GPU Comparison

The NVIDIA T400 and NVIDIA GeForce RTX 5090 D V2 occupy opposite ends of the GPU spectrum, yet the database shows their average benchmark scores are nearly identical. The T400 averages 16,508 points, while the RTX 5090 D V2 averages 16,504 points, a delta of 0%. This near-perfect parity is an artifact of the testing methodology, as the two cards were evaluated on entirely different benchmark suites. The T400’s score comes from Geekbench OpenCL and Vulkan tests, while the RTX 5090 D V2’s score comes solely from 3DMark Steel Nomad DX12. Do not mistake these numbers for real-world performance equivalence; the architectural gap between these two cards is immense.

Head-to-Head Benchmarks

There are no direct head-to-head benchmark results in the database, meaning no single test was run on both cards. Instead, each card was evaluated on its own suite, and the aggregate scores were compared. The T400 produced 17,039 in Geekbench OpenCL and 15,976 in Geekbench Vulkan, yielding an average of 16,508. The RTX 5090 D V2 produced 16,504 in 3DMark Steel Nomad DX12, which is its only listed benchmark.

Comparing these scores directly is misleading. The T400’s Geekbench OpenCL result of 17,039 is 3.1% higher than its own Vulkan score of 15,976, showing modest variance between APIs. The RTX 5090 D V2’s single benchmark score of 16,504 sits 0.02% below the T400’s average, a difference of just 4 points. In the nearestRivals listing, the T400 shows a 0% delta against the RTX 5090 D V2, while the RTX 5090 D V2 shows a 0% delta against the T400.

The real story emerges when looking at other rivals. Both cards sit within 0.9% of the AMD Radeon RX 5700 XT (16,361 points). The T400 is 0.6% ahead of the AMD Radeon PRO W7500 (16,415) and 0.6% ahead of the NVIDIA RTX PRO 6000 Blackwell (16,408). The RTX 5090 D V2 shows the same 0.5-0.6% leads over those same rivals. The data suggests that within this specific benchmark aggregation methodology, all four GPUs are statistically tied, with a spread of only 147 points between the highest and lowest scores.

The lack of shared benchmarks makes any victory claim impossible. The T400 wins on Geekbench Vulkan parity checks, but the RTX 5090 D V2 wins on raw compute capability as evidenced by its 104.8 TFLOPS FP32 rating versus the T400’s 1,094.4 GFLOPS. The benchmark scores do not reflect this massive compute gap because they measure different workloads.

FAQ

Q: Which card has the higher average benchmark score?

A: The NVIDIA T400 averages 16,508 points, which is 4 points higher than the RTX 5090 D V2’s 16,504 points. The delta between them is 0%.

Q: What benchmark tests were used for each card?

A: The T400 was tested with Geekbench OpenCL (17,039) and Geekbench Vulkan (15,976). The RTX 5090 D V2 was tested with 3DMark Steel Nomad DX12 (16,504).

Q: How do these cards compare to the AMD Radeon RX 5700 XT?

A: Both cards lead the RX 5700 XT (16,361) by 0.9%. The T400 is 147 points ahead, and the RTX 5090 D V2 is 143 points ahead.

Q: What is the VRAM capacity difference?

A: The T400 has 2 GB of GDDR6 memory, while the RTX 5090 D V2 has 24 GB of GDDR7 memory. The RTX 5090 D V2’s memory bus is 384-bit versus the T400’s 64-bit bus.

Q: What are the power requirements for each card?

A: The T400 has a TDP of 30 W and requires no power connectors, with a suggested PSU of 200 W. The RTX 5090 D V2 has a TDP of 575 W and requires a 16-pin connector, with a suggested PSU of 950 W.

Q: What is the production status of each card?

A: The T400 is end-of-life, released on 2021-05-05. The RTX 5090 D V2 is active, released on 2025-08-14.

Architecture Differences

The T400 is built on the Turing architecture using the TU117 chip manufactured on a 12 nm process at TSMC. It packs 4,700 million transistors on a 200 mm² die, resulting in a transistor density of 23.5M per mm². The RTX 5090 D V2 uses the Blackwell 2.0 architecture with the GB202 chip on a 5 nm process, also at TSMC. It contains 92,200 million transistors on a 750 mm² die, achieving 122.9M transistors per mm². This is a 5.2x density advantage for the RTX 5090 D V2.

The T400 has 384 shading units, 24 TMUs, and 16 ROPs. It has no RT cores and no tensor cores. The RTX 5090 D V2 has 21,760 shading units, 680 TMUs, and 176 ROPs, plus 170 RT cores and 680 tensor cores. The shading unit count is 56.7x higher on the RTX 5090 D V2.

Clock speeds tell a similar story. The T400 runs at a 420 MHz base and 1,425 MHz boost, while the RTX 5090 D V2 runs at 2,017 MHz base and 2,407 MHz boost. The RTX 5090 D V2’s boost clock is 69% higher. Memory clocks differ massively: the T400 uses 1,250 MHz (10 Gbps effective) GDDR6, while the RTX 5090 D V2 uses 1,750 MHz (28 Gbps effective) GDDR7.

