NVIDIA GeForce 945A vs AMD Radeon HD 7870M

VS

NVIDIA GeForce 945A

AMD Radeon HD 7870M

We compared two Mobile platform GPUs: 1024MB VRAM GeForce 945A and 2GB VRAM Radeon HD 7870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 945A 's Advantages

Released 2 years and 11 months late

Boost Clock1189MHz

Lower TDP (33W vs 45W)

AMD Radeon HD 7870M 's Advantages

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (64.00GB/s vs 40.10GB/s)

256 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 945A

0.913 TFLOPS

Radeon HD 7870M +12%

1.024 TFLOPS

GeForce 945A

VS

Radeon HD 7870M

Graphics Card

Mar 2015

Release Date

Apr 2012

GeForce 900A

Generation

London

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1006 MHz

Base Clock

-

1189 MHz

Boost Clock

-

1253 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

128bit

40.10GB/s

Bandwidth

64.00GB/s

Render Config

-

Compute Units

10

-

384

Shading Units

640

24

TMUs

40

8

ROPs

16

-

64 KB (per SMM)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

256 KB

-

Theoretical Performance

9.512 GPixel/s

Pixel Rate

12.80 GPixel/s

28.54 GTexel/s

Texture Rate

32.00 GTexel/s

-

913.2 GFLOPS

FP32 (float)

1024 GFLOPS

28.54 GFLOPS

FP64 (double)

64.00 GFLOPS

Board Design

33W

TDP

45W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GM108

GPU Name

Heathrow

-

GPU Variant

Heathrow XT (216-0835033)

Maxwell

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

Unknown

Transistors

1.5 billion

Unknown

Die Size

123 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

3.0

OpenCL

1.2

1.3

Vulkan

1.2

5.0

CUDA

-

5.1

Shader Model

5.1

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