ATI Radeon HD 3870 Mac Edition vs AMD Radeon HD 8990 OEM

VS

ATI Radeon HD 3870 Mac Edition

AMD Radeon HD 8990 OEM

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 Mac Edition and 3GB VRAM Radeon HD 8990 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 3870 Mac Edition 's Advantages

Lower TDP (106W vs 375W)

AMD Radeon HD 8990 OEM 's Advantages

Released 4 years and 10 months late

Boost Clock1000MHz

More VRAM (3GB vs 512GB)

Larger VRAM bandwidth (288.0GB/s vs 72.06GB/s)

1728 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 3870 Mac Edition

0.497 TFLOPS

Radeon HD 8990 OEM +724%

4.096 TFLOPS

Radeon HD 3870 Mac Edition

VS

Radeon HD 8990 OEM

Graphics Card

Jun 2008

Release Date

Apr 2013

Radeon R600

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

950 MHz

-

Boost Clock

1000 MHz

1126 MHz

Memory Clock

1500 MHz

Memory

512MB

Memory Size

3GB

GDDR4

Memory Type

GDDR5

256bit

Memory Bus

384bit

72.06GB/s

Bandwidth

288.0GB/s

Render Config

4

Compute Units

32

-

320

Shading Units

2048

16

TMUs

128

16

ROPs

32

-

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

768 KB

-

Theoretical Performance

12.43 GPixel/s

Pixel Rate

32.00 GPixel/s

12.43 GTexel/s

Texture Rate

128.0 GTexel/s

-

497.3 GFLOPS

FP32 (float)

4.096 TFLOPS

99.46 GFLOPS

FP64 (double)

1024 GFLOPS

Board Design

106W

TDP

375W

300 W

Suggested PSU

750 W

2x DVI 1x S-Video

Outputs

1x DVI 4x mini-DisplayPort 1.2

1x 6-pin

Power Connectors

2x 8-pin

Graphics Processor

RV670

GPU Name

Malta

RV670 XT (215-0708005)

GPU Variant

Malta XT (215-0849026)

TeraScale

Architecture

GCN 1.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.666 billion

Transistors

4.313 billion

192 mm²

Die Size

365 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_1)

3.3 (full) 4.0 (partial)

OpenGL

4.6

N/A

OpenCL

1.2

N/A

Vulkan

1.2

-

4.1

Shader Model

5.1

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