AMD Instinct MI300A vs AMD Radeon RX 7700 XT Comparison

AMD Instinct MI300A and AMD Radeon RX 7700 XT occupy entirely different corners of the hardware spectrum, yet both are built on TSMC's 5 nm process. The MI300A is an OAM module with no display outputs, designed for compute arrays, while the RX 7700 XT is a dual-slot consumer graphics card with HDMI, DisplayPort, and USB-C outputs. The recorded data shows no overlapping benchmark scores, as the MI300A carries no benchmark entries in the database, leaving the RX 7700 XT as the only scored part in this comparison.

Head-to-Head Benchmarks

The database contains ten benchmark scores for the RX 7700 XT, covering 3DMark, Geekbench, and PassMark suites. The MI300A has no recorded benchmark scores, so direct numerical comparison is impossible. The RX 7700 XT's average benchmark score is 22,549, which places it in the 67th percentile of all GPUs. Its closest rival is the NVIDIA GeForce RTX 5060 Mobile with an average score of 22,435, a delta of 0.5 percent ahead. The RX 7700 XT sits 0.8 percent behind the RTX 4060 Mobile, 1.5 percent behind the RTX 2080, and 1.7 percent ahead of the AMD Radeon RX 5700.

In compute workloads, the RX 7700 XT scores 138,383 in Geekbench OpenCL and 46,443 in Geekbench Vulkan. The PassMark GPU Compute test returns 12,912. For direct X tests, PassMark shows 294 for DirectX 9, 232 for DirectX 11, 119 for DirectX 10, and 79 for DirectX 12. The PassMark G3D score is 22,547, while the G2D score is 1,161. The 3DMark Steel Nomad DX12 test returns 3,316.

The MI300A's raw specifications suggest compute dominance, but without benchmark scores, the data cannot confirm real-world performance. The MI300A delivers 61.29 TFLOPS FP32, while the RX 7700 XT delivers 35.17 TFLOPS FP32. The texture rate for the MI300A is 1,915.2 GTexel/s versus 549.5 GTexel/s for the RX 7700 XT. The pixel rate differs dramatically: the MI300A records 0 MPixel/s with zero ROPs, while the RX 7700 XT has 96 ROPs and 244.2 GPixel/s.

Memory bandwidth heavily favors the MI300A at 5.32 TB/s from 128 GB of HBM3 across an 8192-bit bus. The RX 7700 XT uses 12 GB of GDDR6 on a 192-bit bus for 432.0 GB/s. Clock speeds differ as well: the MI300A boosts to 2100 MHz, while the RX 7700 XT boosts to 2544 MHz with a game clock of 2171 MHz. The RX 7700 XT has 54 ray accelerators and supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. The MI300A lists N/A for DirectX, OpenGL, and Vulkan.

The Verdict

The data shows a clear functional split. The RX 7700 XT is the only part with benchmark scores, making it the sole data-supported choice for any graphics workload that requires rendering, ray tracing, or display output. Its 67th percentile ranking and average score of 22,549 indicate competitive performance against its nearest rivals, specifically within 1.5 percent of the RTX 2080 and 0.8 percent of the RTX 4060 Mobile.

The MI300A cannot be evaluated for gaming or conventional graphics based on recorded measurements. Its zero ROP count and lack of display outputs mean it cannot produce frames for a monitor. Its API support is listed as N/A, reinforcing that it does not target the same software ecosystem. The MI300A's 153,000 million transistors on a 1017 mm² die versus the RX 7700 XT's 28,100 million transistors on a 346 mm² die shows a massive scale difference, but the database lacks benchmark evidence for the MI300A.

The RX 7700 XT also has a launch MSRP of 449 USD, stated once here. The MI300A has no launch MSRP recorded. For any user selecting between these two based on the database, the RX 7700 XT is the only part with measurable performance data. The MI300A remains a specification sheet without validation.

Where Each One Wins

The RX 7700 XT wins in every category where the database has recorded performance. It wins in rasterization, as indicated by its PassMark DirectX scores and G3D score of 22,547. It wins in compute for graphics, shown by its Geekbench OpenCL score of 138,383 and PassMark GPU Compute score of 12,912. It wins in API compatibility, supporting DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. It wins in physical usability, with a dual-slot design, 2x 8-pin power connectors, and four display outputs.

The MI300A wins in raw specification categories. It has more shading units: 14,592 versus 3,456. It has more texture mapping units: 912 versus 216. It has higher FP32 throughput: 61.29 TFLOPS versus 35.17 TFLOPS. It has vastly more memory: 128 GB versus 12 GB, with bandwidth of 5.32 TB/s versus 432.0 GB/s. It uses PCIe 5.0 x16 versus PCIe 4.0 x16. Its power draw is 750 W versus 245 W, with a suggested PSU of 1150 W versus 550 W.

