AMD Ryzen 3 PRO 4450U

AMD Ryzen 3 PRO 4450U is a 4-core, 8-thread mobile processor built on TSMC’s 7 nm process, part of the Zen 2 Renoir generation. It targets thin-and-light laptops with a 15 W TDP, DDR4 dual-channel memory support, PCIe Gen 3, and integrated Radeon Graphics with 320 SPs. Its benchmark profile places it near the 50th percentile of all CPUs, with an average score of 2444 across the tested workloads.

Platform and Compatibility

The Ryzen 3 PRO 4450U uses the AMD Socket FP6, a BGA package designed for mobile systems. This means the processor is soldered to the motherboard, so there is no user-upgrade path in the traditional sense; the socket dictates that the CPU is tied to the laptop or mini-PC board it ships with. For a builder or buyer, the practical implication is that platform longevity is determined by the entire system, not just the CPU.

Memory support is DDR4 running on a dual-channel bus, with a theoretical bandwidth of 68.3 GB/s. ECC memory is not supported, which is typical for this mobile segment. The dual-channel configuration is important for the integrated GPU, as Radeon Graphics 320SP relies on system memory for its frame buffer; a single-channel setup would halve available bandwidth and noticeably affect graphics performance.

PCIe support is limited to Gen 3. This is sufficient for NVMe SSDs and discrete GPUs of that era, but it does not offer the Gen 4 or Gen 5 lanes found on newer desktop platforms. For a mobile part from 2020, this is adequate, but it caps the theoretical speed of high-end storage devices. The integrated graphics is the only GPU option unless the laptop vendor includes a discrete chip, which would run over the Gen 3 lanes.

The production status is listed as Active, meaning the part remains in the current catalog. The release date is 2020-05-06. No launch MSRP is provided, so pricing information is not available for this analysis.

How It Compares

The nearest rivals by average benchmark score are four Intel parts, and the deltas are tight. The Ryzen 3 PRO 4450U scores 2444, which is nearly identical to the Intel Xeon E5-2628L v3 (2446, delta -0.1%). That Xeon is a server-class chip with more cores, but its lower clock speeds bring it to parity in these synthetic workloads; the data shows the Renoir mobile part matching a much larger enterprise processor in overall throughput.

Against the Intel Core i5-8600 (2447, delta -0.1%), the Ryzen is again within a single point. The i5-8600 is a desktop 6-core part from an older generation, so the fact that a 15 W mobile chip matches it suggests significant architectural efficiency from Zen 2. The delta is negligible in real-world terms, but the power envelope difference is stark.

The Intel Core i5-8500B (2436, delta 0.3%) is the only rival where the Ryzen leads, by 8 points. This is a 6-core mobile variant, and the Ryzen’s 0.3% advantage is within noise, but it does indicate that the 4450U can hold its own against higher-core-count Intel parts in the aggregate benchmark suite.

The Intel Core i7-1365UE (2463, delta -0.8%) is the newest rival, a 13th-gen mobile chip. The Ryzen trails by 19 points, which is a 0.8% deficit. Given the generational gap, this is a strong showing for the Renoir part; the i7-1365UE is a more modern design, yet the performance difference is minimal in average terms.

Power and Thermals

The TDP is 15 W, which places this processor in the ultra-low-power mobile class. This is the classic tier for thin-and-light ultrabooks, fanless designs, or compact laptops where sustained performance is secondary to battery life and thermal silence. A 15 W TDP does not require a large cooler; a low-profile heat pipe assembly or a small vapor chamber is sufficient. The data does not specify a required cooler size, but the power class implies that a capable air cooler is more than enough.

The 7 nm process node from TSMC helps keep thermals in check, as the die size is 156 mm² with 9,800 million transistors. This density means the heat is spread over a relatively large area for a mobile chip, which aids in passive cooling scenarios. The boost clock of 3.70 GHz is modest, so peak power draw during single-threaded bursts will be well within the 15 W envelope for short periods.

