NVIDIA GeForce GT 755M Mac Edition vs NVIDIA GeForce GT 645M

VS

NVIDIA GeForce GT 755M Mac Edition

NVIDIA GeForce GT 645M

We compared two Mobile platform GPUs: 1024MB VRAM GeForce GT 755M Mac Edition and 2GB VRAM GeForce GT 645M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 755M Mac Edition 's Advantages

Released 1 years and 1 months late

Larger VRAM bandwidth (80.00GB/s vs 28.80GB/s)

NVIDIA GeForce GT 645M 's Advantages

More VRAM (2GB vs 1024GB)

Lower TDP (32W vs 50W)

Score

Benchmark

FP32 (float)

GeForce GT 755M Mac Edition +53%

0.833 TFLOPS

GeForce GT 645M

0.544 TFLOPS

GeForce GT 755M Mac Edition

VS

GeForce GT 645M

Graphics Card

Nov 2013

Release Date

Oct 2012

GeForce 700M

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

128bit

80.00GB/s

Bandwidth

28.80GB/s

Render Config

-

384

Shading Units

384

32

TMUs

32

16

ROPs

16

-

16 KB (per SMX)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

8.680 GPixel/s

Pixel Rate

5.672 GPixel/s

34.72 GTexel/s

Texture Rate

22.69 GTexel/s

-

833.3 GFLOPS

FP32 (float)

544.5 GFLOPS

34.72 GFLOPS

FP64 (double)

22.69 GFLOPS

Board Design

50W

TDP

32W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GK107

GPU Name

GK107

GT 755M

GPU Variant

N13P-GS

Kepler

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.27 billion

Transistors

1.27 billion

118 mm²

Die Size

118 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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