AMD Instinct MI350P vs AMD Radeon RX 7800 XT Comparison

Head-to-Head Benchmarks

The database contains no shared benchmark entries for the AMD Instinct MI350P and the AMD Radeon RX 7800 XT. The head-to-head comparison table is empty, and neither part has a recorded win in direct testing. This absence of overlap is expected given the fundamental differences in their intended roles: the MI350P is an accelerator without display outputs, while the RX 7800 XT is a consumer graphics card with a full suite of graphics APIs.

The RX 7800 XT has a substantial body of recorded measurements. Its average benchmark score across all tests is 11627, placing it in the 51st percentile of all GPUs in the database. The strongest single result for the RX 7800 XT comes from the Geekbench Vulkan test, where it scores 54228. The OpenCL result is considerably lower at 18290, indicating that the card's Vulkan driver path delivers significantly higher throughput than its OpenCL path in this workload. The 3DMark Steel Nomad DX12 test returns 4157, a moderate result that reflects the demanding nature of that workload.

The PassMark suite provides a fuller picture of the RX 7800 XT's rasterization capabilities. The G3D score is 24176, while the G2D score is only 1177. Legacy DirectX tests show a wide spread: DirectX 9 scores 304, DirectX 11 scores 249, DirectX 10 scores 121, and DirectX 12 scores 93. These numbers are not directly comparable to modern GPU scores because the PassMark DirectX tests are synthetic and measure specific feature paths. The GPU compute score of 13473 sits well below the G3D score, which suggests that the card's compute throughput, while respectable, is not its primary strength.

The MI350P has no benchmark scores recorded in the database. Its average benchmark score is listed as 0, and its percentile rank is 50, which is the median value assigned when no measurements exist. This does not imply the card is slow; rather, it means the database has not yet accumulated test results for this accelerator. The raw specification data, however, allows for a comparison of theoretical capabilities.

In raw throughput terms, the two cards are closer than their market positions would suggest. The MI350P delivers 36.04 TFLOPS of FP32 compute, while the RX 7800 XT delivers 37.32 TFLOPS. The RX 7800 XT is 3.5% ahead in this metric. The FP16 numbers are identical to the FP32 figures for both cards, as each uses a 1:1 ratio. The MI350P has a much higher texture rate at 1126.4 GTexel/s compared to 583.2 GTexel/s for the RX 7800 XT, a 93% advantage. This difference stems from the MI350P's 512 texture mapping units versus 240 for the RX 7800 XT.

The pixel rate tells the opposite story. The MI350P is listed at 0 MPixel/s, meaning it has no raster output pipeline capability. The RX 7800 XT produces 233.3 GPixel/s from its 96 render output units. This is the clearest functional separation between the two: one card is built to rasterize, the other is not.

Memory bandwidth is where the MI350P establishes an overwhelming lead. Its 8.19 TB/s of bandwidth, delivered through HBM3e memory on an 8192-bit bus, is more than 13 times the RX 7800 XT's 624.1 GB/s from GDDR6 on a 256-bit bus. The MI350P also offers 144 GB of memory versus 16 GB, a 9x capacity advantage. These figures reflect the MI350P's design for large model residency and data movement, whereas the RX 7800 XT's 16 GB is sized for gaming and mainstream compute.

The nearest rivals for the RX 7800 XT in the database are instructive for context. The NVIDIA GeForce GTX 1660 averages 11680, which is 0.5% higher than the RX 7800 XT's 11627. The AMD Radeon Pro 5500M scores 11528, putting the RX 7800 XT 0.9% ahead. The NVIDIA Tesla K20c scores 11479, making the RX 7800 XT 1.3% faster. The AMD Radeon RX 6500 XT scores 11842, which places it 1.8% above the RX 7800 XT. These deltas are all within 2%, which indicates that the RX 7800 XT's average score sits in a tightly clustered group of mid-range parts. The RX 7800 XT's 51st percentile rank confirms that it is a median performer in the overall GPU distribution.

The Verdict

The data separates these two cards cleanly along functional lines. The AMD Instinct MI350P is an accelerator with no display outputs, no graphics API support, and no rasterization hardware. Its 0 MPixel/s pixel rate and N/A status for DirectX, OpenGL, and Vulkan make it unsuitable for any interactive graphics workload. The AMD Radeon RX 7800 XT, by contrast, supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, and it includes 60 ray tracing cores. It produces 233.3 GPixel/s and is listed as an active production product.

For compute workloads that fit within its capabilities, the MI350P offers 144 GB of HBM3e memory and 8.19 TB/s of bandwidth, along with 36.04 TFLOPS of FP32 throughput. These specifications target large-scale inference or training workloads where memory capacity and bandwidth dominate. The RX 7800 XT cannot approach this memory subsystem; its 16 GB and 624.1 GB/s are orders of magnitude smaller. However, the RX 7800 XT's FP32 throughput of 37.32 TFLOPS slightly exceeds the MI350P's, which means that for compute tasks that fit in 16 GB, the RX 7800 XT is not slower in raw math throughput.

The RX 7800 XT is the only one of the two with any recorded benchmark scores. Its average of 11627 and its tight grouping with the GTX 1660, Pro 5500M, Tesla K20c, and RX 6500 XT show that it performs as a mid-range graphics card. The MI350P has no scores, so no measured performance claim can be made for it. The 50th percentile rank assigned to the MI350P is a placeholder, not a measurement.

