AMD Ryzen 5 PRO 5655G vs AMD Ryzen AI 5 PRO 340 Comparison

The AMD Ryzen 5 PRO 5655G and the AMD Ryzen AI 5 PRO 340 present a clear split in workload priorities. The Ryzen 5 PRO 5655G, a desktop part, dominates in multi-threaded rendering tasks and data processing workloads, while the Ryzen AI 5 PRO 340, a mobile chip, counters with wins in physics simulation, single-thread performance, and prime number computation. The data shows the desktop chip leads in 7 of the 15 head-to-head benchmarks, while the mobile chip takes 8, but the margins of victory tell a more nuanced story about where each processor should be deployed.

Where Each One Wins

The AMD Ryzen 5 PRO 5655G is the clear choice for sustained multi-core compute. Its most decisive victory comes in the Cinebench R23 multi-core test, where it scores 17,249 against the Ryzen AI 5 PRO 340's 11,534, a 49.5% advantage. This pattern repeats across other multi-threaded workloads: data encryption shows a 36% lead, data compression a 15.4% lead, and extended instructions a 14.1% lead. Integer math also favors the desktop chip at 6.8% ahead. These results indicate the Ryzen 5 PRO 5655G is better suited for rendering, code compilation, and heavy data processing where all cores are engaged for extended periods.

Conversely, the AMD Ryzen AI 5 PRO 340 wins in scenarios that favor higher boost clocks and newer architectural efficiency. Its most significant win is in PassMark physics, where it scores 1,084 against 686, a 36.7% advantage. It also leads in single-threaded tests: PassMark single-thread shows 3,758 vs 3,241 (13.8% ahead), and Cinebench R15 single-core shows 276 vs 245 (11.2% ahead). The mobile chip also wins in floating-point math (2.6% ahead) and prime number finding (33.8% ahead). These wins suggest the Ryzen AI 5 PRO 340 excels in latency-sensitive tasks, simulation physics, and workloads that rely on single-core responsiveness.

FAQ

Q: Which processor has the higher average benchmark score?

A: The two chips are nearly identical in overall average. The AMD Ryzen 5 PRO 5655G has an average benchmark score of 28,032, while the AMD Ryzen AI 5 PRO 340 scores 27,932. Both sit at the 80th percentile among all CPUs.

Q: How do these chips compare in Cinebench R23 multi-core performance?

A: The Ryzen 5 PRO 5655G is significantly faster, scoring 17,249 compared to the Ryzen AI 5 PRO 340's 11,534. This represents a 49.5% advantage for the desktop processor.

Q: Which chip is better for single-threaded workloads?

A: The Ryzen AI 5 PRO 340 leads in single-threaded tests. In Cinebench R23 single-core, it scores 1,802 against 2,435 for the Ryzen 5 PRO 5655G (35.1% advantage for the desktop chip), but this is contradicted by PassMark single-thread where the mobile chip wins 3,758 to 3,241 (13.8% ahead). The data is mixed, but the PassMark result and the Cinebench R15 single-core win (276 vs 245) favor the Ryzen AI 5 PRO 340.

Q: What is the TDP difference between the two?

A: The Ryzen 5 PRO 5655G has a 65W TDP, while the Ryzen AI 5 PRO 340 has a 28W TDP. This makes the mobile chip substantially more power-efficient on paper.

Q: Which processor has a higher boost clock?

A: The Ryzen AI 5 PRO 340 has a boost clock of 4.80 GHz, which is higher than the Ryzen 5 PRO 5655G's 4.40 GHz boost. However, the desktop chip has a much higher base clock at 3.90 GHz vs 2.00 GHz.

Q: Do both processors support ECC memory?

A: Yes, both the Ryzen 5 PRO 5655G and the Ryzen AI 5 PRO 340 support ECC memory, according to the specification data.

Head-to-Head Benchmarks

The single largest margin in the entire comparison is the Cinebench R23 multi-core result. The Ryzen 5 PRO 5655G posts 17,249 points against 11,534 for the Ryzen AI 5 PRO 340, a 49.5% lead. This is a decisive gap that indicates the desktop chip's higher sustained power delivery and larger L3 cache (16 MB vs 8 MB) allow it to maintain throughput where the mobile chip's 28W TDP limits sustained performance.

The second-largest margin also belongs to the desktop chip in Cinebench R23 single-core, where it scores 2,435 against 1,802, a 35.1% advantage. This is surprising given the mobile chip's higher boost clock, but the desktop chip's base clock of 3.90 GHz likely keeps it closer to peak more often. Data encryption shows a similar pattern: the Ryzen 5 PRO 5655G wins 15,253 to 11,212, a 36% margin.

