AMD Instinct MI308X vs NVIDIA RTX PRO 2000 Blackwell Comparison

The AMD Instinct MI308X and NVIDIA RTX PRO 2000 Blackwell sit at opposite ends of the GPU spectrum, one designed for massive parallel compute in data centers, the other for professional workstation tasks. The database shows a stark contrast in every measurable category, from memory capacity to power draw, yet the RTX PRO 2000 Blackwell is the only one with recorded benchmark scores. The MI308X has no benchmark entries, an average score of zero, and a percentile rank of 50, while the RTX PRO 2000 Blackwell holds a percentile rank of 70 and an average score of 25,269 across ten tests. This analysis compares the two using the recorded data, focusing on the RTX PRO 2000 Blackwell’s measurable performance and the MI308X’s architectural specifications.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results between the AMD Instinct MI308X and the NVIDIA RTX PRO 2000 Blackwell. The MI308X has an empty benchmark array, meaning no scores from any test suite were recorded. The RTX PRO 2000 Blackwell, however, has ten benchmark entries. Its strongest showing comes from Geekbench Vulkan, where it scored 113,865. The Geekbench OpenCL result is slightly lower at 106,087. These two scores indicate the GPU’s compute capabilities under different API environments, with Vulkan outperforming OpenCL by roughly 7%.

In the Passmark suite, the RTX PRO 2000 Blackwell delivers a G3D score of 20,049 and a GPU compute score of 8,396. The G2D score stands at 1,303, which reflects 2D graphics performance. DirectX tests show a mixed picture: DirectX 9 scores 241, DirectX 11 scores 174, DirectX 10 scores 122, and DirectX 12 scores 80. The 3DMark Steel Nomad DX12 test records a score of 2,374.5. These numbers reveal that the RTX PRO 2000 Blackwell is not optimized for legacy DirectX workloads, with DirectX 12 scoring the lowest among all DirectX versions.

The MI308X cannot be compared directly because it has no recorded scores. Its average benchmark score is zero, which places it at the 50th percentile among all GPUs in the database. The RTX PRO 2000 Blackwell, with an average score of 25,269, sits at the 70th percentile. The nearest rivals for the RTX PRO 2000 Blackwell include the AMD Radeon RX 6700M with an average score of 25,633, a delta of -1.4%, and the AMD Radeon Pro W5700 with 25,726, a delta of -1.8%. The NVIDIA GeForce RTX 3080 Ti Mobile scores 25,740, a delta of -1.8%, while the NVIDIA RTX A5000 Mobile scores 24,763, a delta of +2%. These deltas show the RTX PRO 2000 Blackwell trailing the first three rivals by small margins and leading the RTX A5000 Mobile by two percent.

Where Each One Wins

The NVIDIA RTX PRO 2000 Blackwell wins in every category where data exists. Its benchmark scores cover graphics, compute, and API-specific tests, and the database records them all. The MI308X, by contrast, has no wins because no benchmark data exists for it. The RTX PRO 2000 Blackwell’s highest relative performance appears in Geekbench Vulkan, where the 113,865 score exceeds its OpenCL result. This suggests the GPU handles Vulkan compute workloads more efficiently than OpenCL.

The MI308X wins in pure hardware specifications. It has 19,456 shading units, 1,216 texture mapping units, and a texture rate of 2,553.6 GTexel/s. The RTX PRO 2000 Blackwell has 4,352 shading units, 136 TMUs, and a texture rate of 266.2 GTexel/s. The MI308X’s FP32 throughput is 81.72 TFLOPS, while the RTX PRO 2000 Blackwell delivers 17.03 TFLOPS. Both GPUs have an FP16 rate identical to their FP32 rate at a 1:1 ratio, which means the MI308X’s FP16 is also 81.72 TFLOPS and the RTX PRO 2000 Blackwell’s is 17.03 TFLOPS. The MI308X does not support DirectX, OpenGL, or Vulkan APIs, so it cannot run the same tests as the RTX PRO 2000 Blackwell, which supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4.

Memory is another clear differentiator. The MI308X has 192 GB of HBM3 memory with an 8192-bit bus and 5.32 TB/s bandwidth. The RTX PRO 2000 Blackwell has 16 GB of GDDR7 memory with a 128-bit bus and 288.0 GB/s bandwidth. The MI308X’s memory bandwidth is over 18 times higher than the RTX PRO 2000 Blackwell’s, but the RTX PRO 2000 Blackwell has a functional memory subsystem with a recorded pixel rate of 93.94 GPixel/s. The MI308X has a pixel rate of 0 MPixel/s because it has no ROPs, meaning it cannot output pixels to a display.

Architecture Differences

The MI308X uses the Aqua Vanjaram chip based on CDNA 3.0 architecture, fabricated on a 5 nm process at TSMC. It contains 153,000 million transistors on a die size of 1,017 mm², yielding a transistor density of 150.4 million per mm². The RTX PRO 2000 Blackwell uses the GB206 chip based on Blackwell 2.0 architecture, also on a 5 nm process at TSMC. It has 21,900 million transistors on a die size of 181 mm², yielding a density of 121.0 million per mm². The MI308X has roughly seven times the transistor count and a die over five times larger.

The MI308X’s CDNA 3.0 architecture is compute-focused. It has no RT cores, no tensor cores, and no ROPs, and it lacks display outputs. The RTX PRO 2000 Blackwell’s Blackwell 2.0 architecture includes 34 RT cores and 136 tensor cores, plus 48 ROPs. It has four mini-DisplayPort 2.1b outputs. The MI308X operates as an OAM module with no power connectors, while the RTX PRO 2000 Blackwell is a dual-slot card with no power connectors either. The MI308X has a TDP of 750 W and a suggested PSU of 1,150 W, while the RTX PRO 2000 Blackwell has a TDP of 70 W and a suggested PSU of 250 W. The MI308X uses a PCIe 5.0 x16 interface, while the RTX PRO 2000 Blackwell uses PCIe 5.0 x8.

