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

VS

NVIDIA GeForce GTX 645 OEM

NVIDIA GeForce GTX 650 Ti OEM

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 645 OEM 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 GTX 645 OEM 's Advantages

Lower TDP (65W vs 110W)

NVIDIA GeForce GTX 650 Ti OEM 's Advantages

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (86.40GB/s vs 64.00GB/s)

192 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 645 OEM

0.949 TFLOPS

GeForce GTX 650 Ti OEM +50%

1.425 TFLOPS

GeForce GTX 645 OEM

VS

GeForce GTX 650 Ti OEM

Graphics Card

Apr 2013

Release Date

Mar 2013

GeForce 600

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

1350 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

64.00GB/s

Bandwidth

86.40GB/s

Render Config

-

576

Shading Units

768

48

TMUs

64

16

ROPs

16

-

16 KB (per SMX)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

9.888 GPixel/s

Pixel Rate

14.85 GPixel/s

39.55 GTexel/s

Texture Rate

59.39 GTexel/s

-

949.2 GFLOPS

FP32 (float)

1425 GFLOPS

39.55 GFLOPS

FP64 (double)

59.39 GFLOPS

Board Design

65W

TDP

110W

250 W

Suggested PSU

300 W

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

Outputs

2x DVI 1x mini-HDMI 1.4a

None

Power Connectors

1x 6-pin

Graphics Processor

GK106

GPU Name

GK106

GK106-200-A1

GPU Variant

-

Kepler

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.54 billion

Transistors

2.54 billion

221 mm²

Die Size

221 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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