AMD Ryzen 3 PRO 5355G vs AMD Ryzen AI 5 PRO 340 Comparison

Where Each One Wins

The benchmark record splits cleanly along workload type, and the data is unambiguous: the AMD Ryzen AI 5 PRO 340 wins every recorded head-to-head test. Across 11 compared benchmarks, it takes 11 victories. The Ryzen 3 PRO 5355G does not post a single win. That does not mean the desktop part is without merit, but its strengths are contextual rather than competitive in raw score terms.

For single-threaded and lightly threaded tasks, the Ryzen AI 5 PRO 340 leads by a meaningful margin. In PassMark single-thread testing it scores 3758 against 3096 for the Ryzen 3 PRO 5355G, a 21.4% advantage. That gap carries over to Cinebench R23 single-core, where the mobile chip records 1802 points versus 276 in the older Cinebench R15 single-core test. The Ryzen AI 3 PRO 5355G has no direct Cinebench scores recorded in the database, so direct single-core comparisons there rely on PassMark data.

Multi-threaded workloads show an even wider spread. The Ryzen AI 5 PRO 340 posts 11534 in Cinebench R23 multi-core, while the Ryzen 3 PRO 5355G has no Cinebench R23 multi-core result in the database. PassMark multi-thread, however, tells the same story: 19215 versus 14033, a 36.9% gap. The mobile processor's 6 cores and 12 threads simply outmuscles the 4-core, 8-thread desktop part across every throughput metric.

The biggest single delta appears in prime number calculation. PassMark find prime numbers scores 74 for the Ryzen AI 5 PRO 340 against 36 for the Ryzen 3 PRO 5355G, a 105.6% difference more than double the desktop chip. Floating-point math is next at 57.1% ahead (39662 versus 25245), followed closely by physics simulation at 54.6% ahead (1084 versus 701). Integer math sits at 37.7% ahead (63233 versus 45910). Data compression comes in at 31.9% ahead (221581 versus 168041), and extended instructions at 31.7% ahead (15721 versus 11935). Random string sorting is the smallest multi-threaded win at 29.3% ahead (24334 versus 18819), with data encryption the narrowest overall at 9% ahead (11212 versus 10288).

What does each processor actually win, then? The Ryzen AI 3 PRO 5355G wins scenarios where its 4.00 GHz base clock and 4.20 GHz boost clock matter more than core count. With fewer threads to schedule, the desktop chip relies on efficiency per thread within its 8 threads, and its 65 W TDP envelope suits sustained workloads that stay under that cap. Still, the recorded scores do not show any test where that advantage yields a victory in the database's measured benchmarks. The Ryzen AI 5 PRO 340, conversely, wins every test where raw score is the metric, and the recorded data shows no exceptions.

The Verdict

The data supports a straightforward conclusion: the AMD Ryzen AI 5 PRO 340 is the faster processor across all recorded benchmarks in this comparison. It wins 11 of 11 head-to-head tests, with deltas ranging from 9% to 105.6%. Its average benchmark score of 27932 places it in the 80th percentile of all CPUs tracked in the database, while the Ryzen 3 PRO 5355G sits at the 79th percentile with an average score of 27382. The mobile chip's aggregate average is 27932, only 2% above the desktop part's 27382, but the per-test dominance is consistent.

Buyers should choose the Ryzen AI 5 PRO 340 if they need the highest recorded throughput in the database's measured workloads. It leads by 21.4% in single-thread, 36.9% in multi-thread, 57.1% in floating-point math, and 105.6% in prime number searches. It also brings newer platform features: Zen 5 architecture on a 4 nm process, PCIe Gen 4, and DDR5 memory support. For mobile users, the 28 W TDP makes it a fit for thin-and-light systems that still need strong compute.

Choose the Ryzen 3 PRO 5355G if the desktop platform, socket AM4, and 65 W TDP are the priority. It boots to a 4.00 GHz base clock and boosts to 4.20 GHz, which is a higher base frequency than the mobile chip's 2.00 GHz base. It also runs on DDR4 memory, which may be more accessible for existing AM4 builds. The recorded benchmarks, though, show no test where the desktop part wins. Its strongest relative showing is in data encryption, where it trails by only 9%, and in single-thread, where the deficit is 21.4% behind. The Ryzen 3 PRO 5355G remains a capable desktop processor for its platform, but the Ryzen AI 5 PRO 340 is ahead in every measured category.

