AMD Radeon Instinct MI300 vs AMD Radeon RX 9050 Comparison

The Verdict

The AMD Radeon Instinct MI300 and the AMD Radeon RX 9050 are polar opposites within AMD’s lineup, designed for entirely different workloads. The MI300 is a data center compute accelerator built on CDNA 3.0 architecture, while the RX 9050 is a client graphics card built on RDNA 4.0 architecture. Based on the recorded data, there is no head-to-head benchmark overlap, as the MI300 focuses on raw compute throughput and memory capacity, whereas the RX 9050 targets conventional rendering and rasterization. The MI300 delivers 47.87 TFLOPS FP32 and 383.0 TFLOPS FP16 (8:1), while the RX 9050 delivers 10.65 TFLOPS FP32 and 10.65 TFLOPS FP16 (1:1). For users needing massive parallel compute, the MI300 is the clear choice; for standard graphics workloads, the RX 9050 is the only one with display outputs and a DirectX 12 Ultimate API.

Architecture Differences

The two GPUs share a manufacturer and foundry, but their architectures diverge sharply. The MI300 uses the Aqua Vanjaram chip, built on CDNA 3.0, with a 5 nm process at TSMC. It packs 153,000 million transistors on a 1017 mm² die, yielding a transistor density of 150.4M / mm². The RX 9050 uses the Navi 44 chip, built on RDNA 4.0, with a 4 nm process at TSMC. It contains 29,700 million transistors on a 199 mm² die, with a transistor density of 149.2M / mm². The MI300 has no raster output units (ROPs), no ray tracing cores, and no display outputs, confirming its non-rendering role. The RX 9050 has 64 ROPs, 16 ray tracing cores, and supports 1x HDMI 2.1b and 2x DisplayPort 2.1a outputs. The MI300’s memory subsystem uses 128 GB of HBM3 over an 8192-bit bus, while the RX 9050 uses 8 GB of GDDR6 over a 128-bit bus. The MI300 also lacks a DirectX version, OpenGL version, and Vulkan version in the database, while the RX 9050 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Head-to-Head Benchmarks

The database contains no shared benchmark scores between the MI300 and the RX 9050. Both have an average benchmark score of 0 and a percentile rank of 50 against all GPUs. Therefore, direct performance comparisons must rely on their recorded specifications. The MI300’s FP32 throughput of 47.87 TFLOPS is 4.5 times higher than the RX 9050’s 10.65 TFLOPS. In FP16, the MI300’s 383.0 TFLOPS (8:1) dwarfs the RX 9050’s 10.65 TFLOPS (1:1), a 36-fold difference. Texture rate also favors the MI300 at 1,496.0 GTexel/s versus 166.4 GTexel/s for the RX 9050. The RX 9050, however, has a pixel rate of 166.4 GPixel/s, while the MI300 records 0 MPixel/s, confirming the MI300 cannot rasterize at all. Memory bandwidth is another major split: 6.55 TB/s for the MI300 versus 288.0 GB/s for the RX 9050. Clock speeds tell a different story: the RX 9050 boosts to 2600 MHz with a base of 1330 MHz and a game clock of 1920 MHz, while the MI300 boosts to 1700 MHz with a base of 1000 MHz. The RX 9050 also has a higher memory clock at 2250 MHz (18 Gbps effective) versus the MI300’s 1600 MHz (6.4 Gbps effective).

FAQ

Q: Which GPU has higher FP32 compute?

A: The AMD Radeon Instinct MI300 delivers 47.87 TFLOPS FP32, which is 4.5 times higher than the AMD Radeon RX 9050’s 10.65 TFLOPS FP32.

Q: Can the AMD Radeon Instinct MI300 output video to a display?

A: No. The MI300 has no display outputs, while the RX 9050 includes 1x HDMI 2.1b and 2x DisplayPort 2.1a.

Q: What is the memory capacity difference?

A: The MI300 has 128 GB of HBM3 memory, while the RX 9050 has 8 GB of GDDR6 memory. The MI300’s bus width is 8192 bit versus 128 bit for the RX 9050.

Q: Does the RX 9050 support ray tracing?

A: Yes, the RX 9050 has 16 ray tracing cores. The MI300 has no ray tracing cores listed in the database.

Q: Which GPU has a smaller manufacturing process?

