Home GPU Comparison NVIDIA GeForce 800A vs NVIDIA GeForce 820M

NVIDIA GeForce 800A vs NVIDIA GeForce 820M

We compared two Mobile platform GPUs: 1024MB VRAM GeForce 800A and 2GB VRAM GeForce 820M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 800A 's Advantages
Lower TDP (15W vs 45W)
NVIDIA GeForce 820M 's Advantages
Released 1 years late
More VRAM (2GB vs 1GB)
Larger VRAM bandwidth (28.83GB/s vs 14.40GB/s)
336 additional rendering cores

Score

Benchmark

FP32 (float)
GeForce 800A
0.091 TFLOPS
GeForce 820M +583%
0.622 TFLOPS
VS

Graphics Card

Mar 2014
Release Date
Mar 2015
GeForce 800A
Generation
GeForce 800M
Mobile
Type
Mobile
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

-
Base Clock
-
-
Boost Clock
-
900 MHz
Memory Clock
901 MHz

Memory

1024MB
Memory Size
2GB
DDR3
Memory Type
DDR3
64bit
Memory Bus
128bit
14.40GB/s
Bandwidth
28.83GB/s

Render Config

1
SM Count
-
-
Compute Units
-
48
Shading Units
384
8
TMUs
32
4
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
64 KB (per SM)
L1 Cache
16 KB (per SMX)
128 KB
L2 Cache
256 KB

Theoretical Performance

950.0 MPixel/s
Pixel Rate
6.480 GPixel/s
3.800 GTexel/s
Texture Rate
25.92 GTexel/s
-
FP16 (half)
-
91.20 GFLOPS
FP32 (float)
622.1 GFLOPS
7.600 GFLOPS
FP64 (double)
25.92 GFLOPS

Graphics Processor

GF119
GPU Name
GK107
-
GPU Variant
-
Fermi 2.0
Architecture
Kepler
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
0.292 billion
Transistors
1.27 billion
79 mm²
Die Size
118 mm²

Board Design

15W
TDP
45W
-
Suggested PSU
-
No outputs
Outputs
No outputs
-
Power Connectors
-

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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