AMD Steam Machine GPU vs NVIDIA GeForce RTX 4080 Max-Q Comparison

The Verdict

The recorded data presents two mobile-oriented graphics processors with fundamentally different design philosophies. The AMD Steam Machine GPU, built for Valves console platform, and the NVIDIA GeForce RTX 4080 Max-Q, a low-power laptop part, both sit at the 50th percentile in the database. Neither has recorded benchmark scores or nearest rivals, so the analysis relies on architectural specifications and compute figures.

The RTX 4080 Max-Q holds the raw compute advantage. Its FP32 output reaches 20.04 TFLOPS, which is 14.1% higher than the AMD parts 17.56 TFLOPS. The NVIDIA chip also fields 7424 shading units, 232 texture mapping units, and 80 raster output units, all significantly higher than the AMD parts 1792, 112, and 64 respectively. For workloads that scale with shader count and texture throughput, the RTX 4080 Max-Q is the stronger candidate.

The AMD Steam Machine GPU counters with a higher boost clock of 2450 MHz versus 1350 MHz, and a higher base clock of 1720 MHz versus 795 MHz. It also delivers a substantially higher pixel rate of 156.8 GPixel/s compared to 108.0 GPixel/s. This suggests the AMD part excels in fill-rate-bound scenarios, despite having fewer total cores.

The RTX 4080 Max-Q also carries dedicated tensor cores, 232 of them, which the AMD part lacks entirely. This makes the NVIDIA solution the only one of the two with hardware acceleration for AI workloads. The AMD part does include 28 ray tracing cores, while the NVIDIA part has 58, so both support hardware-accelerated ray tracing, but the NVIDIA implementation has more than double the RT core count.

For consumers, the data points to a clear split. The RTX 4080 Max-Q is the compute-heavy option, suited to tasks that leverage high shader counts, tensor core acceleration, and greater memory capacity. The AMD Steam Machine GPU is the fill-rate-focused console part, with higher clocks and a much lower power draw of 110 W versus 60 W, which is a curious inversion since the AMD part consumes nearly double the power of the NVIDIA part while delivering less raw FP32 throughput.

Architecture Differences

The two processors come from different architectural generations and foundry nodes. The AMD Steam Machine GPU uses the Navi 33 chip built on RDNA 3.0 architecture, codenamed Hotpink Bonefish. It is manufactured on a 6 nm process at TSMC. The RTX 4080 Max-Q uses the AD104 chip on Ada Lovelace architecture, manufactured on a 5 nm process, also at TSMC. The smaller process node gives the NVIDIA chip a higher transistor density of 121.8 million transistors per square millimeter, compared to 65.2 million for the AMD part.

Transistor counts differ dramatically. The RTX 4080 Max-Q integrates 35,800 million transistors on a 294 mm² die. The AMD Steam Machine GPU integrates 13,300 million transistors on a 204 mm² die. Despite having fewer transistors, the AMD die is smaller, which reflects the density advantage of the 5 nm process used by NVIDIA.

Both chips support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RTX 4080 Max-Q uses a PCIe 4.0 x16 bus interface, while the AMD part has no listed bus interface in the database. The NVIDIA part is classified as an integrated graphics processor with an IGP slot width, while the AMD card has physical dimensions of 156 mm by 152 mm by 162 mm and uses no power connectors.

Memory architecture also separates the two. The RTX 4080 Max-Q carries 12 GB of GDDR6 memory on a 192-bit bus, yielding 432.0 GB/s of bandwidth. The AMD Steam Machine GPU carries 8 GB of GDDR6 memory on a 128-bit bus, yielding 288.0 GB/s of bandwidth. The NVIDIA part offers 50% more memory capacity and exactly 50% more memory bandwidth.

The AMD part has a game clock of 2250 MHz, a figure not present for the NVIDIA part. Both run memory at 2250 MHz with 18 Gbps effective transfer rates.

FAQ

Q: Which GPU has higher raw FP32 compute performance?

