AMD Ryzen 3 3100U

The AMD Ryzen 3 3100U is a mobile processor from the 3000 series, built on the 12 nm Picasso architecture. It features 2 cores and 2 threads, with a base clock of 1.90 GHz and a boost clock of 3.20 GHz, paired with a 15 W TDP. Benchmark data places its average score at 6247, which positions it in the 62nd percentile of all CPUs, indicating a mid-pack standing for its generation.

Benchmark Performance

The Ryzen 3 3100U’s average benchmark score of 6247 is a composite of its individual workload tests. The data shows a clear split between single-threaded and multi-threaded capability. Its PassMark single-thread score is 1592, while the multithread score is 3348, reflecting a 2.1x scaling factor that aligns with its 2-core, 2-thread layout.

In specific compute tasks, the processor demonstrates distinct strengths. The integer math score of 8873 is notably strong for a dual-core part, suggesting efficient branch handling and ALU operations. Floating-point math scores 5854, which is lower proportionally, indicating a more modest FPU throughput. Data compression scores an impressive 38455, a figure that often scales with memory bandwidth and cache efficiency, while data encryption scores 1972, a lower result that points to the absence of dedicated cryptographic acceleration features.

Extended instruction set performance (2116) and random string sorting (4666) are mid-range results. The find prime numbers score of 18 is exceptionally low, which is typical for a processor with limited core count and no turbo boost headroom in sustained workloads. The physics score of 232 is similarly constrained, reflecting the limitations of dual-core execution in simulation-style tasks.

Relative to its nearest rivals, the 3100U is remarkably close in overall performance. It sits 0.3% above the AMD Ryzen Threadripper 1950X, which has an average score of 6231. It is 1% ahead of the AMD EPYC 7272 (6186). Against Intel parts, it trails the Core i9-10920X by 1.6% (6347) but leads the Core i9-7940X by 1.6% (6147). These deltas are within a narrow band of plus or minus 1.6%, meaning the 3100U delivers a comparable average score to these high-core-count desktop and server parts, despite having far fewer cores. This reflects its per-core efficiency at the modest 15 W power envelope.

Platform and Compatibility

The Ryzen 3 3100U is designed for the AMD Socket FP5, which is a mobile-specific socket. This means it is not compatible with desktop AM4 motherboards or any standard desktop platform. The processor is part of the 3000 series generation, built on the Picasso codename, which is a Zen+ derivative. The production status is active, and the part number is YM3100C4T2OFG.

Memory support is limited to DDR4, operating on a dual-channel bus. The total memory bandwidth is listed at 38.4 GB/s. This is a fixed specification, meaning the processor does not support faster memory standards like DDR5. ECC memory is not supported, which is typical for the mobile segment. The integrated memory controller runs at the specified bandwidth, and the dual-channel configuration is essential for the iGPU to function effectively, as it shares system memory.

PCIe support is Gen 3, which is one generation behind the newer PCIe Gen 4 and Gen 5 standards found in more recent platforms. For a mobile processor, this is sufficient for the primary drive and GPU connectivity, but it limits the theoretical bandwidth for future expansion. The upgrade path is essentially non-existent in the traditional sense; because it is soldered or BGA-mounted on FP5 boards, users cannot swap the processor. The entire platform is fixed at the time of purchase. The integrated graphics is Radeon Vega 8, which relies on the dual-channel DDR4 memory for its frame buffer, so the 38.4 GB/s bandwidth is a key constraint for gaming performance.

Power and Thermals

The thermal design power (TDP) is specified at 15 W. This classifies the 3100U as an ultra-low-power mobile processor, designed for thin-and-light laptops and compact devices. The 15 W figure implies that a passive or very low-profile active cooling solution is sufficient. A small fan or a simple heat pipe assembly can manage the thermal output without significant noise or bulk.

The 12 nm process node from GlobalFoundries is not state-of-the-art by modern standards, but it is adequate for this power class. The die size is 210 mm², which is relatively large for a dual-core chip, primarily because it integrates the Radeon Vega 8 graphics and the memory controller. The transistor count is 4,940 million, which is high for a processor of this core count, again pointing to the substantial iGPU and uncore logic.

