AMD Radeon RX 455 OEM vs AMD Radeon HD 7790

VS

AMD Radeon RX 455 OEM

AMD Radeon HD 7790

We compared two Desktop platform GPUs: 2GB VRAM Radeon RX 455 OEM and 1024MB VRAM Radeon HD 7790 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 455 OEM 's Advantages

Released 3 years and 3 months late

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (104.0GB/s vs 96.00GB/s)

AMD Radeon HD 7790 's Advantages

128 additional rendering cores

Lower TDP (85W vs 100W)

Score

Benchmark

FP32 (float)

Radeon RX 455 OEM

1.613 TFLOPS

Radeon HD 7790 +11%

1.792 TFLOPS

Radeon RX 455 OEM

VS

Radeon HD 7790

Graphics Card

Jun 2016

Release Date

Mar 2013

Arctic Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1625 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

104.0GB/s

Bandwidth

96.00GB/s

Render Config

12

Compute Units

14

-

768

Shading Units

896

48

TMUs

56

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

16.80 GPixel/s

Pixel Rate

16.00 GPixel/s

50.40 GTexel/s

Texture Rate

56.00 GTexel/s

-

1.613 TFLOPS

FP32 (float)

1.792 TFLOPS

100.8 GFLOPS

FP64 (double)

112.0 GFLOPS

Board Design

100W

TDP

85W

300 W

Suggested PSU

250 W

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

Outputs

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

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Tobago

GPU Name

Bonaire

Tobago PRO (215-0875010)

GPU Variant

Bonaire XT (215-0839039)

GCN 2.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.08 billion

Transistors

2.08 billion

160 mm²

Die Size

160 mm²

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.0

OpenCL

2.0

1.2

Vulkan

1.2

-

6.3

Shader Model

6.3

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