AMD Ryzen 7 5800U vs Intel Core i7-5960X Comparison

Where Each One Wins

The benchmark data splits these two processors along generational and architectural lines. The AMD Ryzen 7 5800U wins four of the six head-to-head tests, while the Intel Core i7-5960X wins two. The distribution of those wins tells the real story.

The Ryzen 7 5800U dominates in Geekbench, taking both the single-core and multi-core tests. Its single-core Geekbench score of 1656 against the Intel's 1010 is a 39% margin, the largest gap in either direction across the entire comparison. The multi-core Geekbench result also favors AMD, 7132 to 6461, a 9.4% advantage. These are broad, synthetic workloads that blend integer, floating point, and memory patterns, so the AMD chip's consistent edge there suggests a more balanced overall architecture.

The Intel Core i7-5960X, however, shows its strength in Cinebench R23. It wins multi-core by a massive 41.8% (11565 versus 8154) and single-core by 14.4% (1632 versus 1427). This is a curious split. The older Intel part loses badly in Cinebench R15, both multi-core (1165 versus 1613, a 27.8% deficit) and single-core (164 versus 229, a 28.4% deficit), yet it flips the script entirely in R23.

What does this imply? The Cinebench R23 result may reflect the Intel chip's ability to sustain higher power draw over a longer render, while the R15 and Geekbench results indicate the AMD part's superior efficiency per clock. The Ryzen's 15 W TDP versus the Intel's 140 W TDP is a stark contrast, yet the AMD chip still manages to win half of the tests outright. The data suggests the Ryzen 7 5800U is the better all-rounder for typical workloads, while the i7-5960X retains an edge in specific, heavily threaded render scenarios that can exploit its desktop-class power envelope.

Architecture Differences

The two processors come from different eras and design philosophies. The Intel Core i7-5960X is built on the Haswell architecture, specifically Haswell-E, using Intel's 22 nm process with 2,600 million transistors on a 356 mm² die. It was released in 2014 as part of the Core i7 Extreme lineup, targeting desktop enthusiasts with an unlocked multiplier. The AMD Ryzen 7 5800U uses the Zen 3 architecture, codenamed Cezanne-U, fabricated by TSMC on a 7 nm process with 10,700 million transistors packed into a 180 mm² die. It launched in 2021 and targets mobile devices.

Both chips have 8 cores and 16 threads, so the thread count parity is clear. The cache hierarchies differ meaningfully. The Intel part offers 20 MB of shared L3 cache, while the AMD part has 16 MB of shared L3. Per-core L2 cache also differs: 256 KB per core on Intel versus 512 KB per core on AMD. Both share the same 64 KB per-core L1 cache. The larger L2 on the Ryzen could help with workloads that exhibit locality, while the larger L3 on the Intel part may benefit larger working sets.

Memory support shows another divide. The i7-5960X uses quad-channel DDR4 with a theoretical memory bandwidth of 68.3 GB/s. The Ryzen 7 5800U uses dual-channel DDR4 with 51.2 GB/s. The Intel part's memory bandwidth advantage is substantial on paper, yet the benchmark results do not consistently reflect that. The Ryzen compensates with lower latency and higher clocks. The Intel chip also offers 40 PCIe Gen 3 lanes from the CPU, while the AMD mobile part provides only 8 Gen 3 lanes, reflecting their different market segments: desktop versus mobile.

The Ryzen 7 5800U includes integrated Radeon Vega 8 graphics, while the i7-5960X has no integrated graphics at all. This is a fundamental feature split. The Intel part requires a discrete GPU, which is expected for a desktop extreme processor, but it means a full system build is necessary. The AMD part can function as a complete mobile platform on its own.

The process node gap is also significant. The 22 nm Intel chip draws 140 W TDP, while the 7 nm AMD chip draws only 15 W. That is a 125 W difference in thermal design power. The transistor density improvements from 22 nm to 7 nm allow AMD to pack over four times as many transistors into roughly half the die area. The production status reflects this: Intel is end-of-life, AMD is active.

Head-to-Head Benchmarks

The six head-to-head results paint a complex picture. In Cinebench R15 multi-core, the Ryzen 7 5800U scores 1613 against the i7-5960X's 1165, a 27.8% win for AMD. The single-core R15 test shows a similar pattern: 229 for AMD versus 164 for Intel, a 28.4% margin. These are early-generation Cinebench tests that may not scale as aggressively with core count or sustained power.

Cinebench R23 reverses the trend dramatically. The Intel part scores 11565 in multi-core versus 8154 for AMD, a 41.8% victory. Single-core R23 also goes to Intel: 1632 versus 1427, a 14.4% lead. The R23 multi-core gap is the single largest delta in the entire head-to-head set, and it is worth investigating why an older, slower-clocked chip wins so decisively in this particular test.

The Geekbench results favor AMD once more. Multi-core: 7132 for AMD versus 6461 for Intel, a 9.4% margin. Single-core: 1656 versus 1010, a 39% blowout. The Geekbench single-core result is notable because it shows the Ryzen's 4.40 GHz boost clock delivering nearly 64% higher performance than the Intel's 3.50 GHz boost in a single-threaded workload.

