NVIDIA GeForce GT 745A vs NVIDIA GeForce GTX 870M

VS

NVIDIA GeForce GT 745A

NVIDIA GeForce GTX 870M

We compared two Mobile platform GPUs: 2GB VRAM GeForce GT 745A and 3GB VRAM GeForce GTX 870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 745A 's Advantages

Lower TDP (33W vs 100W)

NVIDIA GeForce GTX 870M 's Advantages

Released 7 months late

Boost Clock has increased by 6% (967MHz vs 915MHz)

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (120.0GB/s vs 28.80GB/s)

960 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 745A

0.703 TFLOPS

GeForce GTX 870M +269%

2.599 TFLOPS

GeForce GT 745A

VS

GeForce GTX 870M

Graphics Card

Aug 2013

Release Date

Mar 2014

GeForce 700A

Generation

GeForce 800M

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

837 MHz

Base Clock

941 MHz

915 MHz

Boost Clock

967 MHz

900 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

3GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

192bit

28.80GB/s

Bandwidth

120.0GB/s

Render Config

-

384

Shading Units

1344

32

TMUs

112

16

ROPs

24

-

16 KB (per SMX)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

384 KB

-

Theoretical Performance

7.320 GPixel/s

Pixel Rate

27.08 GPixel/s

29.28 GTexel/s

Texture Rate

108.3 GTexel/s

-

702.7 GFLOPS

FP32 (float)

2.599 TFLOPS

29.28 GFLOPS

FP64 (double)

108.3 GFLOPS

Board Design

33W

TDP

100W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

GK107

GPU Name

GK104

N14P-LP

GPU Variant

N15E-GT-A2

Kepler

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.27 billion

Transistors

3.54 billion

118 mm²

Die Size

294 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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