AMD Instinct MI300X vs NVIDIA GeForce RTX 4050 Mobile Comparison

AMD Instinct MI300X and NVIDIA GeForce RTX 4050 Mobile occupy opposite ends of the hardware spectrum, one being a data center accelerator module and the other a laptop GPU. The database records a single shared benchmark, Geekbench OpenCL, where the results are not close. The MI300X scores 317994, while the RTX 4050 Mobile scores 74748, giving the AMD part a 325.4% advantage in that specific test. This page breaks down the recorded specifications, benchmark outcomes, and architectural differences between these two very different processors.

Head-to-Head Benchmarks

The only direct comparison available in the database is the Geekbench OpenCL test. The AMD Instinct MI300X delivers a score of 317994, which places it at the 100th percentile among all GPUs in the database. The NVIDIA GeForce RTX 4050 Mobile scores 74748, placing it at the 63rd percentile. The delta between them is 325.4% in favor of the AMD accelerator.

Context from the nearest rivals section clarifies the MI300X’s standing. Its average benchmark score of 317994 sits 5% below the NVIDIA H200 NVL (334891) and 8% below the NVIDIA B200 (345482). It is 7.5% ahead of the NVIDIA L40S (295763) and 10.7% ahead of the NVIDIA RTX 6000 Ada Generation (287237). These are all data center class cards, and the MI300X is competitive within that group.

The RTX 4050 Mobile, by contrast, has an average benchmark score of 19049. Its nearest rivals are much closer in performance. The AMD Radeon RX 6600 scores 19036, a 0.1% difference. The NVIDIA Quadro K6000 scores 19030, also a 0.1% difference. The NVIDIA Tesla K20m scores 19089, which is 0.2% higher. The NVIDIA RTX 2000 Ada Generation scores 18954, a 0.5% gap. The mobile chip sits in a dense cluster of mid-range performers, while the MI300X operates in a different performance tier entirely.

The RTX 4050 Mobile has additional recorded benchmarks in other APIs. Its Passmark G3D score is 14423, its GPU compute score is 5947, and its DirectX 11 score is 130. These do not have MI300X counterparts in the database, but they provide a fuller picture of the laptop part’s capabilities. The MI300X has only the single OpenCL score recorded.

Architecture Differences

The two chips come from different architectural lineages. The AMD Instinct MI300X uses CDNA 3.0, built on the Aqua Vanjaram chip, while the NVIDIA GeForce RTX 4050 Mobile uses Ada Lovelace, built on the AD107 chip. Both are manufactured by TSMC on a 5 nm process, which is where the similarities end.

The MI300X packs 153,000 million transistors onto a 1017 mm² die, resulting in a transistor density of 150.4 million per square millimeter. The RTX 4050 Mobile has 18,900 million transistors on a 159 mm² die, with a density of 118.9 million per square millimeter. The MI300X is a massive chip by any measure, and the die size difference is extreme.

Memory architecture diverges sharply. The MI300X uses 192 GB of HBM3 across an 8192-bit bus, delivering 5.32 TB/s of bandwidth. The RTX 4050 Mobile uses 6 GB of GDDR6 on a 96-bit bus, with 192.0 GB/s of bandwidth. The memory clock for the AMD part is recorded at 1300 MHz (5.2 Gbps effective), while the NVIDIA part runs at 2000 MHz (16 Gbps effective). The bus width difference explains the bandwidth gulf.

Compute resources follow the same pattern. The MI300X has 19456 shading units, 1216 texture mapping units, and reports 0 ROPs. Its pixel rate is 0 MPixel/s, and its texture rate is 2,553.6 GTexel/s. The RTX 4050 Mobile has 2560 shading units, 80 TMUs, 48 ROPs, 20 ray tracing cores, and 80 tensor cores. Its pixel rate is 84.24 GPixel/s, and its texture rate is 140.4 GTexel/s.

The MI300X does not report ray tracing or tensor core counts in the database. Its FP32 output is 81.72 TFLOPS, with FP16 also at 81.72 TFLOPS (1:1). The RTX 4050 Mobile delivers 8.986 TFLOPS in both FP32 and FP16 (1:1). The clock speeds reflect their roles: the MI300X runs at a base of 1000 MHz and a boost of 2100 MHz, while the RTX 4050 Mobile has a higher base of 1455 MHz but a lower boost of 1755 MHz.

API support differs as well. The MI300X lists DirectX, OpenGL, and Vulkan as N/A, while the RTX 4050 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The AMD part has no display outputs, while the NVIDIA part’s outputs are listed as portable device dependent.

Where Each One Wins

The MI300X wins decisively in the single shared benchmark, and its architecture targets a different workload class. Its 192 GB of HBM3 memory and 5.32 TB/s bandwidth indicate a focus on large-scale compute tasks where memory capacity and throughput matter more than rendering. The 750 W TDP and OAM module form factor confirm this is a server or data center component, not a consumer graphics card. The absence of display outputs and graphics APIs reinforces that positioning.

The RTX 4050 Mobile wins in portability and feature completeness. Its 50 W TDP makes it suitable for laptop integration, and its IGP slot width reflects a chip designed for mobile chassis. It includes ray tracing cores, tensor cores, and full DirectX 12 Ultimate support, features the MI300X does not list in the database. Its display outputs are portable device dependent, meaning it can drive screens in a laptop, something the MI300X cannot do at all.

