AMD Ryzen 7 3800X vs Intel Core i5-12600 Comparison

Head-to-Head Benchmarks

The recorded data shows a clear split across the benchmark suite, with the AMD Ryzen 7 3800X taking 13 wins and the Intel Core i5-12600 taking 4 wins. The most dominant category for AMD is data encryption, where the 3800X scores 19,337 against Intel's 13,084, a 47.8% advantage. This is the single largest margin in the entire head-to-head comparison. Random string sorting follows closely, with AMD at 32,869 versus Intel's 25,832, a 27.2% lead. In both cases, the Ryzen's edge appears to stem from its higher thread count and larger cache structure, which benefit sustained workloads.

In Cinebench, the AMD processor wins every iteration, but the margin is consistent rather than overwhelming. Across Cinebench R15, R20, and R23, both single-core and multi-core tests show exactly an 8.2% delta in AMD's favor. For example, Cinebench R23 multi-core shows 19,588 for AMD against 18,105 for Intel, while single-core shows 2,765 versus 2,556. This uniformity suggests a stable architectural advantage rather than a workload-specific quirk. The 3800X also leads in PassMark multi-thread scoring, 23,046 versus 21,399, a 7.7% gap, and in integer math, 67,725 versus 66,123, a slim 2.4% margin.

The Intel Core i5-12600 counters in four specific areas. The most striking is PassMark single-thread, where Intel scores 3,823 against AMD's 2,712, a 29.1% advantage. This is the largest margin in either direction. Intel also wins floating-point math decisively, 50,838 versus 39,759, a 21.8% lead. In physics simulation, Intel takes 1,365 against 1,226, a 10.2% edge. These results indicate that in workloads relying on high-frequency single-core execution and vectorized floating-point operations, the Alder Lake architecture holds a significant edge. The data compression test goes to AMD with 304,853 versus 252,160, a 20.9% margin, while extended instructions favor AMD by 17.7% (20,037 versus 17,027). Prime number finding shows AMD at 103 versus 83, a 24.1% lead.

Where Each One Wins

The AMD Ryzen 7 3800X dominates in multi-threaded productivity and data-heavy tasks. The Cinebench sweep, across all three versions, points to rendering and CPU-bound creative workloads as a clear AMD stronghold. The PassMark data compression result (304,853 versus 252,160) suggests the 3800X is better suited for file archiving, database operations, and similar throughput-oriented tasks. The encryption advantage (47.8% delta) is particularly pronounced, making the 3800X the stronger choice for security-focused workloads, such as VPN termination, full-disk encryption, or cryptographic hashing. Random string sorting, with a 27.2% lead, reinforces this pattern: the 3800X handles sorting algorithms and memory-access-heavy patterns more efficiently.

The Intel Core i5-12600 wins in scenarios that favor high clock speeds and efficient floating-point execution. The single-thread score of 3,823 versus 2,712 is a massive gap, indicating that lightly threaded applications, such as legacy games, spreadsheet calculations, or single-threaded scripting, will run noticeably faster on the Intel part. The floating-point math result (50,838 versus 39,759) shows Intel's advantage in scientific simulations, 3D physics calculations, and any code that heavily uses SIMD instructions. The physics test win (1,365 versus 1,226) is consistent with this, as physics engines often rely on floating-point vectors. For users whose primary workloads are single-threaded or FP-heavy, the i5-12600 is the better performer.

For mixed workloads, the data leans AMD. The multi-thread score differential (7.7%) and the integer math edge (2.4%) are modest but consistent. The extended instructions test, which measures AVX and similar instruction set efficiency, goes to AMD by 17.7%, suggesting that even some vectorized workloads prefer the Ryzen. The overall average benchmark score for the 3800X is 29,447, placing it in the 81st percentile of all CPUs. The i5-12600 averages 28,646, in the 80th percentile. The difference is small, but the 3800X edges ahead in aggregate.

Architecture Differences

The two processors come from different design philosophies. The AMD Ryzen 7 3800X uses a Zen 2 architecture, built on a 7 nm process at TSMC, with a die size of 74 mm² and 3,800 million transistors. It has 8 cores and 16 threads, with a base clock of 3.90 GHz and a boost clock of 4.50 GHz. The cache hierarchy includes 64 KB of L1 per core, 512 KB of L2 per core, and 32 MB of shared L3. Memory support is DDR4 only, dual-channel, with a measured bandwidth of 51.2 GB/s. The CPU supports PCIe Gen 4 with 24 lanes. It is unlocked for overclocking and has a TDP of 105 watts. The socket is AMD Socket AM4, and it uses the Matisse codename.