Benchmark results do not directly measure power draw, but the low TDP and the modest clock speeds (1.90 GHz base, 3.20 GHz boost) indicate that the processor will not sustain high boost clocks under full load for extended periods. The find prime numbers score of 18 and physics score of 232 suggest that the CPU throttles or runs out of power headroom quickly when all execution units are active. For sustained workloads, users should expect performance closer to the base clock rather than the boost clock. The thermal solution tier implied is entry-level: a basic heat pipe and fan combo or a well-ventilated chassis is sufficient, and there is no need for high-end liquid cooling or oversized heatsinks.

FAQ

Q: What is the average benchmark score of the AMD Ryzen 3 3100U?

A: The average benchmark score is 6247, placing it in the 62nd percentile of all CPUs.

Q: How does the Ryzen 3 3100U compare to the AMD Ryzen Threadripper 1950X?

A: The 3100U is 0.3% ahead of the Threadripper 1950X in average benchmark score, with the Threadripper scoring 6231.

Q: What memory type and bus configuration does the 3100U support?

A: It supports DDR4 memory on a dual-channel bus, with a total memory bandwidth of 38.4 GB/s. ECC memory is not supported.

Q: Does the Ryzen 3 3100U have an integrated GPU?

A: Yes, it integrates a Radeon Vega 8 graphics unit. This GPU shares system memory, so the dual-channel DDR4 bandwidth is critical for its performance.

Q: What is the TDP of the Ryzen 3 3100U?

A: The TDP is 15 W, which classifies it as an ultra-low-power mobile processor suitable for thin laptops with basic cooling solutions.

Q: Is the Ryzen 3 3100U overclockable?

A: No, the multiplier is locked, and the processor is not unlocked for overclocking. The boost clock is fixed at 3.20 GHz.

Who Should Consider It

The Ryzen 3 3100U is best suited for users whose primary workloads are single-threaded or lightly threaded. The single-thread score of 1592 indicates that everyday office tasks such as web browsing, document editing, and spreadsheet manipulation will be handled competently. The integer math score of 8873 is also favorable for general productivity applications that rely on logical operations rather than heavy floating-point calculations.

For gaming, the Radeon Vega 8 iGPU is present, but the processor’s dual-core limitation is a bottleneck. The physics score of 232 suggests that modern games with complex physics simulations will struggle. Older or less demanding titles, or eSports games that are CPU-light, may run acceptably at lower settings. The 38.4 GB/s memory bandwidth is sufficient for the iGPU, but it is not a high-performance gaming platform. Users should not expect a smooth experience in AAA titles.

For content creation, the 3100U is not a suitable choice. The multi-thread score of 3348 and the floating-point math score of 5854 are too low for video editing, 3D rendering, or large-scale photo processing. The data compression score of 38455 is an outlier strength, but it does not translate to creative workloads. The processor is better for data entry, light programming, or as a secondary machine for basic tasks.

The market segment is explicitly mobile, so it is intended for laptops and portable devices. The 62nd percentile ranking means it is above the median for all CPUs, but that is skewed by the inclusion of older desktop parts. In the context of modern mobile processors, it is an entry-level part. Users who need long battery life and basic computing capability will find it adequate, but those who push multi-core performance will be disappointed.

Single-Thread vs Multi-Thread Behavior

The 3100U has a single-thread score of 1592 and a multi-thread score of 3348. The ratio of multi-thread to single-thread is roughly 2.1x, which is expected for a processor with 2 cores and 2 threads. There is no SMT or Hyper-Threading, so each core handles exactly one thread. This means the multi-thread score is essentially the single-thread score multiplied by the core count, with minor scaling losses.

In real workloads, this split means that applications that are serial in nature—such as opening files, launching programs, or interacting with a user interface—will perform exactly as the single-thread score indicates. The 1592 score is moderate, so responsiveness is acceptable but not snappy. Tasks like database lookups or script execution that rely on a single thread will see no benefit from the second core.

