GeForce 840M and GeForce GTX 260 OEM - video card comparison

GeForce 840M

GeForce GTX 260 OEM

Architecture

Maxwell (2014−2018)

Tesla 2.0 (2007−2013)

GPU code name

N15S-GT

GT200B

Market segment

Laptop

Desktop

Release date

March 2014

December 2009

Bus support

PCI Express 2.0, PCI Express 3.0

-

Interface

PCIe 3.0 x8

PCIe 2.0 x16

Supplementary power connectors

-

2x 6-pin

Boost clock speed

1124 MHz

-

Core clock speed

1029 MHz

518 MHz

Floating-point performance

863.2 gflops

414.7 gflops

Manufacturing process technology

28 nm

55 nm

Number of transistors

-

1,400 million

Pipelines / CUDA cores

384

192

Power consumption (TDP)

33 Watt

182 Watt

Texture fill rate

17.98

33.15

Memory type

DDR3

GDDR3

Maximum RAM amount

4 GB

1792 MB

Memory bus width

64 Bit

448 Bit

Memory clock speed

2000 MHz

2016 MHz

Memory bandwidth

16.02 GB/s

112.9 GB/s

Shared memory

-

-

Display Connectors

No outputs

2x DVI, 1x S-Video

DirectX

12 (11_0)

11.1 (10_0)

CUDA

+

1.3

OpenCL

1.2

1.1

OpenGL

4.5

3.3

Shader Model

5.1

4.0

Vulkan

1.1.126

N/A

GameWorks

+

-

GPU Boost

2.0

-

Optimus

+

-