AMD Radeon Sky 700 vs AMD Radeon R9 390 X2

VS

AMD Radeon Sky 700

AMD Radeon R9 390 X2

We compared two Desktop platform GPUs: 6GB VRAM Radeon Sky 700 and 8GB VRAM Radeon R9 390 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Sky 700 's Advantages

Lower TDP (225W vs 580W)

AMD Radeon R9 390 X2 's Advantages

Released 2 years and 6 months late

More VRAM (8GB vs 6GB)

Larger VRAM bandwidth (345.6GB/s vs 264.0GB/s)

768 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon Sky 700

3.226 TFLOPS

Radeon R9 390 X2 +58%

5.12 TFLOPS

Radeon Sky 700

VS

Radeon R9 390 X2

Graphics Card

Mar 2013

Release Date

Sep 2015

Radeon Sky

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

1350 MHz

Memory

6GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

512bit

264.0GB/s

Bandwidth

345.6GB/s

Render Config

28

Compute Units

40

-

1792

Shading Units

2560

112

TMUs

160

32

ROPs

64

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

768 KB

L2 Cache

1024 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

64.00 GPixel/s

100.8 GTexel/s

Texture Rate

160.0 GTexel/s

-

3.226 TFLOPS

FP32 (float)

5.120 TFLOPS

806.4 GFLOPS

FP64 (double)

640.0 GFLOPS

Board Design

225W

TDP

580W

550 W

Suggested PSU

950 W

1x DisplayPort 1.2

Outputs

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

1x 8-pin

Power Connectors

4x 8-pin

Graphics Processor

Tahiti

GPU Name

Grenada

Tahiti PRO GL

GPU Variant

Grenada PRO (215-0880030)

GCN 1.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

6.2 billion

352 mm²

Die Size

438 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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