AMD Instinct MI355X vs NVIDIA GeForce RTX 4070 SUPER Comparison

Head-to-Head Benchmarks

The AMD Instinct MI355X has no recorded benchmark scores in the database, while the NVIDIA GeForce RTX 4070 SUPER has an average benchmark score of 43223. This places the RTX 4070 SUPER in the 83rd percentile of all GPUs, whereas the MI355X sits at the 50th percentile with a score of zero. The comparison is therefore one-sided: the RTX 4070 SUPER delivers measurable performance across ten recorded tests, while the MI355X has no comparable data points.

The RTX 4070 SUPER shows its strongest results in compute-oriented workloads. Its Geekbench OpenCL score reaches 172795, and the Vulkan score climbs to 205624. These figures indicate substantial raw compute throughput for a consumer GPU. The PassMark G3D score of 29995 reinforces this, while the PassMark GPU compute score of 17108 shows solid general-purpose compute capacity. The 3DMark Steel Nomad DX12 result of 4627 demonstrates modern DirectX 12 rendering capability.

Among its nearest rivals, the RTX 4070 SUPER holds a narrow edge. It posts an average score that is 0.1% ahead of the NVIDIA Quadro M6000 24 GB (43262) and the NVIDIA GeForce RTX 5050 Mobile (43268). It leads the NVIDIA Quadro M6000 (43301) by 0.2% and the NVIDIA GeForce RTX 4090 Mobile (43667) by 1%. These deltas are small, indicating that the RTX 4070 SUPER sits in a tightly contested performance band near the top of its class.

The MI355X, by contrast, has no benchmark entries and no rival comparisons in the database. Its average benchmark score is zero, which means the recorded data offers no direct performance evidence for this accelerator. The head-to-head benchmark table is empty, and neither product records a win in the winsA or winsB fields. The only quantitative performance information available for the MI355X comes from its theoretical specifications, which are substantial: FP32 throughput of 78.64 TFLOPS, FP16 of 78.64 TFLOPS, and a texture rate of 2,457.6 GTexel/s. These numbers dwarf the RTX 4070 SUPER's FP32 of 35.48 TFLOPS and texture rate of 554.4 GTexel/s, but without actual benchmark results, the database cannot confirm real-world behavior.

Architecture Differences

The two GPUs come from fundamentally different design philosophies. The AMD Instinct MI355X uses the CDNA 4.0 architecture on the MI350 256CU chip, built on a 3 nm process at TSMC. It packs 185,000 million transistors into a die size of 2380 mm², yielding a transistor density of 77.7M per mm². The NVIDIA GeForce RTX 4070 SUPER uses the Ada Lovelace architecture on the AD104 chip, built on a 5 nm process, also at TSMC. It contains 35,800 million transistors on a 294 mm² die, for a density of 121.8M per mm². The MI355X die is roughly eight times larger in area, but the RTX 4070 SUPER achieves a higher transistor density.

Memory configurations diverge sharply. The MI355X carries 288 GB of HBM3e on an 8192-bit bus, delivering 8.19 TB/s of bandwidth. The RTX 4070 SUPER has 12 GB of GDDR6X on a 192-bit bus, providing 504.2 GB/s. The MI355X memory clock runs at 2000 MHz (8 Gbps effective), while the RTX 4070 SUPER memory clock is 1313 MHz (21 Gbps effective). The bandwidth advantage for the MI355X is enormous, exceeding the RTX 4070 SUPER by a factor of roughly sixteen.

Compute resources differ in scale. The MI355X has 16384 shading units and 1024 texture mapping units, with no ROPs recorded. The RTX 4070 SUPER has 7168 shading units, 224 TMUs, and 80 ROPs. The MI355X also lacks dedicated ray tracing cores and tensor cores in the database, while the RTX 4070 SUPER includes 56 RT cores and 224 tensor cores. Clock speeds favor the NVIDIA part: the RTX 4070 SUPER boosts to 2475 MHz versus 2400 MHz for the MI355X, and its base clock of 1980 MHz is nearly double the MI355X's 1000 MHz.

Power and form factor represent another major split. The MI355X has a TDP of 1400 W, requires a suggested PSU of 1800 W, and uses an OAM module form factor with no power connectors and no display outputs. The RTX 4070 SUPER has a TDP of 220 W, needs a 550 W suggested PSU, uses a dual-slot design with a single 16-pin connector, and offers display outputs via 1x HDMI 2.1 and 3x DisplayPort 1.4a. The bus interface also differs: PCIe 5.0 x16 for the MI355X versus PCIe 4.0 x16 for the RTX 4070 SUPER.

Where Each One Wins

The RTX 4070 SUPER wins in every recorded benchmark category because the MI355X has no benchmark entries. The data shows the RTX 4070 SUPER delivers strong results across DirectX 9, 10, 11, and 12 tests in PassMark, with scores of 344, 167, 273, and 110 respectively. The G2D score of 1184 indicates capable 2D performance, while the G3D score of 29995 shows strong 3D rendering. The Geekbench results confirm cross-platform compute strength, and the 3DMark Steel Nomad score validates modern DirectX 12 gaming workloads.

The MI355X wins on raw theoretical specifications. Its FP32 throughput of 78.64 TFLOPS is more than double the RTX 4070 SUPER's 35.48 TFLOPS. Its texture rate of 2,457.6 GTexel/s is over four times the RTX 4070 SUPER's 554.4 GTexel/s. Memory capacity of 288 GB versus 12 GB, and bandwidth of 8.19 TB/s versus 504.2 GB/s, give the MI355X a decisive theoretical edge for data-intensive workloads. The pixel rate, however, is recorded as 0 MPixel/s for the MI355X, while the RTX 4070 SUPER manages 198.0 GPixel/s, indicating the MI355X is not designed for traditional rasterization output.

