AMD Instinct MI300X vs AMD Radeon RX 7600M Comparison

The Verdict

The AMD Instinct MI300X and AMD Radeon RX 7600M occupy entirely different segments of the GPU market, and the benchmark data reflects that separation clearly. The MI300X delivers a Geekbench OpenCL score of 317,994, placing it in the 100th percentile of all GPUs in the database. The RX 7600M scores 63,775, which lands in the 89th percentile. The MI300X wins the only recorded head-to-head benchmark by 398.6%.

The MI300X is the choice for compute-intensive workloads that demand massive memory capacity and raw throughput. Its nearest rivals include the NVIDIA B200, which scores 345,482 (8% higher), and the NVIDIA H200 NVL at 334,891 (5% higher). The MI300X sits above the NVIDIA L40S (295,763, 7.5% behind) and the NVIDIA RTX 6000 Ada Generation (287,237, 10.7% behind). This is a data center accelerator with no display outputs, designed for servers.

The RX 7600M is a mobile graphics processor for laptops. Its nearest rivals are clustered tightly around its score: the AMD Radeon RX 9060 XT LP at 63,830 (0.1% higher), the NVIDIA CMP 30HX at 63,842 (0.1% higher), the AMD Radeon Pro Vega 56 at 63,693 (0.1% lower), and the AMD Radeon Pro WX 9100 at 64,212 (0.7% higher). The RX 7600M supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, and its display outputs are portable device dependent.

Users who need a server accelerator for memory-heavy parallel workloads should choose the MI300X. Users who need a mobile GPU with modern graphics API support should choose the RX 7600M. There is no overlap in their intended use cases.

Architecture Differences

The MI300X uses the CDNA 3.0 architecture on the Aqua Vanjaram chip, built on a 5 nm TSMC process. The RX 7600M uses the RDNA 3.0 architecture on the Navi 33 chip, built on a 6 nm TSMC process. Both are AMD products, but they are designed for different workloads: CDNA targets compute acceleration, while RDNA targets graphics rendering.

The transistor counts differ by an order of magnitude. The MI300X contains 153,000 million transistors on a 1017 mm² die, giving a transistor density of 150.4M per mm². The RX 7600M contains 13,300 million transistors on a 204 mm² die, with a density of 65.2M per mm². The MI300X die is roughly five times larger in area and has roughly 11.5 times more transistors.

Memory architecture also diverges sharply. The MI300X uses 192 GB of HBM3 on an 8192-bit bus, delivering 5.32 TB/s of bandwidth. The RX 7600M uses 8 GB of GDDR6 on a 128-bit bus, delivering 256.0 GB/s of bandwidth. The MI300X memory bus is 64 times wider, and its bandwidth is roughly 20.8 times higher.

The clock profiles differ as well. The MI300X runs at a 1000 MHz base and 2100 MHz boost, with memory at 1300 MHz (5.2 Gbps effective). The RX 7600M runs at a 1500 MHz base, 2410 MHz boost, and 2070 MHz game clock, with memory at 2000 MHz (16 Gbps effective). The RX 7600M has higher raw clock speeds, but the MI300X compensates through vastly more compute units and memory parallelism.

The MI300X has no display outputs and no supported graphics APIs in the database. The RX 7600M supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300X uses an OAM Module slot width and has no power connectors listed; the RX 7600M is an IGP with no power connectors and a portable device dependent display output.

Head-to-Head Benchmarks

The database records one head-to-head benchmark between these two GPUs: Geekbench OpenCL. The MI300X scores 317,994 against the RX 7600M's 63,775. The MI300X wins by 398.6%. This means the MI300X delivers roughly five times the OpenCL performance of the RX 7600M.

The MI300X also stands at the 100th percentile of all GPUs in the database, meaning no recorded GPU scores higher. Its average benchmark score is 317,994. The RX 7600M sits at the 89th percentile with an average score of 63,775.

The RX 7600M's closest competitor is the AMD Radeon RX 9060 XT LP, which scores 63,830, a 0.1% margin. The NVIDIA CMP 30HX is equally close at 63,842, also 0.1% higher. These differences are within run-to-run variance, so the RX 7600M is effectively tied with its nearest rivals in OpenCL compute.

The MI300X's competitive position is more spread out. The NVIDIA B200 leads by 8%, and the NVIDIA H200 NVL leads by 5%. The MI300X leads the NVIDIA L40S by 7.5% and the NVIDIA RTX 6000 Ada Generation by 10.7%. This places the MI300X in the upper tier of data center accelerators, trading positions with NVIDIA's flagship offerings.

