AMD Radeon R9 270 1024SP vs AMD Radeon HD 6770

VS

AMD Radeon R9 270 1024SP

AMD Radeon HD 6770

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 270 1024SP and 1024MB VRAM Radeon HD 6770 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 2 months late

Boost Clock925MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (153.6GB/s vs 76.80GB/s)

224 additional rendering cores

AMD Radeon HD 6770 's Advantages

Lower TDP (108W vs 150W)

Score

Benchmark

FP32 (float)

Radeon R9 270 1024SP +39%

1.894 TFLOPS

Radeon HD 6770

1.36 TFLOPS

Radeon R9 270 1024SP

VS

Radeon HD 6770

Graphics Card

Mar 2015

Release Date

Jan 2011

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

1200 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

153.6GB/s

Bandwidth

76.80GB/s

Render Config

16

Compute Units

10

-

1024

Shading Units

800

64

TMUs

40

32

ROPs

16

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

13.60 GPixel/s

59.20 GTexel/s

Texture Rate

34.00 GTexel/s

-

1.894 TFLOPS

FP32 (float)

1360 GFLOPS

118.4 GFLOPS

FP64 (double)

-

Board Design

150W

TDP

108W

450 W

Suggested PSU

300 W

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

Outputs

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Pitcairn

GPU Name

Juniper

Pitcairn PRO (215-0828062)

GPU Variant

Juniper XT (215-0754013)

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.8 billion

Transistors

1.04 billion

212 mm²

Die Size

166 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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