The percentile data reinforces this split by rival comparison. The Ryzen AI 5 PRO 340's nearest rivals include the AMD Ryzen 7 5800X3D at 27896, the AMD Ryzen 7 6800U at 27887, the Intel Core i9-10900K at 27872, and the Intel Core i9-12900H at 28003. Its deltas are 0.1%, 0.2%, 0.2%, and -0.3% respectively, meaning it trades blows with those parts. The Ryzen 3 PRO 5355G's nearest rivals are the Intel Core i7-13700H at 27355, the Intel Core Ultra 5 125H at 27507, the AMD Ryzen 7 5800 at 27535, and the Intel Core i5-12600K at 27578, with deltas of 0.1%, -0.5%, -0.6%, and -0.7%. The Ryzen 3 PRO 5355G holds ground against those competitors, which puts its performance in a similar class despite the older architecture.

Head-to-Head Benchmarks

The largest margin in the entire comparison is passmark_find_prime_numbers. The Ryzen AI 5 PRO 340 scores 74, while the Ryzen 3 PRO 5355G scores 36, a 105.6% difference. This task stresses integer-heavy loops and simple arithmetic, and the Zen 5 architecture with its 6 cores and 12 threads crushes the older part. The desktop chip's 4 cores and 8 threads cannot keep pace.

Floating-point math is the second largest win. The Ryzen AI 5 PRO 340 records 39662 against 25245, a 57.1% lead. This workload benefits from the mobile chip's larger L2 cache (1 MB per core versus 512 KB per core) and newer instruction handling. Physics simulation follows at 54.6% ahead: 1084 versus 701. This test often scales with core count and memory bandwidth, and the Ryzen AI 5 PRO 340's dual-channel DDR5 support at 89.6 GB/s outruns the Ryzen 3 PRO 5355G's DDR4 at 51.2 GB/s.

Integer math shows a 37.7% lead (63233 versus 45910). Multi-threaded performance is 36.9% ahead (19215 versus 14033). Data compression is 31.9% ahead (221581 versus 168041). Extended instructions are 31.7% ahead (15721 versus 11935). Random string sorting is 29.3% ahead (24334 versus 18819). Single-thread performance is 21.4% ahead (3758 versus 3096). Data encryption is the closest test at 9% ahead (11212 versus 10288). Even the narrowest win is still a decisive margin, and the Ryzen 3 PRO 5355G never takes the lead in any recorded test.

The Cinebench results are only available for the Ryzen AI 5 PRO 340 in the database it scored 1743 in R15 multi-core, 276 in R15 single-core, 11534 in R23 multi-core, and 1802 in R23 single-core. These numbers place it in the range of the Ryzen 7 5800X3D and Intel Core i9-10900K, according to its nearest rivals. The Ryzen 3 PRO 5355G lacks Cinebench entries in the database, so direct comparison on those tests is not possible, but the PassMark suite covers enough workload variety to establish the overall ranking.

FAQ

Q: Which processor wins more benchmarks in this comparison?

A: The AMD Ryzen AI 5 PRO 340 wins all 11 head-to-head benchmarks recorded in the database, leaving the AMD Ryzen 3 PRO 5355G with 0 wins.

Q: What is the biggest performance difference between the two?

A: The largest margin is in passmark_find_prime_numbers, where the Ryzen AI 5 PRO 340 scores 74 against the Ryzen 3 PRO 5355G's 36, a 105.6% difference.

Q: How much faster is the Ryzen AI 5 PRO 340 in single-threaded performance?

A: In PassMark single-thread testing, the Ryzen AI 5 PRO 340 scores 3758 versus 3096 for the Ryzen 3 PRO 5355G, a 21.4% advantage.

Q: Does the Ryzen 3 PRO 5355G have any advantages in the recorded data?

