AMD Instinct MI300X vs AMD Radeon RX 7700 XT Comparison

Where Each One Wins

The AMD Instinct MI300X and the AMD Radeon RX 7700 XT occupy completely different positions in the database. The recorded data shows a single head-to-head benchmark result, and it belongs entirely to the Instinct MI300X. In the Geekbench OpenCL test, the Instinct MI300X scores 317994, while the Radeon RX 7700 XT scores 138383. That is a 129.8% advantage for the Instinct part, the only direct comparison available between the two.

The Instinct MI300X sits at the 100th percentile among all GPUs in the database, meaning the recorded measurements place it above every other entry. Its nearest rivals confirm the scale of its positioning. It trails the NVIDIA H200 NVL by 5%, with the H200 NVL scoring 334891. It sits 7.5% above the NVIDIA L40S, which scores 295763. It is 8% behind the NVIDIA B200, which scores 345482, and 10.7% ahead of the NVIDIA RTX 6000 Ada Generation, which scores 287237. These deltas place the MI300X in the top tier of compute-oriented accelerators, regardless of the specific competitor.

The Radeon RX 7700 XT, by contrast, sits at the 67th percentile. Its average benchmark score is 22549, and its nearest rivals are a mix of mobile and older desktop parts. It is 0.5% ahead of the NVIDIA GeForce RTX 5060 Mobile, which scores 22435. It trails the NVIDIA GeForce RTX 4060 Mobile by 0.8%, with that part scoring 22729. It is 1.5% behind the NVIDIA GeForce RTX 2080, which scores 22895, and 1.7% ahead of the AMD Radeon RX 5700, which scores 22170. The RX 7700 XT is a mainstream graphics card competing in a tight cluster of mid-range results, not a compute leader.

The use-case split is therefore clear. The Instinct MI300X wins the only shared benchmark outright, and its percentile rank indicates dominance across the database. The Radeon RX 7700 XT wins no head-to-head comparison because only one exists, and the data shows no scenario in which it leads the MI300X. The RX 7700 XT does, however, offer a broader range of recorded tests, including DirectX 9, 10, 11, and 12, Vulkan, 2D, 3D, and compute workloads. The MI300X has only one recorded benchmark. That asymmetry matters when interpreting the numbers.

FAQ

Q: Which GPU wins the only direct benchmark comparison?

A: The AMD Instinct MI300X wins the Geekbench OpenCL test with a score of 317994 against 138383 for the AMD Radeon RX 7700 XT, a 129.8% advantage.

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

A: The MI300X is 5% behind the NVIDIA H200 NVL, 7.5% ahead of the NVIDIA L40S, 8% behind the NVIDIA B200, and 10.7% ahead of the NVIDIA RTX 6000 Ada Generation.

Q: How does the Radeon RX 7700 XT compare to its nearest rivals?

A: The RX 7700 XT is 0.5% ahead of the NVIDIA GeForce RTX 5060 Mobile, 0.8% behind the NVIDIA GeForce RTX 4060 Mobile, 1.5% behind the NVIDIA GeForce RTX 2080, and 1.7% ahead of the AMD Radeon RX 5700.

Q: What is the percentile ranking of each GPU?

A: The Instinct MI300X is at the 100th percentile among all GPUs, while the Radeon RX 7700 XT is at the 67th percentile.

Q: Does the Radeon RX 7700 XT win any benchmark against the Instinct MI300X?

A: No. The database contains one head-to-head result, and the Instinct MI300X wins it. The RX 7700 XT has zero wins in this pairing.

Q: What API support does each GPU offer?

A: The Radeon RX 7700 XT supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The Instinct MI300X has no recorded API support in the database, listed as N/A for DirectX, OpenGL, and Vulkan.

Head-to-Head Benchmarks

The only direct comparison in the database is the Geekbench OpenCL test. The AMD Instinct MI300X delivers 317994 points, and the AMD Radeon RX 7700 XT delivers 138383 points. The delta is 129.8% in favor of the Instinct part. That is a massive performance gap, larger than the differences seen between the MI300X and any of its nearest rivals. For context, the MI300X is only 8% behind the NVIDIA B200 and 5% behind the NVIDIA H200 NVL, yet it more than doubles the RX 7700 XT in this workload.

