AMD Instinct MI350X vs NVIDIA GeForce RTX 5090 Comparison

FAQ

Q: What is the average benchmark score for the NVIDIA GeForce RTX 5090?

A: The RTX 5090 has an average benchmark score of 79,842, placing it in the 92nd percentile of all GPUs in the database.

Q: How does the RTX 5090 compare to its nearest rival, the NVIDIA Tesla P100 PCIe 16 GB?

A: The RTX 5090 is 0.3% ahead of the Tesla P100 PCIe 16 GB in average benchmark score, a very close margin.

Q: What memory configuration does the AMD Instinct MI350X use?

A: The MI350X uses 288 GB of HBM3e memory on an 8192-bit bus, delivering 8.19 TB/s of bandwidth.

Q: What is the FP32 compute capability of each card?

A: The MI350X delivers 72.09 TFLOPS FP32, while the RTX 5090 delivers 104.8 TFLOPS FP32.

Q: What is the launch MSRP of the RTX 5090?

A: The launch MSRP of the RTX 5090 is 1,999 USD.

Q: What is the thermal design power for each product?

A: The MI350X has a TDP of 1000 W with a suggested PSU of 1400 W, while the RTX 5090 has a TDP of 575 W with a suggested PSU of 950 W.

Architecture Differences

The AMD Instinct MI350X and NVIDIA GeForce RTX 5090 represent two fundamentally different design philosophies. The MI350X is built on CDNA 4.0 architecture, fabricated on a 3 nm process at TSMC. The die contains 185,000 million transistors across a massive 2380 mm² area, yielding a transistor density of 77.7M per mm². This is a compute-oriented accelerator with no display outputs and no graphics API support, as DirectX, OpenGL, and Vulkan are all listed as N/A.

The RTX 5090 uses Blackwell 2.0 architecture on a 5 nm process, also from TSMC. Its die measures 750 mm² and contains 92,200 million transistors, giving it a higher transistor density of 122.9M per mm². Unlike the MI350X, the RTX 5090 is a fully featured graphics card with DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 support, plus display outputs including 1x HDMI 2.1b and 3x DisplayPort 2.1b.

The MI350X is built around a 256CU configuration with 16,384 shading units and 1,024 TMUs. It has no ROPs, no RT cores, and no tensor cores listed, reflecting its pure compute focus. The RTX 5090 has 21,760 shading units, 680 TMUs, 176 ROPs, 170 RT cores, and 680 tensor cores, making it a far more complete rendering solution.

Memory architectures differ sharply. The MI350X uses 288 GB of HBM3e on an 8192-bit bus, achieving 8.19 TB/s bandwidth. The RTX 5090 uses 32 GB of GDDR7 on a 512-bit bus, delivering 1.79 TB/s. The MI350X has no pixel rate, while the RTX 5090 renders at 423.6 GPixel/s.

Physical design separates the two as well. The MI350X is an OAM module measuring 102 mm by 165 mm with no power connectors and no display outputs. The RTX 5090 is a dual-slot card with a 1x 16-pin power connector, dimensions of 304 mm by 137 mm by 40 mm, and a full complement of display outputs.

The Verdict

The recorded data separates these two products into distinct roles with little overlap. The MI350X is a 1000 W accelerator with 288 GB of HBM3e memory and 8.19 TB/s of bandwidth, designed for memory-bound compute workloads where capacity and bandwidth dominate. The RTX 5090 is a 575 W consumer graphics card with 32 GB of GDDR7, 104.8 TFLOPS FP32, and full graphics API support, placing it in the 92nd percentile of all GPUs.

The MI350X has no benchmark entries in the database and its percentile sits at 50 with an average score of zero, so its compute performance cannot be compared directly to the RTX 5090's measured results. The RTX 5090 has substantial benchmark data, including a 3DMark Steel Nomad DX12 score of 18,355, a Geekbench OpenCL score of 334,370, and a Geekbench Vulkan score of 376,728.

The choice between them depends entirely on the workload. The MI350X offers vastly more memory capacity and bandwidth, nearly five times the VRAM of the RTX 5090 and over four times the bandwidth. The RTX 5090 offers higher raw FP32 throughput, full rendering capabilities, and a conventional graphics card form factor.

The RTX 5090 has a production status of Active and a successor listed as GeForce 60. The MI350X has no production status listed, no successor, and its predecessor is listed as Radeon Instinct. The RTX 5090 is the only one of the two with benchmark scores, making it the only one whose performance can be verified against the database's GPU population.

