AMD Radeon PRO W7800 48 GB vs AMD Steam Machine GPU Comparison

Head-to-Head Benchmarks

The database contains no recorded head-to-head benchmark comparisons between the AMD Radeon PRO W7800 48 GB and the AMD Steam Machine GPU. Both entries show zero benchmark scores and zero wins in the head-to-head matrix. This absence of measured data means direct performance deltas cannot be established from the recorded information.

The raw specifications, however, indicate a substantial performance gap. The Radeon PRO W7800 delivers 45.25 TFLOPS of FP32 compute, while the Steam Machine GPU delivers 17.56 TFLOPS. This represents a 2.58x advantage for the workstation card in raw shader throughput. The pixel rate difference is similarly large: 323.2 GPixel/s versus 156.8 GPixel/s, a 2.06x margin. Texture fill rates show 707.0 GTexel/s against 274.4 GTexel/s, a 2.58x gap that mirrors the FP32 ratio.

Memory bandwidth favors the W7800 by a 3.0x margin: 864.0 GB/s versus 288.0 GB/s. The 48 GB frame buffer dwarfs the 8 GB capacity of the Steam Machine GPU, and the 384-bit bus width compares to a 128-bit interface. These figures suggest the W7800 would dominate in memory-intensive workloads, though no actual benchmark data confirms this.

Both GPUs share the RDNA 3.0 architecture, the same DirectX 12 Ultimate (12_2) support, OpenGL 4.6, and Vulkan 1.4. The Steam Machine GPU has a game clock of 2250 MHz, a feature absent from the W7800's specification sheet. Base clocks differ: 1895 MHz for the W7800 versus 1720 MHz for the Steam Machine GPU. Boost clocks are closer: 2525 MHz versus 2450 MHz.

The lack of benchmark entries means percentile rankings cannot be derived. Both entries sit at the 50th percentile against all GPUs, but this value appears to be a default placeholder rather than a computed statistic. The database shows zero average benchmark scores for both products.

Architecture Differences

The two GPUs diverge significantly at the silicon level. The Radeon PRO W7800 uses the Navi 31 chip with the Plum Bonito codename, fabricated on TSMC's 5 nm process. The Steam Machine GPU uses the Navi 33 chip with the Hotpink Bonefish codename, built on TSMC's 6 nm node. This process difference affects transistor density: the W7800 packs 109.1 million transistors per square millimeter, while the Steam Machine GPU achieves 65.2 million per square millimeter.

Total transistor counts tell a stark story. The W7800 integrates 57,700 million transistors on a 529 mm² die. The Steam Machine GPU contains 13,300 million transistors on a 204 mm² die. The W7800's die is 2.59x larger in area and holds 4.34x more transistors. These physical differences translate directly into compute resources.

The W7800 features 4480 shading units, 280 texture mapping units, 128 render output units, and 70 ray tracing cores. The Steam Machine GPU features 1792 shading units, 112 TMUs, 64 ROPs, and 28 RT cores. The W7800 holds a 2.5x advantage in shading units, a 2.5x margin in TMUs, a 2.0x lead in ROPs, and a 2.5x advantage in RT cores. Neither GPU includes tensor cores.

Memory subsystems differ fundamentally. The W7800 uses 48 GB of GDDR6 on a 384-bit bus, achieving 864.0 GB/s bandwidth. The Steam Machine GPU uses 8 GB of GDDR6 on a 128-bit bus, achieving 288.0 GB/s. Both run memory at 2250 MHz with 18 Gbps effective data rate. The memory clock is identical; the bandwidth difference stems entirely from bus width and capacity.

Power characteristics reflect the performance gap. The W7800 carries a 281 W TDP, requires dual 8-pin power connectors, and recommends a 600 W PSU. The Steam Machine GPU has a 110 W TDP and requires no external power connectors. The W7800 is a dual-slot card measuring 280 mm in length, 110 mm in height, and 40 mm in width. The Steam Machine GPU measures 156 mm by 152 mm by 162 mm, a more compact footprint suited to console integration.

The W7800 connects via PCIe 4.0 x16 and outputs 3x DisplayPort 2.1 plus 1x mini-DisplayPort 2.1. The Steam Machine GPU has no recorded bus interface and outputs 1x HDMI 2.1a plus 1x DisplayPort 2.1. Both support identical API feature sets.

Where Each One Wins

The Radeon PRO W7800 wins decisively in raw compute throughput. Its 45.25 TFLOPS FP32 performance, 45.25 TFLOPS FP16 (1:1 ratio), and 707.0 GTexel/s texture rate position it for heavy parallel workloads. The 48 GB memory capacity and 864.0 GB/s bandwidth suit large datasets, high-resolution rendering, and multi-display professional environments. The 70 RT cores provide substantial ray tracing throughput for visualization tasks.

The Steam Machine GPU wins in power efficiency and physical integration. At 110 W TDP, it consumes 39% of the W7800's 281 W power budget. The compact dimensions (156 mm by 152 mm by 162 mm) and lack of external power connectors make it suitable for small-form-factor systems. The 8 GB memory and 288.0 GB/s bandwidth, while smaller, remain adequate for console-class gaming at standard resolutions. The 28 RT cores enable ray-traced effects at lower performance envelopes.

The data shows a clear workload split. The W7800 targets compute-heavy professional tasks: large-scale 3D rendering, scientific visualization, and multi-display productivity. The Steam Machine GPU targets console-style gaming with fixed hardware specifications. The W7800's 128 ROPs versus 64 ROPs indicates stronger fill-rate-bound performance, while the Steam Machine GPU's 156.8 GPixel/s remains respectable for its class.

