AMD Instinct MI455X vs NVIDIA GeForce RTX 5090 D V2 Comparison

Head-to-Head Benchmarks

The recorded data presents an unusual comparison: the AMD Instinct MI455X has no benchmark entries in the database, while the NVIDIA GeForce RTX 5090 D V2 has a single 3DMark Steel Nomad DX12 score of 16504. With zero head-to-head benchmark results available, the two products cannot be directly compared through measured performance data. The MI455X carries an average benchmark score of 0 and a percentile ranking of 50 among all GPUs, while the RTX 5090 D V2 posts a percentile of 59.

The RTX 5090 D V2's nearest rivals in the database provide context for its single score. The NVIDIA T400 sits at 16508, essentially identical with a delta of 0%. The AMD Radeon PRO W7500 scores 16415, trailing by 0.5%. The NVIDIA RTX PRO 6000 Blackwell records 16408, a 0.6% gap, and the AMD Radeon RX 5700 XT reaches 16361, 0.9% behind. These deltas are remarkably tight, indicating the RTX 5090 D V2's benchmark result places it in a cluster where performance differences are minimal.

The MI455X, by contrast, presents no comparable scores. Its percentile of 50 reflects a midpoint position in the database distribution, but without any recorded benchmark outputs, this ranking carries no performance validation. The wins tally shows zero for both products in head-to-head comparisons, confirming the absence of direct test data. Any assessment of relative speed must rely entirely on architectural specifications rather than empirical measurements.

FAQ

Q: What benchmark scores are available for the AMD Instinct MI455X?

A: The database contains no benchmark entries for the MI455X. Its average benchmark score is 0, and its percentile ranking among all GPUs is 50.

Q: What is the recorded 3DMark Steel Nomad DX12 score for the NVIDIA GeForce RTX 5090 D V2?

A: The RTX 5090 D V2 scores 16504 in the 3DMark Steel Nomad DX12 test. This is its only recorded benchmark, and it represents its average benchmark score as well.

Q: How does the RTX 5090 D V2 compare to its nearest rivals in the database?

A: The NVIDIA T400 scores 16508 with a 0% delta, the AMD Radeon PRO W7500 scores 16415 with a 0.5% delta, the NVIDIA RTX PRO 6000 Blackwell scores 16408 with a 0.6% delta, and the AMD Radeon RX 5700 XT scores 16361 with a 0.9% delta. The RTX 5090 D V2 sits within a very tight performance band relative to these cards.

Q: Which card has a higher FP32 performance figure?

A: The AMD Instinct MI455X delivers 157.3 TFLOPS FP32, while the NVIDIA GeForce RTX 5090 D V2 delivers 104.8 TFLOPS FP32. The MI455X holds a substantial lead in raw floating-point throughput based on the recorded specifications.

Q: What is the memory configuration difference between the two cards?

A: The MI455X uses 432 GB of HBM4 memory with a 24576-bit bus and 23.3 TB/s bandwidth. The RTX 5090 D V2 uses 24 GB of GDDR7 memory with a 384-bit bus and 1.34 TB/s bandwidth. The MI455X offers dramatically larger capacity and higher bandwidth.

Q: Do both cards support standard graphics APIs like DirectX and Vulkan?

A: No. The MI455X lists DirectX, OpenGL, and Vulkan as N/A. The RTX 5090 D V2 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Architecture Differences

The two products diverge fundamentally in their design targets. The AMD Instinct MI455X uses the MI450 256CU chip built on CDNA 5.0 architecture, fabricated on a 2 nm process at TSMC. It packs 320,000 million transistors into a 2990 mm² die, yielding a transistor density of 107.0M per mm². The NVIDIA GeForce RTX 5090 D V2 uses the GB202 chip with Blackwell 2.0 architecture, also from TSMC but on a 5 nm process. It contains 92,200 million transistors on a 750 mm² die, with a higher density of 122.9M per mm².

The compute resources differ sharply. The MI455X carries 32768 shading units, 1024 texture mapping units, and 0 ROPs. The RTX 5090 D V2 has 21760 shading units, 680 TMUs, and 176 ROPs. The MI455X also includes no ray tracing cores and no tensor cores in the recorded data, while the RTX 5090 D V2 features 170 ray tracing cores and 680 tensor cores. Pixel rate for the MI455X is listed as 0 MPixel/s, while the RTX 5090 D V2 achieves 423.6 GPixel/s. Texture rate favors the MI455X at 2,457.6 GTexel/s versus 1,636.8 GTexel/s for the RTX 5090 D V2.

Memory architecture reflects the divergent purposes. The MI455X uses HBM4 with 432 GB capacity, a 24576-bit interface, and 23.3 TB/s bandwidth. The RTX 5090 D V2 uses GDDR7 with 24 GB capacity, a 384-bit interface, and 1.34 TB/s bandwidth. Clock behavior also differs: the MI455X runs at a 1000 MHz base and 2400 MHz boost, while the RTX 5090 D V2 boosts from 2017 MHz to 2407 MHz. Memory clocks are 1900 MHz with 7.6 Gbps effective for the MI455X and 1750 MHz with 28 Gbps effective for the RTX 5090 D V2.

