AMD Ryzen 5 PRO 7645 vs Intel Core i5-13500 Comparison

The Intel Core i5-13500 and AMD Ryzen 5 PRO 7645 land remarkably close in overall database standing, with the Ryzen sitting in the 83rd percentile against all recorded CPUs and the Intel chip in the 82nd, yet they get there by completely different routes. The i5-13500 relies on a wide 14-core, 20-thread design, while the Ryzen 5 PRO 7645 pairs a compact 6-core, 12-thread layout with aggressive clocks and a newer process node. The head-to-head data shows Intel winning 13 of 17 shared benchmarks, but AMD's four wins include some of the largest single-test margins in the entire comparison.

Head-to-Head Benchmarks

The Intel Core i5-13500 dominates the Passmark suite. Its biggest statement is floating point math: 80198 versus 45202, a 77.4 percent lead for the Intel chip. Integer math goes the same way, 108320 against 74782, a 44.8 percent gap. Data compression (391249 vs 286298, Intel by 36.7 percent), data encryption (22333 vs 16657, Intel by 34.1 percent), and random string sorting (42759 vs 34557, Intel by 23.7 percent) all favor the i5-13500 decisively. The overall Passmark multithread score lands at 31285 for Intel against 25489 for AMD, a 22.7 percent Intel win, and Passmark single-thread also goes Intel's way, 3865 to 3652, a 5.8 percent edge.

Cinebench tells a more complicated story. In R15 multicore, Intel wins 2405 to 2188, a 9.9 percent margin, and in R20 the i5-13500 takes both categories: 10990 vs 9118 (20.5 percent) in multicore and 1551 vs 1287 (20.5 percent) in single-core. Then the picture flips hard in Cinebench R23. The Ryzen 5 PRO 7645 scores 21710 in R23 multicore against Intel's 14573, a 32.9 percent AMD victory, and its R23 single-core score of 3065 beats Intel's 1780 by 41.9 percent. That R23 single-core result is the largest gap in either direction across the whole dataset, and it reflects the Zen 4 chip's 5.10 GHz boost clock against the i5-13500's 4.80 GHz.

AMD's other standout is passmark_find_prime_numbers, where the 7645 posts 198 against Intel's 102, a 48.5 percent AMD win, and it also takes Cinebench R15 single-core, 308 to 256, a 16.9 percent margin. Passmark physics is the closest contest of all: Intel edges it 1645 to 1598, just 2.9 percent.

Where Each One Wins

The split is clean. The i5-13500 is the multi-core and memory-throughput champion here. Fourteen cores and twenty threads translate directly into wins across every integer, floating point, compression, and encryption test, plus overall Passmark multithread leadership. Workloads that scale across many threads at once, such as rendering batches, code compilation, file archiving, and encryption pipelines, are squarely Intel territory in this dataset.

The Ryzen 5 PRO 7645 is the responsiveness and per-thread performer. Its Cinebench R23 single-core win of 41.9 percent and R15 single-core win of 16.9 percent mean applications that lean on one or two fast threads, like many games, office applications, and lightly threaded productivity tools, run better on the Zen 4 part. The find-prime-numbers result, where AMD nearly doubles Intel's score, points to strong per-core computational efficiency in that test. The R23 multicore win (32.9 percent for AMD) also shows that when its six cores are fully fed with modern AVX-heavy rendering workloads, the 7645 punches far above its core count.

Note the odd R20 vs R23 divergence for Intel: the i5-13500 wins R20 by 20.5 percent but loses R23 by 32.9 percent. The database suggests the Ryzen's higher clocks and newer architecture scale better in the newer, heavier benchmark, while Intel's R15 and R20 wins came at lower per-thread output. Buyers should weight R23 more heavily for modern software.

Architecture Differences

These are two fundamentally different design philosophies. The i5-13500 is Intel's Raptor Lake-S on Intel's 10 nm process, a hybrid design with 14 cores and 20 threads, a 215 mm² die, and a 65 W TDP. It runs a 2.50 GHz base and 4.80 GHz boost, fits Socket 1700, and carries 80 KB of L1 and 1.25 MB of L2 per core with 24 MB of shared L3. It supports both DDR4 and DDR5 on a dual-channel bus, includes UHD Graphics 770, and offers 16 PCIe 5.0 lanes from the CPU. ECC memory is supported. The multiplier is locked. Launch MSRP was $242.

