NVIDIA RTX A400 vs AMD Radeon HD 7870 GHz Edition

VS

NVIDIA RTX A400

AMD Radeon HD 7870 GHz Edition

We compared two Desktop platform GPUs: 4GB VRAM RTX A400 and 2GB VRAM Radeon HD 7870 GHz Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA RTX A400 's Advantages

Released 12 years and 1 months late

Boost Clock1762MHz

More VRAM (4GB vs 2GB)

Lower TDP (50W vs 175W)

AMD Radeon HD 7870 GHz Edition 's Advantages

Larger VRAM bandwidth (153.6GB/s vs 96.00GB/s)

512 additional rendering cores

Score

Benchmark

FP32 (float)

RTX A400 +5%

2.706 TFLOPS

Radeon HD 7870 GHz Edition

2.56 TFLOPS

RTX A400

VS

Radeon HD 7870 GHz Edition

Graphics Card

Apr 2024

Release Date

Mar 2012

Quadro Ampere

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

727 MHz

Base Clock

-

1762 MHz

Boost Clock

-

1500 MHz

Memory Clock

1200 MHz

Memory

4GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

64bit

Memory Bus

256bit

96.00GB/s

Bandwidth

153.6GB/s

Render Config

-

Compute Units

20

6

SM Count

-

768

Shading Units

1280

24

TMUs

80

16

ROPs

32

24

Tensor Cores

-

6

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

512 KB

-

Theoretical Performance

28.19 GPixel/s

Pixel Rate

32.00 GPixel/s

42.29 GTexel/s

Texture Rate

80.00 GTexel/s

2.706 TFLOPS

FP16 (half)

-

2.706 TFLOPS

FP32 (float)

2.560 TFLOPS

42.29 GFLOPS

FP64 (double)

160.0 GFLOPS

Board Design

50W

TDP

175W

250 W

Suggested PSU

450 W

4x mini-DisplayPort 1.4a

Outputs

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

None

Power Connectors

2x 6-pin

Graphics Processor

GA107

GPU Name

Pitcairn

-

GPU Variant

Pitcairn XT (215-0828047)

Ampere

Architecture

GCN 1.0

Samsung

Foundry

TSMC

8 nm

Process Size

28 nm

8.7 billion

Transistors

2.8 billion

200 mm²

Die Size

212 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

-

6.7

Shader Model

5.1

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