NVIDIA GeForce GT 640 vs NVIDIA GeForce GT 635 OEM

VS

NVIDIA GeForce GT 640

NVIDIA GeForce GT 635 OEM

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 1024MB VRAM GeForce GT 635 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 's Advantages

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (28.51GB/s vs 14.40GB/s)

NVIDIA GeForce GT 635 OEM 's Advantages

Released 1 years and 4 months late

Lower TDP (35W vs 65W)

Score

Benchmark

FP32 (float)

GeForce GT 640

0.693 TFLOPS

GeForce GT 635 OEM +7%

0.743 TFLOPS

GeForce GT 640

VS

GeForce GT 635 OEM

Graphics Card

Jun 2012

Release Date

Oct 2013

GeForce 600

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

891 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

1024MB

DDR3

Memory Type

DDR3

128bit

Memory Bus

64bit

28.51GB/s

Bandwidth

14.40GB/s

Render Config

-

384

Shading Units

384

32

TMUs

32

16

ROPs

8

-

16 KB (per SMX)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

7.736 GPixel/s

28.86 GTexel/s

Texture Rate

30.94 GTexel/s

-

692.7 GFLOPS

FP32 (float)

742.7 GFLOPS

28.86 GFLOPS

FP64 (double)

30.94 GFLOPS

Board Design

65W

TDP

35W

250 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.4a 1x VGA

None

Power Connectors

None

Graphics Processor

GK107

GPU Name

GK208

GK107-300-A2

GPU Variant

-

Kepler

Architecture

Kepler 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.27 billion

Transistors

1.02 billion

118 mm²

Die Size

87 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

3.5

5.1

Shader Model

5.1

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