AMD Steam Machine GPU vs NVIDIA GeForce RTX 4080 SUPER Comparison

Head-to-Head Benchmarks

The recorded data shows a single-sided comparison. The AMD Steam Machine GPU has no benchmark entries in the database, while the NVIDIA GeForce RTX 4080 SUPER carries a full suite of results. This makes direct numerical comparison impossible for most tests. The RTX 4080 SUPER posts an average benchmark score of 54209, with a percentile ranking of 86 among all GPUs. The Steam Machine GPU sits at the 50th percentile with an average score of 0, which reflects the absence of recorded measurements rather than a literal performance of zero.

The RTX 4080 SUPER delivers 52.22 TFLOPS of FP32 compute and 52.22 TFLOPS of FP16 compute. The Steam Machine GPU offers 17.56 TFLOPS in both FP32 and FP16. The NVIDIA card sustains a texture rate of 816.0 GTexel/s against 274.4 GTexel/s for the AMD part, and a pixel rate of 285.6 GPixel/s against 156.8 GPixel/s. These are the only head-to-head numerical deltas available, and they all favor the RTX 4080 SUPER by wide margins.

Memory bandwidth tells a similar story. The RTX 4080 SUPER reaches 736.3 GB/s over a 256 bit bus with 16 GB of GDDR6X. The Steam Machine GPU manages 288.0 GB/s over a 128 bit bus with 8 GB of GDDR6. The NVIDIA card has roughly 2.5 times the bandwidth and twice the memory capacity. The Steam Machine GPU uses 18 Gbps effective memory, while the RTX 4080 SUPER uses 23 Gbps effective memory.

The nearest rival data for the RTX 4080 SUPER places it just behind the standard RTX 4080, which scores 54247, a delta of -0.1%. The Radeon Pro W5700X scores 54828, putting the RTX 4080 SUPER 1.1% behind. The RX 6750 GRE 12 GB scores 55698, a 2.7% gap, and the Radeon 8060S scores 55757, a 2.8% gap. These deltas show the RTX 4080 SUPER sitting in a tight cluster near the top of its segment, but not at the absolute peak.

The Verdict

The data supports a clear split. The NVIDIA GeForce RTX 4080 SUPER is the only one of the two with recorded performance results, and those results place it in the 86th percentile of all GPUs. It is a high-end desktop card with 52.22 TFLOPS of FP32 compute, 16 GB of GDDR6X memory, and 736.3 GB/s of bandwidth. It targets demanding 4K and high-refresh workloads, and its 320 W TDP reflects that positioning. It is also end-of-life per the database, with a successor in the GeForce 50 series, and its launch MSRP was 999 USD.

The AMD Steam Machine GPU is a console-class part for Valve hardware. It draws 110 W, uses no power connectors, and carries 8 GB of GDDR6 with 288.0 GB/s of bandwidth. Its 17.56 TFLOPS of FP32 compute is roughly one third of the RTX 4080 SUPER figure. The production status is active, and the release date is later than the NVIDIA card. It is a low-power, small-form-factor solution, not a competitor to the RTX 4080 SUPER in raw throughput.

The verdict from the recorded data is straightforward: the RTX 4080 SUPER wins every measured category. The Steam Machine GPU wins only in efficiency-oriented traits like power draw, physical size, and the absence of external power connectors. Anyone selecting between these two is choosing between a high-end discrete card and a console GPU, and the benchmark results do not put them in the same class.

Architecture Differences

The AMD Steam Machine GPU uses the Navi 33 chip built on TSMC 6 nm process technology. It is based on RDNA 3.0 architecture with the codename Hotpink Bonefish. The chip contains 13,300 million transistors on a 204 mm² die, giving a transistor density of 65.2M per mm². The architecture includes 1792 shading units, 112 texture mapping units, 64 ROPs, and 28 ray tracing cores. It has no tensor cores listed.

The NVIDIA GeForce RTX 4080 SUPER uses the AD103 chip built on TSMC 5 nm process technology. It is based on Ada Lovelace architecture. The chip contains 45,900 million transistors on a 379 mm² die, giving a transistor density of 121.1M per mm². The architecture includes 10240 shading units, 320 texture mapping units, 112 ROPs, 80 ray tracing cores, and 320 tensor cores.

The transistor density difference is significant. The RTX 4080 SUPER packs nearly twice the transistors per square millimeter, 121.1M versus 65.2M, which reflects the tighter 5 nm node. The Steam Machine GPU has a smaller die at 204 mm², while the RTX 4080 SUPER spans 379 mm². Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so the feature set at the API level is identical.

The tensor core count is a major architectural difference. The Steam Machine GPU has none listed, while the RTX 4080 SUPER has 320. This affects any workload that relies on tensor operations, though the database does not include specific AI or DLSS benchmark results for either card. The ray tracing core counts also differ: 28 for AMD versus 80 for NVIDIA.

The memory architectures diverge as well. The Steam Machine GPU uses GDDR6, while the RTX 4080 SUPER uses GDDR6X. The bus widths are 128 bit and 256 bit respectively. The clock structures differ, with the AMD card listing base, boost, game, and memory clocks, while the NVIDIA card lists base, boost, and memory clocks with no game clock field.

Specification Differences

The process node differs: 6 nm for the AMD Steam Machine GPU, 5 nm for the NVIDIA GeForce RTX 4080 SUPER. The foundry is the same, TSMC, for both.

