ATI Radeon HD 3870 Mac Edition vs ATI Radeon HD 5770 X2

VS

ATI Radeon HD 3870 Mac Edition

ATI Radeon HD 5770 X2

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 Mac Edition and 1024MB VRAM Radeon HD 5770 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 5770 X2 's Advantages

Released 2 years and 4 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (76.80GB/s vs 72.06GB/s)

480 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 3870 Mac Edition

0.497 TFLOPS

Radeon HD 5770 X2 +173%

1.36 TFLOPS

Radeon HD 3870 Mac Edition

VS

Radeon HD 5770 X2

Graphics Card

Jun 2008

Release Date

Oct 2010

Radeon R600

Generation

Evergreen

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1126 MHz

Memory Clock

1200 MHz

Memory

512MB

Memory Size

1024MB

GDDR4

Memory Type

GDDR5

256bit

Memory Bus

128bit

72.06GB/s

Bandwidth

76.80GB/s

Render Config

4

Compute Units

10

-

320

Shading Units

800

16

TMUs

40

16

ROPs

16

-

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

12.43 GPixel/s

Pixel Rate

13.60 GPixel/s

12.43 GTexel/s

Texture Rate

34.00 GTexel/s

-

497.3 GFLOPS

FP32 (float)

1360 GFLOPS

99.46 GFLOPS

FP64 (double)

-

Board Design

106W

TDP

Unknown

300 W

Suggested PSU

200 W

2x DVI 1x S-Video

Outputs

2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1

1x 6-pin

Power Connectors

-

Graphics Processor

RV670

GPU Name

Juniper

RV670 XT (215-0708005)

GPU Variant

Juniper XT (215-0754013)

TeraScale

Architecture

TeraScale 2

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.666 billion

Transistors

1.04 billion

192 mm²

Die Size

166 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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