AMD Instinct MI325X vs AMD Radeon RX 7600 XT Comparison

FAQ

Q: What is the fundamental difference between the AMD Instinct MI325X and the AMD Radeon RX 7600 XT?

A: The Instinct MI325X is an accelerator built on the CDNA 3.0 architecture with the Aqua Vanjaram chip, designed for compute workloads. The Radeon RX 7600 XT is a graphics card from the Radeon RX 7000 series using the RDNA 3.0 architecture with the Navi 33 chip, designed for rendering and general GPU tasks.

Q: How do the memory configurations compare?

A: The Instinct MI325X uses 256 GB of HBM3e memory on an 8192-bit bus, delivering 6.14 TB/s of bandwidth. The Radeon RX 7600 XT uses 16 GB of GDDR6 memory on a 128-bit bus, delivering 288.0 GB/s of bandwidth.

Q: What are the power requirements for each card?

A: The Instinct MI325X has a TDP of 1000 W and a suggested PSU of 1400 W. The Radeon RX 7600 XT has a TDP of 190 W and a suggested PSU of 450 W.

Q: Which card has higher clock speeds?

A: The Radeon RX 7600 XT has a base clock of 1980 MHz and a boost clock of 2755 MHz. The Instinct MI325X has a base clock of 1000 MHz and a boost clock of 2100 MHz.

Q: What benchmark data is available for these cards?

A: The database contains no benchmark scores for the Instinct MI325X, with an average benchmark score of 0 and a percentile of 50. The Radeon RX 7600 XT has recorded scores across 3DMark, Geekbench, and Passmark tests, with an average benchmark score of 17083 and a percentile of 60.

Q: What is the form factor difference?

A: The Instinct MI325X is an OAM Module with no power connectors and no display outputs. The Radeon RX 7600 XT is a Dual-slot card with 1x 8-pin power connector and display outputs including 1x HDMI 2.1a and 3x DisplayPort 2.1.

Specification Differences

The two AMD products differ in nearly every measurable specification, reflecting their distinct purposes.

The Instinct MI325X uses a 5 nm process from TSMC, while the Radeon RX 7600 XT uses a 6 nm process from the same foundry. Transistor counts differ dramatically: the MI325X packs 153,000 million transistors on a 1017 mm² die, giving a transistor density of 150.4M per mm². The RX 7600 XT has 13,300 million transistors on a 204 mm² die, with a density of 65.2M per mm².

The compute architecture separates them further. The MI325X has 19,456 shading units and 1,216 TMUs, but its ROP count is 0 and its pixel rate is 0 MPixel/s. The RX 7600 XT has 2,048 shading units, 128 TMUs, and 64 ROPs, with a pixel rate of 176.3 GPixel/s. Texture rates also diverge: the MI325X reaches 2,553.6 GTexel/s, while the RX 7600 XT reaches 352.6 GTexel/s.

FP32 compute shows the MI325X at 81.72 TFLOPS, which is 3.6 times the RX 7600 XT's 22.57 TFLOPS. Both cards deliver FP16 at a 1:1 ratio with their FP32 figures.

The RX 7600 XT has 32 ray tracing cores, while the MI325X lists no ray tracing cores. The interface differs as well: the MI325X uses PCIe 5.0 x16, and the RX 7600 XT uses PCIe 4.0 x8.

API support is exclusive to the RX 7600 XT. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, while the MI325X lists N/A for all three APIs.

Physical dimensions are only recorded for the RX 7600 XT: 204 mm in length and 115 mm in height. The MI325X has no recorded dimensions but is specified as an OAM Module.

The RX 7600 XT has a launch MSRP of 329 USD, was released on 2024-01-23, and its production status is Active. The MI325X was released on 2024-10-09, has no recorded launch MSRP, and no production status is listed.

Architecture Differences

The architectural split is fundamental. The MI325X is built on CDNA 3.0, a compute-focused architecture from the Instinct (MIx) generation. The RX 7600 XT is built on RDNA 3.0, a graphics-focused architecture from the Navi III (RX 7000) generation, with the codename Hotpink Bonefish.

The MI325X uses the Aqua Vanjaram chip and is the successor to the Radeon Instinct line. The RX 7600 XT uses the Navi 33 chip, with its predecessor listed as Navi II and successor as Navi IV.

Memory architecture highlights the compute-versus-graphics divide. The MI325X uses HBM3e memory with an 8192-bit bus, a configuration that maximizes bandwidth for large-scale data movement. The RX 7600 XT uses GDDR6 on a 128-bit bus, a configuration suited to rendering workloads that require lower capacity but faster per-clock access patterns.

