NVIDIA GeForce GT 645 OEM vs NVIDIA GeForce GTX 650

VS

NVIDIA GeForce GT 645 OEM

NVIDIA GeForce GTX 650

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM and 1024MB VRAM GeForce GTX 650 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 645 OEM 's Advantages

Larger VRAM bandwidth (91.87GB/s vs 80.00GB/s)

NVIDIA GeForce GTX 650 's Advantages

96 additional rendering cores

Lower TDP (65W vs 102W)

Score

Benchmark

FP32 (float)

GeForce GT 645 OEM +10%

0.894 TFLOPS

GeForce GTX 650

0.812 TFLOPS

GeForce GT 645 OEM

VS

GeForce GTX 650

Graphics Card

Apr 2012

Release Date

Sep 2012

GeForce 600

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

957 MHz

Memory Clock

1250 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

128bit

91.87GB/s

Bandwidth

80.00GB/s

Render Config

-

6

SM Count

-

288

Shading Units

384

48

TMUs

32

24

ROPs

16

-

64 KB (per SM)

L1 Cache

16 KB (per SMX)

384 KB

L2 Cache

256 KB

-

Theoretical Performance

9.312 GPixel/s

Pixel Rate

8.464 GPixel/s

37.25 GTexel/s

Texture Rate

33.86 GTexel/s

-

894.0 GFLOPS

FP32 (float)

812.5 GFLOPS

74.50 GFLOPS

FP64 (double)

33.86 GFLOPS

Board Design

102W

TDP

65W

300 W

Suggested PSU

250 W

2x DVI 1x mini-HDMI 1.3a

Outputs

2x DVI 1x mini-HDMI 1.4a

-

Power Connectors

1x 6-pin

Graphics Processor

GF114

GPU Name

GK107

-

GPU Variant

GK107-450-A2

Fermi 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.95 billion

Transistors

1.27 billion

332 mm²

Die Size

118 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

2.1

CUDA

3.0

5.1

Shader Model

5.1

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