NVIDIA GeForce GT 640 vs AMD Radeon R7 260X

VS

NVIDIA GeForce GT 640

AMD Radeon R7 260X

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 2GB VRAM Radeon R7 260X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 's Advantages

Lower TDP (65W vs 115W)

AMD Radeon R7 260X 's Advantages

Released 1 years and 4 months late

Larger VRAM bandwidth (104.0GB/s vs 28.51GB/s)

512 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640

0.693 TFLOPS

Radeon R7 260X +184%

1.971 TFLOPS

GeForce GT 640

VS

Radeon R7 260X

Graphics Card

Jun 2012

Release Date

Oct 2013

GeForce 600

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

891 MHz

Memory Clock

1625 MHz

Memory

2GB

Memory Size

2GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

128bit

28.51GB/s

Bandwidth

104.0GB/s

Render Config

-

Compute Units

14

-

384

Shading Units

896

32

TMUs

56

16

ROPs

16

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

17.60 GPixel/s

28.86 GTexel/s

Texture Rate

61.60 GTexel/s

-

692.7 GFLOPS

FP32 (float)

1.971 TFLOPS

28.86 GFLOPS

FP64 (double)

123.2 GFLOPS

Board Design

65W

TDP

115W

250 W

Suggested PSU

300 W

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

Outputs

2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

None

Power Connectors

1x 6-pin

Graphics Processor

GK107

GPU Name

Bonaire

GK107-300-A2

GPU Variant

Bonaire XTX (215-0839097)

Kepler

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.27 billion

Transistors

2.08 billion

118 mm²

Die Size

160 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

3.0

OpenCL

2.0

1.1

Vulkan

1.2

3.0

CUDA

-

5.1

Shader Model

6.3

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