AMD Instinct MI355X vs AMD Radeon RX 7600 XT Comparison

FAQ

Q: What is the average benchmark score of the AMD Radeon RX 7600 XT?

A: The RX 7600 XT records an average benchmark score of 17,083, placing it in the 60th percentile among all GPUs in the database.

Q: How does the RX 7600 XT compare to its nearest rival, the NVIDIA GeForce RTX 3070?

A: The RX 7600 XT scores 0.7% lower than the RTX 3070, which posts an average score of 17,208. The margin is small enough to consider them statistically equivalent in overall performance.

Q: What is the memory configuration of the AMD Instinct MI355X?

A: The MI355X uses 288 GB of HBM3e memory on an 8192-bit bus, delivering 8.19 TB/s of bandwidth. The memory clock is 2000 MHz with 8 Gbps effective speed.

Q: Does the MI355X have any display outputs?

A: No. The MI355X lists "No outputs" for display connectivity, which is consistent with its OAM Module slot width and server-oriented design.

Q: What is the transistor density difference between the two GPUs?

A: The MI355X has a transistor density of 77.7M per mm², while the RX 7600 XT has 65.2M per mm². The MI355X also uses a 3 nm process compared to the 6 nm process of the RX 7600 XT.

Q: What API support does the RX 7600 XT include?

A: The RX 7600 XT supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI355X lists N/A for DirectX, OpenGL, and Vulkan.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark entries for the AMD Instinct MI355X against the AMD Radeon RX 7600 XT. The MI355X has no recorded benchmark scores, no average score, and no nearest rivals listed. Its percentile rank is 50, which is lower than the RX 7600 XT's 60th percentile, but this reflects the absence of data rather than a measured performance comparison.

The RX 7600 XT provides the only concrete benchmark data in this comparison. Its strongest results come from compute-oriented tests. In Geekbench OpenCL, it scores 92,426, and in Passmark GPU Compute, it scores 8,987. The Vulkan result is 48,366, which is roughly half the OpenCL score. The 3DMark Steel Nomad DX12 test returns a score of 2,348.

Looking at the Passmark suite, the RX 7600 XT shows a distinct pattern. The DirectX 9 test yields 228, which is the highest among the DirectX tests. DirectX 11 scores 167, DirectX 10 scores 85, and DirectX 12 scores 65. The G3D test produces 17,132, while the G2D test produces 1,030. The DirectX 12 result being the lowest suggests that the card's raw rasterization throughput does not translate directly to newer API workloads in this particular benchmark.

The nearest rivals for the RX 7600 XT show tight clustering. The NVIDIA GeForce GTX 690 sits 0.3% ahead with 17,037 points, and the AMD Radeon HD 7970M is 0.4% ahead with 17,019 points. The NVIDIA Tesla M4 trails by 0.9% with 16,932 points. The NVIDIA GeForce RTX 3070 leads the group by 0.7% over the RX 7600 XT. These deltas are all under one percentage point, indicating that the RX 7600 XT occupies a crowded performance band where small variations in workload can flip the ranking.

The MI355X, by contrast, has no measured wins or losses in the database. Its win count is zero, and the RX 7600 XT also has zero recorded wins in the head-to-head section. This means the comparison must rely on architectural and specification differences rather than direct performance measurements.

The Verdict

The data supports a clear split based on workload class. The AMD Instinct MI355X is an accelerator with no display outputs, no consumer API support, and an OAM Module form factor. It targets compute environments where rendering to a screen is irrelevant. The RX 7600 XT is a conventional graphics card with dual-slot cooling, a single 8-pin power connector, and full DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 support.

For anyone running graphics workloads, the RX 7600 XT is the only viable option in this pairing. It produces measurable scores across all recorded tests, and its 60th percentile rank places it above the median GPU in the database. The MI355X has no graphics benchmark data and cannot output video, so it cannot serve as a display adapter.

For compute workloads, the MI355X presents a different profile. Its 78.64 TFLOPS FP32 and FP16 (1:1) figures dwarf the RX 7600 XT's 22.57 TFLOPS in both formats. The MI355X also carries 288 GB of HBM3e memory with 8.19 TB/s bandwidth, which is 28.4 times the bandwidth of the RX 7600 XT's 288.0 GB/s. These numbers indicate a machine designed for memory-bound and throughput-bound compute tasks, not interactive rendering.

The release dates reinforce this separation. The MI355X launched on 2025-06-11, while the RX 7600 XT launched on 2024-01-23. The MI355X belongs to the Instinct (MIx) generation with CDNA 4.0 architecture, while the RX 7600 XT belongs to the Radeon RX 7000 series with RDNA 3.0 architecture. These are different product families with different design goals.

Specification Differences

The two GPUs differ across every major specification category. The MI355X uses a 3 nm process from TSMC, while the RX 7600 XT uses a 6 nm process from the same foundry. Transistor counts are 185,000 million for the MI355X versus 13,300 million for the RX 7600 XT. Die sizes measure 2380 mm² for the MI355X and 204 mm² for the RX 7600 XT.

