AMD Instinct MI308X vs AMD Radeon PRO W7700 Comparison

# FAQ

Q: What is the fundamental architectural difference between the AMD Instinct MI308X and the AMD Radeon PRO W7700?

A: The AMD Instinct MI308X uses the CDNA 3.0 architecture with the Aqua Vanjaram chip, while the AMD Radeon PRO W7700 uses the RDNA 3.0 architecture with the Navi 32 chip. CDNA 3.0 is designed for compute-intensive workloads, whereas RDNA 3.0 is optimized for graphics and rendering tasks.

Q: How do the memory configurations compare between these two GPUs?

A: The AMD Instinct MI308X features 192 GB of HBM3 memory on an 8192-bit bus with 5.32 TB/s bandwidth. The AMD Radeon PRO W7700 has 16 GB of GDDR6 memory on a 256-bit bus with 576.0 GB/s bandwidth. The MI308X offers substantially more memory capacity and bandwidth.

Q: What are the shading unit counts for each GPU?

A: The AMD Instinct MI308X has 19,456 shading units, while the AMD Radeon PRO W7700 has 3,072 shading units. The MI308X also has 1,216 texture mapping units compared to 192 on the W7700.

Q: What is the power consumption difference between the two cards?

A: The AMD Instinct MI308X has a TDP of 750 W with a suggested PSU of 1150 W, while the AMD Radeon PRO W7700 has a TDP of 190 W with a suggested PSU of 450 W. The MI308X consumes significantly more power.

Q: Which GPU supports display outputs?

A: The AMD Radeon PRO W7700 supports 4x DisplayPort 2.1 outputs. The AMD Instinct MI308X has no display outputs, as it is designed for compute acceleration rather than graphics display.

Q: What benchmark scores are recorded for the AMD Radeon PRO W7700?

A: The AMD Radeon PRO W7700 records a Geekbench OpenCL score of 108,245 and a Geekbench Vulkan score of 129,706, with an average benchmark score of 118,976. No benchmark scores are recorded for the AMD Instinct MI308X.

Architecture Differences

The AMD Instinct MI308X and the AMD Radeon PRO W7700 represent two distinct architectural lineages from the same manufacturer. The MI308X employs the CDNA 3.0 architecture built on the Aqua Vanjaram chip, which is specifically engineered for data center compute workloads such as machine learning, scientific simulation, and high-performance computing. The W7700 employs the RDNA 3.0 architecture with the Navi 32 chip, which is designed for professional graphics workstations, including CAD, 3D modeling, and content creation.

The process node for both GPUs is 5 nm at TSMC, but the transistor counts differ dramatically. The MI308X integrates 153,000 million transistors on a 1017 mm² die, yielding a transistor density of 150.4M per mm². The W7700 integrates 28,100 million transistors on a 346 mm² die, yielding a transistor density of 81.2M per mm². This means the MI308X packs more than five times the transistors of the W7700.

Memory architecture represents a fundamental divide. The MI308X uses HBM3 memory with a 8192-bit bus width and 5.32 TB/s bandwidth. The W7700 uses GDDR6 memory with a 256-bit bus width and 576.0 GB/s bandwidth. HBM3 provides much higher bandwidth and capacity for massive datasets, while GDDR6 offers a more conventional memory subsystem for graphics workloads.

The MI308X lacks display outputs entirely, while the W7700 provides 4x DisplayPort 2.1 outputs. The MI308X also has no API support for DirectX, OpenGL, or Vulkan, whereas the W7700 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI308X is a compute-only accelerator with a PCIe 5.0 x16 interface, while the W7700 uses PCIe 4.0 x16.

The MI308X has a base clock of 1000 MHz and a boost clock of 2100 MHz with memory clocked at 1300 MHz (5.2 Gbps effective). The W7700 has a base clock of 1900 MHz and a boost clock of 2600 MHz with memory clocked at 2250 MHz (18 Gbps effective). Despite lower clock speeds, the MI308X compensates with its massive shading unit count.

