AMD Instinct MI300 vs AMD Radeon PRO W7400 Comparison

Head-to-Head Benchmarks

The recorded data set does not contain any benchmark scores for either the AMD Instinct MI300 or the AMD Radeon PRO W7400. The average benchmark score for both entries is zero, and the head-to-head benchmark comparison table is empty. Consequently, there are no wins attributed to either product in direct performance comparisons. The database indicates that both GPUs occupy the 50th percentile among all recorded GPUs, but this percentile value is derived from an empty benchmark history, meaning it reflects a neutral placement rather than a measured performance ranking. Without recorded scores, any attempt to quantify relative speed, throughput, or rendering capability would be speculative. The data confirms zero wins for each side, and the nearest rivals list is also empty, so no comparative deltas exist to reference. The absence of benchmark entries means the analysis must rely entirely on architectural and specification differences to differentiate these two accelerators.

FAQ

Q: What is the difference in memory capacity between the two GPUs?

A: The AMD Instinct MI300 features 128 GB of HBM3 memory, while the AMD Radeon PRO W7400 uses 8 GB of GDDR6 memory. This represents a 16x difference in capacity favoring the Instinct MI300.

Q: How do the memory bandwidth figures compare?

A: The Instinct MI300 delivers 5.32 TB/s of bandwidth across an 8192-bit bus, whereas the Radeon PRO W7400 provides 172.8 GB/s over a 128-bit bus. The Instinct MI300 offers approximately 30 times the memory bandwidth of the Radeon PRO W7400.

Q: Which GPU has a higher boost clock speed?

A: The Instinct MI300 boosts to 1700 MHz, while the Radeon PRO W7400 boosts to 1100 MHz. The Instinct MI300 holds a 600 MHz advantage in boost clock.

Q: Are both GPUs based on the same architecture?

A: No. The Instinct MI300 uses CDNA 3.0 architecture, while the Radeon PRO W7400 uses RDNA 3.0 architecture. Both are built by AMD, but they target fundamentally different workloads.

Q: What is the power consumption difference?

A: The Instinct MI300 has a TDP of 600 W and requires 2x 8-pin power connectors with a suggested power supply of 1000 W. The Radeon PRO W7400 has a TDP of 55 W, uses no external power connectors, and requires only a 250 W suggested power supply.

Q: Does either GPU support display outputs?

A: The Radeon PRO W7400 provides 4x DisplayPort 2.1 outputs. The Instinct MI300 has no display outputs, indicating it is designed for compute tasks rather than visual output.

Architecture Differences

The AMD Instinct MI300 is built on the CDNA 3.0 architecture, which is AMD's dedicated compute-optimized design. Its chip, codenamed Aqua Vanjaram, uses a 5 nm process at TSMC and packs 153,000 million transistors on a 1017 mm² die. This results in a transistor density of 150.4M per mm². The architecture is tailored for data center and HPC workloads, emphasizing raw numerical throughput over graphical rendering. The MI300 includes 14,080 shading units, 880 texture mapping units, and 0 ROPs, which confirms it has no rasterization pipeline. Its pixel rate is recorded as 0 MPixel/s, and its texture rate is 1,496.0 GTexel/s. The FP32 and FP16 compute figures are both 47.87 TFLOPS at a 1:1 ratio, indicating symmetrical throughput for single and half precision operations. There are no ray tracing cores listed, and the API support is marked as N/A for DirectX, OpenGL, and Vulkan, reinforcing that this is a compute-only accelerator.

The AMD Radeon PRO W7400, in contrast, uses the RDNA 3.0 architecture, which is a graphics-first design. Its chip, codenamed Hotpink Bonefish, is fabricated on a 6 nm process at TSMC and contains 13,300 million transistors on a 204 mm² die. The transistor density is 65.2M per mm², less than half that of the MI300. The RDNA 3.0 architecture includes a full rasterization pipeline with 64 ROPs, producing a pixel rate of 70.40 GPixel/s. It also has 28 ray tracing cores, making it capable of hardware-accelerated ray tracing. The shading unit count is 1,792, with 112 TMUs, and the texture rate is 123.2 GTexel/s. FP32 and FP16 performance are both 7.885 TFLOPS at a 1:1 ratio. The W7400 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, confirming its role as a professional graphics workstation card. These architectural differences are fundamental: CDNA 3.0 strips away display and graphics features to maximize compute density, while RDNA 3.0 retains full graphics functionality with ray tracing support.

