ATI Radeon HD 4870 Mac Edition vs AMD Radeon RX 6700 XT

VS

ATI Radeon HD 4870 Mac Edition

AMD Radeon RX 6700 XT

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 Mac Edition and 12GB VRAM Radeon RX 6700 XT 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

Lower TDP (150W vs 230W)

AMD Radeon RX 6700 XT 's Advantages

Released 12 years and 2 months late

Boost Clock2581MHz

More VRAM (12GB vs 512GB)

Larger VRAM bandwidth (384.0GB/s vs 108.8GB/s)

1760 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 4870 Mac Edition

1.2 TFLOPS

Radeon RX 6700 XT +1000%

13.21 TFLOPS

Radeon HD 4870 Mac Edition

VS

Radeon RX 6700 XT

Graphics Card

Jan 2009

Release Date

Mar 2021

Radeon R700

Generation

Navi II

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

2321 MHz

-

Boost Clock

2581 MHz

850 MHz

Memory Clock

2000 MHz

Memory

512MB

Memory Size

12GB

GDDR5

Memory Type

GDDR6

256bit

Memory Bus

192bit

108.8GB/s

Bandwidth

384.0GB/s

Render Config

10

Compute Units

40

-

800

Shading Units

2560

40

TMUs

160

16

ROPs

64

-

RT Cores

40

16 KB (per CU)

L1 Cache

128 KB per Array

256 KB

L2 Cache

3 MB

-

L3 Cache

96 MB

Theoretical Performance

12.00 GPixel/s

Pixel Rate

165.2 GPixel/s

30.00 GTexel/s

Texture Rate

413.0 GTexel/s

-

FP16 (half)

26.43 TFLOPS

1200 GFLOPS

FP32 (float)

13.21 TFLOPS

240.0 GFLOPS

FP64 (double)

825.9 GFLOPS

Board Design

150W

TDP

230W

450 W

Suggested PSU

550 W

1x DVI 1x mini-DisplayPort 1.0

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

2x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

RV770

GPU Name

Navi 22

RV770 XT Mac (215-0669080)

GPU Variant

Navi 22 XT (215-127000006)

TeraScale

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

55 nm

Process Size

7 nm

0.956 billion

Transistors

17.2 billion

256 mm²

Die Size

335 mm²

Graphics Features

10.1 (10_1)

DirectX

12 Ultimate (12_2)

3.3

OpenGL

4.6

1.1

OpenCL

2.1

N/A

Vulkan

1.3

-

4.1

Shader Model

6.5

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