AMD Instinct MI300A vs AMD Radeon PRO W7800 Comparison

Where Each One Wins

The recorded data separates these two AMD accelerators into completely different performance classes. The AMD Instinct MI300A is a data center compute module with no display outputs, designed around CDNA 3.0 architecture. The AMD Radeon PRO W7800 is a workstation graphics card with RDNA 3.0 architecture, active production status, and a 97th percentile ranking against all GPUs in the database.

The MI300A holds structural advantages in nearly every compute resource category. It uses 14,592 shading units compared to 4,480 on the W7800, a 3.26x difference. Texture mapping units stand at 912 versus 280, a 3.26x difference. The MI300A has no ROPs (0 MPixel/s pixel rate), which means it is not designed for rasterization output. The W7800 has 128 ROPs and a 323.2 GPixel/s pixel rate, making it the only option between the two for traditional graphics rendering.

Memory capacity separates them clearly. The MI300A carries 128 GB of HBM3 on an 8192-bit bus, producing 5.32 TB/s of bandwidth. The W7800 has 32 GB of GDDR6 on a 256-bit bus, yielding 576.0 GB/s. The MI300A delivers 9.2x the memory bandwidth, which matters enormously for large data sets and matrix operations.

The W7800 wins on clock speeds. Its base clock of 1895 MHz and boost clock of 2525 MHz exceed the MI300A's 1000 MHz base and 2100 MHz boost. This helps the W7800 achieve 45.25 TFLOPS FP32 from far fewer shading units, while the MI300A reaches 61.29 TFLOPS FP32. The MI300A still leads raw FP32 throughput by 35.4%, but the W7800 extracts more per-shader performance.

The W7800 has benchmark data in the database. Its Geekbench OpenCL score is 154,366 and Geekbench Vulkan score is 175,422, with an average benchmark score of 164,894. The MI300A has no recorded benchmark scores and sits at the 50th percentile, indicating the database contains no verified performance measurements for it. The W7800's nearest rival, the NVIDIA RTX A5500, scores 165,217, which is 0.2% higher. The NVIDIA RTX 4500 Ada Generation scores 166,094, 0.7% higher. The AMD Radeon Pro W6900X scores 168,574, 2.2% higher. The NVIDIA A100 PCIe 40 GB scores 162,504, which is 1.5% lower than the W7800.

Architecture Differences

Both chips use a 5 nm TSMC process, but the similarities end there. The MI300A uses the Aqua Vanjaram chip with CDNA 3.0 architecture, while the W7800 uses Navi 31 with RDNA 3.0 architecture. The MI300A packs 153,000 million transistors on a 1017 mm² die, achieving a transistor density of 150.4M per mm². The W7800 has 57,700 million transistors on a 529 mm² die with a density of 109.1M per mm². The MI300A has 2.65x the transistor count and 1.92x the die area.

The MI300A belongs to the Instinct (MIx) generation with a predecessor of Radeon Instinct. The W7800 belongs to the Radeon Pro Navi (Navi III Series) generation with a predecessor of Radeon Pro Vega. Their release dates differ by about eight months: the W7800 launched April 12, 2023, and the MI300A launched December 5, 2023.

Interface and power delivery reflect their different deployment targets. The MI300A uses PCIe 5.0 x16 and an OAM Module slot width with no power connectors, requiring a suggested 1150 W power supply. The W7800 uses PCIe 4.0 x16, a dual-slot form factor, two 8-pin power connectors, and a suggested 600 W power supply. The MI300A has a 750 W TDP versus 260 W for the W7800.

The W7800 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300A reports N/A for DirectX, OpenGL, and Vulkan, confirming it is not a graphics API device. Display outputs reinforce this: the W7800 has 3x DisplayPort 2.1 and 1x mini-DisplayPort 2.1, while the MI300A has no outputs.

The W7800 has 70 ray tracing cores. The MI300A reports no RT cores in the database. The W7800 supports FP16 at 90.50 TFLOPS with a 2:1 ratio, while the MI300A has no recorded FP16 figure.

The Verdict

The data points to a clear division of purpose. The AMD Instinct MI300A is a compute accelerator with massive memory capacity, enormous bandwidth, and peak FP32 throughput. It has no display outputs and no graphics API support. The AMD Radeon PRO W7800 is a workstation GPU with rasterization capability, ray tracing cores, display outputs, and full graphics API support.

For users who need to process data sets that exceed 32 GB, the MI300A's 128 GB HBM3 pool with 5.32 TB/s bandwidth is the only choice between these two. For anyone who needs to render to a screen, the W7800 is the only functional option, since the MI300A cannot output video at all.

Benchmark results indicate the W7800 performs competitively against its nearest rivals. Its average score of 164,894 sits within 2.2% of the AMD Radeon Pro W6900X, within 0.7% of the NVIDIA RTX 4500 Ada Generation, and within 0.2% of the NVIDIA RTX A5500. It leads the NVIDIA A100 PCIe 40 GB by 1.5%. The MI300A has no benchmark scores in the database, so its real-world performance cannot be compared directly.

The W7800's 97th percentile ranking versus all GPUs indicates strong overall performance. The MI300A's 50th percentile reflects missing data rather than poor performance, but the database cannot confirm its standing.

FAQ

Q: Which card has more memory bandwidth?

A: The AMD Instinct MI300A has 5.32 TB/s from HBM3 on an 8192-bit bus, while the AMD Radeon PRO W7800 has 576.0 GB/s from GDDR6 on a 256-bit bus.