Transistor count: 13,300 million for AMD, 45,900 million for NVIDIA. Die size: 204 mm² for AMD, 379 mm² for NVIDIA. Transistor density: 65.2M per mm² for AMD, 121.1M per mm² for NVIDIA.

Base clock: 1720 MHz for AMD, 2295 MHz for NVIDIA. Boost clock: 2450 MHz for AMD, 2550 MHz for NVIDIA. The AMD card has a game clock of 2250 MHz; the NVIDIA card has no game clock listed. Memory clock: 2250 MHz with 18 Gbps effective for AMD, 1438 MHz with 23 Gbps effective for NVIDIA.

Memory size: 8 GB for AMD, 16 GB for NVIDIA. Memory type: GDDR6 for AMD, GDDR6X for NVIDIA. Bus width: 128 bit for AMD, 256 bit for NVIDIA. Bandwidth: 288.0 GB/s for AMD, 736.3 GB/s for NVIDIA.

Shading units: 1792 for AMD, 10240 for NVIDIA. TMUs: 112 for AMD, 320 for NVIDIA. ROPs: 64 for AMD, 112 for NVIDIA. Ray tracing cores: 28 for AMD, 80 for NVIDIA. Tensor cores: none listed for AMD, 320 for NVIDIA.

Pixel rate: 156.8 GPixel/s for AMD, 285.6 GPixel/s for NVIDIA. Texture rate: 274.4 GTexel/s for AMD, 816.0 GTexel/s for NVIDIA. FP32: 17.56 TFLOPS for AMD, 52.22 TFLOPS for NVIDIA. FP16: 17.56 TFLOPS for AMD, 52.22 TFLOPS for NVIDIA.

TDP: 110 W for AMD, 320 W for NVIDIA. Slot width: not listed for AMD, triple-slot for NVIDIA. Power connectors: none for AMD, 1x 16-pin for NVIDIA. Suggested PSU: not listed for AMD, 700 W for NVIDIA. Bus interface: not listed for AMD, PCIe 4.0 x16 for NVIDIA.

Display outputs: 1x HDMI 2.1a and 1x DisplayPort 2.1 for AMD, 1x HDMI 2.1 and 3x DisplayPort 1.4a for NVIDIA. Dimensions: 156 mm length, 152 mm height, 162 mm width for AMD; 310 mm length, 140 mm height, 61 mm width for NVIDIA.

Production status: active for AMD, end-of-life for NVIDIA. Release date: 2026-06-28 for AMD, 2024-01-30 for NVIDIA. Predecessor: none listed for AMD, GeForce 30 for NVIDIA. Successor: none listed for AMD, GeForce 50 for NVIDIA. Launch MSRP: none for AMD, 999 USD for NVIDIA.

FAQ

Q: Which GPU has more FP32 compute power?

A: The NVIDIA GeForce RTX 4080 SUPER delivers 52.22 TFLOPS of FP32, while the AMD Steam Machine GPU delivers 17.56 TFLOPS. The NVIDIA card is about three times higher.

Q: How much memory does each card have?

A: The AMD Steam Machine GPU has 8 GB of GDDR6 on a 128 bit bus. The NVIDIA GeForce RTX 4080 SUPER has 16 GB of GDDR6X on a 256 bit bus.

Q: What is the memory bandwidth difference?

A: The AMD card reaches 288.0 GB/s. The NVIDIA card reaches 736.3 GB/s, which is substantially higher.

Q: Which card uses less power?

A: The AMD Steam Machine GPU has a TDP of 110 W and uses no power connectors. The NVIDIA GeForce RTX 4080 SUPER has a TDP of 320 W and requires a 1x 16-pin connector with a suggested PSU of 700 W.

Q: Are there any benchmark scores for the AMD Steam Machine GPU?

A: No. The database lists no benchmark entries for the AMD Steam Machine GPU, and its average benchmark score is 0. The NVIDIA GeForce RTX 4080 SUPER has a full set of recorded scores with an average of 54209.

Q: What is the production status of each card?

A: The AMD Steam Machine GPU is listed as active. The NVIDIA GeForce RTX 4080 SUPER is listed as end-of-life, with the GeForce 50 series as its successor.

Where Each One Wins

The NVIDIA GeForce RTX 4080 SUPER wins every category with recorded performance data. It has higher compute throughput, 52.22 TFLOPS FP32 versus 17.56 TFLOPS, higher memory bandwidth, 736.3 GB/s versus 288.0 GB/s, more memory, 16 GB versus 8 GB, more shading units, 10240 versus 1792, more ray tracing cores, 80 versus 28, and more tensor cores, 320 versus none. Its pixel rate and texture rate are also far ahead. The benchmark data confirms this with an average score of 54209 and an 86th percentile ranking.

The AMD Steam Machine GPU wins on power efficiency and physical footprint. Its 110 W TDP is less than a third of the NVIDIA card's 320 W. It requires no power connectors, while the RTX 4080 SUPER needs a 16-pin connector and a 700 W suggested PSU. The AMD card is much shorter at 156 mm versus 310 mm, and it uses a 6 nm process rather than 5 nm, which is a node disadvantage but a cost and availability consideration at the console level. It also has a DisplayPort 2.1 output, while the NVIDIA card uses DisplayPort 1.4a.

The use-case split is clear. The RTX 4080 SUPER suits high-end desktop builds where maximum throughput and large memory pools matter and where the power draw and triple-slot size are acceptable. The Steam Machine GPU suits compact, low-power console hardware where the absence of external power connectors and the small dimensions are critical constraints. The data shows no overlap in their intended roles.