AMD Radeon Sky 700 vs AMD Radeon HD 6390

VS

AMD Radeon Sky 700

AMD Radeon HD 6390

We compared two Desktop platform GPUs: 6GB VRAM Radeon Sky 700 and 1024MB VRAM Radeon HD 6390 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Sky 700 's Advantages

Released 1 years and 8 months late

More VRAM (6GB vs 1024GB)

Larger VRAM bandwidth (264.0GB/s vs 16.00GB/s)

1472 additional rendering cores

AMD Radeon HD 6390 's Advantages

Lower TDP (39W vs 225W)

Score

Benchmark

FP32 (float)

Radeon Sky 700 +816%

3.226 TFLOPS

Radeon HD 6390

0.352 TFLOPS

Radeon Sky 700

VS

Radeon HD 6390

Graphics Card

Mar 2013

Release Date

Jul 2011

Radeon Sky

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

500 MHz

Memory

6GB

Memory Size

1024MB

GDDR5

Memory Type

DDR2

384bit

Memory Bus

128bit

264.0GB/s

Bandwidth

16.00GB/s

Render Config

28

Compute Units

4

-

1792

Shading Units

320

112

TMUs

16

32

ROPs

8

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

768 KB

L2 Cache

256 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

4.400 GPixel/s

100.8 GTexel/s

Texture Rate

8.800 GTexel/s

-

3.226 TFLOPS

FP32 (float)

352.0 GFLOPS

806.4 GFLOPS

FP64 (double)

-

Board Design

225W

TDP

39W

550 W

Suggested PSU

200 W

1x DisplayPort 1.2

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 8-pin

Power Connectors

None

Graphics Processor

Tahiti

GPU Name

Redwood

Tahiti PRO GL

GPU Variant

Redwood LE

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

4.313 billion

Transistors

0.627 billion

352 mm²

Die Size

104 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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