NVIDIA GeForce GTX TITAN vs NVIDIA T400 Comparison

The Verdict

The recorded benchmark data splits this comparison cleanly along workload lines. The NVIDIA T400 wins the Vulkan test decisively, while the NVIDIA GeForce GTX TITAN dominates the OpenCL test. Users prioritizing modern API performance, particularly Vulkan, should choose the T400, as it delivers a 59.3% higher score in that specific test. Conversely, users whose applications rely heavily on OpenCL should select the GTX TITAN, which posts a 31.5% higher score in that benchmark. The average benchmark score favors the T400 at 16,508 versus the GTX TITAN's 14,373, placing the T400 in the 60th percentile of all GPUs, compared to the GTX TITAN's 56th percentile. The T400 also holds a slight edge in its closest rival comparisons, with its nearest competitor, the NVIDIA GeForce RTX 5090 D V2, scoring 16,504 (a 0% delta), whereas the GTX TITAN's nearest rival, the AMD Radeon RX Vega 11, scores 14,385 (a 0.1% delta in favor of the GTX TITAN).

Architecture Differences

The two cards represent entirely different design generations from NVIDIA. The T400 is built on the Turing architecture using the TU117 chip, fabricated on a 12 nm process at TSMC, containing 4,700 million transistors on a 200 mm² die. The GTX TITAN uses the Kepler architecture with the GK110 chip, manufactured on a 28 nm process, also at TSMC, but packs 7,080 million transistors onto a much larger 561 mm² die. This results in a transistor density of 23.5M per mm² for the T400 versus 12.6M per mm² for the GTX TITAN.

The memory subsystems differ fundamentally. The T400 comes with 2 GB of GDDR6 memory on a 64-bit bus, delivering 80.00 GB/s of bandwidth. The GTX TITAN offers 6 GB of GDDR5 memory on a 384-bit bus, providing 288.4 GB/s of bandwidth. Clock speeds also diverge: the T400 runs at a 420 MHz base and 1425 MHz boost, while the GTX TITAN operates at 836 MHz base and 876 MHz boost. Memory clocks are 1250 MHz (10 Gbps effective) for the T400 and 1502 MHz (6 Gbps effective) for the GTX TITAN.

Compute resources show a large gap. The T400 has 384 shading units, 24 texture mapping units, and 16 ROPs. The GTX TITAN carries 2,688 shading units, 224 TMUs, and 48 ROPs. Consequently, the GTX TITAN's pixel rate is 49.06 GPixel/s versus 22.80 GPixel/s for the T400, and its texture rate is 196.2 GTexel/s versus 34.20 GTexel/s. In FP32 compute, the GTX TITAN reaches 4.709 TFLOPS, while the T400 achieves 1,094.4 GFLOPS. The T400 does support FP16 at 2.189 TFLOPS (2:1 ratio), a feature the GTX TITAN lacks entirely. Neither card includes ray tracing or tensor cores.

Power requirements reflect this architectural split. The T400 draws 30 W TDP and needs no external power connectors, with a suggested 200 W PSU. The GTX TITAN has a 250 W TDP, requires 1x 6-pin plus 1x 8-pin power connectors, and needs a 600 W PSU. The T400 is single-slot, while the GTX TITAN is dual-slot. The T400 measures nothing in the recorded dimensions, but the GTX TITAN is 267 mm long, 111 mm high, and 38 mm wide. The T400 outputs to 3x mini-DisplayPort 1.4a, whereas the GTX TITAN offers 2x DVI, 1x HDMI 1.4a, and 1x DisplayPort 1.2. API support also differs: the T400 supports DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.4, while the GTX TITAN supports DirectX 12 (11_0), OpenGL 4.6, and Vulkan 1.2.175.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The NVIDIA T400 records an average benchmark score of 16,508, compared to 14,373 for the NVIDIA GeForce GTX TITAN.

Q: What is the difference in Vulkan performance between the two cards?

A: The T400 scores 15,976 in the Geekbench Vulkan test, which is 59.3% higher than the GTX TITAN's score of 10,027.

Q: How do the cards compare in OpenCL performance?

A: The GTX TITAN scores 24,873 in the Geekbench OpenCL test, which is 31.5% higher than the T400's score of 17,039.

Q: Which card has more memory bandwidth?

A: The GTX TITAN has significantly higher memory bandwidth at 288.4 GB/s, compared to 80.00 GB/s for the T400.

Q: What are the power consumption figures for each card?

A: The T400 has a TDP of 30 W, while the GTX TITAN has a TDP of 250 W.

Q: Which GPU is newer and what architecture does each use?

A: The T400 was released in 2021 and uses the Turing architecture, while the GTX TITAN was released in 2013 and uses the Kepler architecture.

Specification Differences

The two cards differ across nearly every specification field. The T400 uses the TU117 chip on a 12 nm process, while the GTX TITAN uses GK110 on a 28 nm process. Transistor counts are 4,700 million versus 7,080 million, with die sizes of 200 mm² versus 561 mm². Transistor density is 23.5M per mm² for the T400 and 12.6M per mm² for the GTX TITAN.

