AMD Instinct MI300 vs AMD Radeon AI PRO R9700 Comparison

The AMD Instinct MI300 and AMD Radeon AI PRO R9700 are both AMD accelerators, but they serve fundamentally different roles. The MI300 is a data center compute accelerator built on CDNA 3.0, while the R9700 is a workstation graphics card built on RDNA 4.0. The database contains benchmark data for the R9700, but the MI300 has no recorded benchmark scores, making direct numerical comparison impossible. However, the specification sheets reveal stark contrasts in architecture, memory, and intended workloads.

Where Each One Wins

The AMD Instinct MI300 is designed for compute-heavy, memory-bound workloads. Its 128 GB of HBM3 memory and 8192-bit bus width deliver 5.32 TB/s of bandwidth, a figure that dwarfs the R9700's 644.6 GB/s. This makes the MI300 suited for large-scale AI training, scientific simulation, and data processing tasks where capacity and bandwidth are the primary constraints. The MI300 also features a substantially larger transistor count at 153,000 million, indicating a much more complex silicon design aimed at raw parallel throughput.

The AMD Radeon AI PRO R9700 wins in terms of graphics and workstation features. It has 128 ROPs and a pixel rate of 373.8 GPixel/s, while the MI300 has zero ROPs and a pixel rate of 0 MPixel/s. The R9700 also includes 64 ray tracing cores, a feature entirely absent from the MI300. It supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, whereas the MI300 reports N/A for all three APIs. The R9700 has display outputs (1x HDMI 2.1b, 3x DisplayPort 2.1a), while the MI300 has no display outputs at all. The R9700 is clearly the choice for rendering, ray tracing, and interactive graphics workloads.

The R9700 has recorded benchmark data, achieving an average benchmark score of 23315 and sitting in the 69th percentile of all GPUs. Its nearest rivals include the AMD Radeon R9 M290X (0.2% faster), AMD Radeon RX 6600M (0.2% faster), AMD Radeon Pro Vega 16 (0.3% faster), and NVIDIA P106-100 (0.3% faster). These deltas are extremely small, indicating that the R9700 performs at a level very close to those older or lower-tier cards in the recorded tests. The MI300 has no benchmark entries, so its percentile is 50 with an average score of 0, placing it in an unverified position in the database.

Architecture Differences

The Instinct MI300 uses the CDNA 3.0 architecture, manufactured on a 5 nm process at TSMC. Its chip is called Aqua Vanjaram and measures 1017 mm², housing 153,000 million transistors. The transistor density is 150.4M per mm². This is a massive die designed for compute acceleration, with no graphics output pipeline. The MI300 has 14080 shading units and 880 TMUs, but zero ROPs. Its FP32 performance is 47.87 TFLOPS, and FP16 performance is also 47.87 TFLOPS at a 1:1 ratio.

The Radeon AI PRO R9700 uses the RDNA 4.0 architecture, manufactured on a 4 nm process at TSMC. Its chip is Navi 48 and measures 357 mm², containing 53,900 million transistors. The transistor density is 151.0M per mm², slightly higher than the MI300 despite the much smaller die. The R9700 has 4096 shading units, 256 TMUs, 128 ROPs, and 64 ray tracing cores. Its FP32 performance is 47.84 TFLOPS, and FP16 performance is also 47.84 TFLOPS at a 1:1 ratio. The FP32 figures for both cards are nearly identical, differing by only 0.03 TFLOPS.

The process node difference is notable: the R9700 uses a 4 nm process versus the MI300's 5 nm process. Despite this, the MI300 achieves similar transistor density (150.4M vs 151.0M per mm²) because of its much larger die area. The architectural philosophy differs sharply: CDNA 3.0 prioritizes memory bandwidth and compute density, while RDNA 4.0 prioritizes graphics features, ray tracing, and clock speeds.

Head-to-Head Benchmarks

The database provides no head-to-head benchmark results between the MI300 and the R9700. The MI300 has an empty benchmark array, while the R9700 has ten recorded tests. Without matching test data, the only numerical comparisons available come from the R9700's own benchmark scores and its nearest rivals.

The R9700's strongest recorded result is in Geekbench OpenCL, where it scores 118202. Its Vulkan score is 63550. In 3DMark Steel Nomad DX12, it scores 7006. PassMark results show a G3D score of 26979, a GPU compute score of 15300, a G2D score of 1236, and DirectX scores of 363 (DX9), 272 (DX11), 155 (DX10), and 83 (DX12). The low DirectX 12 PassMark score of 83 contrasts sharply with the 3DMark Steel Nomad DX12 score of 7006, suggesting different test methodologies or driver optimization levels.