The RX 7700 XT has no countervailing win in this pairing. The database records zero wins for the RX 7700 XT against the MI300X. Its best results come in other tests, such as PassMark G3D with 22547 points and PassMark GPU Compute with 12912 points, but those tests have no corresponding MI300X score, so they cannot be compared directly.

The MI300X also carries a much higher average benchmark score of 317994, exactly matching its single Geekbench OpenCL result. The RX 7700 XT has an average benchmark score of 22549, which is pulled from a set of ten different tests covering legacy DirectX versions, 2D, 3D, and compute. The difference in average scores is 295445 points, but that comparison is not apples-to-apples because the test suites differ. The head-to-head Geekbench OpenCL result remains the only controlled comparison, and it strongly favors the Instinct MI300X.

Specification Differences

The two GPUs diverge sharply on memory. The AMD Instinct MI300X uses 192 GB of HBM3 on an 8192-bit bus, delivering 5.32 TB/s of bandwidth. The AMD Radeon RX 7700 XT uses 12 GB of GDDR6 on a 192-bit bus, delivering 432.0 GB/s. The memory clock also differs: the MI300X runs at 1300 MHz with 5.2 Gbps effective, while the RX 7700 XT runs at 2250 MHz with 18 Gbps effective. The MI300X has far more capacity and bandwidth, while the RX 7700 XT has a faster effective memory clock.

The compute resources differ substantially. The MI300X has 19456 shading units and 1216 texture mapping units, but no ROPs, with a pixel rate of 0 MPixel/s and a texture rate of 2553.6 GTexel/s. The RX 7700 XT has 3456 shading units, 216 TMUs, and 96 ROPs, with a pixel rate of 244.2 GPixel/s and a texture rate of 549.5 GTexel/s. The MI300X has no ROPs because it is not designed for rasterization output, while the RX 7700 XT is a full graphics part.

Clock speeds also differ. The MI300X has a base clock of 1000 MHz and a boost clock of 2100 MHz, with no game clock. The RX 7700 XT has a base clock of 1435 MHz, a boost clock of 2544 MHz, and a game clock of 2171 MHz. The RX 7700 XT runs at higher frequencies in every position.

Power and physical specifications are far apart. The MI300X has a TDP of 750 W, uses an OAM Module slot width, has no power connectors, and requires a 1150 W suggested PSU. The RX 7700 XT has a TDP of 245 W, uses a Dual-slot design, requires 2x 8-pin power connectors, and needs a 550 W suggested PSU. The MI300X has no display outputs, while the RX 7700 XT provides 1x HDMI 2.1a, 2x DisplayPort 2.1, and 1x USB Type-C. The bus interface differs as well: the MI300X uses PCIe 5.0 x16, and the RX 7700 XT uses PCIe 4.0 x16. The RX 7700 XT has physical dimensions of 267 mm length, 135 mm height, and 50 mm width; the MI300X has no recorded dimensions.

Architecture Differences

The AMD Instinct MI300X uses the CDNA 3.0 architecture, built on the Aqua Vanjaram chip. The AMD Radeon RX 7700 XT uses the RDNA 3.0 architecture, built on the Navi 32 chip with the codename Wheat Nas. Both are fabricated on a 5 nm process at TSMC, but the transistor counts and die sizes differ enormously. The MI300X has 153,000 million transistors on a 1017 mm² die, yielding a transistor density of 150.4M per mm². The RX 7700 XT has 28,100 million transistors on a 346 mm² die, yielding a density of 81.2M per mm². The MI300X packs more than five times the transistors and nearly three times the die area.

The MI300X belongs to the Instinct (MIx) generation and succeeds the Radeon Instinct line. It was released on 2023-12-05. The RX 7700 XT belongs to the Navi III (RX 7000) series, succeeds the Navi II generation, and its successor is Navi IV. It was released on 2023-09-05. The MI300X has no recorded production status, while the RX 7700 XT is listed as Active.

The MI300X has no RT cores recorded, no tensor cores, and no API support in the database. The RX 7700 XT has 54 RT cores, no tensor cores, and full API support including DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300X has a launch MSRP of null, while the RX 7700 XT has a launch MSRP of 449 USD. The architectural direction is clear: CDNA 3.0 on the MI300X targets compute acceleration with massive memory and bandwidth, while RDNA 3.0 on the RX 7700 XT targets graphics rendering with rasterization units and display outputs. The MI300X has no display outputs, no ROPs, and no graphics API support, which confirms its role as a compute accelerator rather than a graphics card.