NVIDIA GeForce 945A vs NVIDIA GeForce GTX 580M

VS

NVIDIA GeForce 945A

NVIDIA GeForce GTX 580M

We compared two Mobile platform GPUs: 1024MB VRAM GeForce 945A and 2GB VRAM GeForce GTX 580M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 945A 's Advantages

Released 3 years and 9 months late

Boost Clock1189MHz

Lower TDP (33W vs 100W)

NVIDIA GeForce GTX 580M 's Advantages

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (96.00GB/s vs 40.10GB/s)

Score

Benchmark

FP32 (float)

GeForce 945A

0.913 TFLOPS

GeForce GTX 580M +4%

0.952 TFLOPS

GeForce 945A

VS

GeForce GTX 580M

Graphics Card

Mar 2015

Release Date

Jun 2011

GeForce 900A

Generation

GeForce 500M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-B (3.0)

Clock Speeds

1006 MHz

Base Clock

-

1189 MHz

Boost Clock

-

1253 MHz

Memory Clock

750 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

256bit

40.10GB/s

Bandwidth

96.00GB/s

Render Config

-

SM Count

8

384

Shading Units

384

24

TMUs

64

8

ROPs

32

-

64 KB (per SMM)

L1 Cache

64 KB (per SM)

1024 KB

L2 Cache

512 KB

-

Theoretical Performance

9.512 GPixel/s

Pixel Rate

9.920 GPixel/s

28.54 GTexel/s

Texture Rate

39.68 GTexel/s

-

913.2 GFLOPS

FP32 (float)

952.3 GFLOPS

28.54 GFLOPS

FP64 (double)

79.36 GFLOPS

Board Design

33W

TDP

100W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

GM108

GPU Name

GF114

-

GPU Variant

N12E-GTX2-A1

Maxwell

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

Unknown

Transistors

1.95 billion

Unknown

Die Size

332 mm²

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

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