The nearest rival data shows the R9700 is virtually tied with the AMD Radeon R9 M290X, which has an average score of 23276 versus the R9700's 23315, a delta of only 0.2%. The AMD Radeon RX 6600M scores 23273, also 0.2% behind. The AMD Radeon Pro Vega 16 scores 23250, 0.3% behind, and the NVIDIA P106-100 scores 23249, also 0.3% behind. These results indicate that in the recorded average benchmark, the R9700 performs within a narrow band of these established cards, neither decisively ahead nor behind.

Specification Differences

The most obvious difference is memory. The MI300 has 128 GB of HBM3 with an 8192-bit bus and 5.32 TB/s bandwidth. The R9700 has 32 GB of GDDR6 with a 256-bit bus and 644.6 GB/s bandwidth. The MI300 offers four times the capacity and over eight times the bandwidth.

Clock speeds diverge significantly. The MI300 has a base clock of 1000 MHz and a boost clock of 1700 MHz, with memory clocked at 1300 MHz (5.2 Gbps effective). The R9700 has a base clock of 1660 MHz, a boost clock of 2920 MHz, and a game clock of 2350 MHz. Its memory runs at 2518 MHz (20.1 Gbps effective). The R9700's higher clocks reflect its graphics-oriented design, while the MI300 relies on massive parallelism and memory bandwidth rather than clock speed.

Power and cooling requirements differ. The MI300 has a TDP of 600 W and uses 2x 8-pin power connectors, with a suggested PSU of 1000 W. The R9700 has a TDP of 300 W, uses 1x 16-pin power connector, and suggests a 700 W PSU. The R9700 is a dual-slot card with dimensions of 267 mm length, 111 mm height, and 40 mm width. The MI300 has the same length and height (267 mm and 111 mm) but no recorded width or slot width.

Compute resources show a stark contrast. The MI300 has 14080 shading units and 880 TMUs, but zero ROPs and no ray tracing cores. The R9700 has 4096 shading units, 256 TMUs, 128 ROPs, and 64 ray tracing cores. The MI300's texture rate is 1,496.0 GTexel/s versus the R9700's 747.5 GTexel/s. The MI300's pixel rate is 0 MPixel/s versus the R9700's 373.8 GPixel/s.

API support is another divider. The MI300 lists DirectX, OpenGL, and Vulkan as N/A. The R9700 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The R9700 also has display outputs; the MI300 has none. The R9700 was released on 2025-07-22 and is marked as Active in production status. The MI300 was released on 2023-01-03 and has no recorded production status. The R9700 has a launch MSRP of 1,299 USD.

FAQ

Q: Which GPU has more memory bandwidth?

A: The AMD Instinct MI300 has 5.32 TB/s of bandwidth, while the AMD Radeon AI PRO R9700 has 644.6 GB/s.

Q: Does the MI300 support ray tracing?

A: No, the MI300 has no ray tracing cores and reports N/A for DirectX, OpenGL, and Vulkan APIs. The R9700 has 64 ray tracing cores and supports DirectX 12 Ultimate.

Q: What is the FP32 performance difference between the two?

A: The MI300 delivers 47.87 TFLOPS FP32 performance, while the R9700 delivers 47.84 TFLOPS, a difference of only 0.03 TFLOPS.

Q: How does the R9700 compare to its nearest rivals in the database?

A: The R9700 has an average benchmark score of 23315. Its nearest rivals are the AMD Radeon R9 M290X (0.2% faster), AMD Radeon RX 6600M (0.2% faster), AMD Radeon Pro Vega 16 (0.3% faster), and NVIDIA P106-100 (0.3% faster).

Q: What are the power requirements for each card?

A: The MI300 has a TDP of 600 W with 2x 8-pin power connectors and a suggested PSU of 1000 W. The R9700 has a TDP of 300 W with 1x 16-pin power connector and a suggested PSU of 700 W.

Q: Which card has display outputs?

A: Only the R9700 has display outputs, offering 1x HDMI 2.1b and 3x DisplayPort 2.1a. The MI300 has no display outputs.

Q: What memory types do the two cards use?

A: The MI300 uses 128 GB of HBM3 with an 8192-bit bus. The R9700 uses 32 GB of GDDR6 with a 256-bit bus.