Head-to-Head Benchmarks

Direct head-to-head benchmark data between the AMD Instinct MI308X and the AMD Radeon PRO W7700 is not available in the database. However, the W7700 has recorded benchmark scores that can be compared against its nearest rivals, which provides context for its performance positioning.

The AMD Radeon PRO W7700 achieves an average benchmark score of 118,976, placing it in the 95th percentile of all GPUs. Its nearest rival, the NVIDIA GB10, scores 117,393, which is 1.3% lower. The NVIDIA RTX 4000 SFF Ada Generation scores 117,088, which is 1.6% lower. The NVIDIA Tesla V100 SXM2 16 GB scores 114,395, which is 4% lower. The NVIDIA RTX A5500 Mobile scores 113,944, which is 4.4% lower. These data points indicate the W7700 leads its immediate competitive set by a narrow margin.

In the Geekbench OpenCL test, the W7700 records 108,245 points. In the Geekbench Vulkan test, the W7700 records 129,706 points. The Vulkan score is notably higher than the OpenCL score, suggesting the RDNA 3.0 architecture delivers strong graphics API performance. The MI308X has no recorded benchmark scores in the database, and its percentile ranking is 50 with an average benchmark score of 0.

The wins tally shows zero wins for the MI308X and zero wins for the W7700 in head-to-head comparisons, reflecting the absence of direct benchmark data. The MI308X's 50th percentile ranking is derived from its specifications rather than measured performance, as the database contains no benchmark results for this accelerator.

Specification Differences

The following specifications differ between the AMD Instinct MI308X and the AMD Radeon PRO W7700:

Chip and Architecture: The MI308X uses the Aqua Vanjaram chip with CDNA 3.0 architecture. The W7700 uses the Navi 32 chip with RDNA 3.0 architecture and the codename Wheat Nas.

Transistors: The MI308X has 153,000 million transistors. The W7700 has 28,100 million transistors.

Die Size: The MI308X has a die size of 1017 mm². The W7700 has a die size of 346 mm².

Transistor Density: The MI308X has 150.4M transistors per mm². The W7700 has 81.2M transistors per mm².

Clocks: The MI308X has a base clock of 1000 MHz and a boost clock of 2100 MHz. The W7700 has a base clock of 1900 MHz and a boost clock of 2600 MHz.

Memory: The MI308X has 192 GB of HBM3 memory with a 8192-bit bus and 5.32 TB/s bandwidth. The W7700 has 16 GB of GDDR6 memory with a 256-bit bus and 576.0 GB/s bandwidth.

Memory Clock: The MI308X memory runs at 1300 MHz (5.2 Gbps effective). The W7700 memory runs at 2250 MHz (18 Gbps effective).

Shading Units: The MI308X has 19,456 shading units. The W7700 has 3,072 shading units.

TMUs: The MI308X has 1,216 texture mapping units. The W7700 has 192.

ROPs: The MI308X has 0 raster output units. The W7700 has 96.

Ray Tracing Cores: The MI308X has no ray tracing cores. The W7700 has 48.

Pixel Rate: The MI308X has a pixel rate of 0 MPixel/s. The W7700 has a pixel rate of 249.6 GPixel/s.

Texture Rate: The MI308X has a texture rate of 2,553.6 GTexel/s. The W7700 has a texture rate of 499.2 GTexel/s.

FP32 Performance: The MI308X delivers 81.72 TFLOPS. The W7700 delivers 31.95 TFLOPS.

FP16 Performance: The MI308X delivers 81.72 TFLOPS (1:1 ratio). The W7700 delivers 63.90 TFLOPS (2:1 ratio).

TDP: The MI308X has a TDP of 750 W. The W7700 has a TDP of 190 W.

Slot Width: The MI308X is an OAM Module. The W7700 is a Dual-slot card.

Power Connectors: The MI308X has no power connectors. The W7700 has 1x 8-pin.

Suggested PSU: The MI308X suggests 1150 W. The W7700 suggests 450 W.

Bus Interface: The MI308X uses PCIe 5.0 x16. The W7700 uses PCIe 4.0 x16.