The MI350P's power requirements are substantial. It draws a 600 W TDP and requires a 1000 W suggested PSU with a single 16-pin connector. The RX 7800 XT draws 263 W TDP with a 600 W suggested PSU and two 8-pin connectors. The MI350P is also a dual-slot card at 40 mm width, while the RX 7800 XT is dual-slot at 50 mm width. Both share the same 267 mm length and 111 mm height.

The RX 7800 XT carries a launch MSRP of 499 USD. The MI350P has no launch MSRP recorded in the database. The RX 7800 XT was released on September 5, 2023, and the MI350P is dated May 6, 2026, which places it in the future relative to the RX 7800 XT's release.

FAQ

Q: Which card has higher FP32 compute throughput?

A: The RX 7800 XT delivers 37.32 TFLOPS of FP32, which is 3.5% higher than the MI350P's 36.04 TFLOPS.

Q: Does the MI350P support graphics APIs?

A: No. The MI350P lists N/A for DirectX, OpenGL, and Vulkan, and it has no display outputs. The RX 7800 XT supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: Why does the RX 7800 XT have a pixel rate when the MI350P does not?

A: The RX 7800 XT has 96 render output units and produces 233.3 GPixel/s. The MI350P has 0 ROPs and a pixel rate of 0 MPixel/s, indicating it has no rasterization pipeline.

Q: What is the memory configuration difference?

A: The MI350P has 144 GB of HBM3e on an 8192-bit bus with 8.19 TB/s bandwidth. The RX 7800 XT has 16 GB of GDDR6 on a 256-bit bus with 624.1 GB/s bandwidth.

Q: How does the RX 7800 XT compare to its nearest rivals in the database?

A: The RX 7800 XT's average score of 11627 is 0.5% below the GTX 1660's 11680, 0.9% above the Pro 5500M's 11528, 1.3% above the Tesla K20c's 11479, and 1.8% below the RX 6500 XT's 11842.

Q: What are the power connector requirements?

A: The MI350P uses a single 16-pin connector with a 1000 W suggested PSU. The RX 7800 XT uses two 8-pin connectors with a 600 W suggested PSU.

Specification Differences

The two cards differ in nearly every major specification category. The MI350P uses a 3 nm process node from TSMC, while the RX 7800 XT uses 5 nm. Transistor counts diverge sharply: the MI350P has 73,000 million transistors on a 1190 mm² die, while the RX 7800 XT has 28,100 million on a 346 mm² die. Transistor density is higher on the RX 7800 XT at 81.2M per mm² versus 61.3M per mm² for the MI350P.

Clock speeds differ as well. The MI350P has a 1000 MHz base clock and a 2200 MHz boost clock. The RX 7800 XT has a 1295 MHz base clock, a 2124 MHz game clock, and a 2430 MHz boost clock. Memory clocks are 2000 MHz (8 Gbps effective) for the MI350P and 2438 MHz (19.5 Gbps effective) for the RX 7800 XT.

The compute unit configurations are distinct. The MI350P has 8192 shading units, 512 TMUs, and 0 ROPs. The RX 7800 XT has 3840 shading units, 240 TMUs, and 96 ROPs. The RX 7800 XT includes 60 ray tracing cores; the MI350P lists none. Neither card lists tensor cores.

The bus interface differs: the MI350P uses PCIe 5.0 x16, while the RX 7800 XT uses PCIe 4.0 x16. Power consumption is more than double on the MI350P at 600 W TDP versus 263 W TDP. Physical dimensions are similar in length and height, but the RX 7800 XT is thicker at 50 mm versus 40 mm.

Architecture Differences

The MI350P is built on the CDNA 4.0 architecture and belongs to the Instinct (MIx) generation. Its chip is the MI350 128CU. The RX 7800 XT uses the RDNA 3.0 architecture with the Navi 32 chip, codenamed Wheat Nas, from the Navi III (RX 7000) generation. These are fundamentally different design philosophies: CDNA targets compute acceleration, while RDNA targets graphics rendering.

The MI350P's CDNA 4.0 design is reflected in its lack of display outputs and graphics API support. It has no ROPs and no pixel rate, which means it cannot perform traditional screen rasterization. The RX 7800 XT's RDNA 3.0 design includes the full graphics pipeline, with 96 ROPs, 60 ray tracing cores, and support for DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4.

Memory architecture reinforces the split. The MI350P uses HBM3e with an 8192-bit bus, a configuration suited for high-bandwidth data movement. The RX 7800 XT uses GDDR6 with a 256-bit bus, a conventional graphics memory setup. The MI350P's 144 GB capacity is 9x the RX 7800 XT's 16 GB, and its bandwidth is more than 13x higher.

The production status and release timing differ. The RX 7800 XT is marked as Active and was released on September 5, 2023, with its predecessor listed as Navi II and successor as Navi IV. The MI350P has no production status recorded and is dated May 6, 2026, with its predecessor listed as Radeon Instinct. The RX 7800 XT has a launch MSRP of 499 USD; the MI350P has none recorded. These architectural and lifecycle differences make direct comparison meaningful only for compute workloads, where the MI350P's memory subsystem and the RX 7800 XT's slightly higher FP32 throughput define the tradeoff.