Radeon HD 3850 and Radeon HD 6850M - video card comparison

Radeon HD 3850

Radeon HD 6850M

Architecture

TeraScale (2005−2013)

Terascale 2 (2009−2015)

GPU code name

RV670

Granville Pro/LP

Market segment

Desktop

Laptop

Release date

November 2007

January 2011

Interface

PCIe 2.0 x16

Supplementary power connectors

1x 6-pin

Core clock speed

668 MHz

575 / 675 MHz

Floating-point performance

427.5 gflops

1,080.0 gflops

Manufacturing process technology

55 nm

40 nm

Number of transistors

666 million

1,040 million

Pipelines / CUDA cores

320

800

Power consumption (TDP)

75 Watt

50 Watt

Texture fill rate

10.69

27.00

Memory type

GDDR3

DDR3, GDDR5

Maximum RAM amount

1 GB

Memory bus width

256 Bit

128 Bit

Memory clock speed

1660 MHz

800 MHz

Memory bandwidth

53.12 GB/s

25.6 GB/s

Shared memory

Display Connectors

2x DVI, 1x S-Video

No outputs

DirectX

10.1 (10_1)

11.2 (11_0)

OpenCL

N/A

1.2

OpenGL

3.3

4.4

Shader Model

4.1

5.0

Vulkan

N/A