AMD Radeon HD 6970 vs AMD Radeon R9 280X

VS

AMD Radeon HD 6970

AMD Radeon R9 280X

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6970 and 3GB VRAM Radeon R9 280X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 280X 's Advantages

Released 2 years and 10 months late

Boost Clock1000MHz

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (288.0GB/s vs 176.0GB/s)

512 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6970

2.703 TFLOPS

Radeon R9 280X +51%

4.096 TFLOPS

Radeon HD 6970

VS

Radeon R9 280X

Graphics Card

Dec 2010

Release Date

Oct 2013

Northern Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

850 MHz

-

Boost Clock

1000 MHz

1375 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

384bit

176.0GB/s

Bandwidth

288.0GB/s

Render Config

24

Compute Units

32

-

1536

Shading Units

2048

96

TMUs

128

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

32.00 GPixel/s

84.48 GTexel/s

Texture Rate

128.0 GTexel/s

-

2.703 TFLOPS

FP32 (float)

4.096 TFLOPS

675.8 GFLOPS

FP64 (double)

1024 GFLOPS

Board Design

250W

TDP

250W

600 W

Suggested PSU

600 W

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

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Cayman

GPU Name

Tahiti

Cayman XT (215-0807007)

GPU Variant

Tahiti XTL (215-0821065)

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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