The Ryzen AI 5 PRO 340's biggest win comes in PassMark physics, where it scores 1,084 against 686, a 36.7% advantage. This is a significant gap that suggests the newer Zen 5 architecture handles physics simulation more efficiently. It also wins decisively in find prime numbers, 74 vs 49, a 33.8% margin. Single-thread performance favors the mobile chip by 13.8% (3,758 vs 3,241), and Cinebench R15 single-core shows an 11.2% lead (276 vs 245).

In closer contests, the Ryzen AI 5 PRO 340 edges out the desktop chip in floating-point math (39,662 vs 38,649, a 2.6% lead) and multithread (19,215 vs 19,129, a 0.4% lead). The desktop chip counters with a 6.8% win in integer math (67,561 vs 63,233) and a 3.8% win in random string sorting (25,253 vs 24,334). The Cinebench R15 multi-core test is nearly a tie, with the mobile chip winning 1,743 to 1,738, a 0.3% margin.

Specification Differences

The two processors differ fundamentally in several key specifications. The Ryzen 5 PRO 5655G uses a 7nm process node from TSMC, while the Ryzen AI 5 PRO 340 uses a 4nm node, also from TSMC. The desktop chip has a die size of 180 mm², while the mobile chip is slightly larger at 195 mm². Transistor count is listed for the desktop chip at 10,700 million, but is not specified for the mobile chip.

Cache configurations differ significantly. The Ryzen 5 PRO 5655G has 64 KB L1 per core, 512 KB L2 per core, and 16 MB of L3 cache. The Ryzen AI 5 PRO 340 has 80 KB L1 per core, 1 MB L2 per core, but only 8 MB of L3 cache. Memory support also diverges: the desktop chip supports DDR4, while the mobile chip supports DDR5 and LPDDR5X. Memory bandwidth reflects this, with the desktop chip at 51.2 GB/s and the mobile chip at 89.6 GB/s.

Socket and PCIe generations differ as well. The Ryzen 5 PRO 5655G uses AMD Socket AM4 with PCIe Gen 3 (16 lanes), while the Ryzen AI 5 PRO 340 uses AMD Socket FP8 with PCIe Gen 4 (16 lanes). The integrated graphics are also different: the desktop chip has Radeon Vega 7, while the mobile chip has Radeon 840M. The desktop part is a 65W TDP design; the mobile part is 28W.

Architecture Differences

The architectural gap between these two chips is substantial. The Ryzen 5 PRO 5655G is based on the Zen 3 architecture (codename Cezanne), part of the 5000 series. The Ryzen AI 5 PRO 340 uses the Zen 5 architecture (codename Krackan Point), part of the Ryzen AI PRO 300 generation. This represents three full generations of architectural evolution.

The Zen 5 design in the mobile chip uses a hybrid approach with Zen 5 / Zen 5c cores, whereas the desktop chip uses homogeneous Zen 3 cores. Both have 6 cores and 12 threads, so the core count is identical, but the underlying microarchitecture differs. The mobile chip's 4nm process node is more advanced than the desktop's 7nm node, which explains the former's lower power consumption (28W vs 65W) despite a higher boost clock (4.80 GHz vs 4.40 GHz).

Cache hierarchy changes are notable. The Zen 5 chip has larger per-core caches (80 KB L1 and 1 MB L2) compared to Zen 3 (64 KB L1 and 512 KB L2), but the desktop chip has double the L3 cache (16 MB vs 8 MB). This suggests the mobile chip relies on faster per-core access patterns, while the desktop chip benefits from a larger shared cache for multi-threaded workloads.

The Verdict

The data points to a clear use-case separation. The AMD Ryzen 5 PRO 5655G is the processor for sustained multi-threaded workloads. Its 49.5% lead in Cinebench R23 multi-core, 36% lead in data encryption, and 15.4% lead in data compression make it the obvious pick for rendering, video encoding, and server-side data processing. The 16 MB L3 cache and 65W TDP support this profile, allowing the chip to maintain high throughput over long sessions.

The AMD Ryzen AI 5 PRO 340 is the choice for mobile and power-constrained environments that still need strong single-thread performance and physics simulation. Its 36.7% win in PassMark physics, 33.8% win in prime number finding, and 13.8% win in single-thread performance indicate it handles interactive and latency-sensitive tasks better. The 28W TDP and 4nm process make it suitable for thin-and-light laptops, and its 89.6 GB/s memory bandwidth with DDR5 support ensures fast data access.

For users who need a desktop workstation focused on multi-core rendering, the Ryzen 5 PRO 5655G is the clear winner. For those who need a mobile processor with better single-thread responsiveness and physics performance, the Ryzen AI 5 PRO 340 is the better fit. The average scores are nearly identical (28,032 vs 27,932), and both sit at the 80th percentile, but the benchmark distribution could not be more different. Choose based on the specific workload: sustained multi-core for the 5655G, single-thread and simulation for the 340.