Clock speeds differ slightly. The MI308X has a base clock of 1,000 MHz and a boost clock of 2,100 MHz, with memory clocked at 1,300 MHz (5.2 Gbps effective). The RTX PRO 2000 Blackwell has a base clock of 982 MHz and a boost clock of 1,957 MHz, with memory clocked at 1,125 MHz (18 Gbps effective). The MI308X’s memory effective speed is lower, but its bus width of 8,192 bits versus 128 bits explains the massive bandwidth difference. The RTX PRO 2000 Blackwell’s GDDR7 memory runs at a higher effective speed per pin, but the narrow bus limits total bandwidth.

FAQ

Q: Which GPU has more shading units?

A: The AMD Instinct MI308X has 19,456 shading units, while the NVIDIA RTX PRO 2000 Blackwell has 4,352 shading units.

Q: Does the MI308X support DirectX?

A: No. The database lists DirectX as N/A for the MI308X. The RTX PRO 2000 Blackwell supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: What is the memory bandwidth of each GPU?

A: The MI308X has a bandwidth of 5.32 TB/s using HBM3 memory with an 8192-bit bus. The RTX PRO 2000 Blackwell has a bandwidth of 288.0 GB/s using GDDR7 memory with a 128-bit bus.

Q: Which GPU has a higher benchmark percentile?

A: The RTX PRO 2000 Blackwell has a percentile rank of 70, while the MI308X has a percentile rank of 50. The MI308X has no recorded benchmark scores, so its percentile is based on an average score of zero.

Q: What are the power requirements?

A: The MI308X has a TDP of 750 W and a suggested PSU of 1,150 W. The RTX PRO 2000 Blackwell has a TDP of 70 W and a suggested PSU of 250 W. Neither has power connectors listed.

Q: How does the RTX PRO 2000 Blackwell compare to its nearest rivals?

A: The RTX PRO 2000 Blackwell has an average score of 25,269. The AMD Radeon RX 6700M scores 25,633 (1.4% higher), the AMD Radeon Pro W5700 scores 25,726 (1.8% higher), the NVIDIA GeForce RTX 3080 Ti Mobile scores 25,740 (1.8% higher), and the NVIDIA RTX A5000 Mobile scores 24,763 (2% lower).

Specification Differences

The two GPUs differ in nearly every field. The MI308X uses CDNA 3.0 architecture with the Aqua Vanjaram chip, while the RTX PRO 2000 Blackwell uses Blackwell 2.0 with the GB206 chip. The MI308X has 153,000 million transistors and a 1,017 mm² die, versus 21,900 million transistors and a 181 mm² die for the RTX PRO 2000 Blackwell. Transistor density is 150.4M per mm² for the MI308X and 121.0M per mm² for the RTX PRO 2000 Blackwell.

Memory capacity is 192 GB HBM3 versus 16 GB GDDR7. Bus width is 8,192 bits versus 128 bits. Bandwidth is 5.32 TB/s versus 288.0 GB/s. The MI308X has 19,456 shading units, 1,216 TMUs, and zero ROPs, while the RTX PRO 2000 Blackwell has 4,352 shading units, 136 TMUs, and 48 ROPs. The MI308X has no RT or tensor cores, while the RTX PRO 2000 Blackwell has 34 RT cores and 136 tensor cores.

Pixel rate is 0 MPixel/s for the MI308X and 93.94 GPixel/s for the RTX PRO 2000 Blackwell. Texture rate is 2,553.6 GTexel/s versus 266.2 GTexel/s. FP32 and FP16 are both 81.72 TFLOPS for the MI308X and 17.03 TFLOPS for the RTX PRO 2000 Blackwell. TDP is 750 W versus 70 W, with suggested PSUs of 1,150 W and 250 W. Slot width is OAM module versus dual-slot. Bus interface is PCIe 5.0 x16 versus PCIe 5.0 x8. Display outputs are none versus four mini-DisplayPort 2.1b. The MI308X has no supported APIs, while the RTX PRO 2000 Blackwell supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. Release dates are December 5, 2023 for the MI308X and August 10, 2025 for the RTX PRO 2000 Blackwell. Production status is not listed for the MI308X but is Active for the RTX PRO 2000 Blackwell.

The Verdict

The database presents two products with no overlapping benchmark results. The NVIDIA RTX PRO 2000 Blackwell has a complete set of measurements, an average score of 25,269, and a 70th percentile rank. Its nearest rival, the NVIDIA RTX A5000 Mobile, trails by 2%, while the AMD Radeon RX 6700M leads by 1.4%. These numbers place the RTX PRO 2000 Blackwell in a competitive mid-range position among recorded GPUs.

The AMD Instinct MI308X has no benchmarks, an average score of zero, and a 50th percentile rank. Its specifications point toward a high-end compute accelerator, with 192 GB of memory, 5.32 TB/s bandwidth, and 81.72 TFLOPS FP32, but the absence of recorded scores means the database cannot verify its performance. The RTX PRO 2000 Blackwell, by contrast, has verified scores and API support, making it the only one of the two with measurable graphics capability.

Users requiring a GPU with display outputs, DirectX support, and a low power envelope should consider the RTX PRO 2000 Blackwell. Users requiring massive memory capacity and compute throughput, based on specifications alone, would look at the MI308X, but no benchmark data exists to confirm its behavior. The data indicates the RTX PRO 2000 Blackwell is the more complete product in terms of measured results, while the MI308X remains an unverified specification sheet.