AMD Ryzen 3 7320C vs AMD Ryzen Threadripper PRO 3975WX Comparison

FAQ

Q: Which processor has more cores and threads?

A: The AMD Ryzen Threadripper PRO 3975WX has 32 cores and 64 threads, while the AMD Ryzen 3 7320C has 4 cores and 8 threads. The Threadripper offers an 8x increase in core count and thread count.

Q: How do the two chips compare in single-core performance?

A: The Threadripper PRO 3975WX leads in every single-core benchmark. In Cinebench R23 single-core, it scores 7467 versus 991 for the Ryzen 3 7320C, a difference of 86.7 percent. The gap is similar in Cinebench R15 and R20 single-core tests.

Q: What is the memory bandwidth difference?

A: The Threadripper PRO 3975WX supports eight-channel DDR4 memory with 204.8 GB/s of bandwidth. The Ryzen 3 7320C uses dual-channel LPDDR5 with 88.0 GB/s. The Threadripper has more than double the memory bandwidth.

Q: Do both processors support ECC memory?

A: No. The Threadripper PRO 3975WX supports ECC memory, but the Ryzen 3 7320C does not. This makes the Threadripper more suitable for workstation reliability workloads.

Q: Which processor has integrated graphics?

A: The Ryzen 3 7320C includes a Radeon 610M integrated GPU. The Threadripper PRO 3975WX has no integrated graphics, so it requires a discrete GPU.

Q: How do their average benchmark scores compare?

A: The Ryzen 3 7320C has an average benchmark score of 14277, while the Threadripper PRO 3975WX scores 13786. The Ryzen 3 is about 3.6 percent higher on average, despite having far fewer cores.

Architecture Differences

Both processors are built on AMD's Zen 2 architecture, but they target completely different segments. The Ryzen 3 7320C uses the Mendocino codename and is fabricated on TSMC's 6 nm process node, with a die size of 100 mm². The Threadripper PRO 3975WX uses the Castle Peak codename on a 7 nm node, with a multi-chip design consisting of four 74 mm² dies and 15,200 million transistors.

The Ryzen 3 7320C is a mobile part in the 7000 series, designed for low-power laptops. Its 15 W TDP and AMD Socket FT6 packaging reflect an efficiency-first approach. The Threadripper PRO 3975WX is a desktop workstation processor in the 3000 series with a 280 W TDP and AMD Socket WRX8. The power envelope difference is enormous, and it directly explains the performance gap in sustained multithreaded workloads.

Cache hierarchies also differ significantly. Both chips share 64 KB of L1 cache and 512 KB of L2 cache per core. The critical difference is L3 cache: the Ryzen 3 7320C has 4 MB shared, while the Threadripper PRO 3975WX has 128 MB. That 32x difference in L3 capacity matters for large datasets, database workloads, and code compilation.

Memory support diverges sharply. The Ryzen 3 7320C uses dual-channel LPDDR5 memory with 88.0 GB/s bandwidth. The Threadripper PRO 3975WX uses eight-channel DDR4 with 204.8 GB/s. The Threadripper also supports ECC memory, a feature absent on the Ryzen 3. PCIe connectivity is equally lopsided: the Ryzen 3 offers Gen 3 with 4 CPU lanes, while the Threadripper PRO offers Gen 4 with 128 CPU lanes. The Threadripper has 32 times the PCIe lanes at a newer generation.

The Ryzen 3 7320C includes a Radeon 610M integrated GPU, making it a complete APU solution. The Threadripper PRO 3975WX has no integrated graphics, requiring a discrete GPU. Both processors have locked multipliers, so neither supports overclocking. The Ryzen 3 was released in May 2023, while the Threadripper PRO launched in July 2020.

Head-to-Head Benchmarks

The benchmark data shows a complete sweep for the Threadripper PRO 3975WX across all six shared Cinebench tests. The smallest relative gap is 86.7 percent, and it is consistent across both single-core and multi-core workloads. This uniformity suggests the Threadripper's advantage comes from higher clocks and far greater core resources.

In Cinebench R23 multi-core, the Threadripper scores 52895 against 7025 for the Ryzen 3 7320C. That is an 86.7 percent difference, which translates to roughly 7.5 times the raw throughput. For rendering, simulation, or video encoding, this is the decisive metric. The R20 multi-core test shows the same pattern: 22215 versus 2950, again an 86.7 percent gap.

