AMD Radeon R9 390 X2 vs AMD Radeon HD 8670 OEM

VS

AMD Radeon R9 390 X2

AMD Radeon HD 8670 OEM

We compared two Desktop platform GPUs: 8GB VRAM Radeon R9 390 X2 and 2GB VRAM Radeon HD 8670 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 390 X2 's Advantages

Released 2 years and 8 months late

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (345.6GB/s vs 73.60GB/s)

2176 additional rendering cores

AMD Radeon HD 8670 OEM 's Advantages

Boost Clock1050MHz

Lower TDP (75W vs 580W)

Score

Benchmark

FP32 (float)

Radeon R9 390 X2 +535%

5.12 TFLOPS

Radeon HD 8670 OEM

0.806 TFLOPS

Radeon R9 390 X2

VS

Radeon HD 8670 OEM

Graphics Card

Sep 2015

Release Date

Jan 2013

Pirate Islands

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1000 MHz

-

Boost Clock

1050 MHz

1350 MHz

Memory Clock

1150 MHz

Memory

8GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

512bit

Memory Bus

128bit

345.6GB/s

Bandwidth

73.60GB/s

Render Config

40

Compute Units

6

-

2560

Shading Units

384

160

TMUs

24

64

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

256 KB

-

Theoretical Performance

64.00 GPixel/s

Pixel Rate

8.400 GPixel/s

160.0 GTexel/s

Texture Rate

25.20 GTexel/s

-

5.120 TFLOPS

FP32 (float)

806.4 GFLOPS

640.0 GFLOPS

FP64 (double)

50.40 GFLOPS

Board Design

580W

TDP

75W

950 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x HDMI 1.4a 1x VGA

4x 8-pin

Power Connectors

None

Graphics Processor

Grenada

GPU Name

Oland

Grenada PRO (215-0880030)

GPU Variant

Oland XT (215-0837000)

GCN 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

6.2 billion

Transistors

0.95 billion

438 mm²

Die Size

77 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.0

OpenCL

1.2

Vulkan

1.2

-

6.3

Shader Model

5.1

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