ATI Radeon HD 4870 Mac Edition vs AMD Radeon HD 7790

VS

ATI Radeon HD 4870 Mac Edition

AMD Radeon HD 7790

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 Mac Edition and 1024MB VRAM Radeon HD 7790 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

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

AMD Radeon HD 7790 's Advantages

Released 4 years and 2 months late

More VRAM (1024GB vs 512GB)

96 additional rendering cores

Lower TDP (85W vs 150W)

Score

Benchmark

FP32 (float)

Radeon HD 4870 Mac Edition

1.2 TFLOPS

Radeon HD 7790 +49%

1.792 TFLOPS

Radeon HD 4870 Mac Edition

VS

Radeon HD 7790

Graphics Card

Jan 2009

Release Date

Mar 2013

Radeon R700

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

850 MHz

Memory Clock

1500 MHz

Memory

512MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

108.8GB/s

Bandwidth

96.00GB/s

Render Config

10

Compute Units

14

-

800

Shading Units

896

40

TMUs

56

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

16.00 GPixel/s

30.00 GTexel/s

Texture Rate

56.00 GTexel/s

-

1200 GFLOPS

FP32 (float)

1.792 TFLOPS

240.0 GFLOPS

FP64 (double)

112.0 GFLOPS

Board Design

150W

TDP

85W

450 W

Suggested PSU

250 W

1x DVI 1x mini-DisplayPort 1.0

Outputs

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

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

RV770

GPU Name

Bonaire

RV770 XT Mac (215-0669080)

GPU Variant

Bonaire XT (215-0839039)

TeraScale

Architecture

GCN 2.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.956 billion

Transistors

2.08 billion

256 mm²

Die Size

160 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (12_0)

3.3

OpenGL

4.6

1.1

OpenCL

2.0

N/A

Vulkan

1.2

-

4.1

Shader Model

6.3

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