Radeon HD 4870 and Radeon R7 265 - video card comparison

Radeon HD 4870

Radeon R7 265

Architecture

TeraScale (2005−2013)

GCN 1.0 (2012−2020)

GPU code name

RV770

Pitcairn

Market segment

Desktop

Desktop

Release date

June 2008

February 2014

Bus support

-

PCIe 3.0

Interface

PCIe 2.0 x16

PCIe 3.0 x16

Supplementary power connectors

2x 6-pin

1 x 6-pin

Boost clock speed

-

925 MHz

Core clock speed

750 MHz

-

Floating-point performance

1,200.0 gflops

1,894 gflops

Manufacturing process technology

55 nm

28 nm

Number of transistors

956 million

2,800 million

Pipelines / CUDA cores

800

1024

Power consumption (TDP)

150 Watt

150 Watt

Texture fill rate

30.00

59.20

Memory type

GDDR5

GDDR5

Maximum RAM amount

1 GB

4 GB

Memory bus width

256 Bit

256 Bit

Memory clock speed

3600 MHz

1400 MHz

Memory bandwidth

115.2 GB/s

179.2 GB/s

Display Connectors

2x DVI, 1x S-Video

2x DVI, 1x HDMI, 1x DisplayPort

Eyefinity

-

1

HDMI

-

+

DisplayPort support

-

-

DirectX

10.1 (10_1)

DirectX® 12

Mantle

-

-

OpenCL

1.1

1.2

OpenGL

3.3

4.6

Shader Model

4.1

5.1

Vulkan

N/A

-

AppAcceleration

-

-

CrossFire

-

1

DDMA audio

-

+

Enduro

-

-

FreeSync

-

1

HD3D

-

-

PowerTune

-

-

TrueAudio

-

-

ZeroCore

-

-