NVIDIA T400 vs NVIDIA GeForce GT 640

VS

NVIDIA T400

NVIDIA GeForce GT 640

We compared two Desktop platform GPUs: 2GB VRAM T400 and 2GB VRAM GeForce GT 640 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA T400 's Advantages

Released 8 years and 11 months late

Boost Clock1425MHz

Larger VRAM bandwidth (80.00GB/s vs 28.51GB/s)

Lower TDP (30W vs 65W)

Score

Benchmark

FP32 (float)

T400 +57%

1.094 TFLOPS

GeForce GT 640

0.693 TFLOPS

T400

VS

GeForce GT 640

Graphics Card

May 2021

Release Date

Jun 2012

Quadro

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

420 MHz

Base Clock

-

1425 MHz

Boost Clock

-

1250 MHz

Memory Clock

891 MHz

Memory

2GB

Memory Size

2GB

GDDR6

Memory Type

DDR3

64bit

Memory Bus

128bit

80.00GB/s

Bandwidth

28.51GB/s

Render Config

-

6

SM Count

-

384

Shading Units

384

24

TMUs

32

16

ROPs

16

-

64 KB (per SM)

L1 Cache

16 KB (per SMX)

1024 KB

L2 Cache

256 KB

-

Theoretical Performance

22.80 GPixel/s

Pixel Rate

7.216 GPixel/s

34.20 GTexel/s

Texture Rate

28.86 GTexel/s

2.189 TFLOPS

FP16 (half)

-

1094 GFLOPS

FP32 (float)

692.7 GFLOPS

34.20 GFLOPS

FP64 (double)

28.86 GFLOPS

Board Design

30W

TDP

65W

200 W

Suggested PSU

250 W

3x mini-DisplayPort 1.4a

Outputs

1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

None

Power Connectors

None

Graphics Processor

TU117

GPU Name

GK107

-

GPU Variant

GK107-300-A2

Turing

Architecture

Kepler

TSMC

Foundry

TSMC

12 nm

Process Size

28 nm

4.7 billion

Transistors

1.27 billion

200 mm²

Die Size

118 mm²

Graphics Features

12 (12_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.3

Vulkan

1.1

7.5

CUDA

3.0

6.6

Shader Model

5.1

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