NVIDIA GeForce GT 820M vs NVIDIA GeForce GTX 870M

VS

NVIDIA GeForce GT 820M NVIDIA GeForce GTX 870M

We compared two Mobile platform GPUs: 1024MB VRAM GeForce GT 820M and 3GB VRAM GeForce GTX 870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 820M 's Advantages

Lower TDP (15W vs 100W)

NVIDIA GeForce GTX 870M 's Advantages

Boost Clock967MHz

More VRAM (3GB vs 1GB)

Larger VRAM bandwidth (120.0GB/s vs 14.40GB/s)

1248 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 820M

0.298 TFLOPS

GeForce GTX 870M +772%

2.599 TFLOPS

GeForce GT 820M

VS

GeForce GTX 870M

Graphics Card

Nov 2013

Release Date

Mar 2014

GeForce 800M

Generation

GeForce 800M

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

-

Base Clock

941 MHz

-

Boost Clock

967 MHz

900 MHz

Memory Clock

1250 MHz

Memory

1024MB

Memory Size

3GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

192bit

14.40GB/s

Bandwidth

120.0GB/s

Render Config

2

SM Count

-

Compute Units

-

96

Shading Units

1344

16

TMUs

112

8

ROPs

24

-

Tensor Cores

-

RT Cores

-

64 KB (per SM)

L1 Cache

16 KB (per SMX)

128 KB

L2 Cache

384 KB

Theoretical Performance

3.100 GPixel/s

Pixel Rate

27.08 GPixel/s

12.40 GTexel/s

Texture Rate

108.3 GTexel/s

-

FP16 (half)

-

297.6 GFLOPS

FP32 (float)

2.599 TFLOPS

24.80 GFLOPS

FP64 (double)

108.3 GFLOPS

Graphics Processor

GF117

GPU Name

GK104

N15V-GM

GPU Variant

N15E-GT-A2

Fermi 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

0.585 billion

Transistors

3.54 billion

116 mm²

Die Size

294 mm²

Board Design

15W

TDP

100W

-

Suggested PSU

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

2.1

CUDA

3.0

5.1

Shader Model

5.1

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