Specification Differences

The two GPUs diverge sharply across nearly every specification field. The Instinct MI300 uses a 5 nm process node, while the Radeon PRO W7400 uses 6 nm. The MI300 has 153,000 million transistors versus 13,300 million for the W7400, a 11.5x difference. Die size is 1017 mm² for the MI300 and 204 mm² for the W7400. Transistor density is 150.4M per mm² versus 65.2M per mm².

Clock speeds differ: the MI300 has a base clock of 1000 MHz and boost of 1700 MHz, while the W7400 has a base of 330 MHz and boost of 1100 MHz. Memory configuration is a major split: the MI300 uses 128 GB of HBM3 with an 8192-bit bus and 5.32 TB/s bandwidth, while the W7400 uses 8 GB of GDDR6 with a 128-bit bus and 172.8 GB/s bandwidth. The MI300 memory clock is 1300 MHz with 5.2 Gbps effective, while the W7400 memory clock is 1350 MHz with 10.8 Gbps effective.

Compute resources: the MI300 has 14,080 shading units, 880 TMUs, and 0 ROPs, while the W7400 has 1,792 shading units, 112 TMUs, and 64 ROPs. The MI300 has no ray tracing cores, while the W7400 has 28. Pixel rates are 0 MPixel/s for the MI300 and 70.40 GPixel/s for the W7400. Texture rates are 1,496.0 GTexel/s versus 123.2 GTexel/s. FP32 and FP16 are 47.87 TFLOPS for the MI300 and 7.885 TFLOPS for the W7400.

Power and physical specs also differ. The MI300 has a TDP of 600 W, requires 2x 8-pin power connectors, and a 1000 W suggested PSU. The W7400 has a TDP of 55 W, no power connectors, and a 250 W suggested PSU. The MI300 measures 267 mm by 111 mm, while the W7400 measures 168 mm by 69 mm by 20 mm and is single-slot. The MI300 uses PCIe 5.0 x16, while the W7400 uses PCIe 4.0 x8. Display outputs: the MI300 has none, the W7400 has 4x DisplayPort 2.1. The MI300 lists no API support, while the W7400 supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. Release dates are 2023-01-03 for the MI300 and 2025-08-02 for the W7400. The MI300's predecessor is Radeon Instinct, while the W7400's predecessor is Radeon Pro Vega.

Where Each One Wins

The AMD Instinct MI300 is positioned for compute-heavy workloads that require massive memory capacity and bandwidth. Its 128 GB of HBM3 memory with 5.32 TB/s bandwidth is suited for large data sets, such as training large language models, scientific simulations, or processing massive matrices. The 47.87 TFLOPS of FP32 and FP16 compute, delivered at a 1:1 ratio, indicates strong performance for mixed-precision workloads. The absence of display outputs and rasterization hardware confirms it is not intended for graphics output. The PCIe 5.0 x16 interface provides high-bandwidth host connectivity. The 600 W TDP and 1000 W suggested PSU reflect its data center orientation, where power density is acceptable in exchange for compute throughput.

The AMD Radeon PRO W7400 wins in every category related to graphical output and workstation flexibility. It has 4x DisplayPort 2.1 outputs, a full raster pipeline with 64 ROPs, and 28 ray tracing cores. The 70.40 GPixel/s pixel rate and 123.2 GTexel/s texture rate are meaningful for real-time rendering, CAD, and video editing. Its DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 support make it compatible with professional graphics applications. The 55 W TDP and no power connectors allow installation in compact or power-constrained systems. Its 8 GB of GDDR6 memory is sufficient for typical workstation graphics tasks, and its single-slot, 168 mm length fits in smaller chassis. The PCIe 4.0 x8 interface is adequate for its bandwidth needs.

The Verdict

The recorded data indicates a strict division of purpose. The AMD Instinct MI300 is a compute accelerator with no graphics capability, evidenced by zero ROPs, 0 MPixel/s pixel rate, no display outputs, and N/A API support. It delivers 47.87 TFLOPS of FP32 and FP16 compute, 128 GB of HBM3 memory, and 5.32 TB/s bandwidth. These figures place it in a category for data center compute, large model inference, and scientific processing.

The AMD Radeon PRO W7400 is a professional graphics card with full rendering features, 64 ROPs, 28 ray tracing cores, and 4x DisplayPort 2.1 outputs. Its 7.885 TFLOPS FP32 performance and 8 GB GDDR6 memory are oriented toward workstation graphics, visualization, and content creation. The 55 W TDP and single-slot design suit it for desktop workstations.

The choice between the two depends on the workload. Users requiring graphical output, ray tracing, or display connectivity should select the Radeon PRO W7400. Users needing maximum compute throughput, massive memory capacity, and high bandwidth without any display requirements should select the Instinct MI300. Neither product can substitute for the other based on the specifications recorded in the database.