A: It has a higher base clock of 4.00 GHz versus 2.00 GHz, and a higher TDP of 65 W versus 28 W, but no recorded benchmark win in this comparison.

Q: How do the two processors compare in memory bandwidth?

A: The Ryzen AI 5 PRO 340 supports DDR5 and LPDDR5X with 89.6 GB/s bandwidth, while the Ryzen 3 PRO 5355G uses DDR4 with 51.2 GB/s.

Q: What are the nearest rivals for each processor?

A: The Ryzen AI 5 PRO 340's nearest rivals include the AMD Ryzen 7 5800X3D, AMD Ryzen 7 6800U, Intel Core i9-10900K, and Intel Core i9-12900H. The Ryzen 3 PRO 5355G's nearest rivals include the Intel Core i7-13700H, Intel Core Ultra 5 125H, AMD Ryzen 7 5800, and Intel Core i5-12600K.

Architecture Differences

The two processors come from different design generations and target different segments. The AMD Ryzen AI 5 PRO 340 uses Zen 5 architecture under the codename Krackan Point, built on a 4 nm process at TSMC. The AMD Ryzen 3 PRO 5355G uses Zen 3 architecture under the codename Cezanne, built on a 7 nm process, also at TSMC. The process node difference is significant: 4 nm versus 7 nm, which helps explain the mobile chip's higher efficiency despite a lower TDP.

Core and thread counts differ as well. The Ryzen AI 5 PRO 340 has 6 cores and 12 threads, while the Ryzen 3 PRO 5355G has 4 cores and 8 threads. Both are multithreaded, but the mobile part has 50% more cores and 50% more threads. The Ryzen AI 5 PRO 340 belongs to the Ryzen AI PRO 300 generation, which combines Zen 5 and Zen 5c cores, while the Ryzen 3 PRO 5355G belongs to the Ryzen 3 generation with Zen 3 Cezanne cores.

Cache layouts diverge, too. The Ryzen AI 5 PRO 340 has 80 KB of L1 cache per core, 1 MB of L2 per core, and 8 MB of L3. The Ryzen 3 PRO 5355G has 64 KB of L1 per core, 512 KB of L2 per core, and 8 MB of L3. Both share the same total L3 capacity, but the mobile chip has larger L1 and L2 allocations per core. The Ryzen 3 PRO 5355G's die size is 180 mm² with 10,700 million transistors, while the Ryzen AI 5 PRO 340 has a die size of 195 mm² and no transistor count recorded in the database.

Memory support differs substantially. The Ryzen AI 5 PRO 340 supports DDR5 and LPDDR5X with dual-channel memory and 89.6 GB/s bandwidth. The Ryzen 3 PRO 5355G supports DDR4 with dual-channel memory and 51.2 GB/s bandwidth. Both support ECC memory. PCIe connectivity also differs: the Ryzen AI 5 PRO 340 has PCIe Gen 4 with 16 lanes from the CPU, while the Ryzen 3 PRO 5355G has PCIe Gen 3 with 16 lanes from the CPU.

Integrated graphics differ as well. The Ryzen AI 5 PRO 340 features Radeon 840M graphics, while the Ryzen 3 PRO 5355G features Radeon Vega 6. Both are integrated solutions, but the Radeon 840M is a newer design paired with the Zen 5 platform.

Socket and packaging are distinct. The Ryzen AI 5 PRO 340 uses AMD Socket FP8 and targets the mobile market, with a TDP of 28 W. The Ryzen 3 PRO 5355G uses AMD Socket AM4 and targets the desktop market, with a TDP of 65 W. The Ryzen AI 5 PRO 340 has a base clock of 2.00 GHz and a boost clock of 4.80 GHz, while the Ryzen 3 PRO 5355G has a base clock of 4.00 GHz and a boost clock of 4.20 GHz. Neither processor has an unlocked multiplier.

Production status for both is active. The Ryzen AI 5 PRO 340 was released in January 2025, while the Ryzen 3 PRO 5355G was released in September 2024. Neither has a launch MSRP recorded in the database. The Ryzen AI 5 PRO 340 carries the part number 100-000001600, and the Ryzen 3 PRO 5355G carries the part number 100-000001749.