The Intel Core i5-12600 uses Alder Lake-S, built on a 10 nm process at Intel, with a die size of 163 mm². It has 6 cores and 12 threads, but the base clock is lower at 3.30 GHz, while the boost clock is higher at 4.80 GHz. The cache is larger per core: 80 KB of L1 and 1.25 MB of L2, but the shared L3 is smaller at 18 MB. Memory support includes both DDR4 and DDR5, dual-channel, though the database does not record a bandwidth figure for Intel. PCIe support is Gen 5 with 16 lanes. The i5-12600 includes integrated graphics (UHD Graphics 770), which the 3800X lacks. It is not multiplier-unlocked, has a TDP of 65 watts, and uses Intel Socket 1700.

The most consequential differences are the core count and the process node. The 3800X has 2 more cores and 4 more threads, which explains its multi-thread wins. The i5-12600 compensates with a higher boost clock (4.80 GHz versus 4.50 GHz) and a smaller, more efficient cache layout per core. The L3 difference (32 MB versus 18 MB) likely contributes to the 3800X's superior performance in data-heavy tests like compression and encryption. The process node difference (7 nm versus 10 nm) also affects power efficiency, though the recorded TDP figures (105 watts for AMD, 65 watts for Intel) reflect the higher core count on AMD's side. The integrated GPU in the i5-12600 is a notable feature for systems without a discrete graphics card.

The Verdict

The data points to a simple conclusion: pick the AMD Ryzen 7 3800X if your workloads are multi-threaded, data-centric, or security-oriented. The 47.8% encryption lead, the 20.9% compression lead, and the 8.2% Cinebench sweep make it the superior processor for rendering, file compression, database work, and cryptographic tasks. The 3800X also offers more PCIe Gen 4 lanes (24 versus 16) and an unlocked multiplier, which matters for overclocking enthusiasts. Its 81st percentile ranking and higher average score (29,447 versus 28,646) confirm a slight overall edge.

Pick the Intel Core i5-12600 if your primary workloads are single-threaded or floating-point heavy. The 29.1% single-thread advantage is decisive for everyday responsiveness, older applications, and many games that rely on one or two fast cores. The 21.8% floating-point math lead and the 10.2% physics win make it the better choice for scientific computing, physics simulations, and some financial modeling. The integrated GPU is a practical bonus for office or home builds without a discrete card. The lower TDP (65 watts versus 105 watts) also makes it easier to cool and more power-efficient in light loads.

For a balanced system, the 3800X wins more benchmarks overall (13 versus 4), but the margins in its favor are often smaller than Intel's single-thread and FP wins. The i5-12600's single-thread score of 3,823 is a standout figure, nearly 41% higher than its own multi-thread score normalized per thread. Neither processor is a clear overall victor; the choice depends on whether you value parallel throughput or raw single-core speed.

FAQ

Q: Which processor is faster in Cinebench R23 multi-core?

A: The AMD Ryzen 7 3800X scores 19,588 compared to the Intel Core i5-12600's 18,105, a 8.2% advantage for AMD.

Q: What is the largest performance gap in either direction?

A: The Intel Core i5-12600 leads by 29.1% in PassMark single-thread performance (3,823 versus 2,712), while the AMD Ryzen 7 3800X leads by 47.8% in data encryption (19,337 versus 13,084).

Q: Does the Intel part have integrated graphics?

A: Yes, the Intel Core i5-12600 includes UHD Graphics 770, while the AMD Ryzen 7 3800X has no integrated graphics.

Q: How do the core and thread counts differ?

A: The AMD Ryzen 7 3800X has 8 cores and 16 threads, while the Intel Core i5-12600 has 6 cores and 12 threads.

Q: Which processor has a higher boost clock?

A: The Intel Core i5-12600 boosts to 4.80 GHz, while the AMD Ryzen 7 3800X boosts to 4.50 GHz.

Q: What is the average benchmark score for each?

A: The AMD Ryzen 7 3800X averages 29,447, and the Intel Core i5-12600 averages 28,646.

Specification Differences

| Field | AMD Ryzen 7 3800X | Intel Core i5-12600 |

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

| Cores | 8 | 6 |

| Threads | 16 | 12 |

| Base Clock | 3.90 GHz | 3.30 GHz |

| Boost Clock | 4.50 GHz | 4.80 GHz |

| TDP | 105 W | 65 W |

| Socket | AMD Socket AM4 | Intel Socket 1700 |

| Architecture | Zen 2 | Alder Lake |

| Process Node | 7 nm | 10 nm |

| Die Size | 74 mm² | 163 mm² |

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

| L2 Cache | 512 KB (per core) | 1.25 MB (per core) |

| L3 Cache | 32 MB | 18 MB (shared) |

| Memory Support | DDR4 | DDR4, DDR5 |

| Memory Bandwidth | 51.2 GB/s | Not recorded |

| PCIe | Gen 4, 24 Lanes | Gen 5, 16 Lanes |

| Integrated Graphics | None | UHD Graphics 770 |

| Unlocked Multiplier | Yes | No |

| Transistors | 3,800 million | Not recorded |