The Intel chip's base clock is 3.00 GHz with a 3.50 GHz boost, while the AMD chip has a 1.90 GHz base and a 4.40 GHz boost. The boost clock difference of 0.90 GHz helps explain the single-core wins for AMD in R15 and Geekbench, but it does not explain Intel's R23 single-core win. The data suggests that R23 may be more sensitive to sustained clock behavior or memory bandwidth, where the Intel part's quad-channel setup could provide an advantage.

The average benchmark score puts the Intel part at 3442 and the AMD part at 3369, a difference of only 73 points. Both sit at the 54th percentile of all CPUs in the database. The nearest rivals for the Intel part include the AMD Ryzen 3 PRO 5350G at 3441 (0% delta) and the AMD Ryzen 5 4600HS at 3444 (0% delta). The AMD part's nearest rivals include the Intel Xeon D-1587 at 3350 (0.6% delta) and the Intel Core i7-7800X at 3333 (1.1% delta). These rival deltas show both chips are tightly clustered with mid-range processors from both camps.

FAQ

Q: Which processor has more cores and threads?

A: Both have exactly 8 cores and 16 threads. There is no difference in core or thread count.

Q: Why does the Intel chip win Cinebench R23 multi-core if the AMD chip wins most other tests?

A: The Intel Core i7-5960X scores 11565 in R23 multi-core versus 8154 for the AMD Ryzen 7 5800U, a 41.8% margin. This may reflect the Intel part's quad-channel memory bandwidth of 68.3 GB/s and its 140 W TDP allowing sustained power delivery, whereas the AMD part is constrained to 15 W.

Q: Which chip has the higher boost clock?

A: The AMD Ryzen 7 5800U has a boost clock of 4.40 GHz, while the Intel Core i7-5960X boosts to 3.50 GHz. The AMD part also has a lower base clock at 1.90 GHz versus 3.00 GHz.

Q: Does the Intel chip include integrated graphics?

A: No. The Intel Core i7-5960X has no integrated graphics. The AMD Ryzen 7 5800U includes Radeon Vega 8 graphics.

Q: What is the memory bandwidth difference?

A: The Intel chip supports quad-channel memory with 68.3 GB/s bandwidth, while the AMD chip uses dual-channel memory with 51.2 GB/s. Despite this, the AMD chip wins Geekbench multi-core by 9.4%.

Q: Are both processors currently in production?

A: No. The Intel Core i7-5960X is end-of-life, having launched in 2014. The AMD Ryzen 7 5800U is active and launched in 2021.

The Verdict

The data supports clear but different use cases for each processor. The AMD Ryzen 7 5800U is the better choice for general-purpose computing, single-threaded workloads, and any scenario where power efficiency matters. It wins four of six head-to-head tests, including both Geekbench tests and both Cinebench R15 tests. Its 39% lead in Geekbench single-core and 27.8% lead in R15 multi-core demonstrate a fundamentally more efficient architecture. The 15 W TDP makes it suitable for thin-and-light mobile devices, and the integrated Radeon Vega 8 graphics remove the need for a discrete GPU.

The Intel Core i7-5960X is the better choice for specific heavily threaded render workloads, as evidenced by its 41.8% win in Cinebench R23 multi-core. It also wins R23 single-core by 14.4%, which is surprising given its lower boost clock. The quad-channel memory bus and 20 MB of L3 cache likely contribute to these results. However, the 140 W TDP and lack of integrated graphics mean it requires a full desktop platform with a discrete GPU, making it less practical for everyday use.

The average benchmark scores are nearly identical (3442 for Intel, 3369 for AMD), and both chips sit at the same 54th percentile. The nearest rivals for each chip include processors with average scores within 1.1% of their own, indicating both are mid-pack performers in the overall database. The choice comes down to workload: the AMD part for efficiency and balanced performance, the Intel part for specific render tasks that favor its memory subsystem and power headroom.

The Ryzen 7 5800U is the more future-proof option given its active production status and 7 nm process, but the i7-5960X still holds a niche for users running Cinebench R23-style workloads who can tolerate a high-power desktop build.

Specification Differences

| Field | Intel Core i7-5960X | AMD Ryzen 7 5800U |

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

| Base Clock | 3.00 GHz | 1.90 GHz |

| Boost Clock | 3.50 GHz | 4.40 GHz |

| TDP | 140 W | 15 W |

| Socket | Intel Socket 2011-3 | AMD Socket FP6 |

| Architecture | Haswell | Zen 3 |

| Codename | Haswell-E | Cezanne-U |

| Process Node | 22 nm | 7 nm |

| Foundry | Intel | TSMC |

| Transistors | 2,600 million | 10,700 million |

| Die Size | 356 mm² | 180 mm² |

| L2 Cache | 256 KB (per core) | 512 KB (per core) |

| L3 Cache | 20 MB (shared) | 16 MB (shared) |

| Memory Bus | Quad-channel | Dual-channel |

| Memory Bandwidth | 68.3 GB/s | 51.2 GB/s |

| PCIe | Gen 3, 40 Lanes (CPU only) | Gen 3, 8 Lanes (CPU only) |

| Integrated Graphics | None | Radeon Vega 8 |

| Market Segment | Desktop | Mobile |

| Production Status | End-of-life | Active |

| Multiplier Unlocked | Yes | No |

| Part Number | SR20Q | 100-000000285 |