NVIDIA A40 PCIe vs AMD Radeon HD 6870 X2

VS

NVIDIA A40 PCIe

AMD Radeon HD 6870 X2

We compared two Desktop platform GPUs: 48GB VRAM A40 PCIe and 1024MB VRAM Radeon HD 6870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA A40 PCIe 's Advantages

Released 9 years and 3 months late

Boost Clock1740MHz

More VRAM (48GB vs 1024GB)

Larger VRAM bandwidth (695.8GB/s vs 134.4GB/s)

9632 additional rendering cores

Score

Benchmark

FP32 (float)

A40 PCIe +1756%

37.42 TFLOPS

Radeon HD 6870 X2

2.016 TFLOPS

A40 PCIe

VS

Radeon HD 6870 X2

Graphics Card

Oct 2020

Release Date

Jul 2011

Tesla

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1305 MHz

Base Clock

-

1740 MHz

Boost Clock

-

1812 MHz

Memory Clock

1050 MHz

Memory

48GB

Memory Size

1024MB

GDDR6

Memory Type

GDDR5

384bit

Memory Bus

256bit

695.8GB/s

Bandwidth

134.4GB/s

Render Config

-

Compute Units

14

84

SM Count

-

10752

Shading Units

1120

336

TMUs

56

112

ROPs

32

336

Tensor Cores

-

84

RT Cores

-

128 KB (per SM)

L1 Cache

8 KB (per CU)

6 MB

L2 Cache

512 KB

-

Theoretical Performance

194.9 GPixel/s

Pixel Rate

28.80 GPixel/s

584.6 GTexel/s

Texture Rate

50.40 GTexel/s

37.42 TFLOPS

FP16 (half)

-

37.42 TFLOPS

FP32 (float)

2.016 TFLOPS

584.6 GFLOPS

FP64 (double)

-

Board Design

300W

TDP

300W

700 W

Suggested PSU

700 W

3x DisplayPort 1.4a

Outputs

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

8-pin EPS

Power Connectors

-

Graphics Processor

GA102

GPU Name

Barts

-

GPU Variant

Barts XT (215-0798000)

Ampere

Architecture

TeraScale 2

Samsung

Foundry

TSMC

8 nm

Process Size

40 nm

28.3 billion

Transistors

1.7 billion

628 mm²

Die Size

255 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

3.0

OpenCL

1.2

1.3

Vulkan

N/A

8.6

CUDA

-

6.6

Shader Model

5.0

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