AMD Radeon RX 7900 XTX vs NVIDIA T400 4 GB Comparison

Head-to-Head Benchmarks

The recorded data includes two shared benchmark results for these cards, and in both cases the AMD Radeon RX 7900 XTX dominates the NVIDIA T400 4 GB. The largest gap appears in Geekbench Vulkan, where the RX 7900 XTX scores 85,612 against the T400’s 16,263, a delta of 426.4%. That is not a marginal victory; it is a performance tier separation of more than five times. In Geekbench OpenCL, the RX 7900 XTX posts 50,465 versus 17,320 for the T400, a 191.4% advantage. Both deltas are computed from the head-to-head table, and both favor the same card, so there is no single workload in this dataset where the NVIDIA T400 comes out ahead.

Looking at the absolute scores, the OpenCL result for the RX 7900 XTX is roughly three times the T400’s figure, while the Vulkan result is more than five times. The delta percentages reflect that asymmetry: 191.4% in OpenCL and 426.4% in Vulkan. For context, the RX 7900 XTX’s average benchmark score across all recorded tests is 19,410, which places it at the 64th percentile of all GPUs in the database. The T400’s average is 16,792, at the 60th percentile. Despite the massive head-to-head deltas, the overall percentile positions are closer than the per-test scores might suggest, because the RX 7900 XTX’s average is pulled down by several low Passmark scores in its full benchmark set. The T400, with only two recorded benchmarks, has a narrower profile.

The nearest rivals for each card further illustrate their positioning. The RX 7900 XTX’s nearest competitors by average score are the NVIDIA Quadro K5200 at 19,602 (1% lower), the AMD FirePro D300 at 19,637 (1.2% lower), the NVIDIA GeForce GTX 1060 3 GB at 19,334 (0.4% higher), and the NVIDIA TITAN Xp at 19,177 (1.2% higher). The T400’s nearest rivals are the AMD Radeon RX 7600S at 16,696 (0.6% lower), the NVIDIA Tesla M4 at 16,932 (0.8% higher), the AMD Radeon HD 7970M at 17,019 (1.3% higher), and the NVIDIA GeForce GTX 690 at 17,037 (1.4% higher). These rival sets show that the RX 7900 XTX sits in a much higher average-score bracket, while the T400 occupies a lower tier, even though their percentile rankings are only four points apart.

The Verdict

The data points to a clear split: the AMD Radeon RX 7900 XTX is the choice for anyone whose workload is represented by Geekbench OpenCL or Vulkan, where it leads by 191.4% and 426.4% respectively. The NVIDIA T400 4 GB, by contrast, offers no winning benchmark in the head-to-head set. If the decision rests solely on these two recorded tests, the RX 7900 XTX is the only defensible pick.

However, the percentile standings complicate a simple "one is better" summary. The RX 7900 XTX sits at the 64th percentile, the T400 at the 60th. That four-point gap is modest compared to the enormous per-test deltas. The reason is that the RX 7900 XTX’s average score of 19,410 includes multiple Passmark results (DirectX 9, 10, 11, 12, G2D, G3D, and compute) that are far below its Geekbench numbers. The T400’s average is based only on its two Geekbench results. So the RX 7900 XTX is a high-variance card in the database: exceptional in some tests, weaker in others. The T400 is more consistent within its limited test set, but that consistency never produces a score near the RX 7900 XTX’s best.

For a user whose application is sensitive to OpenCL or Vulkan performance, the RX 7900 XTX is the obvious choice. For a user whose workload is not covered by these two tests, the database does not provide a direct comparison, so any recommendation would be speculative. The safest statement from the recorded data is this: in every shared benchmark, the RX 7900 XTX wins, and by a wide margin. The T400’s only advantage in the dataset is its lower power footprint (30 W TDP versus 355 W), its single-slot form factor, and its lack of external power connectors, but those are specification differences, not performance wins.

FAQ

Q: Which card has the higher Geekbench OpenCL score?

A: The AMD Radeon RX 7900 XTX scores 50,465, while the NVIDIA T400 scores 17,320, a 191.4% advantage for the AMD card.

Q: How large is the Vulkan performance gap?

A: The RX 7900 XTX scores 85,612 in Geekbench Vulkan, compared to 16,263 for the T400, which is a 426.4% difference.

Q: Do the two cards have any shared benchmark where the T400 wins?

A: No. In the two recorded head-to-head tests, Geekbench OpenCL and Geekbench Vulkan, the RX 7900 XTX wins both.

Q: What is the average benchmark score for each card?

A: The RX 7900 XTX has an average of 19,410 across all its recorded benchmarks, and the T400 has an average of 16,792.

Q: How do their percentile rankings compare?

A: The RX 7900 XTX is at the 64th percentile of all GPUs, while the T400 is at the 60th percentile, a gap of four points.

Q: Which card has a higher power consumption?

A: The RX 7900 XTX has a TDP of 355 W, while the T400 has a TDP of 30 W, so the T400 uses considerably less power.

Specification Differences

The two cards differ in nearly every specification field. The RX 7900 XTX uses a 5 nm process node, while the T400 uses 12 nm, both fabricated by TSMC. Transistor counts diverge sharply: 57,700 million for the RX 7900 XTX versus 4,700 million for the T400. Die size is 529 mm² for the AMD card and 200 mm² for the NVIDIA card, giving transistor densities of 109.1M per mm² and 23.5M per mm² respectively.

