AMD Radeon HD 6970 X2 vs AMD Radeon Sky 700

VS

AMD Radeon HD 6970 X2

AMD Radeon Sky 700

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6970 X2 and 6GB VRAM Radeon Sky 700 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Sky 700 's Advantages

More VRAM (6GB vs 2GB)

Larger VRAM bandwidth (264.0GB/s vs 176.0GB/s)

256 additional rendering cores

Lower TDP (225W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 6970 X2

2.703 TFLOPS

Radeon Sky 700 +19%

3.226 TFLOPS

Radeon HD 6970 X2

VS

Radeon Sky 700

Graphics Card

Unknown

Release Date

Mar 2013

Northern Islands

Generation

Radeon Sky

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

1375 MHz

Memory

2GB

Memory Size

6GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

384bit

176.0GB/s

Bandwidth

264.0GB/s

Render Config

24

Compute Units

28

-

1536

Shading Units

1792

96

TMUs

112

32

ROPs

32

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

768 KB

-

Theoretical Performance

28.16 GPixel/s

Pixel Rate

28.80 GPixel/s

84.48 GTexel/s

Texture Rate

100.8 GTexel/s

-

2.703 TFLOPS

FP32 (float)

3.226 TFLOPS

-

FP64 (double)

806.4 GFLOPS

Board Design

375W

TDP

225W

750 W

Suggested PSU

550 W

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

Outputs

1x DisplayPort 1.2

3x 8-pin

Power Connectors

1x 8-pin

Graphics Processor

Antilles

GPU Name

Tahiti

Antilles XT (215-0807027)

GPU Variant

Tahiti PRO GL

TeraScale 3

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

2.64 billion

Transistors

4.313 billion

389 mm²

Die Size

352 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_1)

4.4

OpenGL

4.6

1.2

OpenCL

1.2

N/A

Vulkan

1.2

-

5.0

Shader Model

5.1

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