AMD Radeon RX 455 OEM vs ATI Radeon HD 3870 X2

VS

AMD Radeon RX 455 OEM

ATI Radeon HD 3870 X2

We compared two Desktop platform GPUs: 2GB VRAM Radeon RX 455 OEM and 512MB VRAM Radeon HD 3870 X2 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 8 years and 5 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (104.0GB/s vs 57.66GB/s)

448 additional rendering cores

Lower TDP (100W vs 165W)

Score

Benchmark

FP32 (float)

Radeon RX 455 OEM +205%

1.613 TFLOPS

Radeon HD 3870 X2

0.528 TFLOPS

Radeon RX 455 OEM

VS

Radeon HD 3870 X2

Graphics Card

Jun 2016

Release Date

Jan 2008

Arctic Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1625 MHz

Memory Clock

901 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

256bit

104.0GB/s

Bandwidth

57.66GB/s

Render Config

12

Compute Units

4

-

768

Shading Units

320

48

TMUs

16

ROPs

16

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

256 KB

-

Theoretical Performance

16.80 GPixel/s

Pixel Rate

13.20 GPixel/s

50.40 GTexel/s

Texture Rate

13.20 GTexel/s

-

1.613 TFLOPS

FP32 (float)

528.0 GFLOPS

100.8 GFLOPS

FP64 (double)

105.6 GFLOPS

Board Design

100W

TDP

165W

300 W

Suggested PSU

450 W

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

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Tobago

GPU Name

R680

Tobago PRO (215-0875010)

GPU Variant

R680 XT (215-0708017)

GCN 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.08 billion

Transistors

0.666 billion

160 mm²

Die Size

192 mm²

Graphics Features

12 (12_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3 (full) 4.0 (partial)

2.0

OpenCL

N/A

1.2

Vulkan

N/A

-

6.3

Shader Model

4.1

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