NVIDIA RTX A400 vs ATI Radeon HD 4870 Mac Edition

VS

NVIDIA RTX A400

ATI Radeon HD 4870 Mac Edition

We compared two Desktop platform GPUs: 4GB VRAM RTX A400 and 512MB VRAM Radeon HD 4870 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA RTX A400 's Advantages

Released 15 years and 3 months late

Boost Clock1762MHz

More VRAM (4GB vs 512GB)

Lower TDP (50W vs 150W)

ATI Radeon HD 4870 Mac Edition 's Advantages

Larger VRAM bandwidth (108.8GB/s vs 96.00GB/s)

32 additional rendering cores

Score

Benchmark

FP32 (float)

RTX A400 +125%

2.706 TFLOPS

Radeon HD 4870 Mac Edition

1.2 TFLOPS

RTX A400

VS

Radeon HD 4870 Mac Edition

Graphics Card

Apr 2024

Release Date

Jan 2009

Quadro Ampere(Ax000)

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

1417 MHz

Base Clock

-

1762 MHz

Boost Clock

-

1500 MHz

Memory Clock

850 MHz

Memory

4GB

Memory Size

512MB

GDDR6

Memory Type

GDDR5

64bit

Memory Bus

256bit

96.00GB/s

Bandwidth

108.8GB/s

Render Config

-

Compute Units

10

6

SM Count

-

768

Shading Units

800

24

TMUs

40

16

ROPs

16

24

Tensor Cores

-

6

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

256 KB

-

Theoretical Performance

28.19 GPixel/s

Pixel Rate

12.00 GPixel/s

42.29 GTexel/s

Texture Rate

30.00 GTexel/s

2.706 TFLOPS

FP16 (half)

-

2.706 TFLOPS

FP32 (float)

1200 GFLOPS

42.29 GFLOPS

FP64 (double)

240.0 GFLOPS

Board Design

50W

TDP

150W

250 W

Suggested PSU

450 W

4x mini-DisplayPort 1.4a

Outputs

1x DVI 1x mini-DisplayPort 1.0

None

Power Connectors

2x 6-pin

Graphics Processor

GA107

GPU Name

RV770

-

GPU Variant

RV770 XT Mac (215-0669080)

Ampere

Architecture

TeraScale

Samsung

Foundry

TSMC

8 nm

Process Size

55 nm

8.7 billion

Transistors

0.956 billion

200 mm²

Die Size

256 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

3.0

OpenCL

1.1

1.3

Vulkan

N/A

8.6

CUDA

-

6.8

Shader Model

4.1

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