Q: Can the MI300A drive a display?

A: No. The MI300A has no display outputs and reports N/A for DirectX, OpenGL, and Vulkan support. The W7800 has 3x DisplayPort 2.1 and 1x mini-DisplayPort 2.1.

Q: How do their transistor counts compare?

A: The MI300A contains 153,000 million transistors on a 1017 mm² die. The W7800 contains 57,700 million transistors on a 529 mm² die. Both use a 5 nm TSMC process.

Q: What are the benchmark scores for the W7800?

A: The W7800 scores 154,366 in Geekbench OpenCL and 175,422 in Geekbench Vulkan, with an average benchmark score of 164,894. The MI300A has no recorded benchmark scores.

Q: What is the launch MSRP of the W7800?

A: The launch MSRP is 2,499 USD. The MI300A has no recorded launch MSRP.

Q: How does the W7800 compare to the NVIDIA RTX A5500?

A: The NVIDIA RTX A5500 scores 165,217, which is 0.2% higher than the W7800's average score of 164,894. This makes them effectively tied in the database's measurements.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark entries for these two products. The MI300A has no benchmarks at all, while the W7800 has two Geekbench results. This absence of direct comparison data means the performance relationship must be inferred from architectural specifications.

The largest measurable advantage for the MI300A is memory bandwidth. At 5.32 TB/s, it exceeds the W7800's 576.0 GB/s by a factor of 9.2. This bandwidth differential is decisive for workloads that stream large matrices or data sets through memory. The 128 GB capacity versus 32 GB also allows the MI300A to hold working sets that would spill to system memory on the W7800.

FP32 throughput favors the MI300A at 61.29 TFLOPS versus 45.25 TFLOPS, a 35.4% lead. Texture rate also favors the MI300A at 1,915.2 GTexel/s versus 707.0 GTexel/s, a 2.71x advantage. However, the W7800 wins on pixel throughput with 323.2 GPixel/s, since the MI300A has no ROPs and produces 0 MPixel/s.

The W7800 has higher clock speeds. Its 2525 MHz boost clock is 20.2% higher than the MI300A's 2100 MHz. Its base clock of 1895 MHz is 89.5% higher than the MI300A's 1000 MHz. These clocks allow the W7800 to deliver 45.25 TFLOPS from just 4,480 shading units, while the MI300A needs 14,592 shading units to reach 61.29 TFLOPS.

Ray tracing is exclusive to the W7800 with 70 RT cores. The MI300A has none. Graphics API support is exclusive to the W7800 as well. The MI300A reports N/A across DirectX, OpenGL, and Vulkan.

Power requirements differ substantially. The MI300A has a 750 W TDP and needs a suggested 1150 W power supply. The W7800 has a 260 W TDP and needs a suggested 600 W power supply. The MI300A uses an OAM Module slot with no power connectors, while the W7800 uses a dual-slot design with two 8-pin connectors.

Specification Differences

The two products differ in nearly every recorded specification category.

Chip and architecture: The MI300A uses Aqua Vanjaram with CDNA 3.0. The W7800 uses Navi 31 with RDNA 3.0 and the Plum Bonito codename.

Process and die: Both use 5 nm TSMC. The MI300A has 153,000 million transistors on a 1017 mm² die with 150.4M per mm² density. The W7800 has 57,700 million transistors on a 529 mm² die with 109.1M per mm² density.

Clocks: The MI300A runs at 1000 MHz base and 2100 MHz boost. The W7800 runs at 1895 MHz base and 2525 MHz boost. Memory clocks are 1300 MHz (5.2 Gbps effective) for the MI300A and 2250 MHz (18 Gbps effective) for the W7800.

Memory: The MI300A has 128 GB HBM3 on an 8192-bit bus with 5.32 TB/s bandwidth. The W7800 has 32 GB GDDR6 on a 256-bit bus with 576.0 GB/s bandwidth.

Compute units: The MI300A has 14,592 shading units, 912 TMUs, and 0 ROPs. The W7800 has 4,480 shading units, 280 TMUs, and 128 ROPs. The MI300A has no RT cores; the W7800 has 70.

Rates: The MI300A has a 0 MPixel/s pixel rate and 1,915.2 GTexel/s texture rate. The W7800 has a 323.2 GPixel/s pixel rate and 707.0 GTexel/s texture rate. FP32 is 61.29 TFLOPS for the MI300A and 45.25 TFLOPS for the W7800. The MI300A has no recorded FP16 figure; the W7800 has 90.50 TFLOPS FP16 (2:1).

Power and cooling: The MI300A has a 750 W TDP, OAM Module slot width, no power connectors, and a suggested 1150 W PSU. The W7800 has a 260 W TDP, dual-slot width, 2x 8-pin connectors, and a suggested 600 W PSU.

Interface and outputs: The MI300A uses PCIe 5.0 x16 and has no display outputs. The W7800 uses PCIe 4.0 x16 and has 3x DisplayPort 2.1 plus 1x mini-DisplayPort 2.1.

API support: The MI300A reports N/A for DirectX, OpenGL, and Vulkan. The W7800 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Physical dimensions: The MI300A has no recorded dimensions. The W7800 measures 280 mm (11 inches) in length, 110 mm (4.3 inches) in height, and 40 mm (1.6 inches) in width.

Release and status: The MI300A released December 5, 2023, with no production status recorded. The W7800 released April 12, 2023, and is marked Active. The MI300A's predecessor is Radeon Instinct; the W7800's predecessor is Radeon Pro Vega.