AMD Radeon HD 7870M vs NVIDIA GeForce 705A

VS

AMD Radeon HD 7870M

NVIDIA GeForce 705A

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 7870M and 1024MB VRAM GeForce 705A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7870M 's Advantages

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (64.00GB/s vs 14.40GB/s)

592 additional rendering cores

NVIDIA GeForce 705A 's Advantages

Released 2 years and 3 months late

Lower TDP (15W vs 45W)

Score

Benchmark

FP32 (float)

Radeon HD 7870M +1025%

1.024 TFLOPS

GeForce 705A

0.091 TFLOPS

Radeon HD 7870M

VS

GeForce 705A

Graphics Card

Apr 2012

Release Date

Jul 2014

London

Generation

GeForce 700A

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

64bit

64.00GB/s

Bandwidth

14.40GB/s

Render Config

10

Compute Units

-

SM Count

1

640

Shading Units

48

40

TMUs

8

16

ROPs

4

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

128 KB

-

Theoretical Performance

12.80 GPixel/s

Pixel Rate

950.0 MPixel/s

32.00 GTexel/s

Texture Rate

3.800 GTexel/s

-

1024 GFLOPS

FP32 (float)

91.20 GFLOPS

64.00 GFLOPS

FP64 (double)

7.600 GFLOPS

Board Design

45W

TDP

15W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Heathrow

GPU Name

GF119

Heathrow XT (216-0835033)

GPU Variant

GF119 B1

GCN 1.0

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.5 billion

Transistors

0.292 billion

123 mm²

Die Size

79 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

2.1

5.1

Shader Model

5.1

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