AMD Radeon HD 7870 GHz Edition vs ATI Radeon HD 4580

VS

AMD Radeon HD 7870 GHz Edition ATI Radeon HD 4580

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 GHz Edition and 512MB VRAM Radeon HD 4580 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

Larger VRAM bandwidth (153.6GB/s vs 22.18GB/s)

1160 additional rendering cores

ATI Radeon HD 4580 's Advantages

Lower TDP (65W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 7870 GHz Edition +1240%

2.56 TFLOPS

Radeon HD 4580

0.191 TFLOPS

Radeon HD 7870 GHz Edition

VS

Radeon HD 4580

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

-

Base Clock

-

Boost Clock

-

1200 MHz

Memory Clock

693 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

153.6GB/s

Bandwidth

22.18GB/s

Render Config

-

SM Count

-

20

Compute Units

3

1280

Shading Units

120

80

TMUs

8

32

ROPs

4

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

128 KB

Theoretical Performance

32.00 GPixel/s

Pixel Rate

3.184 GPixel/s

80.00 GTexel/s

Texture Rate

6.368 GTexel/s

-

FP16 (half)

-

2.560 TFLOPS

FP32 (float)

191.0 GFLOPS

160.0 GFLOPS

FP64 (double)

-

Graphics Processor

Pitcairn

GPU Name

RV635

Pitcairn XT (215-0828047)

GPU Variant

RV635 PRO (215-0682008)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.8 billion

Transistors

0.378 billion

212 mm²

Die Size

135 mm²

Board Design

175W

TDP

65W

450 W

Suggested PSU

250 W

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

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

None

Graphics Features

12 (11_1)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

CUDA

-

5.1

Shader Model

4.1

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