In terms of texture rate, the MI300X delivers 2,553.6 GTexel/s versus the RX 7600M's 269.9 GTexel/s, a gap of roughly 9.5 times. The MI300X reports a pixel rate of 0 MPixel/s due to its lack of a raster output stage, while the RX 7600M delivers 154.2 GPixel/s. The MI300X has no ROPs listed, while the RX 7600M has 64.

Specification Differences

The two GPUs differ across nearly every recorded specification field.

Process and die: The MI300X uses 5 nm TSMC; the RX 7600M uses 6 nm TSMC. The MI300X has 153,000 million transistors on a 1017 mm² die; the RX 7600M has 13,300 million on 204 mm². Transistor density is 150.4M per mm² for the MI300X and 65.2M per mm² for the RX 7600M.

Clocks: The MI300X base clock is 1000 MHz with a 2100 MHz boost. The RX 7600M base is 1500 MHz, boost is 2410 MHz, and game clock is 2070 MHz. Memory clock is 1300 MHz (5.2 Gbps effective) for the MI300X and 2000 MHz (16 Gbps effective) for the RX 7600M.

Memory: The MI300X has 192 GB HBM3 on an 8192-bit bus with 5.32 TB/s bandwidth. The RX 7600M has 8 GB GDDR6 on a 128-bit bus with 256.0 GB/s bandwidth.

Compute units: The MI300X has 19,456 shading units, 1,216 TMUs, and 0 ROPs. The RX 7600M has 1,792 shading units, 112 TMUs, and 64 ROPs. The RX 7600M lists 28 ray tracing cores; the MI300X lists none.

Rates: The MI300X pixel rate is 0 MPixel/s; the RX 7600M is 154.2 GPixel/s. Texture rate is 2,553.6 GTexel/s for the MI300X and 269.9 GTexel/s for the RX 7600M. FP32 is 81.72 TFLOPS for the MI300X and 17.27 TFLOPS for the RX 7600M. FP16 is 81.72 TFLOPS (1:1) for the MI300X and 34.55 TFLOPS (2:1) for the RX 7600M.

Power and form factor: The MI300X has a 750 W TDP with a suggested PSU of 1150 W. The RX 7600M has a 90 W TDP with no suggested PSU listed. The MI300X is an OAM Module; the RX 7600M is an IGP. Both list no power connectors.

Interface and outputs: The MI300X uses PCIe 5.0 x16; the RX 7600M uses PCIe 4.0 x16. The MI300X has no display outputs; the RX 7600M outputs are portable device dependent. The MI300X has no supported graphics APIs in the database; the RX 7600M supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4.

Release and lineage: The MI300X released on 2023-12-05 and its predecessor is Radeon Instinct. The RX 7600M released on 2023-01-03, its predecessor is Polaris Mobile, and it is part of the Radeon RX 7000 series with the Hotpink Bonefish codename. The RX 7600M production status is Active; the MI300X production status is not listed.

FAQ

Q: Which GPU has the higher Geekbench OpenCL score?

A: The AMD Instinct MI300X scores 317,994, which is 398.6% higher than the AMD Radeon RX 7600M's 63,775.

Q: How does the MI300X compare to its nearest rivals?

A: The MI300X is 5% behind the NVIDIA H200 NVL (334,891), 8% behind the NVIDIA B200 (345,482), 7.5% ahead of the NVIDIA L40S (295,763), and 10.7% ahead of the NVIDIA RTX 6000 Ada Generation (287,237).

Q: How does the RX 7600M compare to its nearest rivals?

A: The RX 7600M is 0.1% behind the AMD Radeon RX 9060 XT LP (63,830), 0.1% behind the NVIDIA CMP 30HX (63,842), 0.1% ahead of the AMD Radeon Pro Vega 56 (63,693), and 0.7% behind the AMD Radeon Pro WX 9100 (64,212).

Q: What memory configurations do the two GPUs use?

A: The MI300X has 192 GB of HBM3 on an 8192-bit bus with 5.32 TB/s bandwidth. The RX 7600M has 8 GB of GDDR6 on a 128-bit bus with 256.0 GB/s bandwidth.

Q: What are the power requirements for each GPU?

A: The MI300X has a 750 W TDP and a suggested PSU of 1150 W. The RX 7600M has a 90 W TDP and no suggested PSU listed.

Q: Which GPU supports graphics APIs?

A: The RX 7600M supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300X has no supported graphics APIs listed in the database.