NVIDIA GeForce GTX 650 Ti Boost vs NVIDIA GeForce GT 645 OEM

VS

NVIDIA GeForce GTX 650 Ti Boost NVIDIA GeForce GT 645 OEM

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 650 Ti Boost and 1024MB VRAM GeForce GT 645 OEM 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 1GB)

Larger VRAM bandwidth (144.2GB/s vs 91.87GB/s)

480 additional rendering cores

NVIDIA GeForce GT 645 OEM 's Advantages

Lower TDP (102W vs 134W)

Score

Benchmark

FP32 (float)

GeForce GTX 650 Ti Boost +77%

1.585 TFLOPS

GeForce GT 645 OEM

0.894 TFLOPS

GeForce GTX 650 Ti Boost

VS

GeForce GT 645 OEM

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

957 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

192bit

144.2GB/s

Bandwidth

91.87GB/s

Render Config

-

SM Count

6

-

Compute Units

-

768

Shading Units

288

64

TMUs

48

24

ROPs

24

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

64 KB (per SM)

384 KB

L2 Cache

384 KB

Theoretical Performance

16.51 GPixel/s

Pixel Rate

9.312 GPixel/s

66.05 GTexel/s

Texture Rate

37.25 GTexel/s

-

FP16 (half)

-

1.585 TFLOPS

FP32 (float)

894.0 GFLOPS

66.05 GFLOPS

FP64 (double)

74.50 GFLOPS

Graphics Processor

GK106

GPU Name

GF114

GK106-240-A1

GPU Variant

-

Kepler

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.54 billion

Transistors

1.95 billion

221 mm²

Die Size

332 mm²

Board Design

134W

TDP

102W

300 W

Suggested PSU

300 W

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

Outputs

2x DVI 1x mini-HDMI 1.3a

1x 6-pin

Power Connectors

-

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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