AMD Radeon RX 7900 XTX vs NVIDIA GeForce RTX 4050 Mobile Comparison

AMD Radeon RX 7900 XTX vs NVIDIA GeForce RTX 4050 Mobile is a comparison between two radically different GPU classes: a 355 W desktop flagship and a 50 W laptop part. The benchmark data confirms this divide, with the RX 7900 XTX winning 8 of 9 head-to-head tests, yet the RTX 4050 Mobile takes a decisive victory in one compute workload, revealing a nuanced performance profile beyond raw rasterization.

Where Each One Wins

The AMD Radeon RX 7900 XTX dominates the traditional graphics workload categories. In the head-to-head benchmark set, it wins every PassMark DirectX test, including DirectX 9 (330 vs 184, +79.3%), DirectX 10 (166 vs 79, +110.1%), DirectX 11 (356 vs 130, +173.8%), and DirectX 12 (131 vs 61, +114.8%). The 3DMark Steel Nomad DX12 result, though only listed for the RX 7900 XTX at 6841, reinforces its standing in modern API gaming. The AMD card also sweeps the 2D and 3D PassMark tests, with a G3D score of 31238 versus the mobile NVIDIA’s 14423, a 116.6% advantage. Its PassMark G2D score of 1267 doubles the RTX 4050 Mobile’s 633.

Where the NVIDIA GeForce RTX 4050 Mobile wins is narrower but significant: Geekbench OpenCL. In that test, the laptop GPU scores 74748 against the RX 7900 XTX’s 50465, a 32.5% margin. This single win suggests that in raw compute throughput, the Ada Lovelace architecture’s efficiency can outpace the desktop giant’s raw power, likely due to the RTX 4050 Mobile’s dedicated tensor cores and 1:1 FP16 ratio. The RTX 4050 Mobile also holds a near-identical overall average benchmark score (19049) to the RX 7900 XTX (19410), despite losing nearly every individual test, indicating that its OpenCL score heavily weights its aggregate.

Architecture Differences

The architectural gap between these two GPUs is generational and physical. The RX 7900 XTX uses the Navi 31 chip on TSMC’s 5 nm process, with a massive 529 mm² die containing 57,700 million transistors. The RTX 4050 Mobile uses the AD107 chip, also on 5 nm but with a much smaller 159 mm² die and just 18,900 million transistors. This gives the AMD part a transistor density of 109.1M per mm², while the NVIDIA chip achieves a higher 118.9M per mm², showing Ada Lovelace’s denser packing. The AMD architecture is RDNA 3.0 with a codename “Plum Bonito,” while NVIDIA uses Ada Lovelace with no listed codename.

The RX 7900 XTX has 6144 shading units, 384 TMUs, and 192 ROPs, alongside 96 ray tracing cores. The RTX 4050 Mobile has 2560 shading units, 80 TMUs, and 48 ROPs, with 20 RT cores and 80 tensor cores. The AMD card lacks tensor cores entirely, while NVIDIA’s tensor cores are central to its compute lead. The memory subsystems differ too: the RX 7900 XTX uses a 384-bit bus with 24 GB GDDR6 and 960 GB/s bandwidth, whereas the RTX 4050 Mobile has a 96-bit bus with 6 GB GDDR6 and 192 GB/s bandwidth. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, but the RX 7900 XTX offers 1x HDMI 2.1a, 2x DisplayPort 2.1, and 1x USB Type-C, while the RTX 4050 Mobile’s outputs are “Portable Device Dependent.”

Head-to-Head Benchmarks

The largest single margin in the dataset belongs to the RX 7900 XTX in PassMark GPU Compute, where it scores 17689 against the RTX 4050 Mobile’s 5947, a 197.4% advantage. This suggests that outside of the specific Geekbench OpenCL workload, the AMD card’s FP32 throughput of 61.39 TFLOPS overwhelms the mobile part’s 8.986 TFLOPS. In PassMark DirectX 11, the RX 7900 XTX leads by 173.8% (356 vs 130), and in PassMark G3D it is ahead by 116.6% (31238 vs 14423). The AMD card also wins PassMark DirectX 12 by 114.8% (131 vs 61) and DirectX 10 by 110.1% (166 vs 79), showing a consistent pattern of roughly 2x to 3x performance in legacy and current APIs.