Use-case separation is clear from the data. The RTX 4070 SUPER serves client-side workloads: gaming, DirectX rendering, OpenGL and Vulkan applications, and display output. The MI355X serves accelerator-style workloads: massive memory capacity, extreme bandwidth, and high FP16 throughput with a 1:1 FP32 ratio. The MI355X has no display outputs and no DirectX, OpenGL, or Vulkan API support, which confirms it is not intended for interactive graphics. The RTX 4070 SUPER supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, making it a general-purpose graphics card.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The NVIDIA GeForce RTX 4070 SUPER has an average benchmark score of 43223, while the AMD Instinct MI355X has an average score of 0.

Q: What is the memory capacity difference?

A: The AMD Instinct MI355X has 288 GB of HBM3e memory, while the NVIDIA GeForce RTX 4070 SUPER has 12 GB of GDDR6X memory.

Q: How do the FP32 compute capabilities compare?

A: The AMD Instinct MI355X delivers 78.64 TFLOPS of FP32 throughput, while the NVIDIA GeForce RTX 4070 SUPER delivers 35.48 TFLOPS.

Q: Does the AMD Instinct MI355X support display outputs?

A: No, the AMD Instinct MI355X has no display outputs, whereas the NVIDIA GeForce RTX 4070 SUPER offers 1x HDMI 2.1 and 3x DisplayPort 1.4a.

Q: What are the power requirements for each GPU?

A: The AMD Instinct MI355X has a TDP of 1400 W and a suggested PSU of 1800 W, while the NVIDIA GeForce RTX 4070 SUPER has a TDP of 220 W and a suggested PSU of 550 W.

Q: Which GPU has ray tracing cores?

A: The NVIDIA GeForce RTX 4070 SUPER has 56 RT cores and 224 tensor cores, while the AMD Instinct MI355X has no recorded RT or tensor core counts.

Specification Differences

The two GPUs differ in every major specification category. The MI355X uses a 3 nm process, while the RTX 4070 SUPER uses 5 nm. Transistor count is 185,000 million versus 35,800 million, and die size is 2380 mm² versus 294 mm². Transistor density favors the RTX 4070 SUPER at 121.8M per mm² versus 77.7M per mm².

Clock speeds: the MI355X runs at 1000 MHz base and 2400 MHz boost, while the RTX 4070 SUPER runs at 1980 MHz base and 2475 MHz boost. Memory clocks are 2000 MHz (8 Gbps effective) for the MI355X and 1313 MHz (21 Gbps effective) for the RTX 4070 SUPER.

Memory: 288 GB HBM3e on an 8192-bit bus with 8.19 TB/s bandwidth versus 12 GB GDDR6X on a 192-bit bus with 504.2 GB/s bandwidth. Shading units are 16384 versus 7168, TMUs are 1024 versus 224, and ROPs are 0 versus 80. The RTX 4070 SUPER has 56 RT cores and 224 tensor cores; the MI355X has none recorded.

Pixel rate is 0 MPixel/s for the MI355X versus 198.0 GPixel/s for the RTX 4070 SUPER. Texture rate is 2,457.6 GTexel/s versus 554.4 GTexel/s. FP32 and FP16 are both 78.64 TFLOPS for the MI355X and 35.48 TFLOPS for the RTX 4070 SUPER.

TDP is 1400 W versus 220 W. The MI355X uses an OAM module with no power connectors; the RTX 4070 SUPER is dual-slot with a 16-pin connector. Suggested PSU is 1800 W versus 550 W. Bus interface is PCIe 5.0 x16 versus PCIe 4.0 x16. The MI355X has no display outputs; the RTX 4070 SUPER has 1x HDMI 2.1 and 3x DisplayPort 1.4a. API support: the MI355X lists none, while the RTX 4070 SUPER supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Dimensions also differ: the MI355X is 102 mm long and 165 mm wide, while the RTX 4070 SUPER is 267 mm long, 112 mm high, and 42 mm wide. The RTX 4070 SUPER has a launch MSRP of 599 USD.

The Verdict

The recorded data shows two products with no meaningful overlap. The NVIDIA GeForce RTX 4070 SUPER is the only one with benchmark evidence, holding an 83rd percentile rank and an average score of 43223. Its nearest rivals all sit within 1% of its score, confirming it performs at the top of a competitive band. It offers display outputs, full graphics API support, and a dual-slot form factor with a 220 W TDP, making it suitable for standard graphics workloads.

The AMD Instinct MI355X has no benchmark scores and no rivals in the database. Its theoretical specifications indicate a different purpose: 288 GB of HBM3e, 8.19 TB/s bandwidth, 16384 shading units, and 78.64 TFLOPS of FP32. The lack of display outputs, the OAM module form factor, and the 1400 W TDP all point to a server or datacenter accelerator, not a client graphics card. The pixel rate of 0 MPixel/s confirms it does not rasterize in the traditional sense.

The choice between them depends entirely on the workload. The data supports the RTX 4070 SUPER for any task requiring DirectX, OpenGL, Vulkan, or display output. The MI355X, based on its specifications, targets memory-bound and compute-bound workloads that need massive capacity and bandwidth. The RTX 4070 SUPER is the only option with recorded performance, while the MI355X remains a specification-only entry in the database.