Specification Differences

The two products differ across nearly every specification field in the database. The MI350X uses a 3 nm process, the RTX 5090 uses 5 nm. Transistor counts are 185,000 million versus 92,200 million. Die size is 2380 mm² versus 750 mm². Transistor density favors the RTX 5090 at 122.9M per mm² against 77.7M per mm².

Clock speeds differ substantially. The MI350X runs at 1000 MHz base and 2200 MHz boost. The RTX 5090 runs at 2017 MHz base and 2407 MHz boost. Memory clocks also differ: the MI350X uses 2000 MHz with 8 Gbps effective, while the RTX 5090 uses 1750 MHz with 28 Gbps effective.

Memory capacity favors the MI350X at 288 GB versus 32 GB. Memory type differs completely: HBM3e versus GDDR7. Bus width is 8192 bit versus 512 bit. Bandwidth is 8.19 TB/s versus 1.79 TB/s.

Shading units favor the RTX 5090 at 21,760 versus 16,384. TMUs favor the MI350X at 1,024 versus 680. The MI350X has zero ROPs, the RTX 5090 has 176. The MI350X has no RT cores or tensor cores listed, while the RTX 5090 has 170 RT cores and 680 tensor cores.

Pixel rate is 0 MPixel/s for the MI350X and 423.6 GPixel/s for the RTX 5090. Texture rate favors the MI350X at 2,252.8 GTexel/s versus 1,636.8 GTexel/s. FP32 output favors the RTX 5090 at 104.8 TFLOPS versus 72.09 TFLOPS. Both deliver FP16 at a 1:1 ratio with their FP32 figures.

TDP differs by a wide margin: 1000 W for the MI350X, 575 W for the RTX 5090. Suggested PSU is 1400 W versus 950 W. Slot width is OAM Module versus dual-slot. Power connectors are none versus 1x 16-pin. The MI350X has no display outputs; the RTX 5090 has 1x HDMI 2.1b and 3x DisplayPort 2.1b.

API support exists only on the RTX 5090: DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. The MI350X lists N/A for all three. Physical dimensions differ: the MI350X is 102 mm by 165 mm, the RTX 5090 is 304 mm by 137 mm by 40 mm.

Release dates differ by several months. The RTX 5090 launched on 2025-01-29, the MI350X on 2025-06-11. The RTX 5090 has a launch MSRP of 1,999 USD, while the MI350X has no launch MSRP listed.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark entries between the MI350X and RTX 5090, and the MI350X has no individual benchmark scores recorded. The comparison must therefore lean on the RTX 5090's measured results and the specification-level differences between the two cards.

The RTX 5090 posts an average benchmark score of 79,842, which places it in the 92nd percentile of all GPUs. Its nearest rivals in the database are the NVIDIA Tesla P100 PCIe 16 GB at 79,605 (0.3% behind), the NVIDIA Tesla P100 PCIe 12 GB at 79,396 (0.6% behind), and the AMD Radeon RX 6850M XT at 78,940 (1.1% behind). The AMD Radeon Pro Vega 64X sits 1.4% ahead at 80,959.

In synthetic workloads, the RTX 5090 delivers a 3DMark Steel Nomad DX12 score of 18,355. Its Geekbench OpenCL result is 334,370, and its Geekbench Vulkan result is 376,728. The PassMark suite shows a G3D score of 39,650, a GPU compute score of 26,756, and a G2D score of 1,413. DirectX-specific PassMark tests return 226 for DX10, 341 for DX11, 185 for DX12, and 395 for DX9.

The MI350X's strongest advantages are structural. Its 288 GB memory capacity is nine times the RTX 5090's 32 GB. Its 8.19 TB/s bandwidth is roughly 4.6 times the RTX 5090's 1.79 TB/s. Its texture rate of 2,252.8 GTexel/s exceeds the RTX 5090's 1,636.8 GTexel/s by about 37.6%.

The RTX 5090 counters with a 45.4% advantage in FP32 compute: 104.8 TFLOPS versus 72.09 TFLOPS. Its 423.6 GPixel/s pixel rate stands against the MI350X's 0 MPixel/s. The RTX 5090 also holds the clock speed advantage, with a 2017 MHz base and 2407 MHz boost versus 1000 MHz and 2200 MHz for the MI350X.

The data indicates the RTX 5090 is the only one of the two with validated performance results in the database. The MI350X appears as a specification-only entry with no benchmarks, no rivals, and no measured scores. Any performance assessment of the MI350X must be inferred from its specifications alone, while the RTX 5090's position in the 92nd percentile gives it a verified baseline against the broader GPU population.