NVIDIA A40 PCIe vs AMD Radeon HD 7870 XT

VS

NVIDIA A40 PCIe

AMD Radeon HD 7870 XT

We compared two Desktop platform GPUs: 48GB VRAM A40 PCIe and 2GB VRAM Radeon HD 7870 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA A40 PCIe 's Advantages

Released 7 years and 11 months late

Boost Clock has increased by 78% (1740MHz vs 975MHz)

More VRAM (48GB vs 2GB)

Larger VRAM bandwidth (695.8GB/s vs 192.0GB/s)

9216 additional rendering cores

AMD Radeon HD 7870 XT 's Advantages

Lower TDP (185W vs 300W)

Score

Benchmark

FP32 (float)

A40 PCIe +1149%

37.42 TFLOPS

Radeon HD 7870 XT

2.995 TFLOPS

A40 PCIe

VS

Radeon HD 7870 XT

Graphics Card

Oct 2020

Release Date

Nov 2012

Tesla

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1305 MHz

Base Clock

925 MHz

1740 MHz

Boost Clock

975 MHz

1812 MHz

Memory Clock

1500 MHz

Memory

48GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

384bit

Memory Bus

256bit

695.8GB/s

Bandwidth

192.0GB/s

Render Config

-

Compute Units

24

84

SM Count

-

10752

Shading Units

1536

336

TMUs

96

112

ROPs

32

336

Tensor Cores

-

84

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per CU)

6 MB

L2 Cache

512 KB

-

Theoretical Performance

194.9 GPixel/s

Pixel Rate

31.20 GPixel/s

584.6 GTexel/s

Texture Rate

93.60 GTexel/s

37.42 TFLOPS

FP16 (half)

-

37.42 TFLOPS

FP32 (float)

2.995 TFLOPS

584.6 GFLOPS

FP64 (double)

748.8 GFLOPS

Board Design

300W

TDP

185W

700 W

Suggested PSU

450 W

3x DisplayPort 1.4a

Outputs

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

8-pin EPS

Power Connectors

2x 6-pin

Graphics Processor

GA102

GPU Name

Tahiti

-

GPU Variant

Tahiti LE (215-0821122)

Ampere

Architecture

GCN 1.0

Samsung

Foundry

TSMC

8 nm

Process Size

28 nm

28.3 billion

Transistors

4.313 billion

628 mm²

Die Size

352 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

3.0

OpenCL

1.2

1.3

Vulkan

1.2

8.6

CUDA

-

6.6

Shader Model

5.1

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