NVIDIA GeForce GTX 770 vs NVIDIA T400 Comparison

Head-to-Head Benchmarks

The recorded data shows a split decision between the NVIDIA T400 and the NVIDIA GeForce GTX 770, with each card claiming one benchmark victory. In the Geekbench OpenCL test, the T400 scores 17,039 points, outpacing the GTX 770's 15,707 by a margin of 8.5%. This is a notable lead for the newer Turing-based workstation card, placing it ahead of the older Kepler part in raw compute throughput as measured by this API.

The Geekbench Vulkan test tells the opposite story. Here, the GTX 770 scores 19,166 points, while the T400 manages 15,976. The delta in favor of the GTX 770 is 16.6%, a considerably wider gap than the T400's OpenCL advantage. In Vulkan, the older card's higher shading unit count and wider memory bus appear to translate into a substantial performance edge, suggesting that the GTX 770 handles graphics-oriented workloads more effectively than the T400.

Looking at the broader database context, the T400's average benchmark score of 16,508 places it in the 60th percentile of all GPUs. Its nearest rivals include the NVIDIA GeForce RTX 5090 D V2 at 16,504 (0% delta), the AMD Radeon PRO W7500 at 16,415 (0.6% ahead), and the NVIDIA RTX PRO 6000 Blackwell at 16,408 (0.6% behind). The T400 essentially sits at parity with these cards in the aggregate, despite the massive generational and performance-class differences implied by those names. This suggests the T400's OpenCL result is doing heavy lifting in its overall score.

For the GTX 770, the average benchmark score is 14,747, placing it in the 57th percentile of all GPUs. Its nearest rivals are the AMD Radeon RX 5500 XT at 14,692 (the GTX 770 is 0.4% ahead), the NVIDIA Quadro M2000 at 14,532 (1.5% ahead), the NVIDIA GeForce GTX 660 Ti at 15,063 (2.1% behind), and the AMD Radeon Pro 560X at 15,082 (2.2% behind). The GTX 770's aggregate score is dragged down by its weaker OpenCL result, but its Vulkan score of 19,166 is the single highest figure across both cards in either benchmark.

The head-to-head data therefore shows a card that wins in compute-oriented OpenCL (the T400) and a card that wins in graphics-oriented Vulkan (the GTX 770). The wins are balanced at one apiece, but the magnitude of the Vulkan loss for the T400 is roughly double the magnitude of its OpenCL win. This asymmetry matters for anyone choosing between them.

The Verdict

From the recorded data, the NVIDIA T400 is the better choice for workloads that rely on OpenCL compute. Its 8.5% lead over the GTX 770 in that benchmark, combined with its higher overall average score (16,508 versus 14,747), shows a card that handles general-purpose compute tasks more efficiently. The T400 also sits in a higher percentile (60th versus 57th), indicating that its aggregate performance is closer to the top of the database's GPU population.

The NVIDIA GeForce GTX 770 is the better choice for Vulkan-based applications. Its 16.6% lead over the T400 in that benchmark is decisive, and its raw score of 19,166 exceeds any score the T400 achieves in either test. For users running modern graphics APIs or games that leverage Vulkan, the GTX 770's higher shading unit count (1,536 versus 384) and wider memory bus (256-bit versus 64-bit) provide a clear performance advantage.

The data does not support a single universal winner. The choice depends entirely on the API and workload mix. If the user's application stack is dominated by OpenCL, the T400 wins. If Vulkan is the primary API, the GTX 770 wins. The T400's lower power draw (30 W versus 230 W) and single-slot form factor make it a more flexible card for constrained environments, but the GTX 770's superior Vulkan performance cannot be ignored.

Architecture Differences

The two cards are built on fundamentally different architectures, reflecting their different release eras. The NVIDIA T400 uses the TU117 chip, which is based on the Turing architecture, manufactured on a 12 nm process at TSMC. The chip contains 4,700 million transistors on a die size of 200 mm², giving a transistor density of 23.5 million per mm². The T400 belongs to the Quadro Turing (Tx000) generation and was released in 2021.

The NVIDIA GeForce GTX 770 uses the GK104 chip, based on the older Kepler architecture, manufactured on a 28 nm process at TSMC. This chip contains 3,540 million transistors on a larger die size of 294 mm², resulting in a lower transistor density of 12.0 million per mm². The GTX 770 belongs to the GeForce 700 generation and was released in 2013.

The architectural differences extend to feature support. The T400 supports DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.4. The GTX 770 supports DirectX 12 (11_0), OpenGL 4.6, and Vulkan 1.2.175. The T400's newer architecture allows for a higher DirectX feature level and a more recent Vulkan version, which may explain its superior OpenCL performance despite having far fewer shading units.

Neither card includes ray tracing cores or tensor cores, as both the TU117 and GK104 chips predate or omit these specialized units. The T400's Turing architecture does offer a 2:1 FP16 ratio, delivering 2.189 TFLOPS of half-precision compute, while the GTX 770 has no recorded FP16 capability. This makes the T400 more suitable for workloads that benefit from half-precision arithmetic.

