AMD Instinct MI350P vs AMD Steam Deck OLED GPU Comparison

Head-to-Head Benchmarks

The recorded data for the AMD Instinct MI350P and the AMD Steam Deck OLED GPU shows two products built for entirely different purposes, and the benchmark measurements reflect that divide. The MI350P delivers 36.04 TFLOPS of FP32 compute, while the Steam Deck OLED GPU delivers 1.638 TFLOPS. That is a 22-fold difference in raw floating-point throughput, and it defines the entire comparison.

The texture rate gap is even starker. The MI350P produces 1,126.4 GTexel/s, whereas the Steam Deck OLED GPU produces 51.20 GTexel/s. The MI350P is roughly 22 times faster in texture fill. Because the MI350P has 512 texture mapping units versus 32 on the Steam Deck OLED GPU, each clock cycle moves far more texture data on the larger part.

Pixel throughput inverts the trend. The Steam Deck OLED GPU reports 25.60 GPixel/s, while the MI350P reports 0 MPixel/s. The MI350P has no ROPs (0), which disqualifies it from standard rasterization work. The Steam Deck OLED GPU has 16 ROPs and is designed to drive a display directly. This is not a close contest in either direction; each part wins decisively in its intended domain.

Memory bandwidth follows compute scaling. The MI350P reaches 8.19 TB/s over an 8192-bit HBM3e interface, versus 176.0 GB/s over a 128-bit LPDDR5 interface on the Steam Deck OLED GPU. The MI350P offers roughly 46.5 times the bandwidth. Memory capacity differs by a factor of nine: 144 GB versus 16 GB.

Clock speeds show a smaller relative gap. The MI350P boosts to 2200 MHz, the Steam Deck OLED GPU to 1600 MHz. Base clocks match at 1000 MHz. The MI350P's advantage comes from its wider architecture, not from clock speed alone.

FP16 performance reveals a structural difference. The MI350P delivers 36.04 TFLOPS at a 1:1 ratio with FP32, meaning no throughput penalty for reduced precision. The Steam Deck OLED GPU delivers 3.277 TFLOPS at a 2:1 ratio, doubling its FP16 rate relative to FP32. The MI350P still leads by roughly 11 times in FP16, but the Steam Deck OLED GPU's ratio suggests a consumer-oriented design that accelerates half-precision workloads for gaming graphics.

Where Each One Wins

The MI350P wins in every compute-heavy category that the database records. Its 8192 shading units, 512 TMUs, and 8192-bit memory bus position it for data-center scale workloads. The 144 GB HBM3e frame buffer supports massive models and datasets that would never fit in the Steam Deck OLED GPU's 16 GB LPDDR5 pool. The 8.19 TB/s bandwidth allows sustained streaming of large tensors without memory starvation. The 36.04 TFLOPS FP32 rate and identical FP16 rate indicate a part optimized for matrix math where precision flexibility matters.

The MI350P also wins on process technology. It uses a 3 nm node from TSMC with 73,000 million transistors on a 1190 mm² die. The transistor density measures 61.3M per mm². This is a flagship-class silicon investment.

The Steam Deck OLED GPU wins in every category tied to display output and rasterization. It has 16 ROPs and produces 25.60 GPixel/s, enabling actual frame rendering to a screen. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.3, and it provides a USB Type-C display output. The MI350P has no display outputs and lists N/A for DirectX, OpenGL, and Vulkan support. The Steam Deck OLED GPU is the only one of the two that can present images to a user.

The Steam Deck OLED GPU also wins on power efficiency in absolute terms. Its 15 W TDP is 40 times lower than the MI350P's 600 W TDP. The database does not include a performance-per-watt benchmark, but the recorded power figures alone show that the Steam Deck OLED GPU fits into a handheld console, while the MI350P requires a data-center power delivery system with a 1000 W suggested PSU and a 16-pin connector.

The Steam Deck OLED GPU uses a 6 nm TSMC process with 2,400 million transistors on a 131 mm² die. That is a much smaller and simpler chip, but it includes 8 ray tracing cores, something the MI350P does not list. For gaming workloads that use ray tracing, the Steam Deck OLED GPU has dedicated hardware while the MI350P has none recorded.

Architecture Differences

The MI350P is built on CDNA 4.0, AMD's compute-focused architecture. The Steam Deck OLED GPU is built on RDNA 2.0, AMD's graphics-focused architecture. These are separate design lineages with different priorities.

The MI350P uses the MI350 128CU chip. It has 8192 shading units, 512 TMUs, and 0 ROPs. The lack of ROPs confirms that this is not a rasterizer; it is a compute accelerator. The Steam Deck OLED GPU uses the Sephiroth chip with 512 shading units, 32 TMUs, 16 ROPs, and 8 ray tracing cores. The presence of ROPs and ray tracing cores confirms a graphics pipeline.

Memory architecture differs fundamentally. The MI350P uses HBM3e with a 8192-bit bus and 144 GB capacity, delivering 8.19 TB/s. The Steam Deck OLED GPU uses LPDDR5 with a 128-bit bus and 16 GB capacity, delivering 176.0 GB/s. HBM3e is stacked, high-bandwidth memory designed for parallel compute; LPDDR5 is a low-power, system memory standard suited to handheld devices.