A: The RTX 4080 Max-Q delivers 20.04 TFLOPS, which is 14.1% higher than the AMD Steam Machine GPUs 17.56 TFLOPS.

Q: How do the memory configurations compare?

A: The RTX 4080 Max-Q uses 12 GB of GDDR6 memory on a 192-bit bus with 432.0 GB/s bandwidth. The AMD Steam Machine GPU uses 8 GB of GDDR6 memory on a 128-bit bus with 288.0 GB/s bandwidth.

Q: Does either GPU include dedicated AI acceleration hardware?

A: Only the RTX 4080 Max-Q includes tensor cores, with 232 of them. The AMD Steam Machine GPU has no tensor core count listed in the database.

Q: Which GPU has the higher clock speeds?

A: The AMD Steam Machine GPU has a base clock of 1720 MHz and a boost clock of 2450 MHz. The RTX 4080 Max-Q has a base clock of 795 MHz and a boost clock of 1350 MHz.

Q: What are the power consumption figures?

A: The AMD Steam Machine GPU is rated at 110 W TDP. The RTX 4080 Max-Q is rated at 60 W TDP.

Q: Which GPU has more ray tracing cores?

A: The RTX 4080 Max-Q has 58 ray tracing cores. The AMD Steam Machine GPU has 28 ray tracing cores.

Specification Differences

The two GPUs differ across nearly every major specification category in the database.

Clock speeds: AMD runs at 1720 MHz base and 2450 MHz boost, with a 2250 MHz game clock. NVIDIA runs at 795 MHz base and 1350 MHz boost, with no game clock listed.

Memory: AMD has 8 GB GDDR6 on a 128-bit bus with 288.0 GB/s bandwidth. NVIDIA has 12 GB GDDR6 on a 192-bit bus with 432.0 GB/s bandwidth.

Compute units: AMD has 1792 shading units, 112 TMUs, 64 ROPs, and 28 ray tracing cores. NVIDIA has 7424 shading units, 232 TMUs, 80 ROPs, 58 ray tracing cores, and 232 tensor cores.

Rates: AMD achieves 156.8 GPixel/s pixel rate and 274.4 GTexel/s texture rate. NVIDIA achieves 108.0 GPixel/s pixel rate and 313.2 GTexel/s texture rate.

Compute throughput: AMD achieves 17.56 TFLOPS FP32 and 17.56 TFLOPS FP16 with a 1:1 ratio. NVIDIA achieves 20.04 TFLOPS FP32 and 20.04 TFLOPS FP16 with a 1:1 ratio.

Physical attributes: AMD is built on 6 nm TSMC with 13,300 million transistors on a 204 mm² die. NVIDIA is built on 5 nm TSMC with 35,800 million transistors on a 294 mm² die. Transistor density is 65.2M per mm² for AMD and 121.8M per mm² for NVIDIA.

Power: AMD draws 110 W. NVIDIA draws 60 W.

Process node and architecture: AMD uses RDNA 3.0 with the Hotpink Bonefish codename. NVIDIA uses Ada Lovelace with no codename listed.

Bus interface: NVIDIA uses PCIe 4.0 x16. AMD has no bus interface listed.

Slot width: NVIDIA is classified as IGP. AMD has no slot width listed.

Display outputs: AMD provides 1x HDMI 2.1a and 1x DisplayPort 2.1. NVIDIA outputs are listed as Portable Device Dependent.

Release timing: AMD released on 2026-06-28. NVIDIA released on 2023-01-02.

Head-to-Head Benchmarks

The database contains no recorded head-to-head benchmark results for these two GPUs. Both entries show zero wins in the head-to-head comparison fields, zero average benchmark scores, and an empty benchmarks array. The nearest rivals fields are also empty for both parts.

Without direct benchmark measurements, the comparison must rely on the recorded specification data and derived performance indicators.