The Passmark results for the RTX 4050 Mobile show a balanced mobile GPU. DirectX 9 scores 184, DirectX 11 scores 130, DirectX 10 scores 79, and DirectX 12 scores 61. The G2D score of 633 and G3D score of 14423 indicate typical mobile gaming performance. The MI300X has no comparable entries in these tests, so no direct comparison is possible outside Geekbench OpenCL.

Specification Differences

The recorded specifications highlight how far apart these parts are. Process node is identical at 5 nm, but transistor counts differ by an order of magnitude: 153,000 million versus 18,900 million. Die size is 1017 mm² versus 159 mm². Transistor density is 150.4M per mm² versus 118.9M per mm².

Clock speeds are different. The MI300X has a base clock of 1000 MHz and a boost of 2100 MHz. The RTX 4050 Mobile has a base of 1455 MHz and a boost of 1755 MHz. Memory clocks are 1300 MHz (5.2 Gbps effective) for the AMD part and 2000 MHz (16 Gbps effective) for the NVIDIA part.

Memory is the most lopsided field. Size is 192 GB versus 6 GB. Type is HBM3 versus GDDR6. Bus width is 8192 bit versus 96 bit. Bandwidth is 5.32 TB/s versus 192.0 GB/s.

Shading units are 19456 versus 2560. TMUs are 1216 versus 80. ROPs are 0 versus 48. The RTX 4050 Mobile has 20 ray tracing cores and 80 tensor cores; the MI300X lists none. Pixel rate is 0 MPixel/s versus 84.24 GPixel/s. Texture rate is 2,553.6 GTexel/s versus 140.4 GTexel/s.

FP32 compute is 81.72 TFLOPS versus 8.986 TFLOPS. FP16 is the same, 81.72 TFLOPS versus 8.986 TFLOPS. TDP is 750 W versus 50 W. Slot width is OAM Module versus IGP. Power connectors are none for both. The MI300X has a suggested PSU of 1150 W; the RTX 4050 Mobile has none listed.

Bus interface differs: PCIe 5.0 x16 for the MI300X, PCIe 4.0 x8 for the RTX 4050 Mobile. Release dates are 2023-12-05 and 2023-01-02, respectively. The MI300X has no listed production status; the RTX 4050 Mobile is active. Predecessor is Radeon Instinct for the AMD part and GeForce 30 Mobile for the NVIDIA part. Successor is null for the MI300X and GeForce 50 Mobile for the RTX 4050 Mobile.

FAQ

Q: Which GPU has the higher Geekbench OpenCL score?

A: The AMD Instinct MI300X scores 317994, while the NVIDIA GeForce RTX 4050 Mobile scores 74748. The MI300X leads by 325.4% in this test.

Q: How much memory does each GPU have?

A: The AMD Instinct MI300X has 192 GB of HBM3 memory with an 8192-bit bus and 5.32 TB/s bandwidth. The NVIDIA GeForce RTX 4050 Mobile has 6 GB of GDDR6 memory with a 96-bit bus and 192.0 GB/s bandwidth.

Q: What are the FP32 performance figures?

A: The MI300X delivers 81.72 TFLOPS in FP32. The RTX 4050 Mobile delivers 8.986 TFLOPS. Both chips report the same FP16 figure as their FP32 figure (1:1 ratio).

Q: Does the RTX 4050 Mobile support ray tracing?

A: Yes, the RTX 4050 Mobile has 20 ray tracing cores and 80 tensor cores. The MI300X does not list ray tracing or tensor core counts in the database.

Q: What APIs does each GPU support?

A: The RTX 4050 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300X lists DirectX, OpenGL, and Vulkan as N/A.

Q: What are the TDP figures?

A: The MI300X has a TDP of 750 W and a suggested PSU of 1150 W. The RTX 4050 Mobile has a TDP of 50 W and no suggested PSU listed.

The Verdict

The data separates these two clearly. The AMD Instinct MI300X is a data center accelerator built for massive compute and memory throughput. Its 192 GB HBM3 pool, 5.32 TB/s bandwidth, and 81.72 TFLOPS FP32 place it at the 100th percentile in the database. Its nearest rivals are other data center accelerators like the NVIDIA H200 NVL and B200, and it trades blows with them in average score. The 325.4% lead over the RTX 4050 Mobile in Geekbench OpenCL is consistent with the architectural gap.

The NVIDIA GeForce RTX 4050 Mobile is a laptop part with a 50 W TDP, 6 GB GDDR6, and full consumer graphics API support. It includes ray tracing cores, tensor cores, and display outputs, none of which the MI300X offers. Its nearest rivals are mid-range desktop and mobile parts like the AMD Radeon RX 6600 and the NVIDIA RTX 2000 Ada Generation, all within 0.5% of its average score. The 63rd percentile ranking reflects a competent mobile GPU, not a compute monster.

The choice depends on workload. For large-scale compute with enormous memory requirements, the MI300X is the only option with the recorded specifications to match. For a portable device that needs rendering, ray tracing, and display output, the RTX 4050 Mobile is the one with those features. They are not competitors in any meaningful sense; the database records them as different tools for different tasks. The benchmark gap is real, but so is the feature gap in the opposite direction.