AMD Ryzen 9 9900X3D vs Intel Core 5 320 Comparison

Head-to-Head Benchmarks

The recorded benchmark data shows a complete sweep: the AMD Ryzen 9 9900X3D wins all 17 head-to-head comparisons, with the Intel Core 5 320 taking zero wins. The margins range from modest to overwhelming.

The closest contest is single-thread performance. In PassMark's single-thread test, the 9900X3D scores 4646 against 4045 for the Core 5 320, a 14.9% advantage. That is a meaningful gap but far smaller than the multi-core deltas that dominate this comparison.

Multi-threaded workloads expose the biggest chasm. In Cinebench R23 multi-core, the 9900X3D posts 47737 versus 6197, a 670.3% lead. That is the largest delta in the entire dataset. Cinebench R20 multi-core shows a 267.1% advantage (20049 vs 5462), while Cinebench R15 multi-core shows 356.5% (4811 vs 1054). These results indicate that the 9900X3D is in a completely different performance class when all cores are engaged.

Integer math is another dominant area. The PassMark integer math score for the 9900X3D is 179727, against 32323 for the Core 5 320, a 456% difference. Prime number finding shows a 394.5% gap (544 vs 110). Data compression follows at 360.5% (685074 vs 148779). Extended instructions deliver 55426 versus 13262, a 317.9% lead. Random string sorting shows 71864 against 18038, a 298.4% margin.

Floating-point math is less lopsided but still decisive: 119622 vs 42440, a 181.9% advantage. Data encryption shows 33282 versus 10984, a 203% lead. Physics simulation (PassMark) delivers 5340 against 1221, a 337.3% gap. PassMark multithread shows 56154 versus 15450, a 263.5% margin.

Single-core Cinebench results also favor AMD heavily. R23 single-core: 6739 vs 1926, a 249.9% lead. R20 single-core: 2830 vs 771, a 267.1% lead. R15 single-core: 679 vs 276, a 146% advantage. The PassMark single-thread result is the only benchmark where the gap is below 100%, confirming that the Core 5 320 has a competitive single-core design, just not one that can match the 9900X3D.

Where Each One Wins

The data offers no benchmark category where the Intel Core 5 320 comes out ahead. Every recorded test favors the AMD Ryzen 9 9900X3D. That said, the use-case picture is more nuanced than raw scores alone.

The 9900X3D is built for sustained, heavy multi-threaded work. Its Cinebench R23 multi-core score of 47737 and PassMark multithread score of 56154 indicate strong performance in rendering, compilation, simulation, and other parallel workloads. The 670.3% lead in R23 multi-core over the Core 5 320 means that for any all-core task, the AMD part finishes in a fraction of the time.

The Core 5 320, despite losing every benchmark, still holds relevance in its intended segment. Its PassMark single-thread score of 4045 is only 14.9% behind the 9900X3D, which suggests that lightly threaded daily tasks such as web browsing, office applications, and basic media playback would not show a dramatic difference. The 6-core, 6-thread configuration with a 15W TDP points to a low-power mobile part, where battery life and thermal limits matter more than absolute throughput.

For users who need maximum compute density, the 9900X3D is the clear choice. For those prioritizing efficiency and portability, the Core 5 320's performance is acceptable given its power envelope, though the data does not include any efficiency metrics to quantify that trade-off.

Architecture Differences

The two processors come from fundamentally different design points. The AMD Ryzen 9 9900X3D uses the Zen 5 architecture on the Granite Ridge codename, built on a 4 nm process at TSMC. It packs 12 cores and 24 threads, with a base clock of 4.40 GHz and a boost clock of 5.50 GHz. The TDP is 120W. The CPU is mounted on AMD Socket AM5 and includes Radeon Graphics as integrated graphics. It supports DDR5 memory in a dual-channel configuration with a bandwidth of 89.6 GB/s, and it has ECC memory support. PCIe connectivity is Gen 5 with 24 lanes (CPU only). The multiplier is unlocked, allowing overclocking.

The Intel Core 5 320 uses the Wildcat Lake codename with a 3 nm process at Intel's own foundry. It has 6 cores and 6 threads, meaning no hyperthreading. Base clock is 1.50 GHz, boost clock is 4.60 GHz, and TDP is 15W. The socket is Intel BGA 1516, indicating a soldered mobile package. Integrated graphics are Intel Xe3 Graphics with 2 Xe cores. Memory support covers DDR5 and LPDDR5X, but the bus is single-channel with a bandwidth of 59.7 GB/s. ECC is not supported. PCIe is Gen 4 with 6 lanes (CPU only). The multiplier is locked.

