AMD Radeon HD 8770M vs NVIDIA GeForce GTX 850A

VS

AMD Radeon HD 8770M

NVIDIA GeForce GTX 850A

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 8770M 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 8770M 's Advantages

Larger VRAM bandwidth (72.00GB/s vs 28.80GB/s)

NVIDIA GeForce GTX 850A 's Advantages

Released 11 months late

Boost Clock has increased by 13% (936MHz vs 825MHz)

256 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8770M

0.633 TFLOPS

GeForce GTX 850A +89%

1.198 TFLOPS

Radeon HD 8770M

VS

GeForce GTX 850A

Graphics Card

Apr 2013

Release Date

Mar 2014

Solar System

Generation

GeForce 800A

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

775 MHz

Base Clock

902 MHz

825 MHz

Boost Clock

936 MHz

1125 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

128bit

72.00GB/s

Bandwidth

28.80GB/s

Render Config

6

Compute Units

-

384

Shading Units

640

24

TMUs

40

8

ROPs

16

-

16 KB (per CU)

L1 Cache

64 KB (per SMM)

256 KB

L2 Cache

2 MB

-

Theoretical Performance

6.600 GPixel/s

Pixel Rate

14.98 GPixel/s

19.80 GTexel/s

Texture Rate

37.44 GTexel/s

-

633.6 GFLOPS

FP32 (float)

1198 GFLOPS

39.60 GFLOPS

FP64 (double)

37.44 GFLOPS

Board Design

Unknown

TDP

45W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

Mars

GPU Name

GM107

Mars S3 XT (216-0842018)

GPU Variant

N15P-GT-A1

GCN 1.0

Architecture

Maxwell

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

0.95 billion

Transistors

1.87 billion

77 mm²

Die Size

148 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1 (1.2)

OpenCL

3.0

1.2.170

Vulkan

1.3

-

CUDA

5.0

6.5 (5.1)

Shader Model

5.1

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