AMD Instinct MI325X vs AMD Radeon RX 7700 XT Comparison

Head-to-Head Benchmarks

The recorded data presents a unique comparison. The AMD Instinct MI325X is a compute accelerator with no benchmark entries, no average score, and a percentile rank of 50. The AMD Radeon RX 7700 XT, by contrast, has a full suite of ten benchmark results, an average score of 22,549, and sits at the 67th percentile of all GPUs in the database. The head-to-head benchmark list is empty, meaning no direct test pits these two against each other. The wins column shows zero for both sides.

What the data does show is that the RX 7700 XT delivers measurable results across DirectX, OpenCL, Vulkan, and compute workloads. Its strongest score is in the Geekbench OpenCL test at 138,383, a figure that far exceeds its Passmark G3D score of 22,547. The Vulkan result sits at 46,443. In Passmark tests, the DirectX 11 score of 232 leads the DirectX 9 score of 294, which is unusual because the older API typically scores lower. The DirectX 12 result of 79 is the lowest among the DirectX variants, while the DirectX 10 score of 119 sits between. The Passmark G2D score of 1,161 and the GPU compute score of 12,912 round out the picture.

The MI325X has no such data. Its average benchmark score is 0, its percentile is 50, and its nearest rivals list is empty. This means the database contains no recorded measurements for the MI325X in any workload. The comparison therefore hinges on architectural and specification differences, not on observed performance deltas.

For context on the RX 7700 XT, the nearest rivals in the database show tight clustering. The NVIDIA GeForce RTX 5060 Mobile posts an average score of 22,435, which is 0.5% higher than the RX 7700 XT. The RTX 4060 Mobile scores 22,729, 0.8% lower than the RX 7700 XT. The RTX 2080 scores 22,895, 1.5% lower. The AMD Radeon RX 5700 scores 22,170, 1.7% higher. These deltas are small, indicating the RX 7700 XT sits in a competitive performance band where no single rival dominates by a wide margin.

The Verdict

The data supports a clear split. The AMD Instinct MI325X is a compute accelerator with no display outputs, no graphics API support, and no benchmark scores. It targets workloads that do not appear in the database's measurement suite. The AMD Radeon RX 7700 XT, on the other hand, is a graphics card with active production status, a full API stack including DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, and ten recorded benchmark scores.

For users seeking measured graphics performance, the RX 7700 XT is the only option with data to support a decision. Its 67th percentile placement and average score of 22,549 place it above the midpoint of all GPUs in the database. The nearest rival data shows it trades leads with several NVIDIA cards within a 1.5% band, so it does not hold a commanding advantage over any single competitor.

For users seeking compute acceleration, the MI325X presents no benchmark evidence. Its 256 GB of HBM3e memory and 8192-bit bus width suggest a class of hardware aimed at large-scale parallel workloads, but the database contains no measurements to quantify that capability. The absence of data is itself informative: this product does not participate in the standard graphics benchmark suite.

The choice depends on workload type. The RX 7700 XT serves any task requiring graphics rendering, display output, or DirectX/Vulkan acceleration. The MI325X serves compute tasks that fit its memory and bandwidth profile, but no recorded scores exist to rank it against competitors.

Architecture Differences

The two chips share a 5 nm process node from TSMC, but diverge in nearly every other architectural dimension. The MI325X uses the CDNA 3.0 architecture on the Aqua Vanjaram chip, while the RX 7700 XT uses RDNA 3.0 on the Navi 32 chip. The MI325X belongs to the Instinct (MIx) generation, while the RX 7700 XT belongs to the Navi III (RX 7000) generation.

The transistor counts differ by a factor of more than five. The MI325X packs 153,000 million transistors on a 1017 mm² die, yielding a transistor density of 150.4 million per mm². The RX 7700 XT contains 28,100 million transistors on a 346 mm² die, for a density of 81.2 million per mm². The MI325X uses its additional silicon for a far larger compute array: 19,456 shading units and 1,216 texture mapping units, against 3,456 shading units and 216 texture mapping units on the RX 7700 XT.

