AMD Radeon HD 7870 GHz Edition vs AMD FireStream 9250

VS

AMD Radeon HD 7870 GHz Edition

AMD FireStream 9250

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 GHz Edition and 1024MB VRAM FireStream 9250 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7870 GHz Edition 's Advantages

Released 3 years and 9 months late

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (153.6GB/s vs 63.55GB/s)

480 additional rendering cores

AMD FireStream 9250 's Advantages

Lower TDP (150W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 7870 GHz Edition +156%

2.56 TFLOPS

FireStream 9250

1 TFLOPS

Radeon HD 7870 GHz Edition

VS

FireStream 9250

Graphics Card

Mar 2012

Release Date

Jun 2008

Southern Islands

Generation

FireStream

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1200 MHz

Memory Clock

993 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

256bit

153.6GB/s

Bandwidth

63.55GB/s

Render Config

20

Compute Units

10

-

1280

Shading Units

800

80

TMUs

40

32

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

10.00 GPixel/s

80.00 GTexel/s

Texture Rate

25.00 GTexel/s

-

2.560 TFLOPS

FP32 (float)

1000 GFLOPS

160.0 GFLOPS

FP64 (double)

200.0 GFLOPS

Board Design

175W

TDP

150W

450 W

Suggested PSU

450 W

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

Outputs

1x DVI

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Pitcairn

GPU Name

RV770

Pitcairn XT (215-0828047)

GPU Variant

RV770 PRO

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.8 billion

Transistors

0.956 billion

212 mm²

Die Size

256 mm²

Graphics Features

12 (11_1)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

5.1

Shader Model

4.1

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