ATI Radeon HD 4870 vs ATI Radeon HD 4580

VS

ATI Radeon HD 4870

ATI Radeon HD 4580

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 and 512MB VRAM Radeon HD 4580 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4870 's Advantages

Larger VRAM bandwidth (115.2GB/s vs 22.18GB/s)

680 additional rendering cores

ATI Radeon HD 4580 's Advantages

Released 3 years and 5 months late

Lower TDP (65W vs 150W)

Score

Benchmark

FP32 (float)

Radeon HD 4870 +528%

1.2 TFLOPS

Radeon HD 4580

0.191 TFLOPS

Radeon HD 4870

VS

Radeon HD 4580

Graphics Card

Jun 2008

Release Date

Nov 2011

Radeon R700

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

900 MHz

Memory Clock

693 MHz

Memory

512MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

115.2GB/s

Bandwidth

22.18GB/s

Render Config

10

Compute Units

3

-

800

Shading Units

120

40

TMUs

8

16

ROPs

4

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

128 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

3.184 GPixel/s

30.00 GTexel/s

Texture Rate

6.368 GTexel/s

-

1200 GFLOPS

FP32 (float)

191.0 GFLOPS

240.0 GFLOPS

FP64 (double)

-

Board Design

150W

TDP

65W

450 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

None

Graphics Processor

RV770

GPU Name

RV635

RV770 XT (215-0669049)

GPU Variant

RV635 PRO (215-0682008)

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.956 billion

Transistors

0.378 billion

256 mm²

Die Size

135 mm²

Graphics Features

10.1 (10_1)

DirectX

10.1 (10_1)

3.3

OpenGL

3.3

1.1

OpenCL

N/A

Vulkan

N/A

-

4.1

Shader Model

4.1

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