AMD Radeon HD 8870 OEM vs ATI Radeon HD 5770 Mac Edition

VS

AMD Radeon HD 8870 OEM

ATI Radeon HD 5770 Mac Edition

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 8870 OEM and 1024MB VRAM Radeon HD 5770 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8870 OEM 's Advantages

Released 2 years and 6 months late

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (153.6GB/s vs 76.48GB/s)

480 additional rendering cores

ATI Radeon HD 5770 Mac Edition 's Advantages

Lower TDP (108W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 8870 OEM +88%

2.56 TFLOPS

Radeon HD 5770 Mac Edition

1.36 TFLOPS

Radeon HD 8870 OEM

VS

Radeon HD 5770 Mac Edition

Graphics Card

Jan 2013

Release Date

Jul 2010

Sea Islands

Generation

Evergreen

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1200 MHz

Memory Clock

1195 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

153.6GB/s

Bandwidth

76.48GB/s

Render Config

20

Compute Units

10

-

1280

Shading Units

800

80

TMUs

40

32

ROPs

16

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

13.60 GPixel/s

80.00 GTexel/s

Texture Rate

34.00 GTexel/s

-

2.560 TFLOPS

FP32 (float)

1360 GFLOPS

160.0 GFLOPS

FP64 (double)

-

Board Design

175W

TDP

108W

450 W

Suggested PSU

300 W

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

Outputs

1x DVI 1x DisplayPort 1.1

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Pitcairn

GPU Name

Juniper

Pitcairn XT (215-0828047)

GPU Variant

Juniper XT (215-0754013)

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.8 billion

Transistors

1.04 billion

212 mm²

Die Size

166 mm²

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

5.1

Shader Model

5.0

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