AMD Radeon HD 8970M vs NVIDIA GeForce GTX 850A

VS

AMD Radeon HD 8970M

NVIDIA GeForce GTX 850A

We compared two Mobile platform GPUs: 4GB VRAM Radeon HD 8970M and 2GB VRAM GeForce GTX 850A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8970M 's Advantages

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (153.6GB/s vs 28.80GB/s)

640 additional rendering cores

NVIDIA GeForce GTX 850A 's Advantages

Released 10 months late

Boost Clock has increased by 4% (936MHz vs 900MHz)

Lower TDP (45W vs 100W)

Score

Benchmark

FP32 (float)

Radeon HD 8970M +92%

2.304 TFLOPS

GeForce GTX 850A

1.198 TFLOPS

Radeon HD 8970M

VS

GeForce GTX 850A

Graphics Card

May 2013

Release Date

Mar 2014

Solar System

Generation

GeForce 800A

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

850 MHz

Base Clock

902 MHz

900 MHz

Boost Clock

936 MHz

1200 MHz

Memory Clock

900 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

128bit

153.6GB/s

Bandwidth

28.80GB/s

Render Config

20

Compute Units

-

1280

Shading Units

640

80

TMUs

40

32

ROPs

16

-

16 KB (per CU)

L1 Cache

64 KB (per SMM)

512 KB

L2 Cache

2 MB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

14.98 GPixel/s

72.00 GTexel/s

Texture Rate

37.44 GTexel/s

-

2.304 TFLOPS

FP32 (float)

1198 GFLOPS

144.0 GFLOPS

FP64 (double)

37.44 GFLOPS

Board Design

100W

TDP

45W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Neptune

GPU Name

GM107

Neptune XT (216-0847000)

GPU Variant

N15P-GT-A1

GCN 1.0

Architecture

Maxwell

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

1.87 billion

212 mm²

Die Size

148 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

3.0

1.2

Vulkan

1.3

-

CUDA

5.0

5.1

Shader Model

5.1

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