L40S vs T400 4 GB

Place in the ranking	457	84
Place by popularity	not in top-100	not in top-100
Power efficiency	22.68	10.07
Architecture	Turing (2018−2022)	Ada Lovelace (2022−2024)
GPU code name	TU117	AD102
Market segment	Workstation	Workstation
Release date	6 May 2021 (3 years ago)	13 October 2022 (2 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	1110 MHz
Boost clock speed	1425 MHz	2520 MHz
Number of transistors	4,700 million	76,300 million
Manufacturing process technology	12 nm	5 nm
Power consumption (TDP)	30 Watt	300 Watt
Texture fill rate	34.20	1,431
Floating-point processing power	1.094 TFLOPS	91.61 TFLOPS
ROPs	16	192
TMUs	24	568
Tensor Cores	no data	568
Ray Tracing Cores	no data	142

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	4 GB	48 GB
Memory bus width	64 Bit	384 Bit
Memory clock speed	1250 MHz	2250 MHz
Memory bandwidth	80 GB/s	864.0 GB/s

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors	3x mini-DisplayPort	1x HDMI 2.1, 3x DisplayPort 1.4a
HDMI	-	+

API compatibility

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

Synthetic benchmark performance

Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.

Combined synthetic benchmark score

This is our combined benchmark score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

T400 4 GB 9.77

L40S 43.33
+344%

Passmark

This is the most ubiquitous GPU benchmark. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.

T400 4 GB 3767

L40S 16715
+344%

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Pros & cons summary

Performance score	9.77	43.33
Recency	6 May 2021	13 October 2022
Maximum RAM amount	4 GB	48 GB
Chip lithography	12 nm	5 nm
Power consumption (TDP)	30 Watt	300 Watt

T400 4 GB has 900% lower power consumption.

L40S, on the other hand, has a 343.5% higher aggregate performance score, an age advantage of 1 year, a 1100% higher maximum VRAM amount, and a 140% more advanced lithography process.

The L40S is our recommended choice as it beats the T400 4 GB in performance tests.

Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.