ATI Radeon HD 3870 Mac Edition vs AMD Radeon R7 250X

VS

ATI Radeon HD 3870 Mac Edition

AMD Radeon R7 250X

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 Mac Edition and 1024MB VRAM Radeon R7 250X 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 72.00GB/s)

AMD Radeon R7 250X 's Advantages

Released 5 years and 8 months late

More VRAM (1024GB vs 512GB)

320 additional rendering cores

Lower TDP (80W vs 106W)

Score

Benchmark

FP32 (float)

Radeon HD 3870 Mac Edition

0.497 TFLOPS

Radeon R7 250X +144%

1.216 TFLOPS

Radeon HD 3870 Mac Edition

VS

Radeon R7 250X

Graphics Card

Jun 2008

Release Date

Feb 2014

Radeon R600

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1126 MHz

Memory Clock

1125 MHz

Memory

512MB

Memory Size

1024MB

GDDR4

Memory Type

GDDR5

256bit

Memory Bus

128bit

72.06GB/s

Bandwidth

72.00GB/s

Render Config

4

Compute Units

10

-

320

Shading Units

640

16

TMUs

40

16

ROPs

16

-

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

12.43 GPixel/s

Pixel Rate

15.20 GPixel/s

12.43 GTexel/s

Texture Rate

38.00 GTexel/s

-

497.3 GFLOPS

FP32 (float)

1216 GFLOPS

99.46 GFLOPS

FP64 (double)

76.00 GFLOPS

Board Design

106W

TDP

80W

300 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

RV670

GPU Name

Cape Verde

RV670 XT (215-0708005)

GPU Variant

Cape Verde XT

TeraScale

Architecture

GCN 1.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.666 billion

Transistors

1.5 billion

192 mm²

Die Size

123 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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