The MI325X has no display outputs and no power connectors, indicating it is designed to be installed in a server chassis with external power delivery. The RX 7600 XT includes a 1x 8-pin power connector and full display output support.

Clock behavior also reflects intent. The MI325X runs at a 1000 MHz base and 2100 MHz boost, with memory at 1500 MHz (6 Gbps effective). The RX 7600 XT runs at 1980 MHz base, 2470 MHz game clock, and 2755 MHz boost, with memory at 2250 MHz (18 Gbps effective). The higher clocks on the RX 7600 XT suit latency-sensitive graphics workloads, while the MI325X relies on massive parallelism and memory bandwidth.

The MI325X's lack of ROPs and pixel rate confirms it is not designed for rasterization. The RX 7600 XT's 64 ROPs and 176.3 GPixel/s pixel rate confirm it is a fully capable rasterization product.

Head-to-Head Benchmarks

Direct head-to-head benchmark comparisons are not possible from the recorded data, because the MI325X has no benchmark entries in the database. Its average benchmark score is 0, and its percentile versus all GPUs is 50. The RX 7600 XT has an average benchmark score of 17083 and a percentile of 60.

The RX 7600 XT's recorded benchmarks provide a profile of its performance. In 3DMark Steel Nomad DX12, it scores 2348. Geekbench OpenCL shows 92426, and Geekbench Vulkan shows 48366. Passmark results include: DirectX 10 at 85, DirectX 11 at 167, DirectX 12 at 65, DirectX 9 at 228, G2D at 1030, G3D at 17132, and GPU compute at 8987.

The nearest rivals for the RX 7600 XT, based on average benchmark score, are all NVIDIA or older AMD parts. The NVIDIA GeForce RTX 3070 scores 17208, which is 0.7 percent higher than the RX 7600 XT. The NVIDIA GeForce GTX 690 scores 17037, which is 0.3 percent lower. The AMD Radeon HD 7970M scores 17019, which is 0.4 percent lower. The NVIDIA Tesla M4 scores 16932, which is 0.9 percent lower.

These delta values place the RX 7600 XT in a tight cluster around the 17000 mark. The difference between the RX 7600 XT and its closest rival, the GTX 690, is 0.3 percent, which is within typical run-to-run variance. The RTX 3070 leads the group by less than one percent.

The MI325X has no such comparisons available. Its 50th percentile rank with zero benchmark scores indicates the database has not recorded any performance data for it, so relative positioning against the RX 7600 XT or any other GPU cannot be established from measurements.

What the specification data does show is a massive theoretical compute advantage for the MI325X. Its FP32 throughput of 81.72 TFLOPS is 3.6 times the RX 7600 XT's 22.57 TFLOPS. Its texture rate of 2,553.6 GTexel/s is 7.2 times the RX 7600 XT's 352.6 GTexel/s. Its memory bandwidth of 6.14 TB/s is 21.3 times the RX 7600 XT's 288.0 GB/s.

These figures are not benchmark scores, but they indicate the MI325X is built for a different performance class. The lack of recorded benchmarks for the MI325X means the database cannot confirm how these theoretical specifications translate into actual workload performance.

The Verdict

The recorded data supports a clear separation of roles. The AMD Instinct MI325X is a compute accelerator with enormous memory capacity, memory bandwidth, and FP32 throughput, but it has no display outputs, no ROPs, and no recorded benchmark scores. Its 256 GB of HBM3e memory and 6.14 TB/s bandwidth position it for large-scale data processing, while its 1000 W TDP and OAM Module form factor indicate a server deployment scenario.

The AMD Radeon RX 7600 XT is a graphics card with a full rendering pipeline. Its 64 ROPs, 176.3 GPixel/s pixel rate, 32 ray tracing cores, and direct API support for DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 make it suitable for standard graphics workloads. Its recorded benchmark scores place it in the 60th percentile of all GPUs, with an average score of 17083 and nearest rivals within one percent either direction.

The database contains no benchmark data for the MI325X, so its real-world performance cannot be quantified here. Its specification sheet, however, shows capabilities that the RX 7600 XT does not offer: 256 GB of memory, an 8192-bit bus, and 81.72 TFLOPS of FP32 compute. The RX 7600 XT, in turn, offers features the MI325X lacks: display outputs, rasterization hardware, ray tracing cores, and a consumer PCIe 4.0 x8 interface.

The choice depends on the workload. The data positions the MI325X for compute environments that require massive memory and bandwidth. The data positions the RX 7600 XT for graphics environments that require rendering, display output, and API support. Neither card's recorded data suggests it can substitute for the other.