440 has a 28-watt TDP and is a mobile processor.

Q: Do both processors use the same process node?

A: Yes, both are built by TSMC on a 4 nm process node.

Q: Which processor supports PCIe Gen 5?

A: Only the 9900X supports PCIe Gen 5 with 24 lanes. The AI 5 PRO 440 uses PCIe Gen 4 with 16 lanes.

Specification Differences

The two processors differ in almost every measurable specification except for the architecture, process node, foundry, L1 cache, L2 cache, memory bus width, memory bandwidth, and ECC support. The core count is 12 for the 9900X versus 6 for the AI 5 PRO 440. The thread count is 24 versus 12. The base clock is 4.40 GHz versus 2.00 GHz, and the boost clock is 5.60 GHz versus 4.80 GHz.

The TDP is 120 watts for the desktop part and 28 watts for the mobile part. The sockets are AM5 and FP8, respectively. The 9900X uses the Granite Ridge codename, while the AI 5 PRO 440 uses Gorgon Point. The desktop chip has a dual-die design at 2x 70.6 mm², while the mobile chip uses a single 195 mm² die. The transistor count is listed only for the 9900X at 16,630 million.

L3 cache differs significantly: 64 MB versus 8 MB. Memory support is DDR5 for the desktop part and DDR5 plus LPDDR5X for the mobile part. The integrated GPU is listed as Radeon Graphics for the 9900X and Radeon 840M for the AI 5 PRO 440. The market segment is Desktop for the 9900X and Mobile for the AI 5 PRO 440. The release dates are August 14, 2024 for the 9900X and January 4, 2026 for the AI 5 PRO 440. The 9900X has an unlocked multiplier, while the AI 5 PRO 440 does not. The launch MSRP for the 9900X is $499, while the AI 5 PRO 440 has no recorded launch MSRP.