AMD Radeon HD 7870 GHz Edition vs ATI Radeon HD 4450

VS

AMD Radeon HD 7870 GHz Edition

ATI Radeon HD 4450

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 GHz Edition and 512MB VRAM Radeon HD 4450 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

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (153.6GB/s vs 6.400GB/s)

1200 additional rendering cores

ATI Radeon HD 4450 's Advantages

Lower TDP (25W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 7870 GHz Edition +2566%

2.56 TFLOPS

Radeon HD 4450

0.096 TFLOPS

Radeon HD 7870 GHz Edition

VS

Radeon HD 4450

Graphics Card

Mar 2012

Release Date

Nov 2011

Southern Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1200 MHz

Memory Clock

400 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

DDR2

256bit

Memory Bus

64bit

153.6GB/s

Bandwidth

6.400GB/s

Render Config

20

Compute Units

1

-

1280

Shading Units

80

TMUs

8

32

ROPs

4

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

64 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

2.400 GPixel/s

80.00 GTexel/s

Texture Rate

4.800 GTexel/s

-

2.560 TFLOPS

FP32 (float)

96.00 GFLOPS

160.0 GFLOPS

FP64 (double)

-

Board Design

175W

TDP

25W

450 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x DisplayPort 1.0

2x 6-pin

Power Connectors

None

Graphics Processor

Pitcairn

GPU Name

RV710

Pitcairn XT (215-0828047)

GPU Variant

RV710 (215-0725016)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.8 billion

Transistors

0.242 billion

212 mm²

Die Size

73 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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