NVIDIA GeForce GT 640 OEM Rebrand vs AMD Radeon R7 260X

VS

NVIDIA GeForce GT 640 OEM Rebrand

AMD Radeon R7 260X

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand 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 OEM Rebrand 's Advantages

Lower TDP (75W vs 115W)

AMD Radeon R7 260X 's Advantages

Released 1 years and 6 months late

More VRAM (2GB vs 1536GB)

Larger VRAM bandwidth (104.0GB/s vs 38.40GB/s)

752 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

Radeon R7 260X +374%

1.971 TFLOPS

GeForce GT 640 OEM Rebrand

VS

Radeon R7 260X

Graphics Card

Apr 2012

Release Date

Oct 2013

GeForce 600

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

800 MHz

Memory Clock

1625 MHz

Memory

1536MB

Memory Size

2GB

DDR3

Memory Type

GDDR5

192bit

Memory Bus

128bit

38.40GB/s

Bandwidth

104.0GB/s

Render Config

-

Compute Units

14

3

SM Count

-

144

Shading Units

896

24

TMUs

56

24

ROPs

16

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

256 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

17.60 GPixel/s

17.28 GTexel/s

Texture Rate

61.60 GTexel/s

-

414.7 GFLOPS

FP32 (float)

1.971 TFLOPS

34.56 GFLOPS

FP64 (double)

123.2 GFLOPS

Board Design

75W

TDP

115W

250 W

Suggested PSU

300 W

2x DVI 1x mini-HDMI 1.3a

Outputs

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

None

Power Connectors

1x 6-pin

Graphics Processor

GF116

GPU Name

Bonaire

GF116-150-A1

GPU Variant

Bonaire XTX (215-0839097)

Fermi 2.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.17 billion

Transistors

2.08 billion

238 mm²

Die Size

160 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.1

OpenCL

2.0

N/A

Vulkan

1.2

2.1

CUDA

-

5.1

Shader Model

6.3

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