The transistor density also favors the MI300A at 150.4M per mm² versus 81.2M per mm². The MI300A uses HBM3 memory at 1300 MHz, while the RX 7700 XT uses GDDR6 at 2250 MHz. The MI300A has no power connectors, as it is an OAM module, while the RX 7700 XT requires 2x 8-pin connectors.

FAQ

Q: Does the AMD Instinct MI300A have any benchmark scores in the database?

A: No. The MI300A has no recorded benchmark entries, while the RX 7700 XT has ten scores across 3DMark, Geekbench, and PassMark.

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

A: The RX 7700 XT averages 22,549, which is 0.5 percent ahead of the RTX 5060 Mobile, 0.8 percent behind the RTX 4060 Mobile, 1.5 percent behind the RTX 2080, and 1.7 percent ahead of the RX 5700.

Q: What is the memory configuration difference?

A: The MI300A has 128 GB of HBM3 on an 8192-bit bus with 5.32 TB/s bandwidth. The RX 7700 XT has 12 GB of GDDR6 on a 192-bit bus with 432.0 GB/s bandwidth.

Q: Can the MI300A output video to a display?

A: No. The MI300A lists no display outputs and has zero ROPs, while the RX 7700 XT has 96 ROPs and outputs via 1x HDMI 2.1a, 2x DisplayPort 2.1, and 1x USB Type-C.

Q: What are the FP32 compute figures?

A: The MI300A delivers 61.29 TFLOPS FP32, while the RX 7700 XT delivers 35.17 TFLOPS FP32. The RX 7700 XT also lists FP16 at 35.17 TFLOPS with a 1:1 ratio.

Q: Which part has higher clock speeds?

A: The RX 7700 XT has a higher boost clock at 2544 MHz versus 2100 MHz for the MI300A. The RX 7700 XT also has a game clock of 2171 MHz, while the MI300A's base clock is 1000 MHz versus 1435 MHz for the RX 7700 XT.

Architecture Differences

The MI300A uses the CDNA 3.0 architecture with the Aqua Vanjaram chip, while the RX 7700 XT uses RDNA 3.0 with the Navi 32 chip. Both are 5 nm TSMC parts, but the MI300A packs 153,000 million transistors on a 1017 mm² die, while the RX 7700 XT packs 28,100 million transistors on a 346 mm² die. The transistor density is 150.4M per mm² for the MI300A and 81.2M per mm² for the RX 7700 XT.

The MI300A belongs to the Instinct (MIx) generation and is a successor to Radeon Instinct. The RX 7700 XT is part of the Radeon RX 7000 series, generation Navi III (RX 7000), with a predecessor of Navi II and a successor of Navi IV. The MI300A has no codename listed, while the RX 7700 XT has the codename Wheat Nas.

Shading unit counts diverge sharply: 14,592 for the MI300A versus 3,456 for the RX 7700 XT. Texture mapping units are 912 versus 216. The MI300A has no ROPs, while the RX 7700 XT has 96. The RX 7700 XT has 54 ray accelerators; the MI300A has no ray accelerator count listed. Neither part lists tensor cores.

The MI300A uses HBM3 memory at 1300 MHz with a 5.2 Gbps effective rate, while the RX 7700 XT uses GDDR6 at 2250 MHz with an 18 Gbps effective rate. The MI300A's memory bus is 8192 bits, compared to 192 bits for the RX 7700 XT. The MI300A's texture rate is 1,915.2 GTexel/s, and its pixel rate is 0 MPixel/s. The RX 7700 XT has a texture rate of 549.5 GTexel/s and a pixel rate of 244.2 GPixel/s.

The MI300A uses a PCIe 5.0 x16 interface, while the RX 7700 XT uses PCIe 4.0 x16. The MI300A is an OAM Module with no power connectors and a 750 W TDP. The RX 7700 XT is dual-slot, requires 2x 8-pin power connectors, and has a 245 W TDP. The suggested PSU is 1150 W for the MI300A and 550 W for the RX 7700 XT. The RX 7700 XT measures 267 mm in length, 135 mm in height, and 50 mm in width. The MI300A has no dimensions listed.

The RX 7700 XT supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300A lists N/A for all three APIs. Release dates are close: the MI300A launched on 2023-12-05, while the RX 7700 XT launched on 2023-09-05. The RX 7700 XT has an active production status; the MI300A has no production status listed. The RX 7700 XT has a launch MSRP of 449 USD, while the MI300A has none recorded.