AMD Radeon HD 8770 OEM vs ATI Radeon HD 4870 Mac Edition

VS

AMD Radeon HD 8770 OEM

ATI Radeon HD 4870 Mac Edition

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 8770 OEM 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

AMD Radeon HD 8770 OEM 's Advantages

Released 4 years and 8 months late

More VRAM (1024GB vs 512GB)

96 additional rendering cores

Lower TDP (85W vs 150W)

ATI Radeon HD 4870 Mac Edition 's Advantages

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

Score

Benchmark

FP32 (float)

Radeon HD 8770 OEM +56%

1.882 TFLOPS

Radeon HD 4870 Mac Edition

1.2 TFLOPS

Radeon HD 8770 OEM

VS

Radeon HD 4870 Mac Edition

Graphics Card

Sep 2013

Release Date

Jan 2009

Sea Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1500 MHz

Memory Clock

850 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

96.00GB/s

Bandwidth

108.8GB/s

Render Config

14

Compute Units

10

-

896

Shading Units

800

56

TMUs

40

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

16.80 GPixel/s

Pixel Rate

12.00 GPixel/s

58.80 GTexel/s

Texture Rate

30.00 GTexel/s

-

1.882 TFLOPS

FP32 (float)

1200 GFLOPS

117.6 GFLOPS

FP64 (double)

240.0 GFLOPS

Board Design

85W

TDP

150W

250 W

Suggested PSU

450 W

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

Outputs

1x DVI 1x mini-DisplayPort 1.0

1x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Bonaire

GPU Name

RV770

Bonaire XT (215-0839039)

GPU Variant

RV770 XT Mac (215-0669080)

GCN 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.08 billion

Transistors

0.956 billion

160 mm²

Die Size

256 mm²

Graphics Features

12 (12_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

2.0

OpenCL

1.1

1.2

Vulkan

N/A

-

6.3

Shader Model

4.1

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