Clock speeds: the T400 has a 420 MHz base and 1425 MHz boost, while the GTX TITAN has an 836 MHz base and 876 MHz boost. Memory clocks are 1250 MHz (10 Gbps effective) for the T400 and 1502 MHz (6 Gbps effective) for the GTX TITAN. Memory capacity is 2 GB GDDR6 for the T400 versus 6 GB GDDR5 for the GTX TITAN. Bus widths are 64-bit versus 384-bit, and bandwidths are 80.00 GB/s versus 288.4 GB/s.

Compute units: the T400 has 384 shading units, 24 TMUs, and 16 ROPs; the GTX TITAN has 2,688 shading units, 224 TMUs, and 48 ROPs. Pixel rates are 22.80 GPixel/s versus 49.06 GPixel/s. Texture rates are 34.20 GTexel/s versus 196.2 GTexel/s. FP32 performance is 1,094.4 GFLOPS versus 4.709 TFLOPS. The T400 has FP16 at 2.189 TFLOPS (2:1), while the GTX TITAN has no FP16 data.

Power and physical specs: TDP is 30 W versus 250 W. The T400 is single-slot with no power connectors and a suggested 200 W PSU; the GTX TITAN is dual-slot with 1x 6-pin + 1x 8-pin connectors and a suggested 600 W PSU. The GTX TITAN measures 267 mm in length, 111 mm in height, and 38 mm in width; the T400 has no recorded dimensions. Display outputs are 3x mini-DisplayPort 1.4a for the T400 versus 2x DVI, 1x HDMI 1.4a, and 1x DisplayPort 1.2 for the GTX TITAN. API support differs in DirectX (12_1 versus 11_0) and Vulkan (1.4 versus 1.2.175). Release dates are 2021 for the T400 and 2013 for the GTX TITAN. The GTX TITAN has a launch MSRP of 999 USD.

Head-to-Head Benchmarks

The recorded head-to-head results show one decisive win per card. In the Geekbench Vulkan test, the NVIDIA T400 scores 15,976, beating the GTX TITAN's 10,027 by a margin of 59.3%. This is a substantial gap, indicating that the T400's newer Turing architecture handles Vulkan workloads far more efficiently. The T400 also demonstrates better relative standing; its Vulkan score places it ahead of its average benchmark score, while the GTX TITAN's Vulkan score falls below its average.

In the Geekbench OpenCL test, the NVIDIA GeForce GTX TITAN reverses the outcome, scoring 24,873 against the T400's 17,039, a 31.5% advantage. The GTX TITAN's OpenCL result also exceeds its average benchmark score of 14,373, while the T400's OpenCL score is only slightly above its average of 16,508. This suggests the GTX TITAN's massive compute resources (2,688 shading units versus 384) give it a clear edge in OpenCL workloads, despite its older architecture.

The win tally is even at one apiece, but the magnitude of the victories differs. The T400's Vulkan win is larger in percentage terms (59.3%) than the GTX TITAN's OpenCL win (31.5%). However, the GTX TITAN's OpenCL score is higher in absolute terms (24,873 versus 15,976). The average benchmark score across all tests favors the T400 at 16,508 versus the GTX TITAN's 14,373, a 14.8% difference in the T400's favor.

Where Each One Wins

The NVIDIA T400 wins in scenarios that benefit from modern API support and efficiency. Its Vulkan score of 15,976 is 59.3% ahead of the GTX TITAN, making it the clear choice for Vulkan-based applications, game engines, and compute workloads that leverage this API. The T400 also holds the higher average benchmark score (16,508 versus 14,373) and the higher percentile ranking (60th versus 56th). Its low power draw of 30 W, single-slot design, and lack of external power connectors make it suitable for compact systems with modest PSU requirements, such as the suggested 200 W unit. The T400's support for DirectX 12 (12_1) and Vulkan 1.4 ensures compatibility with current software standards. It also provides FP16 compute at 2.189 TFLOPS, a feature absent from the GTX TITAN.

The NVIDIA GeForce GTX TITAN wins in scenarios demanding raw compute throughput and large memory capacity. Its OpenCL score of 24,873 is 31.5% ahead of the T400, and its FP32 performance of 4.709 TFLOPS dwarfs the T400's 1,094.4 GFLOPS. The GTX TITAN's 6 GB of memory on a 384-bit bus with 288.4 GB/s bandwidth provides far more headroom for memory-intensive workloads, such as large datasets or high-resolution textures. Its pixel rate of 49.06 GPixel/s and texture rate of 196.2 GTexel/s are more than double the T400's respective rates of 22.80 GPixel/s and 34.20 GTexel/s, making it better suited for fill-rate-bound rendering. The GTX TITAN also supports OpenGL 4.6 and Vulkan 1.2.175, though its DirectX support is limited to 12 (11_0). Users with legacy applications optimized for OpenCL or those needing substantial VRAM should favor the GTX TITAN, provided their system can handle its 250 W TDP and dual-slot footprint, along with the required 600 W PSU and 1x 6-pin plus 1x 8-pin power connections.