AMD Instinct MI300A vs AMD Radeon RX 9070 XT Comparison

AMD Instinct MI300A and AMD Radeon RX 9070 XT are both AMD products, but they serve entirely different purposes. The MI300A is a data center accelerator built on CDNA 3.0, while the RX 9070 XT is a consumer graphics card on RDNA 4.0. The recorded data shows no shared benchmark results between the two, so direct performance comparisons rely on their individual specifications and available test scores.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark results for these two products. The MI300A has an empty benchmark list and an average benchmark score of zero, while the RX 9070 XT has a substantial set of recorded scores across multiple tests.

The RX 9070 XT delivers an average benchmark score of 13543. Its strongest recorded result is in Geekbench Vulkan with 65879 points, followed by Passmark G3D at 26795 points. In Geekbench OpenCL, it scores 17428. The Passmark GPU compute test shows 15864 points. DirectX-specific tests are lower, with Passmark DirectX 9 at 353, DirectX 11 at 292, DirectX 10 at 154, and DirectX 12 at 78. The Passmark G2D test records 1328 points.

Comparing the RX 9070 XT to its nearest rivals in the database, it sits 0.1% ahead of the AMD Radeon HD 7770M, which holds an average score of 13536. It leads the NVIDIA GeForce GTX 570 by 0.2%, with that card at 13515. The NVIDIA P106-090 trails by 0.5% at 13470, and the AMD Radeon Pro 555 is 1% behind at 13407. These are very small margins, indicating the RX 9070 XT sits at the edge of a tightly clustered group in this particular portion of the database.

The MI300A has no recorded benchmark scores, so no direct wins can be attributed to it. Its percentile ranking of 50 against all GPUs reflects its position as a compute accelerator rather than a graphics card, and the lack of display outputs confirms it is not designed for the same workloads as the RX 9070 XT.

FAQ

Q: Which product has a higher boost clock?

A: The RX 9070 XT boosts to 2970 MHz, while the MI300A boosts to 2100 MHz.

Q: How much memory does each product have?

A: The MI300A has 128 GB of HBM3 memory on an 8192-bit bus with 5.32 TB/s bandwidth. The RX 9070 XT has 16 GB of GDDR6 memory on a 256-bit bus with 644.6 GB/s bandwidth.

Q: Which product has a higher transistor count?

A: The MI300A has 153,000 million transistors on a 1017 mm² die, while the RX 9070 XT has 53,900 million transistors on a 357 mm² die.

Q: Does the RX 9070 XT support DirectX 12 Ultimate?

A: Yes, the RX 9070 XT lists DirectX 12 Ultimate (12_2) support, along with OpenGL 4.6 and Vulkan 1.4. The MI300A lists N/A for DirectX, OpenGL, and Vulkan.

Q: What is the power consumption of each product?

A: The MI300A has a TDP of 750 W and requires a suggested PSU of 1150 W. The RX 9070 XT has a TDP of 304 W and requires a suggested PSU of 700 W.

Q: Which product has a higher FP32 compute throughput?

A: The MI300A delivers 61.29 TFLOPS FP32, while the RX 9070 XT delivers 48.66 TFLOPS FP32.

Architecture Differences

The MI300A uses the Aqua Vanjaram chip with CDNA 3.0 architecture, fabricated on a 5 nm process at TSMC. It packs 153,000 million transistors into a 1017 mm² die, achieving a transistor density of 150.4M per mm². The RX 9070 XT uses the Navi 48 chip with RDNA 4.0 architecture, fabricated on a 4 nm process at TSMC. Its die size is 357 mm² with 53,900 million transistors, giving a density of 151.0M per mm². The density figures are nearly identical despite the massive difference in scale.

The MI300A is built for compute workloads with 14592 shading units and 912 texture mapping units. It has zero ROPs and a pixel rate of 0 MPixel/s, confirming it does no traditional rasterization. Its memory subsystem uses HBM3 across an 8192-bit bus, delivering 5.32 TB/s of bandwidth. The RX 9070 XT has 4096 shading units, 256 TMUs, and 128 ROPs, with a pixel rate of 380.2 GPixel/s. It includes 64 ray tracing cores and uses GDDR6 memory on a 256-bit bus for 644.6 GB/s of bandwidth.

The RX 9070 XT supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, making it compatible with modern graphics APIs. The MI300A lists N/A for all three, reinforcing its role as a non-rendering accelerator. The MI300A has no display outputs, while the RX 9070 XT offers 1x HDMI 2.1b and 3x DisplayPort 2.1a.

Clock behavior differs sharply. The MI300A runs at a 1000 MHz base and 2100 MHz boost. The RX 9070 XT has a 1660 MHz base, a 2400 MHz game clock, and a 2970 MHz boost. The RX 9070 XT also runs its memory at 2518 MHz with 20.1 Gbps effective speed, compared to the MI300A's 1300 MHz memory clock at 5.2 Gbps effective.

