AMD Radeon R9 270 1024SP vs AMD Radeon HD 6970

VS

AMD Radeon R9 270 1024SP

AMD Radeon HD 6970

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 270 1024SP and 2GB VRAM Radeon HD 6970 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 270 1024SP 's Advantages

Released 4 years and 3 months late

Boost Clock925MHz

Lower TDP (150W vs 250W)

AMD Radeon HD 6970 's Advantages

Larger VRAM bandwidth (176.0GB/s vs 153.6GB/s)

512 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 270 1024SP

1.894 TFLOPS

Radeon HD 6970 +42%

2.703 TFLOPS

Radeon R9 270 1024SP

VS

Radeon HD 6970

Graphics Card

Mar 2015

Release Date

Dec 2010

Volcanic Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

900 MHz

Base Clock

-

925 MHz

Boost Clock

-

1200 MHz

Memory Clock

1375 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

153.6GB/s

Bandwidth

176.0GB/s

Render Config

16

Compute Units

24

-

1024

Shading Units

1536

64

TMUs

96

32

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

28.16 GPixel/s

59.20 GTexel/s

Texture Rate

84.48 GTexel/s

-

1.894 TFLOPS

FP32 (float)

2.703 TFLOPS

118.4 GFLOPS

FP64 (double)

675.8 GFLOPS

Board Design

150W

TDP

250W

450 W

Suggested PSU

600 W

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

Outputs

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

1x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Pitcairn

GPU Name

Cayman

Pitcairn PRO (215-0828062)

GPU Variant

Cayman XT (215-0807007)

GCN 1.0

Architecture

TeraScale 3

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.8 billion

Transistors

2.64 billion

212 mm²

Die Size

389 mm²

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

5.1

Shader Model

5.0

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