NVIDIA GeForce 620M vs NVIDIA GeForce GTX 850A

VS

NVIDIA GeForce 620M

NVIDIA GeForce GTX 850A

We compared two Mobile platform GPUs: 1024MB VRAM GeForce 620M and 2GB VRAM GeForce GTX 850A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 620M 's Advantages

Lower TDP (15W vs 45W)

NVIDIA GeForce GTX 850A 's Advantages

Released 2 years late

Boost Clock936MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (28.80GB/s vs 14.40GB/s)

544 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 620M

0.24 TFLOPS

GeForce GTX 850A +399%

1.198 TFLOPS

GeForce 620M

VS

GeForce GTX 850A

Graphics Card

Mar 2012

Release Date

Mar 2014

GeForce 600M

Generation

GeForce 800A

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

902 MHz

-

Boost Clock

936 MHz

900 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

DDR3

64bit

Memory Bus

128bit

14.40GB/s

Bandwidth

28.80GB/s

Render Config

-

2

SM Count

-

96

Shading Units

640

16

TMUs

40

8

ROPs

16

-

64 KB (per SM)

L1 Cache

64 KB (per SMM)

128 KB

L2 Cache

2 MB

-

Theoretical Performance

2.500 GPixel/s

Pixel Rate

14.98 GPixel/s

10.00 GTexel/s

Texture Rate

37.44 GTexel/s

-

240.0 GFLOPS

FP32 (float)

1198 GFLOPS

20.00 GFLOPS

FP64 (double)

37.44 GFLOPS

Board Design

15W

TDP

45W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GF117

GPU Name

GM107

N13P-GLP

GPU Variant

N15P-GT-A1

Fermi 2.0

Architecture

Maxwell

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

0.585 billion

Transistors

1.87 billion

116 mm²

Die Size

148 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.3

2.1

CUDA

5.0

5.1

Shader Model

5.1

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