NVIDIA GeForce 705A vs AMD Radeon HD 7870M

VS

NVIDIA GeForce 705A

AMD Radeon HD 7870M

We compared two Mobile platform GPUs: 1024MB VRAM GeForce 705A 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 705A 's Advantages

Released 2 years and 3 months late

Lower TDP (15W vs 45W)

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

Score

Benchmark

FP32 (float)

GeForce 705A

0.091 TFLOPS

Radeon HD 7870M +1025%

1.024 TFLOPS

GeForce 705A

VS

Radeon HD 7870M

Graphics Card

Jul 2014

Release Date

Apr 2012

GeForce 700A

Generation

London

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

900 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

128bit

14.40GB/s

Bandwidth

64.00GB/s

Render Config

-

Compute Units

10

1

SM Count

-

48

Shading Units

640

8

TMUs

40

4

ROPs

16

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

256 KB

-

Theoretical Performance

950.0 MPixel/s

Pixel Rate

12.80 GPixel/s

3.800 GTexel/s

Texture Rate

32.00 GTexel/s

-

91.20 GFLOPS

FP32 (float)

1024 GFLOPS

7.600 GFLOPS

FP64 (double)

64.00 GFLOPS

Board Design

15W

TDP

45W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GF119

GPU Name

Heathrow

GF119 B1

GPU Variant

Heathrow XT (216-0835033)

Fermi 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.292 billion

Transistors

1.5 billion

79 mm²

Die Size

123 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.1

OpenCL

1.2

N/A

Vulkan

1.2

2.1

CUDA

-

5.1

Shader Model

5.1

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