AMD Radeon HD 8490 OEM vs ATI Radeon HD 4580

VS

AMD Radeon HD 8490 OEM

ATI Radeon HD 4580

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 8490 OEM 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 8490 OEM 's Advantages

Released 1 years and 8 months late

More VRAM (1024GB vs 512GB)

40 additional rendering cores

Lower TDP (35W vs 65W)

ATI Radeon HD 4580 's Advantages

Larger VRAM bandwidth (22.18GB/s vs 14.40GB/s)

Score

Benchmark

FP32 (float)

Radeon HD 8490 OEM +46%

0.28 TFLOPS

Radeon HD 4580

0.191 TFLOPS

Radeon HD 8490 OEM

VS

Radeon HD 4580

Graphics Card

Jul 2013

Release Date

Nov 2011

Sea Islands

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

1024MB

Memory Size

512MB

DDR3

Memory Type

GDDR3

64bit

Memory Bus

128bit

14.40GB/s

Bandwidth

22.18GB/s

Render Config

2

Compute Units

3

-

160

Shading Units

120

8

TMUs

8

4

ROPs

4

-

8 KB (per CU)

L1 Cache

-

128 KB

L2 Cache

128 KB

-

Theoretical Performance

3.500 GPixel/s

Pixel Rate

3.184 GPixel/s

7.000 GTexel/s

Texture Rate

6.368 GTexel/s

-

280.0 GFLOPS

FP32 (float)

191.0 GFLOPS

-

Board Design

35W

TDP

65W

200 W

Suggested PSU

250 W

1x DVI 1x DisplayPort 1.1

Outputs

2x DVI 1x S-Video

None

Power Connectors

None

Graphics Processor

Caicos

GPU Name

RV635

Caicos XTX

GPU Variant

RV635 PRO (215-0682008)

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

0.37 billion

Transistors

0.378 billion

67 mm²

Die Size

135 mm²

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3

1.2

OpenCL

N/A

Vulkan

N/A

-

5.0

Shader Model

4.1

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