AMD Ryzen 3 PRO 5355G vs AMD Ryzen 7 6800U Comparison

Head-to-Head Benchmarks

The recorded data shows a decisive sweep for the AMD Ryzen 7 6800U across all eleven head-to-head benchmark comparisons. The Ryzen 3 PRO 5355G does not register a single win. The largest margin of victory for the 6800U comes in the PassMark integer math test, where it scores 77,731 against the 5355G’s 45,910, a delta of 69.3%. Floating point math shows a similar pattern, with the 6800U at 42,246 versus 25,245, representing a 67.3% advantage. These two results highlight the substantial throughput advantage of the 8-core, 16-thread mobile processor in arithmetic-heavy workloads.

Prime number finding is another decisive win for the 6800U, scoring 57 versus 36, a 58.3% delta. This test is particularly sensitive to core count and memory latency, and the 6800U’s larger L3 cache and additional cores provide a clear edge. Data encryption follows at 51.6%, with scores of 15,601 for the 6800U and 10,288 for the 5355G. The 6800U also leads in data compression by 45.3%, posting 244,082 versus 168,041. Multithread performance, as measured by PassMark, shows the 6800U at 20,350 versus 14,033, a 45% delta, which aligns with its doubled thread count.

The physics workload, which often benefits from higher sustained clocks and efficient core scheduling, sees the 6800U at 984 versus 701, a 40.4% delta. Extended instructions, a test of SIMD and AVX-style operations, gives the 6800U a 33.5% lead with 15,935 against 11,935. Random string sorting, a memory-bound test, shows a 37.9% delta, with 25,954 for the 6800U and 18,819 for the 5355G. The closest contest is in single-thread performance, where the two processors are nearly identical. The 6800U scores 3,166 and the 5355G scores 3,096, a delta of only 2.3%. This is the only benchmark where the desktop chip’s higher base clock of 4.00 GHz manages to keep pace with the mobile chip’s 4.70 GHz boost clock.

The aggregate benchmark scores reflect this dominance. The 6800U has an average benchmark score of 27,887, while the 5355G sits at 27,382. The 6800U’s nearest rivals include the AMD Ryzen 7 5800X3D with an average score of 27,896 and the Intel Core i9-10900K at 27,872. The 5355G’s nearest rivals are the Intel Core i7-13700H at 27,355 and the AMD Ryzen 7 5800 at 27,535. Both processors occupy the 79th percentile among all CPUs in the database, indicating that while they are not top-tier parts, they are solidly above the median. The data indicates the 6800U’s advantage is largely a function of core and thread count, as well as a more modern architecture, rather than raw clock speed.

Where Each One Wins

The benchmark results indicate a clear split in use-case scenarios. The AMD Ryzen 7 6800U is the superior choice for any workload that can utilize multiple cores. Its victories in integer math, floating point math, data compression, encryption, and multithread tests all point toward productivity and content creation tasks. Video encoding, 3D rendering, software compilation, and batch photo processing would all see significant improvements with the 6800U. The 67.3% lead in floating point math suggests a strong advantage in scientific computing and physics simulations. The 51.6% lead in encryption makes the 6800U better suited for VPNs, disk encryption, and secure communications.

The AMD Ryzen 3 PRO 5355G does not win any benchmark, but its single-thread score of 3,096 versus 3,166 shows it is nearly equal in lightly threaded tasks. The 5355G’s higher base clock of 4.00 GHz means it can sustain performance in scenarios where the 6800U might be limited by its 15 W TDP, which is typical for a mobile processor. For everyday web browsing, office document editing, and light media playback, the performance difference would be imperceptible. The 5355G also supports ECC memory, a feature absent on the 6800U. This makes the 5355G a candidate for entry-level servers or workstations where data integrity is paramount, even if raw throughput is lower.

The 5355G is a desktop part with a 65 W TDP, while the 6800U is a mobile part with a 15 W TDP. This means the 5355G is designed for systems with active cooling and a stable power supply. In a desktop environment, the 5355G’s lower core count is a clear disadvantage for multitasking. The 6800U, despite its mobile pedigree, outperforms it across every measured metric. The 5355G’s only real advantage in the data is its support for DDR4 memory, which is more common and often lower in latency than the DDR5 supported by the 6800U, though the 6800U’s memory bandwidth of 76.8 GB/s is 50% higher than the 5355G’s 51.2 GB/s.

The Verdict

The data is unambiguous: the AMD Ryzen 7 6800U is the faster processor in every benchmark recorded. The 11-0 win count speaks for itself. When comparing average benchmark scores, the 6800U sits at 27,887, nearly identical to the Ryzen 7 5800X3D (27,896) and ahead of the Intel Core i9-10900K (27,872). The 5355G, at 27,382, is more comparable to an Intel Core Ultra 5 125H (27,507) or an AMD Ryzen 7 5800 (27,535). This places the 5355G in a lower performance tier despite sharing the same 79th percentile ranking.

Users should choose the AMD Ryzen 7 6800U for any application where multi-threaded performance matters. The 69.3% lead in integer math and 67.3% lead in floating point math are not marginal gains; they represent a generational step in capability. The 6800U’s 8 cores and 16 threads, combined with 16 MB of shared L3 cache, provide a robust foundation for demanding workloads. Its Radeon 680M integrated graphics are also more capable than the 5355G’s Radeon Vega 6, though the data does not include gaming benchmarks.

