ATI Radeon HD 3870 Mac Edition vs AMD Radeon HD 8470 OEM

VS

ATI Radeon HD 3870 Mac Edition

AMD Radeon HD 8470 OEM

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 Mac Edition and 1024MB VRAM Radeon HD 8470 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

Larger VRAM bandwidth (72.06GB/s vs 25.60GB/s)

160 additional rendering cores

AMD Radeon HD 8470 OEM 's Advantages

Released 4 years and 7 months late

More VRAM (1024GB vs 512GB)

Lower TDP (35W vs 106W)

Score

Benchmark

FP32 (float)

Radeon HD 3870 Mac Edition +100%

0.497 TFLOPS

Radeon HD 8470 OEM

0.248 TFLOPS

Radeon HD 3870 Mac Edition

VS

Radeon HD 8470 OEM

Graphics Card

Jun 2008

Release Date

Jan 2013

Radeon R600

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1126 MHz

Memory Clock

800 MHz

Memory

512MB

Memory Size

1024MB

GDDR4

Memory Type

GDDR5

256bit

Memory Bus

64bit

72.06GB/s

Bandwidth

25.60GB/s

Render Config

4

Compute Units

2

-

320

Shading Units

160

16

TMUs

8

16

ROPs

4

-

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

128 KB

-

Theoretical Performance

12.43 GPixel/s

Pixel Rate

3.100 GPixel/s

12.43 GTexel/s

Texture Rate

6.200 GTexel/s

-

497.3 GFLOPS

FP32 (float)

248.0 GFLOPS

99.46 GFLOPS

FP64 (double)

-

Board Design

106W

TDP

35W

300 W

Suggested PSU

200 W

2x DVI 1x S-Video

Outputs

1x DVI 1x HDMI 1.3a

1x 6-pin

Power Connectors

None

Graphics Processor

RV670

GPU Name

Caicos

RV670 XT (215-0708005)

GPU Variant

Caicos XT (215-0804070)

TeraScale

Architecture

TeraScale 2

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.666 billion

Transistors

0.37 billion

192 mm²

Die Size

67 mm²

Graphics Features

10.1 (10_1)

DirectX

11.2 (11_0)

3.3 (full) 4.0 (partial)

OpenGL

4.4

N/A

OpenCL

1.2

N/A

Vulkan

N/A

-

4.1

Shader Model

5.0

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