The render output unit count tells a different story. The MI325X has zero ROPs and a pixel rate of 0 MPixel/s, because it is not designed for rasterized graphics output. The RX 7700 XT has 96 ROPs and a pixel rate of 244.2 GPixel/s. Ray tracing cores appear only on the RX 7700 XT with 54 units. The MI325X lists no ray tracing cores at all.

Texture rates reflect the compute orientation. The MI325X achieves 2,553.6 GTexel/s, while the RX 7700 XT reaches 549.5 GTexel/s. Floating point performance shows the MI325X at 81.72 TFLOPS for both FP32 and FP16, while the RX 7700 XT delivers 35.17 TFLOPS for both. The MI325X does not list tensor cores, nor does the RX 7700 XT.

The API support differs completely. The MI325X reports N/A for DirectX, OpenGL, and Vulkan. The RX 7700 XT supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. This makes sense with the absence of display outputs on the MI325X: it has no graphics pipeline to expose to those APIs.

Specification Differences

The memory subsystems diverge sharply. The MI325X offers 256 GB of HBM3e on a 8192-bit bus, delivering 6.14 TB/s of bandwidth. The RX 7700 XT offers 12 GB of GDDR6 on a 192-bit bus, delivering 432.0 GB/s. The MI325X runs its memory at 1500 MHz with 6 Gbps effective, while the RX 7700 XT runs at 2250 MHz with 18 Gbps effective.

Clock speeds differ, with the RX 7700 XT running higher. Its base clock is 1435 MHz, boost clock is 2544 MHz, and game clock is 2171 MHz. The MI325X has a base clock of 1000 MHz and a boost clock of 2100 MHz, with no game clock listed.

Power and cooling configurations are in different classes. The MI325X carries a TDP of 1000 W with a suggested PSU of 1400 W, uses an OAM Module slot width, and lists no power connectors because it is a module, not a card. The RX 7700 XT carries a TDP of 245 W with a suggested PSU of 550 W, uses a dual-slot design, and requires two 8-pin power connectors.

The bus interfaces differ by one generation. The MI325X uses PCIe 5.0 x16, while the RX 7700 XT uses PCIe 4.0 x16. Display outputs exist only on the RX 7700 XT: one HDMI 2.1a, two DisplayPort 2.1, and one USB Type-C. The MI325X lists no outputs.

Physical dimensions are only recorded for the RX 7700 XT: 267 mm long, 135 mm tall, and 50 mm wide. The MI325X has no recorded dimensions. Release dates place the MI325X on 2024-10-09 and the RX 7700 XT on 2023-09-05. The RX 7700 XT has a launch MSRP of 449 USD, while the MI325X has no launch MSRP recorded. The RX 7700 XT lists a predecessor of Navi II and a successor of Navi IV, while the MI325X lists a predecessor of Radeon Instinct and no successor.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The AMD Radeon RX 7700 XT has an average benchmark score of 22,549. The AMD Instinct MI325X has an average benchmark score of 0, with no benchmark entries recorded.

Q: How does the RX 7700 XT compare to its nearest rival in the database?

A: The RX 7700 XT sits within a 1.7% band of four rivals. The NVIDIA GeForce RTX 5060 Mobile is 0.5% higher, the RTX 4060 Mobile is 0.8% lower, the RTX 2080 is 1.5% lower, and the AMD Radeon RX 5700 is 1.7% higher.

Q: What memory configurations do the two cards use?

A: The MI325X uses 256 GB of HBM3e on an 8192-bit bus with 6.14 TB/s bandwidth. The RX 7700 XT uses 12 GB of GDDR6 on a 192-bit bus with 432.0 GB/s bandwidth.

Q: Does the MI325X support DirectX or Vulkan?

A: No. The MI325X reports N/A for DirectX, OpenGL, and Vulkan. The RX 7700 XT supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: What are the power requirements for each product?

A: The MI325X has a TDP of 1000 W and a suggested PSU of 1400 W. The RX 7700 XT has a TDP of 245 W and a suggested PSU of 550 W.

Q: Which product has ray tracing cores?

A: Only the RX 7700 XT lists ray tracing cores, with 54 units. The MI325X lists no ray tracing cores and has a pixel rate of 0 MPixel/s due to its lack of ROPs.