L40 CNX vs T400
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 533 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 22.00 | no data |
| Architecture | Turing (2018−2022) | Ada Lovelace (2022−2024) |
| GPU code name | TU117 | AD102 |
| Market segment | Workstation | Workstation |
| Release date | 6 May 2021 (4 years ago) | 13 October 2022 (3 years ago) |
Detailed specifications
General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 384 | 18176 |
| Core clock speed | 420 MHz | 1005 MHz |
| Boost clock speed | 1425 MHz | 2475 MHz |
| Number of transistors | 4,700 million | 76,300 million |
| Manufacturing process technology | 12 nm | 4 nm |
| Power consumption (TDP) | 30 Watt | 300 Watt |
| Texture fill rate | 34.20 | 1,406 |
| Floating-point processing power | 1.094 TFLOPS | 89.97 TFLOPS |
| ROPs | 16 | 192 |
| TMUs | 24 | 568 |
| Tensor Cores | no data | 568 |
| Ray Tracing Cores | no data | 142 |
| L1 Cache | 384 KB | 17.8 MB |
| L2 Cache | 1024 KB | 48 MB |
Form factor & compatibility
Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).
| Interface | PCIe 3.0 x16 | PCIe 4.0 x16 |
| Length | no data | 267 mm |
| Width | 1-slot | 2-slot |
| Supplementary power connectors | None | 1x 16-pin |
VRAM capacity and type
Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.
| Memory type | GDDR6 | GDDR6 |
| Maximum RAM amount | 2 GB | 24 GB |
| Memory bus width | 64 Bit | 384 Bit |
| Memory clock speed | 1250 MHz | 2250 MHz |
| Memory bandwidth | 80 GB/s | 864.0 GB/s |
| Resizable BAR | - | + |
Connectivity and outputs
This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.
| Display Connectors | 3x mini-DisplayPort | 1x HDMI 2.1, 3x DisplayPort 1.4a |
| HDMI | - | + |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (12_1) | 12 Ultimate (12_2) |
| Shader Model | 6.6 | 6.7 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 3.0 | 3.0 |
| Vulkan | 1.2 | 1.3 |
| CUDA | 7.5 | 8.9 |
| DLSS | - | + |
Pros & cons summary
| Recency | 6 May 2021 | 13 October 2022 |
| Maximum RAM amount | 2 GB | 24 GB |
| Chip lithography | 12 nm | 4 nm |
| Power consumption (TDP) | 30 Watt | 300 Watt |
T400 has 900% lower power consumption.
L40 CNX, on the other hand, has an age advantage of 1 year, a 1100% higher maximum VRAM amount, and a 200% more advanced lithography process.
We couldn't decide between T400 and L40 CNX. We've got no test results to judge.
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