Single-core results are also one-sided. The Threadripper PRO 3975WX scores 7467 in Cinebench R23 single-core, while the Ryzen 3 7320C manages 991. The R20 single-core test shows 3136 versus 416. Even in Cinebench R15 single-core, the Threadripper leads 752 to 99. The 86.7 percent delta appears in every test, indicating the Threadripper's higher base clock of 3.50 GHz and boost clock of 4.20 GHz versus 2.40 GHz and 4.10 GHz give it a consistent per-thread advantage.

The Ryzen 3 7320C has no wins in this head-to-head comparison. The Threadripper PRO 3975WX wins all six recorded tests. However, the Ryzen 3 does hold a higher average benchmark score overall, 14277 versus 13786, because it has additional PassMark results including data compression, encryption, and physics tests where its efficiency-oriented design performs well relative to its class.

The percentile rankings are nearly identical: the Ryzen 3 7320C sits at the 69th percentile of all CPUs, while the Threadripper PRO 3975WX is at the 68th. This is surprising given the raw performance gap, but it reflects the fact that the Ryzen 3 competes in a field of mobile and low-power parts, while the Threadripper is measured against other high-end workstation chips.

The Verdict

The data presents a clear choice based on workload. The AMD Ryzen Threadripper PRO 3975WX is the stronger processor for any task that scales with cores, threads, cache, memory bandwidth, or PCIe connectivity. Its 32 cores and 64 threads, 128 MB of L3 cache, eight-channel DDR4, and 128 PCIe Gen 4 lanes make it the appropriate pick for rendering, simulation, virtualization, large-scale compilation, and professional content creation. The 86.7 percent lead in every Cinebench test confirms that multithreaded performance is its defining strength.

The AMD Ryzen 3 7320C is a low-power mobile processor with a 15 W TDP, integrated Radeon 610M graphics, and LPDDR5 memory support. Its 69th percentile ranking and average benchmark score of 14277 show it performs respectably within its segment, but it cannot compete with the Threadripper in raw throughput. Its role is in thin-and-light laptops, fanless designs, or battery-conscious systems where the Threadripper's 280 W TDP and desktop socket are not viable.

ECC memory support also favors the Threadripper for error-sensitive workloads. The Ryzen 3 lacks ECC support entirely. The Threadripper's production status is Active, as is the Ryzen 3's, so both remain available. The Threadripper PRO 3975WX carries a launch MSRP of $2749, but pricing should not be the deciding factor here: the two chips serve different markets entirely.

For a workstation buyer needing maximum compute density, the Threadripper PRO 3975WX is the only rational choice. For a laptop buyer prioritizing portability and low power, the Ryzen 3 7320C is the only one of the two that fits. The benchmark data does not suggest any scenario where the Ryzen 3 outperforms the Threadripper in compute-heavy tasks, but it also does not suggest the Threadripper can replace the Ryzen 3's mobile role.

Specification Differences

| Specification | AMD Ryzen 3 7320C | AMD Ryzen Threadripper PRO 3975WX |

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

| Series | 7000 series | 3000 series |

| Cores | 4 | 32 |

| Threads | 8 | 64 |

| Base Clock | 2.40 GHz | 3.50 GHz |

| Boost Clock | 4.10 GHz | 4.20 GHz |

| TDP | 15 W | 280 W |

| Socket | AMD Socket FT6 | AMD Socket WRX8 |

| Codename | Mendocino | Castle Peak |

| Process Node | 6 nm | 7 nm |

| Die Size | 100 mm² | 4x 74 mm² |

| Transistors | Not listed | 15,200 million |

| L3 Cache | 4 MB (shared) | 128 MB |

| Memory Support | LPDDR5 | DDR4 |

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

| Memory Bandwidth | 88.0 GB/s | 204.8 GB/s |

| ECC Memory | No | Yes |

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

| Integrated Graphics | Radeon 610M | None |

| Market Segment | Mobile | Desktop |

| Release Date | 2023-05-22 | 2020-07-13 |

| Launch MSRP | Not listed | $2749 |

| Multiplier Unlocked | No | No |

| Part Number | 100-000000774 | 100-000000086100-100000086WOF |