AMD Radeon RX 455 OEM vs AMD Radeon HD 8490 OEM

VS

AMD Radeon RX 455 OEM AMD Radeon HD 8490 OEM

We compared two Desktop platform GPUs: 2GB VRAM Radeon RX 455 OEM and 1024MB VRAM Radeon HD 8490 OEM 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 2 years and 11 months late

More VRAM (2GB vs 1GB)

Larger VRAM bandwidth (104.0GB/s vs 14.40GB/s)

608 additional rendering cores

AMD Radeon HD 8490 OEM 's Advantages

Lower TDP (35W vs 100W)

Score

Benchmark

FP32 (float)

Radeon RX 455 OEM +476%

1.613 TFLOPS

Radeon HD 8490 OEM

0.28 TFLOPS

Radeon RX 455 OEM

VS

Radeon HD 8490 OEM

Graphics Card

Jun 2016

Release Date

Jul 2013

Arctic Islands

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1625 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

64bit

104.0GB/s

Bandwidth

14.40GB/s

Render Config

-

SM Count

-

12

Compute Units

2

768

Shading Units

160

48

TMUs

8

16

ROPs

4

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

128 KB

Theoretical Performance

16.80 GPixel/s

Pixel Rate

3.500 GPixel/s

50.40 GTexel/s

Texture Rate

7.000 GTexel/s

-

FP16 (half)

-

1.613 TFLOPS

FP32 (float)

280.0 GFLOPS

100.8 GFLOPS

FP64 (double)

-

Graphics Processor

Tobago

GPU Name

Caicos

Tobago PRO (215-0875010)

GPU Variant

Caicos XTX

GCN 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.08 billion

Transistors

0.37 billion

160 mm²

Die Size

67 mm²

Board Design

100W

TDP

35W

300 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x DisplayPort 1.1

1x 6-pin

Power Connectors

None

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.0

OpenCL

1.2

Vulkan

N/A

-

CUDA

-

6.3

Shader Model

5.0

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