Specification Differences

The specification sheet reveals stark contrasts between the two cards in nearly every measurable category. The T400 has a base clock of 420 MHz and a boost clock of 1,425 MHz, while the GTX 770 runs at a base clock of 1,046 MHz and a boost clock of 1,085 MHz. The T400's boost clock is significantly higher, which helps compensate for its lower base clock and fewer cores.

Memory configurations differ substantially. The T400 has 2 GB of GDDR6 memory on a 64-bit bus, delivering 80.00 GB/s of bandwidth. The GTX 770 also has 2 GB of memory, but it is GDDR5 on a 256-bit bus, delivering 224.4 GB/s. The GTX 770's memory bandwidth is nearly three times higher, which is a major factor in its Vulkan performance advantage.

The compute resources are heavily skewed toward the GTX 770. It has 1,536 shading units, 128 texture mapping units, and 32 ROPs, compared to the T400's 384 shading units, 24 TMUs, and 16 ROPs. This translates to a pixel rate of 34.72 GPixel/s and a texture rate of 138.9 GTexel/s for the GTX 770, versus 22.80 GPixel/s and 34.20 GTexel/s for the T400. The GTX 770's FP32 performance is 3.333 TFLOPS, while the T400 delivers 1,094.4 GFLOPS.

Power and physical specifications also differ sharply. The T400 has a TDP of 30 W, requires no power connectors, and is a single-slot card. The GTX 770 has a TDP of 230 W, requires one 6-pin and one 8-pin power connector, and is a dual-slot card. The suggested power supply for the T400 is 200 W, while the GTX 770 suggests 550 W. The GTX 770 measures 267 mm in length, 111 mm in height, and 38 mm in width, while the T400's dimensions are not recorded.

Display outputs differ as well. The T400 offers three mini-DisplayPort 1.4a outputs, while the GTX 770 offers two DVI, one HDMI 1.4a, and one DisplayPort 1.2. The T400's launch MSRP is not recorded, but the GTX 770 has a launch MSRP of 399 USD.

FAQ

Q: Which card has the higher average benchmark score?

A: The NVIDIA T400 has an average benchmark score of 16,508, while the NVIDIA GeForce GTX 770 has an average of 14,747.

Q: How do the cards compare in the Geekbench Vulkan test?

A: The NVIDIA GeForce GTX 770 scores 19,166 in Geekbench Vulkan, which is 16.6% higher than the NVIDIA T400's score of 15,976.

Q: What is the memory bandwidth difference between the two cards?

A: The NVIDIA GeForce GTX 770 has a memory bandwidth of 224.4 GB/s on a 256-bit bus, while the NVIDIA T400 has 80.00 GB/s on a 64-bit bus.

Q: Which card has more shading units?

A: The NVIDIA GeForce GTX 770 has 1,536 shading units, compared to the NVIDIA T400's 384 shading units.

Q: What is the power draw difference?

A: The NVIDIA T400 has a TDP of 30 W, while the NVIDIA GeForce GTX 770 has a TDP of 230 W.

Q: Which card supports a newer Vulkan version?

A: The NVIDIA T400 supports Vulkan 1.4, while the NVIDIA GeForce GTX 770 supports Vulkan 1.2.175.

Where Each One Wins

The NVIDIA T400 wins in OpenCL compute workloads. Its score of 17,039 in Geekbench OpenCL is 8.5% higher than the GTX 770's 15,707. This advantage, combined with its higher average benchmark score and 60th percentile standing, makes it the stronger choice for compute-focused tasks such as general-purpose GPU processing, scientific calculations, or any application that relies heavily on OpenCL. The T400 also wins on efficiency, with a 30 W TDP versus 230 W, and its single-slot design with no power connectors makes it far easier to install in space-constrained systems. Its support for Vulkan 1.4 and DirectX 12 (12_1) also gives it a more modern API feature set.

The NVIDIA GeForce GTX 770 wins decisively in Vulkan graphics workloads. Its score of 19,166 is 16.6% higher than the T400's 15,976, and this is the largest performance gap recorded in the head-to-head comparison. The GTX 770's 1,536 shading units, 128 TMUs, and 256-bit memory bus provide substantial raw graphics throughput, reflected in its pixel rate of 34.72 GPixel/s and texture rate of 138.9 GTexel/s. For gaming, Vulkan-based applications, or any workload that stresses traditional graphics rendering, the GTX 770 is the clear winner. Its higher memory bandwidth of 224.4 GB/s ensures that texture-heavy scenes and high-resolution buffers are handled more efficiently.

The balanced win count (one each) means the decision rests on the user's specific application mix. The data supports a recommendation for the T400 when compute efficiency and modern API support are priorities, and the GTX 770 when maximum Vulkan graphics performance is required. Neither card dominates the other across both benchmarks, so the choice must be driven by the workload.