Clock speeds show an interesting inversion. The RX 7600 XT has a higher base clock at 1980 MHz versus 1000 MHz for the MI355X, and a higher boost clock at 2755 MHz versus 2400 MHz. The RX 7600 XT also lists a game clock of 2470 MHz, which the MI355X does not have. Memory clocks differ as well: 2000 MHz with 8 Gbps effective for the MI355X, and 2250 MHz with 18 Gbps effective for the RX 7600 XT.

Memory capacity and type diverge sharply. The MI355X has 288 GB of HBM3e on a 8192-bit bus, while the RX 7600 XT has 16 GB of GDDR6 on a 128-bit bus. Bandwidth is 8.19 TB/s versus 288.0 GB/s. The MI355X lists 0 ROPs and 0 MPixel/s pixel rate, while the RX 7600 XT has 64 ROPs and 176.3 GPixel/s. Texture rates are 2,457.6 GTexel/s for the MI355X and 352.6 GTexel/s for the RX 7600 XT.

Power and physical specifications differ equally. The MI355X has a TDP of 1400 W and a suggested PSU of 1800 W, while the RX 7600 XT has a TDP of 190 W and a suggested PSU of 450 W. The MI355X uses an OAM Module slot width with no power connectors, while the RX 7600 XT is dual-slot with a single 8-pin connector. The MI355X measures 102 mm by 165 mm, while the RX 7600 XT measures 204 mm by 115 mm. Bus interfaces are PCIe 5.0 x16 for the MI355X and PCIe 4.0 x8 for the RX 7600 XT.

Architecture Differences

The MI355X uses CDNA 4.0 architecture, built for compute acceleration. Its chip is labeled "MI350 256CU" and contains 16,384 shading units and 1,024 TMUs. It has no ROPs, no RT cores, and no tensor cores listed. The architecture targets FP32 and FP16 throughput equally, with both rated at 78.64 TFLOPS in a 1:1 ratio. The lack of display outputs and N/A API support confirms that CDNA 4.0 is not designed for graphics rendering.

The RX 7600 XT uses RDNA 3.0 architecture with the Navi 33 chip, codenamed "Hotpink Bonefish". It contains 2,048 shading units, 128 TMUs, 64 ROPs, and 32 RT cores. FP32 and FP16 are both rated at 22.57 TFLOPS in a 1:1 ratio. The architecture supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, and it provides 1x HDMI 2.1a and 3x DisplayPort 2.1 outputs. The RDNA 3.0 design prioritizes graphics workloads with hardware ray tracing and full rasterization support.

The process node difference is significant. The MI355X's 3 nm process enables a transistor density of 77.7M per mm², while the RX 7600 XT's 6 nm process achieves 65.2M per mm². The MI355X packs 185,000 million transistors into 2380 mm², while the RX 7600 XT packs 13,300 million into 204 mm². The MI355X also lacks a game clock, a pixel rate, and any DirectX or Vulkan support, all of which are present on the RX 7600 XT.

Where Each One Wins

The RX 7600 XT wins in any scenario that requires visual output. It has display outputs, supports modern graphics APIs, and produces measurable scores in all recorded benchmark tests. Its Passmark G3D score of 17,132 and Geekbench Vulkan score of 48,366 indicate functional graphics performance. The DirectX 9 score of 228 and DirectX 11 score of 167 show compatibility with legacy workloads. The 3DMark Steel Nomad DX12 score of 2,348 suggests it handles modern DX12 titles, though the Passmark DX12 score of 65 is comparatively weak.

The RX 7600 XT also wins on power efficiency in relative terms. Its 190 W TDP and 450 W suggested PSU are far lower than the MI355X's 1400 W TDP and 1800 W suggested PSU. The RX 7600 XT fits in a dual-slot consumer form factor with a standard 8-pin connector, while the MI355X requires an OAM Module with no standard power connectors.

The MI355X wins on raw compute capacity. Its 78.64 TFLOPS FP32 is 3.48 times the RX 7600 XT's 22.57 TFLOPS. Its 288 GB memory capacity is 18 times larger, and its 8.19 TB/s bandwidth is 28.4 times higher. The 8192-bit bus width versus 128-bit represents a 64-fold difference. Texture rate is 6.97 times higher at 2,457.6 GTexel/s versus 352.6 GTexel/s.

The MI355X also wins on memory technology. HBM3e provides substantially higher bandwidth than GDDR6, and the 288 GB capacity enables datasets that would never fit in 16 GB. The MI355X uses PCIe 5.0 x16, while the RX 7600 XT uses PCIe 4.0 x8, giving the MI355X a wider and newer host interface.

For compute clusters, training, or inference workloads that do not require display output, the MI355X is the stronger choice based on its memory bandwidth, capacity, and FP32 throughput. For desktop gaming, workstation graphics, or any task requiring a monitor, the RX 7600 XT is the only functional option in this comparison. The production status of the RX 7600 XT is listed as Active, while the MI355X has no production status recorded.