The strongest advantage for the RTX 4080 Max-Q appears in shading throughput. Its 7424 shading units represent a 4.14x count over the AMD parts 1792. Texture mapping units follow a similar pattern, with 232 versus 112, a 2.07x advantage. This translates to a texture rate of 313.2 GTexel/s versus 274.4 GTexel/s, an advantage of 14.1% for NVIDIA despite the AMD part having a much higher boost clock.

The AMD Steam Machine GPU wins decisively in pixel throughput. Its 156.8 GPixel/s exceeds the RTX 4080 Max-Q's 108.0 GPixel/s by 45.2%. This is a notable gap, driven by the AMD parts higher clock speeds and its ROP configuration relative to its core count.

Compute throughput favors NVIDIA. The RTX 4080 Max-Q produces 20.04 TFLOPS FP32, which is 14.1% higher than the AMD parts 17.56 TFLOPS. The FP16 figures mirror the FP32 values exactly for both parts, since both architectures implement 1:1 FP16 to FP32 ratios.

Memory bandwidth strongly favors NVIDIA. The 432.0 GB/s of the RTX 4080 Max-Q is exactly 50% higher than the 288.0 GB/s of the AMD Steam Machine GPU. Memory capacity also favors NVIDIA, with 12 GB versus 8 GB.

Ray tracing hardware favors NVIDIA with 58 RT cores versus 28, a 2.07x advantage. Tensor cores exist only on the NVIDIA part, with 232 available.

Power efficiency favors NVIDIA in terms of compute per watt. The RTX 4080 Max-Q delivers 20.04 TFLOPS at 60 W, which is 0.334 TFLOPS per watt. The AMD part delivers 17.56 TFLOPS at 110 W, which is 0.160 TFLOPS per watt. The NVIDIA part is more than twice as efficient on this metric.

Where Each One Wins

The RTX 4080 Max-Q wins in shader-heavy workloads. Its 7424 shading units, 232 TMUs, and 20.04 TFLOPS FP32 output make it the stronger candidate for general compute, simulation, and tasks that scale with parallel shader execution. The presence of 232 tensor cores gives it an exclusive capability for AI-accelerated workloads, something the AMD part cannot match.

The RTX 4080 Max-Q also wins in memory-intensive scenarios. Its 12 GB capacity and 432.0 GB/s bandwidth provide more headroom for large textures, high-resolution assets, and workloads that demand frequent memory access. The 192-bit bus doubles as a structural advantage over the 128-bit bus of the AMD part.

The AMD Steam Machine GPU wins in fill-rate-bound scenarios. Its 156.8 GPixel/s pixel rate, driven by the 2450 MHz boost clock, exceeds the RTX 4080 Max-Q by 45.2%. This makes it the stronger candidate for rasterization-heavy rendering where pixel output is the bottleneck.

The AMD part also wins on clock speed. Its 1720 MHz base and 2450 MHz boost clocks are significantly higher than the NVIDIA parts 795 MHz base and 1350 MHz boost. This could translate to lower latency in clock-sensitive workloads, though the database does not include latency measurements.

The power comparison is unusual. The AMD Steam Machine GPU draws 110 W, nearly double the 60 W of the RTX 4080 Max-Q. This means the NVIDIA part achieves higher compute throughput at lower power consumption. The AMD part does have a higher pixel rate, but it consumes more energy to do so.

Ray tracing is a mixed outcome. The RTX 4080 Max-Q has 58 RT cores versus 28 on the AMD part, suggesting better ray tracing throughput. However, the AMD part supports the same DirectX 12 Ultimate feature set, so both can run ray-traced content, just with different hardware resources.

The AMD Steam Machine GPU was released later, on 2026-06-28, compared to the RTX 4080 Max-Q's 2023-01-02. The RTX 4080 Max-Q has a documented predecessor in the GeForce 30 Mobile series and a successor in the GeForce 50 Mobile series, while the AMD part has no listed predecessor or successor. The AMD part remains in active production status, as does the NVIDIA part.