Display Outputs: The MI308X has no outputs. The W7700 has 4x DisplayPort 2.1.

APIs: The MI308X supports no DirectX, OpenGL, or Vulkan. The W7700 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Dimensions: The MI308X has no recorded dimensions. The W7700 measures 241 mm (9.5 inches) in length and 111 mm (4.4 inches) in height.

Release Date: The MI308X was released on 2023-12-05. The W7700 was released on 2023-11-12.

Predecessor: The MI308X's predecessor is Radeon Instinct. The W7700's predecessor is Radeon Pro Vega.

Launch MSRP: The W7700 has a launch MSRP of 999 USD. The MI308X has no launch MSRP recorded.

Where Each One Wins

The AMD Instinct MI308X wins in compute throughput scenarios. Its 19,456 shading units and 81.72 TFLOPS FP32 performance give it a substantial advantage for parallel compute workloads. The 192 GB HBM3 memory with 5.32 TB/s bandwidth enables processing of extremely large datasets that would not fit in the W7700's 16 GB GDDR6 memory. The 1:1 FP16 ratio means the MI308X maintains full throughput for half-precision workloads, which is critical for AI training and inference. The 2,553.6 GTexel/s texture rate also indicates strong texture processing capability for compute tasks.

The AMD Radeon PRO W7700 wins in graphics and display scenarios. Its 96 ROPs and 249.6 GPixel/s pixel rate enable rasterization for professional visualization. The 48 ray tracing cores provide hardware acceleration for ray-traced rendering. The 4x DisplayPort 2.1 outputs allow multi-display workstation setups. The W7700 supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, making it compatible with professional graphics software. Its 190 W TDP makes it suitable for standard workstation power budgets, while the MI308X requires 750 W and a 1150 W suggested PSU.

The W7700 also wins in measured benchmark performance, with an average score of 118,976 and a 95th percentile ranking. The MI308X has no measured benchmark scores and sits at the 50th percentile, indicating the database treats its performance as unverified. The W7700 leads its nearest rivals, the NVIDIA GB10 by 1.3%, the NVIDIA RTX 4000 SFF Ada Generation by 1.6%, the NVIDIA Tesla V100 SXM2 16 GB by 4%, and the NVIDIA RTX A5500 Mobile by 4.4%.

The MI308X wins on raw specification density. Its 153,000 million transistors on a 1017 mm² die represent a flagship-scale silicon investment. The 8192-bit memory bus is unmatched by the W7700's 256-bit bus. The 5.32 TB/s bandwidth dwarfs the 576.0 GB/s of the W7700. These specifications point to a purpose-built compute accelerator rather than a general-purpose graphics card.

The Verdict

The AMD Instinct MI308X and the AMD Radeon PRO W7700 serve fundamentally different purposes. The data shows the MI308X is a data center compute accelerator with no display outputs, no graphics API support, and an OAM Module form factor. Its 192 GB HBM3 memory, 81.72 TFLOPS FP32, and 750 W TDP position it for large-scale compute deployments. The W7700 is a professional workstation GPU with 4x DisplayPort 2.1, full graphics API support, and a 190 W TDP.

The recorded benchmark data favors the W7700, which achieves an average score of 118,976 and ranks in the 95th percentile. The MI308X has no recorded benchmark scores. The W7700's nearest rival data shows it outperforms the NVIDIA GB10 by 1.3%, the NVIDIA RTX 4000 SFF Ada Generation by 1.6%, the NVIDIA Tesla V100 SXM2 16 GB by 4%, and the NVIDIA RTX A5500 Mobile by 4.4%.

The MI308X should be selected for compute-focused deployments where massive memory capacity and raw FP32 throughput matter more than graphics capabilities. The W7700 should be selected for professional graphics workstations where display outputs, ray tracing, and software API compatibility are required. The specification differences confirm this split: the MI308X trades graphics features for compute density, while the W7700 balances compute with visualization functionality. The absence of direct head-to-head benchmarks means the verdict rests on architectural intent and specification analysis rather than measured comparisons.