AMD Ryzen 5 2600 vs AMD Ryzen 5 PRO 4655GE Comparison

Where Each One Wins

The recorded data splits these two six-core, twelve-thread processors into two distinct personalities. The AMD Ryzen 5 2600 wins five of the thirteen head-to-head comparisons, while the AMD Ryzen 5 PRO 4655GE takes eight. That split is not random; it maps cleanly onto workload type.

The Ryzen 5 2600 dominates in tasks that reward raw integer throughput and legacy instruction handling. Its biggest wins come in prime number finding, where it leads by 32.1%, and data encryption, where it is 7.3% ahead. It also takes physics simulation by 13.7%, random string sorting by 1%, and the Cinebench R15 multi-core test by 2.9%. These are workloads where the older architecture's higher base clock of 3.40 GHz versus 3.30 GHz, combined with its larger 16 MB shared L3 cache, appears to matter more than the newer process node.

The Ryzen 5 PRO 4655GE wins the other side of the ledger. Its most dramatic victory is in extended instructions, where it scores 11792 against 7168, a 39.2% advantage. That is the single largest delta in the entire comparison. It also leads in floating point math by 17.9%, single-thread performance by 15.8%, integer math by 8.2%, and multi-thread throughput by 7.1%. Data compression favors it by 3.1%, and Cinebench R15 single-core goes its way by 8%. The 4655GE's boost clock of 4.20 GHz against 3.90 GHz, combined with the Zen 2 architecture's higher instructions per clock, explains this pattern.

The use-case split is clear. The 2600 is the pick for encryption-heavy, integer-bound, or physics-simulation tasks. The 4655GE is the pick for modern floating-point, SIMD-style, and single-thread-sensitive workloads. The 4655GE also holds a 7.1% edge in the aggregate multi-thread PassMark score, suggesting its architectural efficiency overcomes the 2600's cache advantage in mixed workloads.

Architecture Differences

The two chips come from different generations and fundamentally different design philosophies. The Ryzen 5 2600 is a 2000 series part built on the Zen+ architecture, specifically the Pinnacle Ridge revision. It uses a 12 nm process from GlobalFoundries, packs 4,800 million transistors into a 213 mm² die, and features a first-generation Zen core layout with refinements. The Ryzen 5 PRO 4655GE belongs to the 4000 series, uses the Zen 2 architecture in its Renoir form, and is fabricated on TSMC's 7 nm node. That node shrink allows 9,800 million transistors, more than double the transistor count, in a smaller 156 mm² die.

Cache configurations differ significantly. The 2600 provides 96 KB of L1 per core, 512 KB of L2 per core, and a generous 16 MB of shared L3 cache. The 4655GE reduces L1 to 64 KB per core, keeps L2 at 512 KB per core, and halves shared L3 to 8 MB. The 2600's larger L3 is a notable advantage for cache-sensitive integer workloads, which shows up in its prime number and encryption wins. The 4655GE compensates with the Zen 2 core redesign, which improved branch prediction, load/store bandwidth, and floating-point execution.

Clock behavior also diverges. The 2600 has a 3.40 GHz base and 3.90 GHz boost. The 4655GE has a lower 3.30 GHz base but a much higher 4.20 GHz boost. The 4655GE also comes with a dramatically lower thermal envelope: 35 W TDP versus 65 W. That makes it a far more efficient part on paper, though the data cannot directly quantify power draw.

Feature differences extend beyond the core. The 4655GE includes Radeon Vega 7 integrated graphics, while the 2600 has none. The 4655GE supports ECC memory, the 2600 does not. The 4655GE exposes 20 PCIe Gen 3 lanes from the CPU, the 2600 only 16. Both use DDR4 memory in dual-channel mode, but the 4655GE has a higher theoretical memory bandwidth of 51.2 GB/s versus 46.9 GB/s. The 2600 has an unlocked multiplier for overclocking; the 4655GE is locked. The 2600 launched in April 2018 at a $199 MSRP, while the 4655GE arrived much later in November 2022 with no recorded launch price. The 2600's production status is listed as active, as is the 4655GE's.

FAQ

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

A: The AMD Ryzen 5 PRO 4655GE is clearly faster. It wins the Cinebench R15 single-core test by 8% (171 versus 157.3) and the PassMark single-thread test by 15.8% (2660 versus 2239). Its higher 4.20 GHz boost clock and Zen 2 architecture drive this advantage.

Q: Does the Ryzen 5 2600 beat the 4655GE anywhere?

A: Yes, in five comparisons. It wins prime number finding by 32.1%, data encryption by 7.3%, physics simulation by 13.7%, random string sorting by 1%, and Cinebench R15 multi-core by 2.9%. These are largely integer and cache-sensitive tasks.

Q: How do their overall benchmark averages compare?

A: The Ryzen 5 2600 has an average benchmark score of 21484, placing it in the 75th percentile of all CPUs. The Ryzen 5 PRO 4655GE averages 20900, sitting in the 74th percentile. The 2600 is marginally ahead on aggregate average despite losing most head-to-head tests.

Q: Which chip has the larger L3 cache?

A: The Ryzen 5 2600 has 16 MB of shared L3 cache. The Ryzen 5 PRO 4655GE has only 8 MB of shared L3. The 2600 also has more L1 cache per core at 96 KB versus 64 KB.

