AMD Radeon RX 455 OEM vs AMD Radeon HD 6790

VS

AMD Radeon RX 455 OEM

AMD Radeon HD 6790

We compared two Desktop platform GPUs: 2GB VRAM Radeon RX 455 OEM and 1024MB VRAM Radeon HD 6790 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 5 years and 2 months late

More VRAM (2GB vs 1024GB)

Lower TDP (100W vs 150W)

AMD Radeon HD 6790 's Advantages

Larger VRAM bandwidth (134.4GB/s vs 104.0GB/s)

32 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 455 OEM +20%

1.613 TFLOPS

Radeon HD 6790

1.344 TFLOPS

Radeon RX 455 OEM

VS

Radeon HD 6790

Graphics Card

Jun 2016

Release Date

Apr 2011

Arctic Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1625 MHz

Memory Clock

1050 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

104.0GB/s

Bandwidth

134.4GB/s

Render Config

12

Compute Units

10

-

768

Shading Units

800

48

TMUs

40

16

ROPs

16

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

16.80 GPixel/s

Pixel Rate

13.44 GPixel/s

50.40 GTexel/s

Texture Rate

33.60 GTexel/s

-

1.613 TFLOPS

FP32 (float)

1344 GFLOPS

100.8 GFLOPS

FP64 (double)

-

Board Design

100W

TDP

150W

300 W

Suggested PSU

450 W

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

Outputs

2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1

1x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Tobago

GPU Name

Barts

Tobago PRO (215-0875010)

GPU Variant

Barts LE (215-0798002)

GCN 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.08 billion

Transistors

1.7 billion

160 mm²

Die Size

255 mm²

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.0

OpenCL

1.2

Vulkan

N/A

-

6.3

Shader Model

5.0

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