The AMD Ryzen 3 PRO 5355G should be selected only for specific use cases where its features are more important than raw performance. Its support for ECC memory is a differentiator that the 6800U lacks. For a user building a low-power file server or a system requiring error-correcting memory, the 5355G is the only choice between these two. Its 4.00 GHz base clock also means it will feel responsive in single-threaded desktop tasks. However, for any general-purpose workload, the 6800U is the superior part. The 5355G’s 8 MB of L3 cache is half that of the 6800U, and its 4-core, 8-thread configuration limits its ability to handle concurrent processes.

In a laptop, the 6800U is clearly the intended part, given its 15 W TDP and Socket FP7. In a desktop, the 5355G is the only one of the two that fits an AM4 motherboard. The 6800U uses a different socket and is not a drop-in replacement. Ultimately, the choice depends on platform and workload. The data shows the 6800U is faster, but the 5355G has a niche for ECC and desktop simplicity.

FAQ

Q: Which processor is faster in multi-threaded workloads?

A: The AMD Ryzen 7 6800U wins all multi-threaded benchmarks. It scores 20,350 in PassMark multithread versus 14,033 for the Ryzen 3 PRO 5355G, a 45% delta. It also leads in integer math by 69.3% and floating point math by 67.3%.

Q: Is the Ryzen 3 PRO 5355G better in single-core performance?

A: No. The 6800U scores 3,166 in PassMark single-thread, while the 5355G scores 3,096. The delta is only 2.3%, so the 5355G is nearly equal, but it does not win the test.

Q: Does the Ryzen 3 PRO 5355G support ECC memory?

A: Yes, the database lists ECC memory support as true for the 5355G. The 6800U does not support ECC memory.

Q: What is the memory bandwidth difference?

A: The 6800U supports DDR5 memory with a bandwidth of 76.8 GB/s. The 5355G supports DDR4 with a bandwidth of 51.2 GB/s. The 6800U has a 50% higher theoretical memory bandwidth.

Q: How do these processors compare to their nearest rivals?

A: The 6800U has an average score of 27,887, which is 0.1% behind the Intel Core i9-10900K and 0.3% ahead of the Intel Core i5-12600KF. The 5355G has an average score of 27,382, which is 0.1% ahead of the Intel Core i7-13700H and 0.7% behind the Intel Core i5-12600K.

Q: Which processor has more cache?

A: The 6800U has 16 MB of shared L3 cache. The 5355G has 8 MB of L3 cache. Both have 64 KB of L1 cache per core and 512 KB of L2 cache per core.

Architecture Differences

The AMD Ryzen 7 6800U and the AMD Ryzen 3 PRO 5355G are built on different architectural foundations. The 6800U uses the Zen 3+ architecture, codenamed Rembrandt, and is manufactured on a 6 nm process node by TSMC. The 5355G uses the Zen 3 architecture, codenamed Cezanne, on a 7 nm process node. The process node difference is small but contributes to the 6800U’s power efficiency. The 6800U has a TDP of 15 W, while the 5355G has a TDP of 65 W. This makes the 6800U a mobile part designed for thin-and-light laptops, while the 5355G is a desktop part.

The core configurations are fundamentally different. The 6800U has 8 cores and 16 threads, while the 5355G has 4 cores and 8 threads. This is the primary driver of the performance gap. The 6800U’s base clock is 2.70 GHz with a boost clock of 4.70 GHz. The 5355G has a base clock of 4.00 GHz and a boost clock of 4.20 GHz. The 5355G’s higher base clock is typical for a desktop part, but its boost ceiling is lower than the 6800U’s.

Cache hierarchies differ as well. Both processors have 64 KB of L1 cache per core and 512 KB of L2 cache per core. The L3 cache is where they diverge: the 6800U has 16 MB shared, while the 5355G has 8 MB. The 6800U’s larger L3 cache helps with data reuse in multi-threaded workloads. The 5355G has a die size of 180 mm² and contains 10,700 million transistors. The 6800U has a die size of 208 mm², but its transistor count is not listed in the database.

Memory support is another major difference. The 6800U supports DDR5 memory with a dual-channel bus and a bandwidth of 76.8 GB/s. The 5355G supports DDR4 with a dual-channel bus and a bandwidth of 51.2 GB/s. The 6800U also supports PCIe Gen 4 with 20 lanes, while the 5355G supports PCIe Gen 3 with 16 lanes. This gives the 6800U a faster interface for GPUs and NVMe storage. The 6800U does not support ECC memory, while the 5355G does.

Integrated graphics differ as well. The 6800U features a Radeon 680M, while the 5355G features a Radeon Vega 6. The 6800U’s graphics solution is more modern and capable, though no graphics benchmarks are recorded in the database. The 6800U uses the AMD Socket FP7, indicating a mobile platform, while the 5355G uses the AMD Socket AM4, a desktop platform. The 6800U is part of the 6000 series, while the 5355G belongs to the 5000 series. Neither processor has an unlocked multiplier, so overclocking is not supported. The 5355G has a release date of September 2024, while the 6800U’s release date is not listed. Both processors are listed as active in production.