AMD Radeon HD 6390 vs AMD Radeon HD 7770 GHz Edition

VS

AMD Radeon HD 6390

AMD Radeon HD 7770 GHz Edition

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6390 and 1024MB VRAM Radeon HD 7770 GHz Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6390 's Advantages

Lower TDP (39W vs 80W)

AMD Radeon HD 7770 GHz Edition 's Advantages

Released 7 months late

Larger VRAM bandwidth (72.00GB/s vs 16.00GB/s)

320 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6390

0.352 TFLOPS

Radeon HD 7770 GHz Edition +263%

1.28 TFLOPS

Radeon HD 6390

VS

Radeon HD 7770 GHz Edition

Graphics Card

Jul 2011

Release Date

Feb 2012

Northern Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

500 MHz

Memory Clock

1125 MHz

Memory

1024MB

Memory Size

1024MB

DDR2

Memory Type

GDDR5

128bit

Memory Bus

128bit

16.00GB/s

Bandwidth

72.00GB/s

Render Config

4

Compute Units

10

-

320

Shading Units

640

16

TMUs

40

8

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

4.400 GPixel/s

Pixel Rate

16.00 GPixel/s

8.800 GTexel/s

Texture Rate

40.00 GTexel/s

-

352.0 GFLOPS

FP32 (float)

1280 GFLOPS

-

FP64 (double)

80.00 GFLOPS

Board Design

39W

TDP

80W

200 W

Suggested PSU

250 W

1x DVI 1x HDMI 1.3a 1x VGA

Outputs

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

None

Power Connectors

1x 6-pin

Graphics Processor

Redwood

GPU Name

Cape Verde

Redwood LE

GPU Variant

Cape Verde XT

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.627 billion

Transistors

1.5 billion

104 mm²

Die Size

123 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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