AMD Instinct MI325X vs AMD Radeon RX 7700 Comparison

FAQ

Q: What is the AMD Instinct MI325X designed for?

A: The Instinct MI325X is an AMD accelerator built on the CDNA 3.0 architecture, featuring the Aqua Vanjaram chip. It is part of the Instinct (MIx) generation, uses a 5 nm process from TSMC, and contains 153,000 million transistors on a 1017 mm² die. It has no display outputs and no graphics API support, confirming its role as a compute-only accelerator.

Q: What is the AMD Radeon RX 7700 designed for?

A: The Radeon RX 7700 is a consumer graphics card from the Radeon RX 7000 series, built on the RDNA 3.0 architecture with the Navi 32 chip. It is an active production product with a dual-slot design, 2x 8-pin power connectors, and a 267 mm length. It supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, and includes 40 ray tracing cores.

Q: How do the memory capacities compare between the two?

A: The Instinct MI325X carries 256 GB of HBM3e memory on an 8192-bit bus, delivering 6.14 TB/s of bandwidth. The Radeon RX 7700 has 16 GB of GDDR6 memory on a 256-bit bus, providing 624.1 GB/s of bandwidth. The MI325X offers 16 times the memory capacity and roughly ten times the memory bandwidth.

Q: What are the power requirements for each card?

A: The Instinct MI325X has a TDP of 1000 W and requires a suggested power supply of 1400 W. It uses an OAM module slot with no power connectors, meaning it relies on the host system for power delivery. The Radeon RX 7700 has a TDP of 200 W, requires a 550 W suggested power supply, and uses 2x 8-pin power connectors.

Q: Which card has a higher benchmark percentile ranking?

A: The Radeon RX 7700 holds a percentile rank of 58 among all GPUs in the database, while the Instinct MI325X holds a percentile rank of 50. This is notable because the MI325X has no recorded benchmark scores, whereas the RX 7700 has nine recorded benchmark results with an average score of 15,852.

Q: Are there any benchmark scores available for the Instinct MI325X?

A: No. The database contains no benchmark entries for the Instinct MI325X, and its average benchmark score is recorded as 0. The Radeon RX 7700, by contrast, has scores across tests including 3DMark Steel Nomad DX12 (2,865), Geekbench OpenCL (106,028), and Passmark G3D (20,974).

The Verdict

The database records a clear divergence between these two AMD products. The Instinct MI325X is a compute accelerator with no graphics output, no rendering pipeline, and no benchmark scores. The Radeon RX 7700 is a fully featured consumer GPU with nine recorded benchmarks and a 58th percentile ranking. For any workload requiring visual output, the RX 7700 is the only viable option, as the MI325X has no display outputs at all.

For compute-only tasks, the MI325X presents a different profile. It uses CDNA 3.0 architecture versus the RDNA 3.0 of the RX 7700, and its specifications target data-center scale work. The MI325X has 19,456 shading units compared to the RX 7700's 2,560, and its FP32 throughput is 81.72 TFLOPS versus 25.18 TFLOPS. The MI325X also delivers 2,553.6 GTexel/s texture rate over the RX 7700's 393.4 GTexel/s.

However, the absence of any benchmark data for the MI325X means its real-world performance cannot be verified from the database. The RX 7700's nearest rivals include the AMD Radeon R9 370X (0.1% lower average score), the AMD Radeon RX 9060 (1% lower), the AMD Radeon Pro W5500 (1.1% higher), and the NVIDIA GeForce RTX 3060 Ti (1.7% higher). These close margins indicate the RX 7700 sits in a competitive consumer segment.

The data suggests the MI325X is for server installations and high-performance compute clusters, while the RX 7700 serves desktop gaming and workstation graphics. The MI325X uses an OAM module form factor, not a standard PCIe slot card, and its 1000 W TDP requires specialized cooling and power delivery. The RX 7700 is a dual-slot card with a 200 W TDP and standard PCIe 4.0 x16 interface.

Head-to-Head Benchmarks

Direct comparison is limited because the Instinct MI325X has no benchmark scores in the database. The Radeon RX 7700 has nine recorded tests, and its average benchmark score is 15,852. The MI325X records zero across all metrics, meaning there is no measured evidence of its performance in these specific tests.

The RX 7700's benchmark results span multiple generations of DirectX and compute workloads. Its Passmark G3D score is 20,974, while its Passmark GPU Compute score is 10,963. In Geekbench OpenCL, it scores 106,028, indicating strong general compute capability. Its 3DMark Steel Nomad DX12 score is 2,865, a modern workload test.

The nearest rival data for the RX 7700 shows tight competition. The AMD Radeon R9 370X scores 15,862, which is 0.1% lower than the RX 7700. The AMD Radeon RX 9060 scores 16,014, 1% lower. The AMD Radeon Pro W5500 scores 15,679, which is 1.1% higher. The NVIDIA GeForce RTX 3060 Ti scores 16,129, 1.7% higher. These deltas place the RX 7700 within a narrow performance band of its peers.

