NVIDIA GeForce GTX 745 OEM vs NVIDIA GeForce GT 645 OEM

VS

NVIDIA GeForce GTX 745 OEM NVIDIA GeForce GT 645 OEM

We compared two Desktop platform GPUs: 4GB VRAM GeForce GTX 745 OEM 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 745 OEM 's Advantages

Released 1 years and 10 months late

More VRAM (4GB vs 1GB)

96 additional rendering cores

Lower TDP (55W vs 102W)

NVIDIA GeForce GT 645 OEM 's Advantages

Larger VRAM bandwidth (91.87GB/s vs 28.80GB/s)

Score

Benchmark

FP32 (float)

GeForce GTX 745 OEM

0.793 TFLOPS

GeForce GT 645 OEM +12%

0.894 TFLOPS

GeForce GTX 745 OEM

VS

GeForce GT 645 OEM

Graphics Card

Feb 2014

Release Date

Apr 2012

GeForce 700

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

900 MHz

Memory Clock

957 MHz

Memory

4GB

Memory Size

1024MB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

192bit

28.80GB/s

Bandwidth

91.87GB/s

Render Config

-

SM Count

6

-

Compute Units

-

384

Shading Units

288

24

TMUs

48

16

ROPs

24

-

Tensor Cores

-

RT Cores

-

64 KB (per SMM)

L1 Cache

64 KB (per SM)

2 MB

L2 Cache

384 KB

Theoretical Performance

16.53 GPixel/s

Pixel Rate

9.312 GPixel/s

24.79 GTexel/s

Texture Rate

37.25 GTexel/s

-

FP16 (half)

-

793.3 GFLOPS

FP32 (float)

894.0 GFLOPS

24.79 GFLOPS

FP64 (double)

74.50 GFLOPS

Graphics Processor

GM107

GPU Name

GF114

GM107-220-A2

GPU Variant

-

Maxwell

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.87 billion

Transistors

1.95 billion

148 mm²

Die Size

332 mm²

Board Design

55W

TDP

102W

250 W

Suggested PSU

300 W

1x DVI 1x HDMI 2.0 1x VGA

Outputs

2x DVI 1x mini-HDMI 1.3a

None

Power Connectors

-

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

1.1

1.3

Vulkan

N/A

5.0

CUDA

2.1

5.1

Shader Model

5.1

Related GPU Comparisons

1

NVIDIA GeForce GTX 745 OEM vs NVIDIA GeForce GTX 750

2

NVIDIA GeForce GTX 1660 vs NVIDIA GeForce GTX 745 OEM

3

NVIDIA GeForce GT 730 vs NVIDIA GeForce GTX 745 OEM

4

NVIDIA GeForce GTX 1050 vs NVIDIA GeForce GTX 745 OEM

5

NVIDIA GeForce GT 740 vs NVIDIA GeForce GTX 745 OEM

6

NVIDIA GeForce GTX 745 OEM vs AMD Radeon R7 350 OEM

7

NVIDIA T400 4 GB vs NVIDIA GeForce GTX 745 OEM

8

NVIDIA GeForce GTX 745 OEM vs NVIDIA GeForce 8300 GS

9

NVIDIA GeForce GTX 745 OEM vs NVIDIA GeForce GTX 1060 6 GB GP104

10

NVIDIA GeForce GTX 745 OEM vs ATI Radeon X1650 AGP