AMD Instinct MI325X vs NVIDIA GeForce RTX 5070 Comparison

Where Each One Wins

The AMD Instinct MI325X and NVIDIA GeForce RTX 5070 occupy entirely different performance domains, and the recorded data makes the split unambiguous. The MI325X wins on raw compute throughput and memory capacity, while the RTX 5070 wins on graphics rendering, API support, and efficiency metrics.

The MI325X delivers 81.72 TFLOPS of FP32 compute, which is 2.6 times the 30.87 TFLOPS of the RTX 5070. Its 256 GB of HBM3e memory dwarfs the 12 GB of GDDR7 on the RTX 5070, and its 6.14 TB/s bandwidth is 9.1 times the 672.0 GB/s available to the NVIDIA card. These are the numbers that define the AMD card's purpose: large-scale compute workloads where memory capacity and bandwidth dominate.

The RTX 5070 counters with capabilities the MI325X lacks entirely. It has 48 RT cores and 192 tensor cores, while the MI325X lists no RT or tensor core counts. The RTX 5070 supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the MI325X records N/A for all three APIs. The RTX 5070 also has display outputs (1x HDMI 2.1b and 3x DisplayPort 2.1b), while the MI325X has no outputs. These features place the NVIDIA card firmly in the graphics and rendering segment.

The RTX 5070 further distinguishes itself with benchmark scores. Its 3DMark Steel Nomad DX12 score of 5077, Geekbench OpenCL score of 172660, and Geekbench Vulkan score of 178923 all come from actual recorded tests. The MI325X has no benchmark entries in the database, so its performance in these graphics-oriented workloads cannot be quantified here.

FAQ

Q: Which card has higher FP32 compute performance?

A: The AMD Instinct MI325X records 81.72 TFLOPS FP32, which is 2.6 times the 30.87 TFLOPS of the NVIDIA GeForce RTX 5070.

Q: How do the memory configurations compare?

A: The MI325X has 256 GB of HBM3e with an 8192-bit bus and 6.14 TB/s bandwidth. The RTX 5070 has 12 GB of GDDR7 with a 192-bit bus and 672.0 GB/s bandwidth.

Q: Does the MI325X support DirectX or Vulkan?

A: No. The database records N/A for DirectX, OpenGL, and Vulkan on the MI325X. The RTX 5070 supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4.

Q: What is the power requirement for each card?

A: The MI325X has a TDP of 1000 W and a suggested PSU of 1400 W. The RTX 5070 has a TDP of 250 W and a suggested PSU of 600 W.

Q: Does the MI325X have any benchmark scores in the database?

A: No. The MI325X has no benchmark entries. The RTX 5070 has ten recorded scores, including 3DMark, Geekbench, and Passmark tests.

Q: What is the physical form factor of each card?

A: The MI325X is an OAM module with no power connectors and no display outputs. The RTX 5070 is a dual-slot card measuring 245 mm by 115 mm by 40 mm, with a 1x 16-pin power connector.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark comparisons between the MI325X and RTX 5070, but the available individual measurements and specifications allow for direct quantitative comparison on several axes.

Compute throughput is the clearest differentiator. The MI325X delivers 81.72 TFLOPS FP32 and 81.72 TFLOPS FP16 (1:1 ratio). The RTX 5070 delivers 30.87 TFLOPS FP32 and 30.87 TFLOPS FP16 (1:1 ratio). The AMD card holds a 2.6 times advantage in both precision formats.

Texture throughput follows a similar pattern. The MI325X records 2,553.6 GTexel/s, which is 5.3 times the 482.3 GTexel/s of the RTX 5070. The RTX 5070 counters with a pixel rate of 201.0 GPixel/s, while the MI325X records 0 MPixel/s, reflecting its lack of a rasterization pipeline.

Memory bandwidth is where the MI325X shows its most extreme lead. At 6.14 TB/s versus 672.0 GB/s, the AMD card offers 9.1 times the bandwidth. This advantage stems from the 8192-bit bus width compared to 192-bit, and the HBM3e memory type versus GDDR7.

The RTX 5070's benchmark scores provide the only recorded performance data in this comparison. Its 3DMark Steel Nomad DX12 score of 5077, Geekbench OpenCL score of 172660, and Geekbench Vulkan score of 178923 are the measured results available. The Passmark G3D score of 29137 and Passmark GPU Compute score of 15787 further document the NVIDIA card's capabilities. Its average benchmark score of 40377 places it at the 82nd percentile of all GPUs in the database.

Rival comparisons for the RTX 5070 show close competition. The AMD Radeon Pro 580 scores 40318, a 0.1% difference. The AMD Radeon Pro WX 7100 scores 40063, a 0.8% difference. The AMD Radeon Pro 5300 scores 40870, a 1.2% difference in the other direction. The NVIDIA RTX A500 Mobile scores 39568, a 2% difference. These figures show the RTX 5070 sits in a tight cluster of similar-performing workstation cards.