The MI325X cannot be placed in this ranking because the database lacks any measured scores for it. Its percentile rank of 50 appears to be a placeholder rather than a derived statistic, as the RX 7700's rank of 58 comes from actual benchmark data.

Specification Differences

The two cards differ fundamentally in their memory subsystems. The MI325X uses 256 GB of HBM3e on an 8192-bit bus with 6.14 TB/s bandwidth. The RX 7700 uses 16 GB of GDDR6 on a 256-bit bus with 624.1 GB/s bandwidth. Memory clock rates also differ: MI325X runs at 1500 MHz with 6 Gbps effective, while the RX 7700 runs at 2438 MHz with 19.5 Gbps effective.

The compute units show a large disparity. The MI325X has 19,456 shading units, 1,216 texture mapping units, and zero ROPs. The RX 7700 has 2,560 shading units, 160 TMUs, and 96 ROPs. The MI325X also has no ray tracing cores, while the RX 7700 includes 40 RT cores. Pixel rate is 0 MPixel/s for the MI325X and 236.1 GPixel/s for the RX 7700.

Clock speeds favor the RX 7700 in base frequency: 1900 MHz versus 1000 MHz for the MI325X. The boost clocks are closer, with the RX 7700 at 2459 MHz and the MI325X at 2100 MHz. The RX 7700 also has a game clock of 2041 MHz, which the MI325X lacks entirely.

Bus interfaces differ as well. The MI325X uses PCIe 5.0 x16, while the RX 7700 uses PCIe 4.0 x16. The MI325X has no display outputs, whereas the RX 7700 provides 1x HDMI 2.1a, 2x DisplayPort 2.1, and 1x USB Type-C. The RX 7700 supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4; the MI325X supports none of these APIs.

Architecture Differences

The MI325X is built on CDNA 3.0 with the Aqua Vanjaram chip, while the RX 7700 uses RDNA 3.0 with the Navi 32 chip. Both use a 5 nm TSMC process, but transistor counts differ substantially: 153,000 million for the MI325X versus 28,100 million for the RX 7700. Die size is 1017 mm² for the MI325X and 346 mm² for the RX 7700, giving transistor densities of 150.4M per mm² and 81.2M per mm² respectively.

The MI325X belongs to the Instinct (MIx) generation with a predecessor of Radeon Instinct. The RX 7700 is from the Navi III (RX 7000) generation, with a predecessor of Navi II and a successor of Navi IV. The MI325X has no listed successor and no production status, while the RX 7700 is marked as active in production.

The MI325X's texture rate is 2,553.6 GTexel/s, and its FP32 and FP16 throughput are both 81.72 TFLOPS with a 1:1 ratio. The RX 7700 delivers 393.4 GTexel/s texture rate and 25.18 TFLOPS for both FP32 and FP16, also at 1:1. The MI325X's zero ROP count and zero pixel rate reflect its lack of a rasterization pipeline, a core feature of the RDNA architecture in the RX 7700.

Power delivery differs by design philosophy. The MI325X consumes 1000 W TDP as an OAM module with no onboard power connectors, relying on the carrier board. The RX 7700 consumes 200 W TDP through 2x 8-pin connectors. The suggested PSU ratings are 1400 W for the MI325X and 550 W for the RX 7700.

Where Each One Wins

The Radeon RX 7700 wins in every scenario where graphics output or rendering is required. It has display outputs, supports modern graphics APIs, includes 40 ray tracing cores, and has 96 ROPs for pixel processing. Its 267 mm length and dual-slot design fit standard desktop cases, and its 200 W TDP works with common power supplies.

The Instinct MI325X wins in raw compute capacity. Its 256 GB of HBM3e memory with 6.14 TB/s bandwidth dwarfs the RX 7700's 16 GB and 624.1 GB/s. The MI325X's 19,456 shading units and 81.72 TFLOPS FP32 throughput are over three times the RX 7700's 25.18 TFLOPS. Its 2,553.6 GTexel/s texture rate is over six times the RX 7700's 393.4 GTexel/s.

The MI325X also leads in memory bus width with 8192 bits versus 256 bits, and in PCIe interface with version 5.0 versus 4.0. Its OAM module form factor suits dense server deployments where multiple accelerators share a chassis. The RX 7700, by contrast, is a standalone consumer card.

The benchmark data only supports the RX 7700's wins, as it has recorded scores across nine tests. The MI325X has no measured results, so its theoretical advantages cannot be confirmed through the database. The RX 7700's nearest rivals all sit within 1.7% of its average score, showing it competes closely with cards like the RTX 3060 Ti and RX 9060.

For users needing a desktop GPU with display connectivity, gaming API support, and verified benchmark performance, the RX 7700 is the only choice between these two. For operators building compute clusters with high memory capacity and massive throughput, the MI325X presents a specialized option, though its performance remains unverified in the database.