NVIDIA GeForce GTX 650 Ti Boost vs NVIDIA GeForce GT 640 OEM Rebrand

VS

NVIDIA GeForce GTX 650 Ti Boost

NVIDIA GeForce GT 640 OEM Rebrand

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 650 Ti Boost and 1536MB VRAM GeForce GT 640 OEM Rebrand to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 650 Ti Boost 's Advantages

Released 11 months late

Boost Clock1032MHz

More VRAM (2GB vs 1536GB)

Larger VRAM bandwidth (144.2GB/s vs 38.40GB/s)

624 additional rendering cores

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Lower TDP (75W vs 134W)

Score

Benchmark

FP32 (float)

GeForce GTX 650 Ti Boost +281%

1.585 TFLOPS

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

GeForce GTX 650 Ti Boost

VS

GeForce GT 640 OEM Rebrand

Graphics Card

Mar 2013

Release Date

Apr 2012

GeForce 600

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

980 MHz

Base Clock

-

1032 MHz

Boost Clock

-

1502 MHz

Memory Clock

800 MHz

Memory

2GB

Memory Size

1536MB

GDDR5

Memory Type

DDR3

192bit

Memory Bus

192bit

144.2GB/s

Bandwidth

38.40GB/s

Render Config

-

SM Count

3

768

Shading Units

144

64

TMUs

24

ROPs

24

-

16 KB (per SMX)

L1 Cache

64 KB (per SM)

384 KB

L2 Cache

384 KB

-

Theoretical Performance

16.51 GPixel/s

Pixel Rate

4.320 GPixel/s

66.05 GTexel/s

Texture Rate

17.28 GTexel/s

-

1.585 TFLOPS

FP32 (float)

414.7 GFLOPS

66.05 GFLOPS

FP64 (double)

34.56 GFLOPS

Board Design

134W

TDP

75W

300 W

Suggested PSU

250 W

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

Outputs

2x DVI 1x mini-HDMI 1.3a

1x 6-pin

Power Connectors

None

Graphics Processor

GK106

GPU Name

GF116

GK106-240-A1

GPU Variant

GF116-150-A1

Kepler

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.54 billion

Transistors

1.17 billion

221 mm²

Die Size

238 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

1.1

Vulkan

N/A

3.0

CUDA

2.1

5.1

Shader Model

5.1

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