Specification Differences

The physical and electrical specifications separate these cards dramatically. The MI325X uses a 1000 W TDP with no power connectors, as it is an OAM module designed for server integration. The RTX 5070 uses 250 W with a 1x 16-pin connector and a suggested PSU of 600 W. The MI325X suggests a 1400 W PSU.

Clock speeds differ substantially. The MI325X runs at 1000 MHz base and 2100 MHz boost. The RTX 5070 runs at 2325 MHz base and 2512 MHz boost. The NVIDIA card operates at significantly higher frequencies despite its lower power envelope.

Memory clocks also diverge. The MI325X memory runs at 1500 MHz with 6 Gbps effective. The RTX 5070 memory runs at 1750 MHz with 28 Gbps effective. The RTX 5070 achieves higher effective memory speed per pin, but the MI325X compensates with far more pins and channels.

The MI325X has 19,456 shading units and 1,216 TMUs, while the RTX 5070 has 6,144 shading units and 192 TMUs. The RTX 5070 has 80 ROPs, while the MI325X records 0. The RTX 5070 also has 48 RT cores and 192 tensor cores, neither of which appears in the MI325X specification.

The MI325X transistor count is 153,000 million across a 1017 mm² die, yielding a density of 150.4 million transistors per mm². The RTX 5070 has 31,100 million transistors on a 263 mm² die, yielding 118.3 million per mm². Both use a 5 nm process at TSMC.

Architecture Differences

The MI325X is built on CDNA 3.0 architecture with the Aqua Vanjaram chip, part of AMD's Instinct MIx generation. The RTX 5070 uses Blackwell 2.0 architecture with the GB205 chip, part of NVIDIA's GeForce 50 generation. Both are fabricated on a 5 nm process at TSMC, but the architectural goals could not be more different.

The MI325X is a compute-oriented accelerator with no display outputs, no graphics API support, and no rasterization hardware. Its 0 ROPs and 0 MPixel/s pixel rate confirm it cannot render graphics. The CDNA architecture prioritizes FP32/FP16 compute throughput and memory bandwidth for data center workloads.

The RTX 5070 is a full graphics processor with 48 RT cores for ray tracing, 192 tensor cores for AI acceleration, and 80 ROPs for rasterization. Its DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 API support covers the full graphics software stack. The Blackwell 2.0 architecture integrates rendering, compute, and tensor workloads into a single consumer-oriented package.

The MI325X memory subsystem uses HBM3e with an 8192-bit bus and 256 GB capacity. The RTX 5070 uses GDDR7 with a 192-bit bus and 12 GB capacity. The former prioritizes capacity and bandwidth for large datasets; the latter prioritizes cost and physical practicality for consumer cards.

The MI325X has no RT or tensor cores listed, while the RTX 5070 has 48 and 192 respectively. This means the AMD card relies entirely on its general-purpose shading units for compute, while the NVIDIA card has dedicated hardware for ray tracing and AI tensor operations.

The MI325X predecessor is Radeon Instinct, and its generation is Instinct (MIx). The RTX 5070 predecessor is GeForce 40, its successor is GeForce 60, and its production status is Active. The MI325X production status is not recorded.

The Verdict

The data splits cleanly along use-case lines. The AMD Instinct MI325X is purpose-built for compute workloads that demand massive memory capacity and bandwidth. Its 256 GB HBM3e, 6.14 TB/s bandwidth, and 81.72 TFLOPS FP32 make it the clear choice for applications that process very large datasets or need sustained compute throughput. The card has no display outputs, no graphics API support, and no rasterization capability, so it cannot function as a graphics card.

The NVIDIA GeForce RTX 5070 is the only one of the two that can render graphics. It has 48 RT cores, 192 tensor cores, 80 ROPs, and full DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 support. Its recorded benchmark scores, including the 3DMark Steel Nomad score of 5077 and the Passmark G3D score of 29137, confirm it performs in the upper tier of GPUs, sitting at the 82nd percentile. Its average benchmark score of 40377 places it within 2% of several rival workstation cards.

The efficiency comparison also favors the RTX 5070. It delivers its performance at 250 W TDP, while the MI325X requires 1000 W. The RTX 5070 fits in a dual-slot 245 mm card with a standard 16-pin power connector, while the MI325X is an OAM module with no connectors and no display outputs.

The MI325X would suit a system builder assembling a compute node where memory capacity is the limiting factor. The RTX 5070 would suit a workstation or desktop where graphics rendering, API compatibility, and display output are required. The two cards do not compete for the same socket, the same software stack, or the same physical installation. The recorded data confirms they serve different markets, and the choice depends entirely on whether the workload requires graphics functionality or pure compute scale.