The API support separates them completely. The MI455X lists DirectX, OpenGL, and Vulkan as N/A, indicating a compute or server-oriented role. The RTX 5090 D V2 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, making it suitable for conventional graphics workloads. The MI455X has no display outputs, while the RTX 5090 D V2 provides 1x HDMI 2.1b and 3x DisplayPort 2.1b. Power requirements differ as well: the MI455X draws 2300 W TDP with no power connectors and a suggested PSU of 2700 W, whereas the RTX 5090 D V2 draws 575 W TDP with a single 16-pin connector and a 950 W suggested PSU.

The bus interfaces reflect generation differences. The MI455X uses PCIe 6.0 x16, while the RTX 5090 D V2 uses PCIe 5.0 x16. Physical design also diverges: the MI455X is an EAM Module with unspecified dimensions, while the RTX 5090 D V2 is a dual-slot card measuring 304 mm in length, 137 mm in height, and 48 mm in width. The production status of the MI455X is not recorded, while the RTX 5090 D V2 is marked as active.

The Verdict

The data supports distinct roles for each product. The AMD Instinct MI455X delivers superior raw compute specifications: 157.3 TFLOPS FP32, 432 GB of HBM4 memory, 23.3 TB/s bandwidth, and a 2 nm process node. These figures position it for massive parallel workloads, particularly those requiring enormous memory capacity and high memory bandwidth. Its lack of display outputs, absence of graphics API support, and 2300 W TDP confirm a server or accelerator orientation rather than a desktop graphics card.

The NVIDIA GeForce RTX 5090 D V2 offers a validated benchmark score of 16504 in 3DMark Steel Nomad DX12, placing it in a tight cluster with rivals ranging from 16361 to 16508. It supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, includes ray tracing and tensor cores, and provides display outputs. Its 575 W TDP and dual-slot form factor make it feasible for conventional workstation or enthusiast systems. The 24 GB GDDR7 memory and 1.34 TB/s bandwidth serve graphics and standard compute workloads adequately.

The MI455X cannot be assessed for graphics performance due to missing benchmark data and unsupported graphics APIs. Its FP32 and FP16 figures are identical at 157.3 TFLOPS with a 1:1 ratio, matching the RTX 5090 D V2's 104.8 TFLOPS in both precisions. The MI455X leads in texture rate at 2,457.6 GTexel/s versus 1,636.8 GTexel/s, but the RTX 5090 D V2 counters with a 423.6 GPixel/s pixel rate while the MI455X records 0 MPixel/s. The RTX 5090 D V2 also holds transistor density advantages at 122.9M per mm² versus 107.0M per mm².

The RTX 5090 D V2's release date of 2025-08-14 precedes the MI455X's 2026-07-22 launch. The MI455X's predecessor is Radeon Instinct, while the RTX 5090 D V2 follows GeForce 40 and leads to GeForce 60. The RTX 5090 D V2 has a recorded launch MSRP of 2,299 USD. The MI455X has no such entry. Users seeking a validated graphics card with ray tracing, tensor cores, and API support should consider the RTX 5090 D V2. Users requiring extreme memory capacity, high FP32 throughput, and HBM4 bandwidth for compute-centric tasks should evaluate the MI455X based on its architectural specifications, given the absence of benchmark validation.

Specification Differences

The recorded specifications differ across nearly every major category. Process nodes: the MI455X uses 2 nm, the RTX 5090 D V2 uses 5 nm, both from TSMC. Transistor counts: 320,000 million for the MI455X versus 92,200 million for the RTX 5090 D V2. Die sizes: 2990 mm² against 750 mm². Transistor densities: 107.0M per mm² versus 122.9M per mm². Base clocks: 1000 MHz versus 2017 MHz. Boost clocks: 2400 MHz versus 2407 MHz. Memory clocks: 1900 MHz with 7.6 Gbps effective versus 1750 MHz with 28 Gbps effective. Memory capacity: 432 GB HBM4 versus 24 GB GDDR7. Bus widths: 24576 bit versus 384 bit. Bandwidth: 23.3 TB/s versus 1.34 TB/s.

Shading units: 32768 versus 21760. TMUs: 1024 versus 680. ROPs: 0 versus 176. Ray tracing cores: none recorded versus 170. Tensor cores: none recorded versus 680. Pixel rates: 0 MPixel/s versus 423.6 GPixel/s. Texture rates: 2,457.6 GTexel/s versus 1,636.8 GTexel/s. FP32: 157.3 TFLOPS versus 104.8 TFLOPS. FP16: 157.3 TFLOPS (1:1) versus 104.8 TFLOPS (1:1). TDP: 2300 W versus 575 W. Slot width: EAM Module versus dual-slot. Power connectors: none versus 1x 16-pin. Suggested PSU: 2700 W versus 950 W. Bus interface: PCIe 6.0 x16 versus PCIe 5.0 x16. Display outputs: none versus 1x HDMI 2.1b and 3x DisplayPort 2.1b. DirectX: N/A versus 12 Ultimate (12_2). OpenGL: N/A versus 4.6. Vulkan: N/A versus 1.4. Production status: not recorded versus active. Release dates: 2026-07-22 versus 2025-08-14. Predecessors: Radeon Instinct versus GeForce 40. Successors: none recorded versus GeForce 60. The RTX 5090 D V2 also lists physical dimensions of 304 mm length, 137 mm height, and 48 mm width, while the MI455X has no recorded dimensions.