For sustained multi-threaded loads, the 4-core/8-thread design will hover near the TDP limit, but the base clock of 2.40 GHz ensures that even under full load, the processor stays cool enough for most laptop chassis. The integrated Radeon Graphics 320SP also draws from the same power budget, so gaming or GPU compute will reduce CPU headroom. The data shows no cooler tier requirement, but the practical advice is that any stock laptop cooler designed for a 15 W part will handle this CPU without throttling in normal use.

FAQ

Q: Does the Ryzen 3 PRO 4450U support ECC memory?

A: No, ECC memory is not supported per the fact pack.

Q: What is the memory bandwidth of this processor?

A: The dual-channel DDR4 bus provides a theoretical bandwidth of 68.3 GB/s.

Q: Can I overclock this CPU?

A: No, the multiplier is locked, and the part is not unlocked for overclocking.

Q: What integrated graphics does it have?

A: It includes Radeon Graphics with 320 SPs, which is built into the die.

Q: What socket does it use?

A: It uses AMD Socket FP6, which is a BGA package for mobile systems.

Q: Is this a current production part?

A: Yes, the production status is listed as Active, with a release date of 2020-05-06.

Benchmark Performance

The benchmark data covers Cinebench R15, R20, R23, and Geekbench, with both multi-core and single-core scores. In Cinebench R23 multi-core, the processor scores 8230, while the single-core score is 1161. The multi-core result is 7.1 times the single-core score, which is lower than the 8-thread theoretical maximum due to power and thermal constraints at the 15 W TDP. In Cinebench R20, the multi-core score is 3456 against 487 single-core, a ratio of 7.1. Cinebench R15 shows 829 multi-core and 116 single-core, a ratio of 7.1 as well. This consistent ratio indicates that the processor scales well with thread count but does not reach perfect linear scaling, which is expected for a mobile part.

Geekbench multi-core is 3972, and single-core is 1299, a ratio of 3.06. The lower ratio here reflects Geekbench’s mixed workload composition, which includes memory and integer tasks that do not scale purely with core count. The average benchmark score across all tests is 2444, with a percentile rank of 50 among all CPUs.

Compared to the Intel Core i5-8600, which has an average score of 2447, the Ryzen is 0.1% behind. In Cinebench R23 multi-core, the Ryzen’s 8230 would likely be competitive with the i5-8600’s 6-core design, but the aggregate data shows parity. Against the Intel Core i7-1365UE (2463), the Ryzen trails by 0.8%, which is a small margin given the i7’s newer architecture. The data indicates that the 4450U delivers performance in the same band as these rivals, despite having fewer physical cores than the i5 variants.

Single-Thread vs Multi-Thread Behavior

The single-core scores are modest: Cinebench R23 single-core is 1161, and Geekbench single-core is 1299. These numbers are typical for a low-power Zen 2 chip with a 3.70 GHz boost clock. The 2.40 GHz base clock means that sustained single-threaded workloads will drop below the boost, but short bursts will hit the maximum. For everyday tasks like web browsing or word processing, the single-core performance is adequate, but it will not match higher-clocked desktop parts.

The multi-core behavior is where the 4450U shows its strength relative to its power class. The Cinebench R23 multi-core score of 8230 is 7.1 times the single-core score, and the R20 ratio is identical at 7.1. This indicates that the 8 threads are utilized efficiently, with minimal overhead from the Zen 2 architecture. For workloads like video encoding or compilation, the processor will deliver consistent throughput, but the 15 W TDP means that long multi-threaded runs will settle at the base clock rather than holding boost.

The gap between single-thread and multi-thread performance is significant: the multi-core scores are roughly seven times higher, but the thread count is eight. This suggests that there is about a 12% loss from thermal or power limits under full load. For a 4-core/8-thread part, this is acceptable; the processor prioritizes burst performance for responsiveness while maintaining sustainable multi-threaded output. In mixed workloads, the Ryzen 3 PRO 4450U will feel snappy for single-threaded tasks and remain capable for parallel jobs, but users should not expect desktop-level sustained clocks. The data supports a balanced profile: it is not a single-thread champion, nor is it a multi-thread monster, but it is a well-rounded mobile chip.