AMD EPYC 7D12 vs AMD Ryzen 5 3500U Comparison

The Verdict

The data presents a stark contrast between two AMD parts aimed at completely different segments. The AMD Ryzen 5 3500U is a mobile processor designed for thin-and-light laptops, while the AMD EPYC 7D12 is a server/workstation chip built for heavy, multi-threaded workloads. Based on the recorded benchmarks, the EPYC 7D12 dominates the Ryzen 5 3500U in both tested metrics. The EPYC 7D12 scores 3,675 points in Cinebench R15 multi-core, compared to the Ryzen 5 3500U's 650 points, a delta of -82.3% from the perspective of the Ryzen part. This means the EPYC is roughly 5.6 times faster in this multi-threaded test. In single-core performance, the EPYC also wins decisively, scoring 518 versus 143, a -72.4% delta, indicating a roughly 3.6 times advantage.

The Ryzen 5 3500U's only conceivable advantage, strictly from the data, is its much lower power envelope. The 3500U has a TDP of 15 watts, whereas the EPYC 7D12 has a TDP of 85 watts. The Ryzen 5 3500U is also the only one of the two with integrated graphics, featuring Radeon Vega 8. For users needing a processor for a portable device with basic graphical output and minimal power draw, the 3500U is the clear choice. For any task that leverages multiple cores, the EPYC 7D12 is the overwhelming winner. The benchmark data shows zero wins for the Ryzen 5 3500U in the head-to-head comparisons, while the EPYC 7D12 wins both.

The percentile ranking for both processors is identical at 66th percentile against all CPUs, which is a curious data point. It suggests that while the EPYC is far more powerful in raw throughput, the Ryzen 5 3500U's efficiency and feature set place it in a similar overall performance tier when considering the entire CPU landscape. However, for any user prioritizing compute performance, the EPYC 7D12 is the only logical choice based on these benchmarks.

Architecture Differences

The architectural divide between these two processors is substantial. The AMD Ryzen 5 3500U is built on the Zen+ architecture, codenamed Picasso, and manufactured on a 12 nm process by GlobalFoundries. In contrast, the AMD EPYC 7D12 uses the Zen 2 architecture, codenamed Rome, and is built on TSMC's 7 nm process. This process node difference is a major factor in their performance and efficiency characteristics. The EPYC's 7 nm process allows for a massive transistor count of 15,200 million, spread across four dies, each with a die size of 74 mm². The Ryzen 5 3500U, on the other hand, has 4,940 million transistors on a single 210 mm² die.

Core and thread counts differ enormously. The Ryzen 5 3500U has 4 cores and 8 threads, while the EPYC 7D12 has 32 cores and 64 threads. This 8x core advantage explains the EPYC's dominance in multi-threaded workloads. Clock speeds tell a different story. The Ryzen 5 3500U has a base clock of 2.10 GHz and a boost clock of 3.70 GHz. The EPYC 7D12's base clock is listed as 1100.00 MHz (which equates to 1.10 GHz), and its boost clock is 3.00 GHz. The Ryzen part has a higher boost clock, but the EPYC's sheer core count overrides this in multi-threaded tests.

Cache hierarchies also differ. The Ryzen 5 3500U has 96 KB of L1 cache per core, 512 KB of L2 cache per core, and 4 MB of shared L3 cache. The EPYC 7D12 has a smaller L1 cache at 64 KB per core, the same 512 KB L2 per core, but a vastly larger L3 cache: 32 MB per die, totaling 128 MB. Memory support is another key difference. Both support DDR4, but the Ryzen 5 3500U uses a dual-channel memory bus, while the EPYC 7D12 uses an eight-channel bus with a memory bandwidth of 204.8 GB/s. The EPYC also supports ECC memory, which the Ryzen 5 3500U does not. The EPYC 7D12 provides PCIe Gen 4 with 128 lanes, while the Ryzen 5 3500U is limited to PCIe Gen 3.

Head-to-Head Benchmarks

The direct comparison data is limited to two Cinebench R15 tests, but the results are conclusive. In the multi-core test, the AMD EPYC 7D12 scores 3,675, which is a massive 82.3% higher than the AMD Ryzen 5 3500U's score of 650. This is not a marginal victory; it is a generational and segment-defining gap. The EPYC's 32 cores and 64 threads simply overwhelm the 4-core, 8-thread Ryzen part.

In the single-core test, the EPYC 7D12 also wins, scoring 518 against the Ryzen 5 3500U's 143. The delta here is -72.4%, meaning the EPYC is 72.4% faster than the Ryzen part in this specific metric. This is more surprising, as the Ryzen 5 3500U has a higher boost clock (3.70 GHz vs 3.00 GHz). The EPYC's advantage likely stems from the superior Zen 2 architecture and its higher base clock when considering the listed figures. The Ryzen 5 3500U's boost clock may be limited by its 15-watt TDP in sustained workloads, whereas the EPYC's 85-watt TDP allows for more sustained performance.

