ATI Radeon HD 4890 vs ATI Radeon HD 4580

VS

ATI Radeon HD 4890

ATI Radeon HD 4580

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 4890 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 4890 's Advantages

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (124.8GB/s vs 22.18GB/s)

680 additional rendering cores

ATI Radeon HD 4580 's Advantages

Released 2 years and 7 months late

Lower TDP (65W vs 190W)

Score

Benchmark

FP32 (float)

Radeon HD 4890 +612%

1.36 TFLOPS

Radeon HD 4580

0.191 TFLOPS

Radeon HD 4890

VS

Radeon HD 4580

Graphics Card

Apr 2009

Release Date

Nov 2011

Radeon R700

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

975 MHz

Memory Clock

693 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

124.8GB/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

13.60 GPixel/s

Pixel Rate

3.184 GPixel/s

34.00 GTexel/s

Texture Rate

6.368 GTexel/s

-

1360 GFLOPS

FP32 (float)

191.0 GFLOPS

272.0 GFLOPS

FP64 (double)

-

Board Design

190W

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

RV790

GPU Name

RV635

RV790 XT (215-0758016)

GPU Variant

RV635 PRO (215-0682008)

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.959 billion

Transistors

0.378 billion

282 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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