AMD Radeon R9 285 vs AMD Radeon HD 6970 X2

VS

AMD Radeon R9 285

AMD Radeon HD 6970 X2

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 285 and 2GB VRAM Radeon HD 6970 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 285 's Advantages

256 additional rendering cores

Lower TDP (190W vs 375W)

Score

Benchmark

FP32 (float)

Radeon R9 285 +21%

3.29 TFLOPS

Radeon HD 6970 X2

2.703 TFLOPS

Radeon R9 285

VS

Radeon HD 6970 X2

Graphics Card

Sep 2014

Release Date

Unknown

Volcanic Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

1375 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

176.0GB/s

Bandwidth

176.0GB/s

Render Config

28

Compute Units

24

-

1792

Shading Units

1536

112

TMUs

96

32

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

29.38 GPixel/s

Pixel Rate

28.16 GPixel/s

102.8 GTexel/s

Texture Rate

84.48 GTexel/s

3.290 TFLOPS

FP16 (half)

-

3.290 TFLOPS

FP32 (float)

2.703 TFLOPS

205.6 GFLOPS

FP64 (double)

-

Board Design

190W

TDP

375W

450 W

Suggested PSU

750 W

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

Outputs

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

2x 6-pin

Power Connectors

3x 8-pin

Graphics Processor

Tonga

GPU Name

Antilles

Tonga PRO (215-0851128)

GPU Variant

Antilles XT (215-0807027)

GCN 3.0

Architecture

TeraScale 3

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

5 billion

Transistors

2.64 billion

366 mm²

Die Size

389 mm²

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.1

OpenCL

1.2

1.2.170

Vulkan

N/A

-

6.5

Shader Model

5.0

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