Q: Do both processors support ECC memory?

A: No. Only the Ryzen 5 PRO 4655GE supports ECC memory. The Ryzen 5 2600 does not list ECC support in the database.

Q: What are the TDP ratings?

A: The Ryzen 5 2600 has a 65 W TDP. The Ryzen 5 PRO 4655GE has a 35 W TDP, making it the more power-efficient design on paper. Both fit the AMD Socket AM4.

Specification Differences

The two processors share the same core and thread counts, socket, memory type, and dual-channel memory bus. Beyond those basics, nearly everything differs.

• Base clock: 3.40 GHz (2600) versus 3.30 GHz (4655GE)
• Boost clock: 3.90 GHz (2600) versus 4.20 GHz (4655GE)
• TDP: 65 W (2600) versus 35 W (4655GE)
• Process node: 12 nm GlobalFoundries (2600) versus 7 nm TSMC (4655GE)
• Transistor count: 4,800 million (2600) versus 9,800 million (4655GE)
• Die size: 213 mm² (2600) versus 156 mm² (4655GE)
• L1 cache per core: 96 KB (2600) versus 64 KB (4655GE)
• L3 cache shared: 16 MB (2600) versus 8 MB (4655GE)
• Memory bandwidth: 46.9 GB/s (2600) versus 51.2 GB/s (4655GE)
• ECC memory: No (2600) versus Yes (4655GE)
• PCIe lanes: Gen 3, 16 lanes (2600) versus Gen 3, 20 lanes (4655GE)
• Integrated graphics: None (2600) versus Radeon Vega 7 (4655GE)
• Unlocked multiplier: Yes (2600) versus No (4655GE)
• Launch MSRP: $199 (2600), no recorded MSRP (4655GE)

The 4655GE is the newer, denser, more feature-rich design. The 2600 offers overclocking freedom and a larger cache pool.

Head-to-Head Benchmarks

The largest single victory belongs to the Ryzen 5 PRO 4655GE in PassMark extended instructions, where it scores 11792 against the 2600's 7168, a 39.2% margin. This test typically measures SIMD and newer instruction set extensions, and the Zen 2 architecture's wider execution resources show clearly here. No other comparison comes close to this gap.

The second largest margin is the 2600's 32.1% win in prime number finding, scoring 37 versus 28. This is a pure integer workload that historically benefits from large caches and high per-core integer throughput. The 2600's 16 MB L3 cache and 3.90 GHz boost appear to give it the edge.

The 4655GE continues its streak in floating point math, winning 27947 to 22942, a 17.9% margin. That aligns with Zen 2's doubled floating-point execution width. It also wins PassMark single-thread by 15.8% (2660 versus 2239), a result consistent with its 4.20 GHz boost clock and architectural improvements.

The 2600 takes physics simulation by 13.7% (673 versus 592). Physics workloads often involve complex integer and branch-heavy code, where the 2600's larger L3 cache and higher base clock may compensate for its older core design. The 2600 also wins data encryption by 7.3% (12429 versus 11586), another integer-heavy task.

The 4655GE wins integer math by 8.2% (48513 versus 44518), which is notable given the 2600's prime number win. The two integer results are not contradictory; prime finding is a specific algorithmic pattern, while integer math covers a broader mix where Zen 2's efficiency prevails. The 4655GE also wins multi-thread PassMark by 7.1% (14171 versus 13160), data compression by 3.1% (193067 versus 187062), and Cinebench R15 single-core by 8% (171 versus 157.3).

The 2600's narrow victories include random string sorting at 1% (21591 versus 21382) and Cinebench R15 multi-core at 2.9% (1248 versus 1213). These are close enough to be within run-to-run variation, but the database records them as wins for the 2600.

The Verdict

The data presents a nuanced picture. The Ryzen 5 PRO 4655GE wins more tests and wins big in the modern workloads that matter most for general computing: single-thread performance, floating point, integer math, and aggregate multi-thread throughput. Its 39.2% extended instructions advantage and 15.8% single-thread lead make it the stronger choice for contemporary software that leverages new instruction sets and higher boost clocks.

The Ryzen 5 2600, however, retains specific niches. Its 32.1% prime number win, 13.7% physics win, and 7.3% encryption win suggest that legacy integer-heavy applications, particularly those sensitive to L3 cache capacity, still favor the older chip. Its 16 MB L3 cache is double the 4655GE's 8 MB, and that difference shows up precisely where the 2600 wins.

For a user prioritizing efficiency, integrated graphics, ECC support, and modern single-thread responsiveness, the 4655GE is the data-backed choice. For a user running encryption, physics simulation, or cache-hungry integer workloads, and who wants an unlocked multiplier for overclocking, the 2600 has measurable advantages. The 2600 also holds a slightly higher average benchmark score, 21484 versus 20900, and a 75th versus 74th percentile ranking, though the 4655GE's nearest rivals include the Intel Core Ultra 7 268V at 0% delta and the Core i5-12600T at -0.1%, while the 2600's closest competitor is the Intel Xeon D-1746TER at -0.7%.

The final call depends on workload priority. The 4655GE is the more broadly capable processor in modern benchmarks. The 2600 is the specialist that still wins where cache and legacy integer paths dominate. Both remain active production parts, but the 4655GE's 35 W TDP and Zen 2 core make it the forward-looking option in most scenarios.