NVIDIA GeForce GT 640 vs NVIDIA GeForce GTX 670

VS

NVIDIA GeForce GT 640

NVIDIA GeForce GTX 670

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 2GB VRAM GeForce GTX 670 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 170W)

NVIDIA GeForce GTX 670 's Advantages

Boost Clock980MHz

Larger VRAM bandwidth (192.3GB/s vs 28.51GB/s)

960 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640

0.693 TFLOPS

GeForce GTX 670 +280%

2.634 TFLOPS

Blender

GeForce GT 640

32

GeForce GTX 670 +450%

176

OctaneBench

GeForce GT 640

8

GeForce GTX 670 +375%

38

GeForce GT 640

VS

GeForce GTX 670

Graphics Card

Jun 2012

Release Date

May 2012

GeForce 600

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

915 MHz

-

Boost Clock

980 MHz

891 MHz

Memory Clock

1502 MHz

Memory

2GB

Memory Size

2GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

256bit

28.51GB/s

Bandwidth

192.3GB/s

Render Config

-

384

Shading Units

1344

32

TMUs

112

16

ROPs

32

-

16 KB (per SMX)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

27.44 GPixel/s

28.86 GTexel/s

Texture Rate

109.8 GTexel/s

-

692.7 GFLOPS

FP32 (float)

2.634 TFLOPS

28.86 GFLOPS

FP64 (double)

109.8 GFLOPS

Board Design

65W

TDP

170W

250 W

Suggested PSU

450 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

2x 6-pin

Graphics Processor

GK107

GPU Name

GK104

GK107-300-A2

GPU Variant

GK104-325-A2

Kepler

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.27 billion

Transistors

3.54 billion

118 mm²

Die Size

294 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.1

3.0

CUDA

3.0

5.1

Shader Model

5.1

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