The Geekbench Vulkan test is the closest race, with the RX 7900 XTX winning 85612 to 75235, a 13.8% margin. This is the smallest AMD victory and shows that the RTX 4050 Mobile is competitive in Vulkan’s compute-heavy workloads. The only NVIDIA win is Geekbench OpenCL, where the RTX 4050 Mobile’s 74748 beats the RX 7900 XTX’s 50465 by 32.5%. This reversal is striking given the AMD card’s overall compute dominance; it indicates that the RTX 4050 Mobile’s tensor cores provide a specialized advantage in OpenCL’s parallel execution model, even while the RX 7900 XTX wins the PassMark GPU Compute test by nearly 3x.

Specification Differences

The two GPUs differ in nearly every measurable specification. The RX 7900 XTX has a base clock of 1929 MHz and boost of 2498 MHz, with a game clock of 2365 MHz; the RTX 4050 Mobile has a lower base of 1455 MHz and boost of 1755 MHz. Memory clocks show the AMD part at 2500 MHz (20 Gbps effective) versus NVIDIA’s 2000 MHz (16 Gbps effective). The bus interface differs: the RX 7900 XTX uses PCIe 4.0 x16, while the RTX 4050 Mobile uses PCIe 4.0 x8. Power requirements are starkly different: the RX 7900 XTX draws 355 W TDP with 2x 8-pin connectors and a suggested 750 W PSU, while the RTX 4050 Mobile has a 50 W TDP, no power connectors, and no suggested PSU. The AMD card is dual-slot and measures 287 mm x 110 mm x 51 mm; the RTX 4050 Mobile is IGP (integrated) with no listed dimensions. Production status also differs: the RX 7900 XTX is end-of-life, released on 2022-11-02, while the RTX 4050 Mobile is active, released on 2023-01-02. The RX 7900 XTX has a launch MSRP of 999 USD; the RTX 4050 Mobile has none listed.

FAQ

Q: Which GPU wins more benchmarks overall?

A: The AMD Radeon RX 7900 XTX wins 8 out of 9 head-to-head benchmarks, with the only NVIDIA victory being Geekbench OpenCL.

Q: How much faster is the RX 7900 XTX in PassMark G3D?

A: The RX 7900 XTX scores 31238 versus the RTX 4050 Mobile’s 14423, a 116.6% advantage.

Q: What is the single largest performance gap in the data?

A: The largest gap is in PassMark GPU Compute, where the RX 7900 XTX leads by 197.4%, scoring 17689 against 5947.

Q: Does the RTX 4050 Mobile ever beat the RX 7900 XTX?

A: Yes, in Geekbench OpenCL, the RTX 4050 Mobile scores 74748 versus 50465, a 32.5% margin in NVIDIA’s favor.

Q: What are the average benchmark scores for each GPU?

A: The RX 7900 XTX has an average benchmark score of 19410, while the RTX 4050 Mobile averages 19049, a difference of 361 points.

Q: How do their memory bandwidths compare?

A: The RX 7900 XTX has 960.0 GB/s bandwidth on a 384-bit bus, while the RTX 4050 Mobile has 192.0 GB/s on a 96-bit bus.

The Verdict

The data clearly shows that the AMD Radeon RX 7900 XTX is the superior GPU for gaming and traditional graphics workloads. Its wins in every DirectX test, plus the 116.6% G3D lead and the 197.4% compute lead, establish it as the definitive choice for high-end desktop gaming, 3D rendering, and any application that relies on rasterization or FP32 compute. The RX 7900 XTX also has a 13.8% edge in Vulkan, making it the better option for modern cross-platform titles.

The NVIDIA GeForce RTX 4050 Mobile is not without merit, but its role is different. Its single OpenCL win by 32.5% suggests that in compute-specific tasks using that API, the Ada Lovelace architecture’s tensor cores provide a unique efficiency advantage. However, this comes at the cost of 6 GB memory versus 24 GB, 192 GB/s versus 960 GB/s bandwidth, and a 355 W versus 50 W TDP. The RTX 4050 Mobile’s average score of 19049 is within 1.9% of the RX 7900 XTX’s 19410, a remarkably close aggregate given the individual test disparities, but this is skewed by the OpenCL outlier.

For a desktop user requiring maximum performance, the RX 7900 XTX is the clear winner across all measured categories except one. For a laptop user needing an efficient, integrated GPU with strong OpenCL compute, the RTX 4050 Mobile offers a specific advantage, but it cannot match the RX 7900 XTX in any rasterization benchmark. The production statuses reinforce this: the RX 7900 XTX is end-of-life with a successor in Navi IV, while the RTX 4050 Mobile is active with a GeForce 50 Mobile successor. The verdict is that the RX 7900 XTX wins decisively on raw performance, while the RTX 4050 Mobile wins on efficiency and one compute workload.