AMD Instinct MI355X vs NVIDIA GeForce RTX 4050 Mobile Comparison

Head-to-Head Benchmarks

The database contains no shared benchmark scores for the AMD Instinct MI355X and the NVIDIA GeForce RTX 4050 Mobile. The Instinct MI355X has an empty benchmark record, resulting in an average benchmark score of 0 and a percentile rank of 50 among all GPUs. The GeForce RTX 4050 Mobile, by contrast, carries a full set of nine recorded tests, with an average benchmark score of 19,049 and a percentile rank of 63.

Since no head-to-head tests exist, the comparison must rely on the available specification data and the mobile GPU's standalone benchmark results. The RTX 4050 Mobile's strongest recorded result is in Geekbench Vulkan, scoring 75,235. Its Geekbench OpenCL result is nearly identical at 74,748, indicating consistent performance across those two APIs. In PassMark's suite, the directx_9 test produces the highest score of 184, followed by directx_11 at 130, directx_10 at 79, and directx_12 at 61. The PassMark G3D score is 14,423, while the GPU compute score is 5,947. The G2D result, which measures 2D performance, is 633.

The RTX 4050 Mobile's nearest rivals in the database are all desktop or professional parts. The AMD Radeon RX 6600 scores 19,036, a delta of 0.1 percent relative to the RTX 4050 Mobile. The NVIDIA Quadro K6000 scores 19,030, also a delta of 0.1 percent. The NVIDIA Tesla K20m scores 19,089, which is 0.2 percent higher than the RTX 4050 Mobile, making it the only rival in the group that edges ahead. The NVIDIA RTX 2000 Ada Generation scores 18,954, a delta of 0.5 percent below. These deltas show that the RTX 4050 Mobile sits in a tightly contested performance band, with all four rivals within half a percent of its average score.

The Instinct MI355X, with no benchmark scores recorded, cannot be positioned against these rivals. Its theoretical throughput figures, however, are dramatically higher. The FP32 compute rate is 78.64 TFLOPS, and the FP16 rate is identical at 78.64 TFLOPS with a 1:1 ratio. The RTX 4050 Mobile delivers 8.986 TFLOPS in FP32 and 8.986 TFLOPS in FP16, also at 1:1. The Instinct MI355X therefore offers roughly 8.75 times the FP32 throughput on paper, though no measured benchmark confirms this in the database.

The Verdict

The data indicates two products built for entirely different roles. The AMD Instinct MI355X is an OAM module with a 1,400 W TDP, designed for datacenter acceleration. It has no display outputs, no DirectX support, no OpenGL support, and no Vulkan support. Its APIs are listed as N/A across the board. The NVIDIA GeForce RTX 4050 Mobile is an integrated graphics package for laptops, with a 50 W TDP, portable device dependent display outputs, and full API support including DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

A user selecting between these two would be choosing between a compute accelerator and a mobile graphics processor. The RTX 4050 Mobile has recorded benchmark scores and a 63rd percentile rank, meaning it outperforms 63 percent of all GPUs in the database. The Instinct MI355X has a 50th percentile rank with no scores behind it, which reflects an absence of measurement data rather than a performance verdict.

The RTX 4050 Mobile's nearest rival comparisons confirm it is a mid-range performer in the broader database, matching desktop cards like the RX 6600 and Quadro K6000 within 0.1 percent. For anyone needing a functioning graphics solution with driver support for standard APIs, the RTX 4050 Mobile is the only option with verified results. For anyone needing massive memory capacity and compute throughput in a server context, the Instinct MI355X offers 288 GB of HBM3e memory with 8.19 TB/s of bandwidth, figures that dwarf the mobile part's 6 GB GDDR6 at 192.0 GB/s.

Architecture Differences

The two GPUs come from different architectural lineages. The AMD Instinct MI355X uses the CDNA 4.0 architecture, built on a 3 nm process at TSMC. The chip is designated MI350 256CU, and it belongs to the Instinct (MIx) generation. The NVIDIA GeForce RTX 4050 Mobile uses the Ada Lovelace architecture, built on a 5 nm process, also at TSMC. Its chip is the AD107, part of the GeForce 40 Mobile generation.

The Instinct MI355X contains 185,000 million transistors on a die size of 2,380 mm². That translates to a transistor density of 77.7 million per mm². The RTX 4050 Mobile contains 18,900 million transistors on a die size of 159 mm², giving a density of 118.9 million per mm². The mobile chip is therefore denser per square millimeter, while the Instinct part is vastly larger in absolute terms.

Shader resources differ by a wide margin. The Instinct MI355X has 16,384 shading units and 1,024 texture mapping units. It has no ROPs, no ray tracing cores, and no tensor cores listed. The RTX 4050 Mobile has 2,560 shading units, 80 TMUs, 48 ROPs, 20 ray tracing cores, and 80 tensor cores. The Instinct part reports a pixel rate of 0 MPixel/s and a texture rate of 2,457.6 GTexel/s. The RTX 4050 Mobile reports a pixel rate of 84.24 GPixel/s and a texture rate of 140.4 GTexel/s.

