Tesla T4 vs GeForce GT 640 OEM Rebrand

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Primary details

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

Place in the rankingnot rated196
Place by popularitynot in top-100not in top-100
Power efficiencyno data27.54
ArchitectureFermi 2.0 (2010−2014)Turing (2018−2022)
GPU code nameGF116TU104
Market segmentDesktopWorkstation
Release date24 April 2012 (12 years ago)13 September 2018 (6 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 cores1442560
Core clock speed720 MHz585 MHz
Boost clock speedno data1590 MHz
Number of transistors1,170 million13,600 million
Manufacturing process technology40 nm12 nm
Power consumption (TDP)75 Watt70 Watt
Texture fill rate17.28254.4
Floating-point processing power0.4147 TFLOPS8.141 TFLOPS
ROPs2464
TMUs24160
Tensor Coresno data320
Ray Tracing Coresno data40

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 2.0 x16PCIe 3.0 x16
Length145 mm168 mm
Width1-slot1-slot
Supplementary power connectorsNoneNone

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 typeDDR3GDDR6
Maximum RAM amount1536 MB16 GB
Memory bus width192 Bit256 Bit
Memory clock speed800 MHz1250 MHz
Memory bandwidth38.4 GB/s320.0 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 Connectors2x DVI, 1x mini-HDMINo outputs
HDMI+-

API compatibility

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

DirectX12 (11_0)12 Ultimate (12_1)
Shader Model5.16.5
OpenGL4.64.6
OpenCL1.11.2
VulkanN/A1.2.131
CUDA2.17.5

Pros & cons summary


Recency 24 April 2012 13 September 2018
Maximum RAM amount 1536 MB 16 GB
Chip lithography 40 nm 12 nm
Power consumption (TDP) 75 Watt 70 Watt

Tesla T4 has an age advantage of 6 years, a 966.7% higher maximum VRAM amount, a 233.3% more advanced lithography process, and 7.1% lower power consumption.

We couldn't decide between GeForce GT 640 OEM Rebrand and Tesla T4. We've got no test results to judge.

Be aware that GeForce GT 640 OEM Rebrand is a desktop card while Tesla T4 is a workstation one.


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 GeForce GT 640 OEM Rebrand
GeForce GT 640 OEM Rebrand
NVIDIA Tesla T4
Tesla T4

Comparisons with similar GPUs

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Community ratings

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