The head-to-head table shows the EPYC 7D12 as the winner in both tests, with winsB equal to 2 and winsA equal to 0. There is no benchmark in the database where the Ryzen 5 3500U comes out ahead. When looking at the broader benchmark suite, the Ryzen 5 3500U has a higher average benchmark score of 11,176 compared to the EPYC's 10,547, but this is skewed by the different benchmark sets recorded for each processor. The Ryzen 5 3500U has 15 recorded benchmarks, including PassMark tests, while the EPYC 7D12 only has 6 recorded Cinebench tests. The EPYC's scores in the Cinebench R20 and R23 tests (15,315 and 36,465 multi-core, respectively) are far higher than anything the Ryzen 5 3500U could produce, but they are not part of the direct head-to-head comparison.

FAQ

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

A: The AMD EPYC 7D12 is significantly faster. In the Cinebench R15 multi-core test, it scores 3,675 compared to the Ryzen 5 3500U's 650, representing an 82.3% higher score.

Q: Does the Ryzen 5 3500U have any performance advantages?

A: Based on the head-to-head benchmark data, no. The EPYC 7D12 wins both the multi-core and single-core Cinebench R15 tests. The Ryzen 5 3500U has a higher boost clock of 3.70 GHz compared to 3.00 GHz, but this does not translate into a benchmark win.

Q: What are the key architectural differences?

A: The Ryzen 5 3500U uses the older Zen+ architecture on a 12 nm process, while the EPYC 7D12 uses Zen 2 on a 7 nm process. The EPYC has 32 cores and 64 threads versus 4 cores and 8 threads for the Ryzen. The EPYC also has a much larger L3 cache (128 MB total) and supports eight-channel memory with ECC.

Q: Which processor is more suitable for a laptop?

A: The AMD Ryzen 5 3500U is the only viable option for a laptop. It has a 15-watt TDP, is designed for the mobile segment, and includes integrated Radeon Vega 8 graphics. The EPYC 7D12 is a server/workstation part with an 85-watt TDP and no integrated graphics.

Q: How do their memory systems differ?

A: The Ryzen 5 3500U supports dual-channel DDR4 memory, while the EPYC 7D12 supports eight-channel DDR4 memory with a bandwidth of 204.8 GB/s. The EPYC also supports ECC memory, which the Ryzen 5 3500U does not.

Q: What is the performance percentile for both processors?

A: Both the AMD Ryzen 5 3500U and the AMD EPYC 7D12 are listed at the 66th percentile against all CPUs in the database.

Where Each One Wins

The AMD Ryzen 5 3500U wins in scenarios that prioritize power efficiency and portability. Its 15-watt TDP makes it suitable for thin-and-light laptops where battery life and heat dissipation are critical. The inclusion of Radeon Vega 8 integrated graphics means no discrete GPU is required for basic display output, which is essential for a mobile form factor. The Ryzen 5 3500U is also the only option for systems using the AMD Socket FP5. Its higher boost clock of 3.70 GHz suggests it can handle short bursts of single-threaded activity, though the benchmark data shows it loses to the EPYC even in the single-core test.

The AMD EPYC 7D12 wins in every measured performance category. Its 32 cores, 64 threads, and 128 MB of L3 cache make it a monster for server virtualization, database processing, and heavy computational tasks. The eight-channel memory bus with 204.8 GB/s bandwidth ensures data can be fed to the cores quickly, and ECC memory support is crucial for data integrity in server environments. The EPYC's PCIe Gen 4 support with 128 lanes provides massive I/O capabilities, far exceeding the Ryzen 5 3500U's PCIe Gen 3. The EPYC 7D12 is the clear choice for any workload that scales with core count, such as compiling large codebases, running multiple virtual machines, or rendering complex scenes.

In summary, the Ryzen 5 3500U wins on efficiency and platform suitability for mobile devices. The EPYC 7D12 wins on raw compute power, memory bandwidth, and server-specific features. The data shows no overlap in their intended use cases.

Specification Differences

The following table highlights the key specification differences between the AMD Ryzen 5 3500U and the AMD EPYC 7D12.

| Specification | AMD Ryzen 5 3500U | AMD EPYC 7D12 |

| :--- | :--- | :--- |

| Cores | 4 | 32 |

| Threads | 8 | 64 |

| Base Clock | 2.10 GHz | 1100.00 MHz |

| Boost Clock | 3.70 GHz | 3.00 GHz |

| TDP | 15 W | 85 W |

| Socket | AMD Socket FP5 | AMD Socket SP3 |

| Architecture | Zen+ | Zen 2 |

| Process Node | 12 nm | 7 nm |

| Foundry | GlobalFoundries | TSMC |

| Transistors | 4,940 million | 15,200 million |

| Die Size | 210 mm² | 4x 74 mm² |

| L1 Cache | 96 KB (per core) | 64 KB (per core) |

| L3 Cache | 4 MB (shared) | 32 MB (per die), 128 MB total |

| Memory Bus | Dual-channel | Eight-channel |

| Memory Bandwidth | Not specified | 204.8 GB/s |

| ECC Memory | No | Yes |

| PCIe | Gen 3 | Gen 4, 128 Lanes (CPU only) |

| Integrated Graphics | Radeon Vega 8 | None |

| Market Segment | Mobile | Server/Workstation |

| Release Date | 2019-01-05 | 2020-04-13 |