ATI Radeon HD 4870 vs AMD Radeon RX 455 OEM

VS

ATI Radeon HD 4870

AMD Radeon RX 455 OEM

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 and 2GB VRAM Radeon RX 455 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4870 's Advantages

Larger VRAM bandwidth (115.2GB/s vs 104.0GB/s)

32 additional rendering cores

AMD Radeon RX 455 OEM 's Advantages

Released 8 years late

More VRAM (2GB vs 512GB)

Lower TDP (100W vs 150W)

Score

Benchmark

FP32 (float)

Radeon HD 4870

1.2 TFLOPS

Radeon RX 455 OEM +34%

1.613 TFLOPS

Radeon HD 4870

VS

Radeon RX 455 OEM

Graphics Card

Jun 2008

Release Date

Jun 2016

Radeon R700

Generation

Arctic Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

900 MHz

Memory Clock

1625 MHz

Memory

512MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

115.2GB/s

Bandwidth

104.0GB/s

Render Config

10

Compute Units

12

-

800

Shading Units

768

40

TMUs

48

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

16.80 GPixel/s

30.00 GTexel/s

Texture Rate

50.40 GTexel/s

-

1200 GFLOPS

FP32 (float)

1.613 TFLOPS

240.0 GFLOPS

FP64 (double)

100.8 GFLOPS

Board Design

150W

TDP

100W

450 W

Suggested PSU

300 W

2x DVI 1x S-Video

Outputs

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

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

RV770

GPU Name

Tobago

RV770 XT (215-0669049)

GPU Variant

Tobago PRO (215-0875010)

TeraScale

Architecture

GCN 2.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.956 billion

Transistors

2.08 billion

256 mm²

Die Size

160 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (12_0)

3.3

OpenGL

4.6

1.1

OpenCL

2.0

N/A

Vulkan

1.2

-

4.1

Shader Model

6.3

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