The Ryzen 5 PRO 7645 is AMD's Raphael on TSMC's 5 nm node, a homogeneous 6-core, 12-thread Zen 4 design with just 71 mm² of silicon and roughly 6570 million transistors. It clocks much higher, 3.80 GHz base and 5.10 GHz boost, at the same 65 W TDP, and sits on Socket AM5. Cache is structured differently: 64 KB L1 and 1 MB L2 per core, but a larger 32 MB shared L3. Memory support is DDR5 only, dual-channel, with a recorded bandwidth of 83.2 GB/s, and ECC is supported. It provides 24 PCIe 5.0 lanes, more than Intel's 16, uses Radeon integrated graphics, and carries a Server/Workstation market designation rather than Intel's Desktop one. The multiplier is also locked. It launched later, in June of its release year, versus January for the Intel part.

FAQ

Q: Which CPU is faster overall in the database?

A: They are nearly tied. The Ryzen 5 PRO 7645 holds the 83rd percentile with an average benchmark score of 32446, while the i5-13500 sits at the 82nd percentile with an average of 31510. In direct head-to-head tests, however, Intel wins 13 of 17 benchmarks.

Q: Which one is better for single-threaded work?

A: The data is split by test suite. The Ryzen wins Cinebench R23 single-core by 41.9 percent (3065 vs 1780) and R15 single-core by 16.9 percent, while Intel wins Cinebench R20 single-core by 20.5 percent and Passmark single-thread by 5.8 percent. For modern software, the R23 result is the most relevant and favors AMD.

Q: Do both chips support ECC memory?

A: Yes, both the i5-13500 and the Ryzen 5 PRO 7645 support ECC, which suits workstation use.

Q: Which platform has more PCIe lanes?

A: AMD. The 7645 provides 24 PCIe 5.0 lanes from the CPU, while the i5-13500 provides 16 PCIe 5.0 lanes. That matters for a fast GPU plus a PCIe 5.0 SSD simultaneously.

Q: Can either CPU be overclocked?

A: No. Both have locked multipliers, so tuning is limited to memory and platform-level adjustments.

Q: What memory does each support?

A: The i5-13500 accepts both DDR4 and DDR5 on a dual-channel bus, giving platform flexibility. The Ryzen 5 PRO 7645 is DDR5 only, dual-channel, with 83.2 GB/s of recorded bandwidth.

The Verdict

Pick the Intel Core i5-13500 if throughput across many simultaneous threads is the priority. The recorded data shows it winning compression by 36.7 percent, encryption by 34.1 percent, floating point math by 77.4 percent, and overall Passmark multithread by 22.7 percent, all from its 14-core, 20-thread design. Add DDR4 backward compatibility and integrated UHD Graphics 770, and it is the safer all-rounder desktop choice.

Pick the Ryzen 5 PRO 7645 if per-thread speed and platform I/O matter more. Its 41.9 percent Cinebench R23 single-core lead, 32.9 percent R23 multicore win, and 24 PCIe 5.0 lanes make it the stronger choice for lightly threaded applications, modern AVX-heavy rendering, and workstation builds needing more lanes. Its 5 nm node, higher boost clock, and 32 MB of L3 explain where those wins come from. Both chips share a 65 W TDP and ECC support, so power and reliability are not differentiators here.

Specification Differences

| Field | Intel Core i5-13500 | AMD Ryzen 5 PRO 7645 |

|---|---|---|

| Cores / Threads | 14 / 20 | 6 / 12 |

| Base Clock | 2.50 GHz | 3.80 GHz |

| Boost Clock | 4.80 GHz | 5.10 GHz |

| Architecture | Raptor Lake (Raptor Lake-S) | Zen 4 (Raphael) |

| Process Node | 10 nm (Intel) | 5 nm (TSMC) |

| Die Size | 215 mm² | 71 mm² |

| Transistors | Not recorded | 6,570 million |

| L1 Cache | 80 KB per core | 64 KB per core |

| L2 Cache | 1.25 MB per core | 1 MB per core |

| L3 Cache | 24 MB shared | 32 MB shared |

| Memory Support | DDR4, DDR5 | DDR5 |

| Memory Bandwidth | Not recorded | 83.2 GB/s |

| PCIe | Gen 5, 16 lanes (CPU only) | Gen 5, 24 lanes (CPU only) |

| Integrated Graphics | UHD Graphics 770 | Radeon Graphics |

| Socket | Intel Socket 1700 | AMD Socket AM5 |

| Market Segment | Desktop | Server/Workstation |

| Release Date | January 2023 | June 2023 |

| Launch MSRP | $242 | Not recorded |

Everything else, TDP (65 W), dual-channel memory bus, ECC support, locked multiplier, and active production status, is identical between the two.