The T400 supports DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.4. The RTX 5090 D V2 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RTX 5090 D V2 also has a dual-slot form factor with a 304 mm length, 137 mm height, and 48 mm width, while the T400 is single-slot with no listed dimensions.

The Verdict

The data shows two cards that cannot be compared on performance alone because they target fundamentally different workloads. The T400 is a 30 W, single-slot, fanless-capable card with 2 GB VRAM, designed for basic display output and light compute. The RTX 5090 D V2 is a 575 W, dual-slot behemoth with 24 GB VRAM and 1.34 TB/s bandwidth, designed for extreme compute and gaming.

If you need a low-profile card for a workstation that drives multiple displays with minimal power draw, the T400 is the only rational choice. Its 3x mini-DisplayPort 1.4a outputs and 200 W suggested PSU mean it can slot into almost any system. If you need maximum compute throughput, the RTX 5090 D V2’s 104.8 TFLOPS FP32 performance is 95.8x higher than the T400’s 1,094.4 GFLOPS.

The benchmark averages are a statistical anomaly, not a performance endorsement. The RTX 5090 D V2 has a launch MSRP of 2,299 USD. The T400 has no listed launch MSRP. The production status tells the story: the T400 is end-of-life, while the RTX 5090 D V2 is active and current.

Choose the T400 for legacy compatibility, minimal power, and multi-display office work. Choose the RTX 5090 D V2 for anything requiring serious GPU compute, ray tracing, or high-end gaming. There is no middle ground.

Specification Differences

| Specification | NVIDIA T400 | NVIDIA GeForce RTX 5090 D V2 |

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

| Architecture | Turing | Blackwell 2.0 |

| Process Node | 12 nm | 5 nm |

| Transistors | 4,700 million | 92,200 million |

| Die Size | 200 mm² | 750 mm² |

| Base Clock | 420 MHz | 2,017 MHz |

| Boost Clock | 1,425 MHz | 2,407 MHz |

| Memory Size | 2 GB | 24 GB |

| Memory Type | GDDR6 | GDDR7 |

| Memory Bus | 64 bit | 384 bit |

| Memory Bandwidth | 80.00 GB/s | 1.34 TB/s |

| Shading Units | 384 | 21,760 |

| TMUs | 24 | 680 |

| ROPs | 16 | 176 |

| RT Cores | None | 170 |

| Tensor Cores | None | 680 |

| FP32 Performance | 1,094.4 GFLOPS | 104.8 TFLOPS |

| FP16 Performance | 2.189 TFLOPS (2:1) | 104.8 TFLOPS (1:1) |

| TDP | 30 W | 575 W |

| Slot Width | Single-slot | Dual-slot |

| Power Connectors | None | 1x 16-pin |

| Suggested PSU | 200 W | 950 W |

| Bus Interface | PCIe 3.0 x16 | PCIe 5.0 x16 |

| Display Outputs | 3x mini-DisplayPort 1.4a | 1x HDMI 2.1b, 3x DisplayPort 2.1b |

| DirectX Support | 12 (12_1) | 12 Ultimate (12_2) |

| Release Date | 2021-05-05 | 2025-08-14 |

| Production Status | End-of-life | Active |

Where Each One Wins

The T400 wins in power efficiency and physical footprint. Its 30 W TDP is 19.2x lower than the RTX 5090 D V2’s 575 W. It requires no power connectors and only a 200 W PSU, making it drop-in compatible with almost any existing office PC. Its single-slot design allows for dense multi-GPU configurations, and its 3x mini-DisplayPort outputs support multi-monitor setups without adapters. The T400 also wins on legacy support, with PCIe 3.0 compatibility that works in older motherboards.

The RTX 5090 D V2 wins on every compute metric. Its 104.8 TFLOPS FP32 is 95.8x the T400’s output. Its 24 GB VRAM is 12x larger, and its 1.34 TB/s bandwidth is 16.75x higher. The 170 RT cores and 680 tensor cores enable ray tracing and AI workloads that the T400 cannot handle at all. The PCIe 5.0 interface provides 2.5x the bandwidth of PCIe 3.0. The RTX 5090 D V2’s 423.6 GPixel/s pixel rate is 18.6x the T400’s 22.80 GPixel/s, and its 1,636.8 GTexel/s texture rate is 47.9x higher.

For gaming, the RTX 5090 D V2 is the only option with its DirectX 12 Ultimate support and modern display outputs. For basic 2D workloads, legacy applications, or as a display adapter in a server, the T400 suffices. The RTX 5090 D V2 is also the only card with a successor (GeForce 60) listed, while the T400’s successor is Workstation Ampere. The T400’s predecessor is Quadro Volta; the RTX 5090 D V2’s predecessor is GeForce 40.

The benchmark scores suggest parity, but the specification sheet tells the true story. The T400 is a 2021-era entry-level workstation card. The RTX 5090 D V2 is a 2025 flagship. They share a manufacturer and little else.