A: The RX 9050 uses a 4 nm process at TSMC, while the MI300 uses a 5 nm process at the same foundry.

Q: What is the power draw difference?

A: The MI300 has a TDP of 600 W with a suggested PSU of 1000 W, while the RX 9050 has a TDP of 92 W with a suggested PSU of 250 W.

Where Each One Wins

The AMD Radeon Instinct MI300 wins decisively in compute throughput, memory capacity, and memory bandwidth. Its 47.87 TFLOPS FP32 and 383.0 TFLOPS FP16 make it suitable for high-performance computing and AI workloads, though the database does not list tensor cores. Its 128 GB HBM3 memory with 6.55 TB/s bandwidth supports massive datasets. The MI300 also has a higher texture rate at 1,496.0 GTexel/s. It uses dual 8-pin power connectors and has a 267 mm length (10.5 inches) with a 111 mm height (4.4 inches). Its power draw is 600 W, and it requires a 1000 W suggested PSU.

The AMD Radeon RX 9050 wins in every area related to client graphics. It has 64 ROPs, a pixel rate of 166.4 GPixel/s, and 16 ray tracing cores. It supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, making it compatible with modern game APIs. Its boost clock of 2600 MHz is higher than the MI300’s 1700 MHz, and its game clock of 1920 MHz indicates sustained rendering performance. The RX 9050 uses a single 8-pin power connector, has a TDP of 92 W, and a suggested PSU of 250 W. It is a dual-slot card and is listed as active in production status. The RX 9050’s FP16 throughput matches its FP32 at 10.65 TFLOPS (1:1), which is unusual but not advantageous for compute-heavy tasks.

Specification Differences

The two GPUs differ in nearly every recorded specification. The MI300’s chip is Aqua Vanjaram with CDNA 3.0 architecture, while the RX 9050 uses Navi 44 with RDNA 4.0. The MI300 has 14,080 shading units and 880 texture mapping units (TMUs), while the RX 9050 has 1,024 shading units and 64 TMUs. The MI300 has zero ROPs, the RX 9050 has 64. The MI300’s base clock is 1000 MHz, boost 1700 MHz, and memory clock 1600 MHz (6.4 Gbps effective). The RX 9050’s base clock is 1330 MHz, boost 2600 MHz, game clock 1920 MHz, and memory clock 2250 MHz (18 Gbps effective). Memory type differs: HBM3 for the MI300 versus GDDR6 for the RX 9050. Power connectors differ: 2x 8-pin for the MI300 versus 1x 8-pin for the RX 9050. The MI300 has no display outputs, while the RX 9050 has 1x HDMI 2.1b and 2x DisplayPort 2.1a. The MI300 has no DirectX, OpenGL, or Vulkan support listed, while the RX 9050 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300’s release date is 2023-01-03, while the RX 9050’s release date is 2026-07-27. The MI300’s predecessor is FirePro Data Center, while the RX 9050’s predecessor is Navi III. Neither has a launch MSRP listed in the database. The MI300’s production status is not recorded, while the RX 9050 is active. The MI300 has a die size of 1017 mm², the RX 9050 has a die size of 199 mm². Transistor counts are 153,000 million versus 29,700 million. The MI300 has no slot width listed, while the RX 9050 is dual-slot. The MI300 has a transistor density of 150.4M / mm², the RX 9050 has 149.2M / mm². Both use PCIe 5.0 x16 interfaces. The MI300’s texture rate is 1,496.0 GTexel/s, the RX 9050’s is 166.4 GTexel/s. The MI300’s pixel rate is 0 MPixel/s, the RX 9050’s is 166.4 GPixel/s. The MI300’s FP16 figure is 383.0 TFLOPS (8:1), the RX 9050’s is 10.65 TFLOPS (1:1). The MI300 has 128 GB memory, the RX 9050 has 8 GB. The MI300’s memory bus is 8192 bit, the RX 9050’s is 128 bit. The MI300’s bandwidth is 6.55 TB/s, the RX 9050’s is 288.0 GB/s. The MI300’s TDP is 600 W, the RX 9050’s is 92 W. The MI300’s suggested PSU is 1000 W, the RX 9050’s is 250 W. The MI300 measures 267 mm in length (10.5 inches) and 111 mm in height (4.4 inches), while the RX 9050 has no dimensions listed.