Memory configurations are also far apart. The RX 7900 XTX has 24 GB of GDDR6 on a 384-bit bus, delivering 960.0 GB/s of bandwidth. The T400 has 4 GB of GDDR6 on a 64-bit bus, delivering 80.00 GB/s. Clock speeds differ as well: the RX 7900 XTX has a base clock of 1929 MHz, a boost clock of 2498 MHz, and a game clock of 2365 MHz, while the T400 has a base clock of 420 MHz and a boost clock of 1425 MHz. Memory clocks are 2500 MHz (20 Gbps effective) for the AMD card and 1250 MHz (10 Gbps effective) for the NVIDIA card.

The compute units scale accordingly. The RX 7900 XTX has 6144 shading units, 384 TMUs, 192 ROPs, and 96 ray tracing cores, while the T400 has 384 shading units, 24 TMUs, and 16 ROPs, with no ray tracing cores listed. Pixel rate is 479.6 GPixel/s for the AMD card versus 22.80 GPixel/s for the NVIDIA card. Texture rate is 959.2 GTexel/s versus 34.20 GTexel/s. FP32 throughput is 61.39 TFLOPS versus 1,094.4 GFLOPS, and FP16 is 122.8 TFLOPS (2:1) versus 2.189 TFLOPS (2:1).

Power and physical specifications also differ. The RX 7900 XTX has a 355 W TDP, a dual-slot design, two 8-pin power connectors, and a suggested PSU of 750 W. The T400 has a 30 W TDP, a single-slot design, no power connectors, and a suggested PSU of 200 W. The bus interface is PCIe 4.0 x16 for the AMD card and PCIe 3.0 x16 for the NVIDIA card. Display outputs are 1x HDMI 2.1a, 2x DisplayPort 2.1, and 1x USB Type-C for the RX 7900 XTX, while the T400 has 3x mini-DisplayPort 1.4a. Dimensions are recorded only for the AMD card: 287 mm length, 110 mm height, and 51 mm width. The T400’s dimensions are not listed in the database.

Architecture Differences

The architectural gap is substantial. The RX 7900 XTX is built on RDNA 3.0, with the codename Plum Bonito, and belongs to the Navi III (RX 7000) generation. Its chip is Navi 31. The T400 is built on Turing, with the chip TU117, and belongs to the Quadro Turing (Tx000) generation. The process node difference (5 nm versus 12 nm) is a major factor in the transistor density disparity: 109.1M per mm² versus 23.5M per mm².

The RX 7900 XTX includes 96 ray tracing cores, while the T400 lists no ray tracing cores at all, meaning hardware-accelerated ray tracing is absent on the NVIDIA card. Neither card lists tensor cores in the database. The DirectX support differs: the RX 7900 XTX supports DirectX 12 Ultimate (12_2), while the T400 supports DirectX 12 (12_1). Both support OpenGL 4.6 and Vulkan 1.4.

The memory architecture is also a structural difference. The RX 7900 XTX uses a 384-bit bus with 24 GB of GDDR6, while the T400 uses a 64-bit bus with 4 GB of GDDR6. This affects not just capacity but also bandwidth scaling, as the RX 7900 XTX’s 960.0 GB/s is twelve times the T400’s 80.00 GB/s. The RX 7900 XTX’s predecessor is listed as Navi II and its successor as Navi IV, while the T400’s predecessor is Quadro Volta and its successor is Workstation Ampere.

The release dates differ by roughly six months: the RX 7900 XTX launched on 2022-11-02, and the T400 launched on 2021-05-05. Both are marked as end-of-life in production status. The RX 7900 XTX has a recorded launch MSRP of 999 USD, while the T400 has no launch MSRP in the database.

Where Each One Wins

Based on the recorded benchmarks, the RX 7900 XTX wins every shared test. In Geekbench OpenCL, its 50,465 score is 191.4% higher than the T400’s 17,320, making it the pick for OpenCL compute workloads. In Geekbench Vulkan, its 85,612 score is 426.4% higher than the T400’s 16,263, making it the pick for Vulkan-based rendering or compute. There are no recorded tests where the T400 wins.

The RX 7900 XTX also wins on memory capacity and bandwidth. With 24 GB and 960.0 GB/s, it is suited for large datasets or high-resolution textures, while the T400’s 4 GB and 80.00 GB/s limit its working set. The RX 7900 XTX’s 96 ray tracing cores give it a hardware feature the T400 lacks entirely, which matters for any ray-traced workload in the database’s scope.

The T400 has advantages that are purely in the physical and power domain. Its 30 W TDP is dramatically lower than the RX 7900 XTX’s 355 W, its single-slot design takes less space, and it requires no external power connectors. Its suggested PSU of 200 W is far below the 750 W suggested for the RX 7900 XTX. For a system with tight power or space constraints, the T400 is the more practical card, but the benchmark data offers no performance scenario where it wins.

The percentile data adds nuance. The RX 7900 XTX is at the 64th percentile, the T400 at the 60th. The four-point gap is small, and the RX 7900 XTX’s average score of 19,410 includes low Passmark results that drag it down. For example, its Passmark DirectX 10 score is 166, DirectX 11 is 356, DirectX 12 is 131, and DirectX 9 is 330. Its Passmark G2D is 1267, G3D is 31238, and GPU compute is 17689. These numbers are inconsistent with its Geekbench scores. The T400, with only two benchmarks, does not show this variance. So the RX 7900 XTX wins decisively in the head-to-head tests, but its overall database profile is less uniformly dominant than the two shared results suggest.