AMD Radeon R9 270 vs AMD Radeon HD 7790

VS

AMD Radeon R9 270

AMD Radeon HD 7790

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 270 and 1024MB VRAM Radeon HD 7790 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 270 's Advantages

Released 8 months late

Boost Clock925MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (179.2GB/s vs 96.00GB/s)

384 additional rendering cores

AMD Radeon HD 7790 's Advantages

Lower TDP (85W vs 150W)

Score

Benchmark

FP32 (float)

Radeon R9 270 +32%

2.368 TFLOPS

Radeon HD 7790

1.792 TFLOPS

Radeon R9 270

VS

Radeon HD 7790

Graphics Card

Nov 2013

Release Date

Mar 2013

Volcanic Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

900 MHz

Base Clock

-

925 MHz

Boost Clock

-

1400 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

179.2GB/s

Bandwidth

96.00GB/s

Render Config

20

Compute Units

14

-

1280

Shading Units

896

80

TMUs

56

32

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

16.00 GPixel/s

74.00 GTexel/s

Texture Rate

56.00 GTexel/s

-

2.368 TFLOPS

FP32 (float)

1.792 TFLOPS

148.0 GFLOPS

FP64 (double)

112.0 GFLOPS

Board Design

150W

TDP

85W

450 W

Suggested PSU

250 W

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

Outputs

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

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Curacao

GPU Name

Bonaire

Curacao PRO (215-0848000)

GPU Variant

Bonaire XT (215-0839039)

GCN 1.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

2.08 billion

212 mm²

Die Size

160 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.0

1.2

Vulkan

1.2

-

5.1

Shader Model

6.3

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