Specification Differences

The two products diverge on nearly every measurable specification. The MI300A uses a 5 nm process; the RX 9070 XT uses 4 nm. Transistor counts are 153,000 million versus 53,900 million. Die sizes are 1017 mm² versus 357 mm². Transistor density is essentially equal at 150.4M versus 151.0M per mm².

Base clocks are 1000 MHz for the MI300A and 1660 MHz for the RX 9070 XT. Boost clocks are 2100 MHz versus 2970 MHz. The RX 9070 XT adds a game clock of 2400 MHz, which the MI300A does not have. Memory clocks are 1300 MHz (5.2 Gbps effective) versus 2518 MHz (20.1 Gbps effective).

Memory capacity is 128 GB of HBM3 versus 16 GB of GDDR6. Bus widths are 8192 bit versus 256 bit. Bandwidth is 5.32 TB/s versus 644.6 GB/s. Shading units are 14592 versus 4096. TMUs are 912 versus 256. ROPs are 0 versus 128. The MI300A has no ray tracing cores listed; the RX 9070 XT has 64.

Pixel rate is 0 MPixel/s versus 380.2 GPixel/s. Texture rate is 1,915.2 GTexel/s versus 760.3 GTexel/s. FP32 compute is 61.29 TFLOPS versus 48.66 TFLOPS. The RX 9070 XT also lists FP16 at 48.66 TFLOPS with a 1:1 ratio, while the MI300A does not list an FP16 figure.

TDP is 750 W versus 304 W. The MI300A uses an OAM Module slot width with no power connectors, while the RX 9070 XT is a Dual-slot card with 2x 8-pin connectors. Suggested PSU is 1150 W versus 700 W. The MI300A has no display outputs; the RX 9070 XT has 1x HDMI 2.1b and 3x DisplayPort 2.1a. The RX 9070 XT is listed as Active in production status, while the MI300A has no production status recorded. Release dates are December 5, 2023 for the MI300A and March 5, 2025 for the RX 9070 XT.

The Verdict

The data describes two products with no overlapping use cases. The MI300A is a compute accelerator with massive memory capacity, extreme bandwidth, and no graphics output. It leads in FP32 throughput, memory bandwidth, shading units, and texture rate. Its 61.29 TFLOPS FP32 output is 26% higher than the RX 9070 XT's 48.66 TFLOPS. Its 5.32 TB/s memory bandwidth is over eight times the RX 9070 XT's 644.6 GB/s.

The RX 9070 XT is a consumer graphics card with display outputs, ray tracing cores, and modern graphics API support. It has higher clocks across the board, a smaller process node, and far lower power consumption at 304 W versus 750 W. It also has the only available benchmark data in the database, with an average score of 13543 and a 55th percentile ranking among all GPUs.

The MI300A's 50th percentile ranking with zero benchmark scores suggests it is outside the normal graphics benchmarking pipeline. This is consistent with a product that has no display outputs and no graphics API support.

Where Each One Wins

The MI300A wins on raw compute scale. Its 61.29 TFLOPS FP32, 1,915.2 GTexel/s texture rate, 128 GB HBM3 memory, and 5.32 TB/s bandwidth make it the stronger choice for data center compute workloads that require large memory pools and high throughput. Its 14592 shading units and 912 TMUs dwarf the RX 9070 XT's 4096 shading units and 256 TMUs.

The RX 9070 XT wins on graphics-oriented features. It has 128 ROPs and a 380.2 GPixel/s pixel rate, while the MI300A has zero ROPs and no pixel output. The RX 9070 XT brings 64 ray tracing cores, DirectX 12 Ultimate support, and Vulkan 1.4. It has display outputs for direct connection to monitors. Its higher boost clock of 2970 MHz versus 2100 MHz gives it an advantage in latency-sensitive rendering tasks. Its 16 GB of GDDR6 memory is smaller but appropriate for consumer workloads.

Power efficiency favors the RX 9070 XT. At 304 W TDP with a 700 W suggested PSU, it requires less than half the power budget of the MI300A, which draws 750 W and needs a 1150 W PSU. The RX 9070 XT also has a more conventional physical design with dual-slot cooling and 2x 8-pin connectors, while the MI300A uses an OAM Module format.

The RX 9070 XT is the only one of the two with recorded benchmark scores. Its 13543 average and 55th percentile ranking place it in the upper half of the database. The MI300A has no scores, so its performance in real applications cannot be quantified from the recorded data. The choice between them depends entirely on whether the workload requires graphics output and consumer API support, or massive compute and memory resources in an accelerator form factor.