ATI Radeon HD 4870 Mac Edition vs AMD Radeon RX 6400

VS

ATI Radeon HD 4870 Mac Edition

AMD Radeon RX 6400

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 Mac Edition and 4GB VRAM Radeon RX 6400 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4870 Mac Edition 's Advantages

32 additional rendering cores

AMD Radeon RX 6400 's Advantages

Released 13 years late

Boost Clock2321MHz

More VRAM (4GB vs 512GB)

Larger VRAM bandwidth (128.0GB/s vs 108.8GB/s)

Lower TDP (53W vs 150W)

Score

Benchmark

FP32 (float)

Radeon HD 4870 Mac Edition

1.2 TFLOPS

Radeon RX 6400 +197%

3.565 TFLOPS

Radeon HD 4870 Mac Edition

VS

Radeon RX 6400

Graphics Card

Jan 2009

Release Date

Jan 2022

Radeon R700

Generation

Navi II

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 4.0 x4

Clock Speeds

-

Base Clock

1923 MHz

-

Boost Clock

2321 MHz

850 MHz

Memory Clock

2000 MHz

Memory

512MB

Memory Size

4GB

GDDR5

Memory Type

GDDR6

256bit

Memory Bus

64bit

108.8GB/s

Bandwidth

128.0GB/s

Render Config

10

Compute Units

12

-

800

Shading Units

768

40

TMUs

48

16

ROPs

32

-

RT Cores

12

16 KB (per CU)

L1 Cache

128 KB per Array

256 KB

L2 Cache

1024 KB

-

L3 Cache

16 MB

Theoretical Performance

12.00 GPixel/s

Pixel Rate

74.27 GPixel/s

30.00 GTexel/s

Texture Rate

111.4 GTexel/s

-

FP16 (half)

7.130 TFLOPS

1200 GFLOPS

FP32 (float)

3.565 TFLOPS

240.0 GFLOPS

FP64 (double)

222.8 GFLOPS

Board Design

150W

TDP

53W

450 W

Suggested PSU

250 W

1x DVI 1x mini-DisplayPort 1.0

Outputs

1x HDMI 2.1 1x DisplayPort 1.4a

2x 6-pin

Power Connectors

None

Graphics Processor

RV770

GPU Name

Navi 24

RV770 XT Mac (215-0669080)

GPU Variant

Navi 24 XL (215-135000046)

TeraScale

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

55 nm

Process Size

6 nm

0.956 billion

Transistors

5.4 billion

256 mm²

Die Size

107 mm²

Graphics Features

10.1 (10_1)

DirectX

12 Ultimate (12_2)

3.3

OpenGL

4.6

1.1

OpenCL

2.2

N/A

Vulkan

1.3

-

4.1

Shader Model

6.7

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