The process nodes differ by three generations of shrink. The MI350P is on 3 nm, the Steam Deck OLED GPU on 6 nm, both from TSMC. Transistor counts reflect the scale difference: 73,000 million versus 2,400 million. Die size is 1190 mm² versus 131 mm². Transistor density is 61.3M per mm² versus 18.3M per mm², indicating that the MI350P packs more transistors per area as well as far more total transistors.

Clock behavior differs at the top end. The MI350P boosts to 2200 MHz; the Steam Deck OLED GPU boosts to 1600 MHz. Both start at 1000 MHz base. The memory clock on the MI350P is 2000 MHz with 8 Gbps effective; the Steam Deck OLED GPU runs memory at 1375 MHz with 11 Gbps effective. Despite the Steam Deck's higher effective data rate per pin, its narrow 128-bit bus limits total bandwidth.

APIs separate the two completely. The MI350P lists N/A for DirectX, OpenGL, and Vulkan. The Steam Deck OLED GPU lists DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.3. The MI350P has no display outputs; the Steam Deck OLED GPU has one USB Type-C output.

Power delivery and physical design differ as expected. The MI350P is a dual-slot card, 267 mm long, 111 mm tall, 40 mm wide, with a 600 W TDP and a single 16-pin power connector. The Steam Deck OLED GPU is part of a handheld console, 298 mm long, 117 mm tall, 49 mm wide, with a 15 W TDP and no separate power connector listed.

Release dates place the products far apart in time. The Steam Deck OLED GPU launched on November 8, 2023. The MI350P has a release date of May 6, 2026. The MI350P lists its predecessor as Radeon Instinct; the Steam Deck OLED GPU has no predecessor recorded.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The AMD Instinct MI350P delivers 36.04 TFLOPS of FP32, while the AMD Steam Deck OLED GPU delivers 1.638 TFLOPS. The MI350P is approximately 22 times faster in FP32 throughput.

Q: Can either GPU output to a display?

A: Only the Steam Deck OLED GPU can. It has one USB Type-C display output. The MI350P lists no display outputs and reports N/A for DirectX, OpenGL, and Vulkan APIs.

Q: What memory configuration does each GPU use?

A: The MI350P uses 144 GB of HBM3e on an 8192-bit bus with 8.19 TB/s bandwidth. The Steam Deck OLED GPU uses 16 GB of LPDDR5 on a 128-bit bus with 176.0 GB/s bandwidth.

Q: Which GPU supports ray tracing?

A: The Steam Deck OLED GPU includes 8 ray tracing cores. The MI350P lists no ray tracing cores in the database.

Q: What is the power draw of each GPU?

A: The MI350P has a 600 W TDP and a suggested PSU of 1000 W. The Steam Deck OLED GPU has a 15 W TDP.

Q: What process nodes are used?

A: The MI350P uses a 3 nm TSMC process with 73,000 million transistors on a 1190 mm² die. The Steam Deck OLED GPU uses a 6 nm TSMC process with 2,400 million transistors on a 131 mm² die.

Specification Differences

| Specification | AMD Instinct MI350P | AMD Steam Deck OLED GPU |

| --- | --- | --- |

| Architecture | CDNA 4.0 | RDNA 2.0 |

| Chip | MI350 128CU | Sephiroth |

| Process Node | 3 nm | 6 nm |

| Transistors | 73,000 million | 2,400 million |

| Die Size | 1190 mm² | 131 mm² |

| Transistor Density | 61.3M / mm² | 18.3M / mm² |

| Boost Clock | 2200 MHz | 1600 MHz |

| Memory Clock | 2000 MHz, 8 Gbps effective | 1375 MHz, 11 Gbps effective |

| Memory Size | 144 GB | 16 GB |

| Memory Type | HBM3e | LPDDR5 |

| Memory Bus Width | 8192 bit | 128 bit |

| Memory Bandwidth | 8.19 TB/s | 176.0 GB/s |

| Shading Units | 8192 | 512 |

| TMUs | 512 | 32 |

| ROPs | 0 | 16 |

| Ray Tracing Cores | None listed | 8 |

| Pixel Rate | 0 MPixel/s | 25.60 GPixel/s |

| Texture Rate | 1,126.4 GTexel/s | 51.20 GTexel/s |

| FP32 Performance | 36.04 TFLOPS | 1.638 TFLOPS |

| FP16 Performance | 36.04 TFLOPS (1:1) | 3.277 TFLOPS (2:1) |

| TDP | 600 W | 15 W |

| Slot Width | Dual-slot | Not listed |

| Power Connectors | 1x 16-pin | Not listed |

| Suggested PSU | 1000 W | Not listed |

| Bus Interface | PCIe 5.0 x16 | Not listed |

| Display Outputs | No outputs | 1x USB Type-C |

| DirectX Support | N/A | 12 Ultimate (12_2) |

| OpenGL Support | N/A | 4.6 |

| Vulkan Support | N/A | 1.3 |

| Length | 267 mm | 298 mm |

| Height | 111 mm | 117 mm |

| Width | 40 mm | 49 mm |

| Release Date | 2026-05-06 | 2023-11-08 |

| Production Status | Not listed | Active |