AMD Radeon R7 450 OEM vs AMD Radeon R9 390 X2

VS

AMD Radeon R7 450 OEM

AMD Radeon R9 390 X2

We compared two Desktop platform GPUs: 2GB VRAM Radeon R7 450 OEM 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 R7 450 OEM 's Advantages

Released 9 months late

Lower TDP (65W vs 580W)

AMD Radeon R9 390 X2 's Advantages

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (345.6GB/s vs 72.00GB/s)

2048 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R7 450 OEM

0.947 TFLOPS

Radeon R9 390 X2 +440%

5.12 TFLOPS

Radeon R7 450 OEM

VS

Radeon R9 390 X2

Graphics Card

Jun 2016

Release Date

Sep 2015

Arctic Islands

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1125 MHz

Memory Clock

1350 MHz

Memory

2GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

512bit

72.00GB/s

Bandwidth

345.6GB/s

Render Config

8

Compute Units

40

-

512

Shading Units

2560

32

TMUs

160

16

ROPs

64

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

1024 KB

-

Theoretical Performance

14.80 GPixel/s

Pixel Rate

64.00 GPixel/s

29.60 GTexel/s

Texture Rate

160.0 GTexel/s

-

947.2 GFLOPS

FP32 (float)

5.120 TFLOPS

59.20 GFLOPS

FP64 (double)

640.0 GFLOPS

Board Design

65W

TDP

580W

250 W

Suggested PSU

950 W

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

Outputs

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

None

Power Connectors

4x 8-pin

Graphics Processor

Cape Verde

GPU Name

Grenada

Cape Verde PRO2

GPU Variant

Grenada PRO (215-0880030)

GCN 1.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.5 billion

Transistors

6.2 billion

123 mm²

Die Size

438 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1 (1.2)

OpenCL

2.0

1.2.170

Vulkan

1.2

-

6.5 (5.1)

Shader Model

6.3

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