Neither GPU has benchmark data to validate real-world performance, so these conclusions derive from architectural analysis alone. The W7800's transistor density advantage (109.1M per mm² versus 65.2M per mm²) suggests more efficient use of silicon area, though the different process nodes complicate direct comparison.

FAQ

Q: Which GPU has more shading units?

A: The AMD Radeon PRO W7800 48 GB has 4480 shading units, which is 2.5x the 1792 shading units found in the AMD Steam Machine GPU.

Q: What is the memory bandwidth difference?

A: The W7800 delivers 864.0 GB/s over a 384-bit bus with 48 GB of GDDR6. The Steam Machine GPU delivers 288.0 GB/s over a 128-bit bus with 8 GB of GDDR6. The W7800's bandwidth is exactly 3.0x higher.

Q: Do both GPUs support the same DirectX version?

A: Yes, both support DirectX 12 Ultimate (12_2), along with OpenGL 4.6 and Vulkan 1.4. The API feature sets are identical.

Q: What process nodes do the two chips use?

A: The W7800's Navi 31 chip uses TSMC's 5 nm process. The Steam Machine GPU's Navi 33 chip uses TSMC's 6 nm process. Both are fabricated by TSMC.

Q: How do the power requirements compare?

A: The W7800 has a 281 W TDP and requires 2x 8-pin power connectors with a 600 W suggested PSU. The Steam Machine GPU has a 110 W TDP and requires no external power connectors.

Q: Which GPU has more ray tracing cores?

A: The W7800 has 70 ray tracing cores, which is 2.5x the 28 ray tracing cores in the Steam Machine GPU.

Specification Differences

The table below lists only the fields where the two GPUs differ.

| Field | AMD Radeon PRO W7800 48 GB | AMD Steam Machine GPU |

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

| Chip | Navi 31 | Navi 33 |

| Codename | Plum Bonito | Hotpink Bonefish |

| Generation | Radeon Pro Navi (Navi III Series) | Console GPU (Valve) |

| Process Node | 5 nm | 6 nm |

| Transistors | 57,700 million | 13,300 million |

| Die Size | 529 mm² | 204 mm² |

| Transistor Density | 109.1M / mm² | 65.2M / mm² |

| Base Clock | 1895 MHz | 1720 MHz |

| Boost Clock | 2525 MHz | 2450 MHz |

| Game Clock | None | 2250 MHz |

| Memory Size | 48 GB | 8 GB |

| Memory Bus Width | 384 bit | 128 bit |

| Memory Bandwidth | 864.0 GB/s | 288.0 GB/s |

| Shading Units | 4480 | 1792 |

| TMUs | 280 | 112 |

| ROPs | 128 | 64 |

| RT Cores | 70 | 28 |

| Pixel Rate | 323.2 GPixel/s | 156.8 GPixel/s |

| Texture Rate | 707.0 GTexel/s | 274.4 GTexel/s |

| FP32 | 45.25 TFLOPS | 17.56 TFLOPS |

| FP16 | 45.25 TFLOPS (1:1) | 17.56 TFLOPS (1:1) |

| TDP | 281 W | 110 W |

| Slot Width | Dual-slot | None |

| Power Connectors | 2x 8-pin | None |

| Suggested PSU | 600 W | None |

| Bus Interface | PCIe 4.0 x16 | None |

| Display Outputs | 3x DisplayPort 2.1, 1x mini-DisplayPort 2.1 | 1x HDMI 2.1a, 1x DisplayPort 2.1 |

| Dimensions | 280 mm x 110 mm x 40 mm | 156 mm x 152 mm x 162 mm |

| Release Date | 2024-11-14 | 2026-06-28 |

| Predecessor | Radeon Pro Vega | None |

| Launch MSRP | 2,499 USD | None |

Both GPUs share the RDNA 3.0 architecture, TSMC foundry, GDDR6 memory type, 2250 MHz memory clock with 18 Gbps effective rate, DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4 support.

The Verdict

The data indicates two products designed for different purposes within the same architectural family. The AMD Radeon PRO W7800 48 GB delivers 2.58x the FP32 compute, 3.0x the memory bandwidth, and 6.0x the memory capacity of the AMD Steam Machine GPU. Its 70 RT cores, 128 ROPs, and 280 TMUs provide substantial headroom for professional rendering and compute tasks. The 281 W TDP and dual-slot form factor confirm its workstation orientation.

The AMD Steam Machine GPU operates at 39% of the W7800's power draw while delivering 38.8% of its FP32 performance. The 110 W TDP and connector-free design enable compact console integration. Its 8 GB memory and 288.0 GB/s bandwidth suit the target gaming resolution and quality settings typical of console hardware.

The W7800's 5 nm process node versus the Steam Machine GPU's 6 nm node explains part of the density advantage: 109.1M transistors per mm² versus 65.2M per mm². The W7800's die is 2.59x larger, and its transistor count is 4.34x higher. These are fundamental architectural differences, not merely clock adjustments.

The release dates place the W7800 in 2024 and the Steam Machine GPU in 2026, though both remain in active production. The W7800 carries a launch MSRP of 2,499 USD. The Steam Machine GPU has no recorded launch MSRP.

For users requiring maximum compute throughput, large memory capacity, and professional display outputs, the W7800 is the clear choice from the recorded data. For power-constrained, compact, console-style gaming implementations, the Steam Machine GPU offers a lower-power alternative with the same API support. The absence of benchmark scores means these conclusions rest entirely on the architectural specifications, which show a consistent 2.0x to 3.0x advantage for the W7800 across every compute and memory metric.