The memory architectures are fundamentally different. The Instinct MI355X uses HBM3e with 288 GB capacity, an 8,192 bit bus, and 8.19 TB/s bandwidth. The RTX 4050 Mobile uses GDDR6 with 6 GB capacity, a 96 bit bus, and 192.0 GB/s bandwidth. The Instinct memory clock is 2000 MHz with 8 Gbps effective, and the RTX 4050 Mobile memory clock is also 2000 MHz with 16 Gbps effective. The higher effective data rate on the mobile part does not compensate for the drastically narrower bus and smaller capacity.

Specification Differences

The two parts differ across nearly every specification field. The Instinct MI355X has a base clock of 1000 MHz and a boost clock of 2400 MHz. The RTX 4050 Mobile has a base clock of 1455 MHz and a boost clock of 1755 MHz. The mobile chip runs at a higher base clock, but the Instinct part boosts substantially higher.

The bus interface differs: the Instinct MI355X uses PCIe 5.0 x16, while the RTX 4050 Mobile uses PCIe 4.0 x8. The Instinct part is an OAM module with no power connectors and a recommended PSU of 1,800 W. The RTX 4050 Mobile is an IGP with no power connectors and no suggested PSU listed. The Instinct part has dimensions of 102 mm length and 165 mm width, while the RTX 4050 Mobile has no recorded dimensions.

The release timeline differs as well. The Instinct MI355X has a release date of 2025-06-11, while the RTX 4050 Mobile released on 2023-01-02. The RTX 4050 Mobile has a predecessor in the GeForce 30 Mobile series and a successor in the GeForce 50 Mobile series. The Instinct MI355X lists the Radeon Instinct as its predecessor and has no successor recorded. The production status of the Instinct MI355X is not listed, while the RTX 4050 Mobile is marked as Active.

Neither part has a launch MSRP recorded in the database.

FAQ

Q: Which GPU has more memory bandwidth?

A: The AMD Instinct MI355X has 8.19 TB/s of bandwidth from HBM3e memory on an 8,192 bit bus. The NVIDIA GeForce RTX 4050 Mobile has 192.0 GB/s from GDDR6 on a 96 bit bus.

Q: Does the RTX 4050 Mobile support ray tracing?

A: Yes, the RTX 4050 Mobile has 20 ray tracing cores and supports DirectX 12 Ultimate (12_2), which includes ray tracing features. The Instinct MI355X lists no ray tracing cores and no DirectX support.

Q: What is the average benchmark score for each GPU?

A: The RTX 4050 Mobile has an average benchmark score of 19,049. The Instinct MI355X has an average benchmark score of 0, because no benchmark results are recorded for it.

Q: How does the RTX 4050 Mobile compare to its nearest rivals?

A: The RTX 4050 Mobile is within 0.5 percent of all four nearest rivals. It is 0.1 percent ahead of the AMD Radeon RX 6600 and the NVIDIA Quadro K6000, 0.5 percent ahead of the NVIDIA RTX 2000 Ada Generation, and 0.2 percent behind the NVIDIA Tesla K20m.

Q: What is the transistor density of each chip?

A: The Instinct MI355X has a density of 77.7 million transistors per mm² across a 2,380 mm² die. The RTX 4050 Mobile has a density of 118.9 million transistors per mm² across a 159 mm² die.

Q: Which GPU has a higher FP32 throughput?

A: The Instinct MI355X delivers 78.64 TFLOPS in FP32, while the RTX 4050 Mobile delivers 8.986 TFLOPS. Both parts offer the same FP16 rate as their FP32 rate, at a 1:1 ratio.

Where Each One Wins

The AMD Instinct MI355X wins on raw compute capacity and memory scale. Its 78.64 TFLOPS FP32 and FP16 throughput, 288 GB of HBM3e memory, and 8.19 TB/s bandwidth position it for memory-bound datacenter workloads such as large model inference or scientific computing. Its 1,024 TMUs and 2,457.6 GTexel/s texture rate indicate high fill capacity, and its 3 nm process with 185,000 million transistors shows a design scaled for maximum throughput rather than power efficiency. The PCIe 5.0 x16 interface supports high-speed host communication, and the 2,400 MHz boost clock provides headroom for compute bursts.

The NVIDIA GeForce RTX 4050 Mobile wins on measured performance data, API compatibility, and practical deployability. Its nine recorded benchmark scores give it a verified average of 19,049, placing it in the 63rd percentile. Its nearest rival comparisons show it trading blows with desktop class GPUs, all within 0.5 percent. It supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, making it usable across standard graphics workloads. Its 50 W TDP and IGP form factor suit laptop integration, and its 20 ray tracing cores and 80 tensor cores enable modern rendering and AI features. The 84.24 GPixel/s pixel rate and 140.4 GTexel/s texture rate, while far below the Instinct part, are appropriate for a mobile GPU.

The Instinct MI355X has no benchmark scores in the database, so its wins are entirely theoretical. The RTX 4050 Mobile has no wins in raw throughput or memory capacity, but it has the only verified performance record. For any workload requiring display output, graphics APIs, or ray tracing, the RTX 4050 Mobile is the only candidate with supporting data. For any workload requiring massive memory and compute density in a server chassis, the Instinct MI355X is the only candidate with the necessary specifications.