AMD Radeon HD 8990 OEM vs ATI Radeon HD 4580

VS

AMD Radeon HD 8990 OEM

ATI Radeon HD 4580

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 8990 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 8990 OEM 's Advantages

Released 1 years and 5 months late

Boost Clock1000MHz

More VRAM (3GB vs 512GB)

Larger VRAM bandwidth (288.0GB/s vs 22.18GB/s)

1928 additional rendering cores

ATI Radeon HD 4580 's Advantages

Lower TDP (65W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 8990 OEM +2044%

4.096 TFLOPS

Radeon HD 4580

0.191 TFLOPS

Radeon HD 8990 OEM

VS

Radeon HD 4580

Graphics Card

Apr 2013

Release Date

Nov 2011

Sea Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

950 MHz

Base Clock

-

1000 MHz

Boost Clock

-

1500 MHz

Memory Clock

693 MHz

Memory

3GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

384bit

Memory Bus

128bit

288.0GB/s

Bandwidth

22.18GB/s

Render Config

32

Compute Units

3

-

2048

Shading Units

120

128

TMUs

8

32

ROPs

4

-

16 KB (per CU)

L1 Cache

-

768 KB

L2 Cache

128 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

3.184 GPixel/s

128.0 GTexel/s

Texture Rate

6.368 GTexel/s

-

4.096 TFLOPS

FP32 (float)

191.0 GFLOPS

1024 GFLOPS

FP64 (double)

-

Board Design

375W

TDP

65W

750 W

Suggested PSU

250 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

2x DVI 1x S-Video

2x 8-pin

Power Connectors

None

Graphics Processor

Malta

GPU Name

RV635

Malta XT (215-0849026)

GPU Variant

RV635 PRO (215-0682008)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

4.313 billion

Transistors

0.378 billion

365 mm²

Die Size

135 mm²

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

-

5.1

Shader Model

4.1

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