NVIDIA GeForce GT 640 Rev. 2 vs NVIDIA GeForce GTX 650 Ti OEM

VS

NVIDIA GeForce GT 640 Rev. 2 NVIDIA GeForce GTX 650 Ti OEM

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 640 Rev. 2 and 2GB VRAM GeForce GTX 650 Ti OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 Rev. 2 's Advantages

Lower TDP (49W vs 110W)

NVIDIA GeForce GTX 650 Ti OEM 's Advantages

More VRAM (2GB vs 1GB)

Larger VRAM bandwidth (86.40GB/s vs 40.06GB/s)

384 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640 Rev. 2

0.803 TFLOPS

GeForce GTX 650 Ti OEM +77%

1.425 TFLOPS

GeForce GT 640 Rev. 2

VS

GeForce GTX 650 Ti OEM

Graphics Card

May 2013

Release Date

Mar 2013

GeForce 600

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1252 MHz

Memory Clock

1350 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

128bit

40.06GB/s

Bandwidth

86.40GB/s

Render Config

-

SM Count

-

Compute Units

-

384

Shading Units

768

32

TMUs

64

8

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

256 KB

Theoretical Performance

8.368 GPixel/s

Pixel Rate

14.85 GPixel/s

33.47 GTexel/s

Texture Rate

59.39 GTexel/s

-

FP16 (half)

-

803.3 GFLOPS

FP32 (float)

1425 GFLOPS

33.47 GFLOPS

FP64 (double)

59.39 GFLOPS

Graphics Processor

GK208

GPU Name

GK106

GK208-400-A1

GPU Variant

-

Kepler 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.02 billion

Transistors

2.54 billion

87 mm²

Die Size

221 mm²

Board Design

49W

TDP

110W

200 W

Suggested PSU

300 W

1x DVI 1x HDMI 1.4a 1x VGA

Outputs

2x DVI 1x mini-HDMI 1.4a

None

Power Connectors

1x 6-pin

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.1

3.5

CUDA

3.0

5.1

Shader Model

5.1

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