Conversely, applications that are parallelized will see a near-linear improvement up to two threads. Video encoding (if the software supports it), file compression (as evidenced by the high data compression score of 38455), and some scientific calculations will use both cores effectively. However, any workload that requires more than two threads will see a cliff in performance because the processor cannot handle additional concurrent threads. The multi-thread score of 3348 is low compared to modern quad-core or octa-core parts, so the 3100U will lag significantly in modern multi-threaded benchmarks like video rendering or software compilation.

The single-thread score is also the more important metric for gaming, where the main game logic thread is often the bottleneck. The 1592 score is below the threshold for high-refresh-rate gaming but adequate for 30-60 FPS in less demanding titles. The physics score of 232 is a separate benchmark that specifically tests multi-threaded physics, and its low value confirms that the dual-core design hampers simulation-heavy games.

How It Compares

AMD Ryzen Threadripper 1950X: The 3100U is 0.3% ahead of the Threadripper 1950X in average benchmark score. This is a remarkable result because the Threadripper is a 16-core desktop behemoth, but its lower per-core clock speed and older architecture allow the 3100U to match it in the aggregate PassMark score. In practice, the Threadripper would dominate multi-threaded tasks, but the 3100U wins in single-thread efficiency.

AMD EPYC 7272: The 3100U leads the EPYC 7272 by 1% in average score. The EPYC 7272 is a server processor with a much higher core count, but its lower clocks and server-oriented design result in a similar average benchmark score. The 3100U’s advantage here is marginal and likely stems from higher single-thread performance, which offsets the EPYC’s core advantage in the weighted average.

Intel Core i9-10920X: The 3100U trails the Core i9-10920X by 1.6%. The i9-10920X is a 12-core desktop part with a higher TDP and clock speeds. Despite this, the 3100U is within 1.6% of its average score, which is a narrow margin. The i9-10920X would be far faster in multi-threaded workloads, but the 3100U’s efficient dual-core design keeps the average score close.

Intel Core i9-7940X: The 3100U is 1.6% ahead of the Core i9-7940X. The i9-7940X is a 14-core part, and the 3100U’s lead is surprising but consistent with the data. The i9-7940X has a lower average score of 6147, which the 3100U surpasses despite having a fraction of the cores. This highlights the 3100U’s strong per-core performance at a much lower power draw.

Architecture and Design

The Ryzen 3 3100U is built on the Picasso codename, which is part of the Zen+ architecture generation. The process node is 12 nm, manufactured by GlobalFoundries. The die size is 210 mm², and the transistor count is 4,940 million. This is a monolithic die, meaning the CPU cores, iGPU, and memory controller are all on a single piece of silicon.

The core layout consists of 2 cores and 2 threads, with no simultaneous multithreading. Each core has 96 KB of L1 cache and 512 KB of L2 cache. The L3 cache is 4 MB and shared between the two cores. This cache hierarchy is modest by modern standards, but the 4 MB L3 is sufficient for the dual-core design, reducing the penalty for memory accesses when compared to a larger core count.

The integrated graphics is Radeon Vega 8, which is a Vega-based iGPU with 8 compute units. This is a significant portion of the die, explaining the high transistor count and die size. The iGPU shares the L3 cache and system memory, with no dedicated VRAM. The memory bandwidth of 38.4 GB/s is a shared resource between the CPU and GPU, so heavy graphics loads can starve the CPU of memory bandwidth.

The 12 nm process node is a mature node, and the Zen+ architecture is a refinement of the original Zen. It offers improved clock speeds and memory latency compared to the first generation, but it lacks the IPC gains of Zen 2 or Zen 3. The 1.90 GHz base clock is low, but the 3.20 GHz boost clock provides reasonable headroom for short bursts of activity. The processor is not multiplier-unlocked, so the boost clock is the maximum achievable speed. The socket is FP5, which is a BGA package, confirming the soldered, non-upgradable nature of the platform.