Cache layouts differ substantially. The 9900X3D has 80 KB of L1 per core, 1 MB of L2 per core, and 128 MB of L3 cache. The Core 5 320 has 192 KB of L1 total, 2.5 MB of L2 total, and 6 MB of shared L3. The 9900X3D's L3 cache is over 21 times larger, which directly benefits workloads with large working sets. The transistor count for the 9900X3D is listed at 16,630 million across a dual-die design with each die at 70.6 mm². The Core 5 320 has no listed transistor count or die size.

The 9900X3D was released on 2025-01-05 with a launch MSRP of $599. The Core 5 320 has a launch date of 2026-04-15 and a launch MSRP of $340. Both are listed as Active in production status, and both target different market segments: Desktop for AMD, Mobile for Intel.

FAQ

Q: Which processor has more cores and threads?

A: The AMD Ryzen 9 9900X3D has 12 cores and 24 threads. The Intel Core 5 320 has 6 cores and 6 threads.

Q: How large is the L3 cache difference?

A: The 9900X3D has 128 MB of L3 cache, while the Core 5 320 has 6 MB of shared L3. The AMD part's cache is more than 21 times larger.

Q: What is the single-thread performance gap?

A: In PassMark single-thread, the 9900X3D scores 4646 against 4045 for the Core 5 320, a 14.9% lead. In Cinebench R23 single-core, the gap is 249.9% (6739 vs 1926).

Q: Which processor supports ECC memory?

A: The AMD Ryzen 9 9900X3D supports ECC memory. The Intel Core 5 320 does not.

Q: What memory bandwidth does each support?

A: The 9900X3D has dual-channel DDR5 with 89.6 GB/s bandwidth. The Core 5 320 has single-channel DDR5/LPDDR5X with 59.7 GB/s bandwidth.

Q: Are both processors overclockable?

A: No. The 9900X3D has an unlocked multiplier, while the Core 5 320 has a locked multiplier.

The Verdict

The benchmark data is unambiguous. The AMD Ryzen 9 9900X3D outperforms the Intel Core 5 320 in every recorded test, with particularly large margins in multi-threaded workloads. The 9900X3D's Cinebench R23 multi-core score of 47737 versus 6197 represents a 670.3% advantage, which translates to roughly eight times the throughput in that specific render workload. For integer math, compression, encryption, and physics, the AMD part is between 203% and 456% ahead.

The Intel Core 5 320 is not a competitive alternative for anyone seeking maximum performance. Its nearest rivals in the database include the AMD Ryzen 5 1600 (0.2% delta), Intel Core 5 120U (0.7% delta), and AMD Ryzen 5 3600XT (0.7% delta), placing it in the 72nd percentile of all CPUs. The 9900X3D, by contrast, sits in the 91st percentile with rivals like the Intel Core Ultra 5 245KF (-0.6% delta) and Intel Core i7-14700F (2.1% delta).

The data suggests the Core 5 320 is designed for a low-power mobile context, with a 15W TDP and single-channel memory. Its single-thread score of 4045 shows it can handle everyday tasks adequately, but any serious multi-threaded or GPU-bound workload will heavily favor the 9900X3D. The 9900X3D also offers broader platform features: ECC memory, 24 PCIe Gen 5 lanes, dual-channel bandwidth, and an unlocked multiplier.

For a desktop builder prioritizing compute performance, the 9900X3D is the only rational pick from this comparison. For a mobile user who values battery life over raw speed, the Core 5 320 fills a different niche, but the recorded benchmarks provide no scenario where it wins.

Specification Differences

| Field | AMD Ryzen 9 9900X3D | Intel Core 5 320 |

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

| Cores | 12 | 6 |

| Threads | 24 | 6 |

| Base Clock | 4.40 GHz | 1.50 GHz |

| Boost Clock | 5.50 GHz | 4.60 GHz |

| TDP | 120W | 15W |

| Socket | AMD Socket AM5 | Intel BGA 1516 |

| Process Node | 4 nm (TSMC) | 3 nm (Intel) |

| L1 Cache | 80 KB (per core) | 192 KB (total) |

| L2 Cache | 1 MB (per core) | 2.5 MB (total) |

| L3 Cache | 128 MB | 6 MB (shared) |

| Memory Support | DDR5 | DDR5, LPDDR5X |

| Memory Bus | Dual-channel | Single-channel |

| Memory Bandwidth | 89.6 GB/s | 59.7 GB/s |

| ECC Memory | Yes | No |

| PCIe | Gen 5, 24 Lanes (CPU only) | Gen 4, 6 Lanes (CPU only) |

| Integrated Graphics | Radeon Graphics | Intel Xe3 Graphics (2 Xe) |

| Market Segment | Desktop | Mobile |

| Release Date | 2025-01-05 | 2026-04-15 |

| Launch MSRP | $599 | $340 |

| Multiplier Unlocked | Yes | No |

| Transistors | 16,630 million | Not listed |

| Die Size | 2x 70.6 mm² | Not listed |