Tesla K40t vs Tesla T4

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Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking200not rated
Place by popularitynot in top-100not in top-100
Power efficiency27.29no data
ArchitectureTuring (2018−2022)Kepler (2012−2018)
GPU code nameTU104GK110B
Market segmentWorkstationWorkstation
Release date13 September 2018 (6 years ago)22 November 2013 (11 years ago)
Launch price (MSRP)no data$7,699

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 cores25602880
Core clock speed585 MHz745 MHz
Boost clock speed1590 MHz876 MHz
Number of transistors13,600 million7,080 million
Manufacturing process technology12 nm28 nm
Power consumption (TDP)70 Watt245 Watt
Texture fill rate254.4210.2
Floating-point processing power8.141 TFLOPS5.046 TFLOPS
ROPs6448
TMUs160240
Tensor Cores320no data
Ray Tracing Cores40no data

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).

InterfacePCIe 3.0 x16PCIe 3.0 x16
Length168 mm267 mm
Width1-slot2-slot
Supplementary power connectorsNoneno data

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 typeGDDR6GDDR5
Maximum RAM amount16 GB12 GB
Memory bus width256 Bit384 Bit
Memory clock speed1250 MHz1502 MHz
Memory bandwidth320.0 GB/s288.4 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 ConnectorsNo outputsNo outputs

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX12 Ultimate (12_1)12 (11_1)
Shader Model6.55.1
OpenGL4.64.6
OpenCL1.21.2
Vulkan1.2.1311.1.126
CUDA7.53.5

Pros & cons summary


Recency 13 September 2018 22 November 2013
Maximum RAM amount 16 GB 12 GB
Chip lithography 12 nm 28 nm
Power consumption (TDP) 70 Watt 245 Watt

Tesla T4 has an age advantage of 4 years, a 33.3% higher maximum VRAM amount, a 133.3% more advanced lithography process, and 250% lower power consumption.

We couldn't decide between Tesla T4 and Tesla K40t. We've got no test results to judge.


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

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NVIDIA Tesla T4
Tesla T4
NVIDIA Tesla K40t
Tesla K40t

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Community ratings

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