NVIDIA A40 PCIe vs NVIDIA T400 4 GB

VS

NVIDIA A40 PCIe NVIDIA T400 4 GB

We compared two Desktop platform GPUs: 48GB VRAM A40 PCIe and 4GB VRAM T400 4 GB to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA A40 PCIe 's Advantages

Boost Clock has increased by 22% (1740MHz vs 1425MHz)

More VRAM (48GB vs 4GB)

Larger VRAM bandwidth (695.8GB/s vs 80.00GB/s)

10368 additional rendering cores

NVIDIA T400 4 GB 's Advantages

Released 7 months late

Lower TDP (30W vs 300W)

Score

Benchmark

FP32 (float)

A40 PCIe +3320%

37.42 TFLOPS

T400 4 GB

1.094 TFLOPS

Blender

A40 PCIe +1885%

4170

T400 4 GB

210

A40 PCIe

VS

T400 4 GB

Graphics Card

Oct 2020

Release Date

May 2021

Tesla

Generation

Quadro

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1305 MHz

Base Clock

420 MHz

1740 MHz

Boost Clock

1425 MHz

1812 MHz

Memory Clock

1250 MHz

Memory

48GB

Memory Size

4GB

GDDR6

Memory Type

GDDR6

384bit

Memory Bus

64bit

695.8GB/s

Bandwidth

80.00GB/s

Render Config

84

SM Count

6

-

Compute Units

-

10752

Shading Units

384

336

TMUs

24

112

ROPs

16

336

Tensor Cores

-

84

RT Cores

-

128 KB (per SM)

L1 Cache

64 KB (per SM)

6 MB

L2 Cache

1024 KB

Theoretical Performance

194.9 GPixel/s

Pixel Rate

22.80 GPixel/s

584.6 GTexel/s

Texture Rate

34.20 GTexel/s

37.42 TFLOPS

FP16 (half)

2.189 TFLOPS

37.42 TFLOPS

FP32 (float)

1094 GFLOPS

584.6 GFLOPS

FP64 (double)

34.20 GFLOPS

Graphics Processor

GA102

GPU Name

TU117

-

GPU Variant

-

Ampere

Architecture

Turing

Samsung

Foundry

TSMC

8 nm

Process Size

12 nm

28.3 billion

Transistors

4.7 billion

628 mm²

Die Size

200 mm²

Board Design

300W

TDP

30W

700 W

Suggested PSU

200 W

3x DisplayPort 1.4a

Outputs

3x mini-DisplayPort 1.4a

8-pin EPS

Power Connectors

None

Graphics Features

12 Ultimate (12_2)

DirectX

12 (12_1)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.3

Vulkan

1.3

8.6

CUDA

7.5

6.6

Shader Model

6.6

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