NVIDIA GeForce GT 820M vs NVIDIA GeForce GTX 850M
We compared two Mobile platform GPUs: 1024MB VRAM GeForce GT 820M and 2GB VRAM GeForce GTX 850M 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 45W)
NVIDIA GeForce GTX 850M 's Advantages
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (32.03GB/s vs 14.40GB/s)
544 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GT 820M
0.298 TFLOPS
GeForce GTX 850M
+287%
1.155 TFLOPS
Graphics Card
Nov 2013
Release Date
Mar 2014
GeForce 800M
Generation
GeForce 800M
Mobile
Type
Mobile
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
-
-
-
-
-
900 MHz
Memory Clock
1001 MHz
Memory
1024MB
Memory Size
2GB
DDR3
Memory Type
DDR3
64bit
Memory Bus
128bit
14.40GB/s
Bandwidth
32.03GB/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
3.100 GPixel/s
Pixel Rate
14.43 GPixel/s
12.40 GTexel/s
Texture Rate
36.08 GTexel/s
-
-
-
297.6 GFLOPS
FP32 (float)
1155 GFLOPS
24.80 GFLOPS
FP64 (double)
36.08 GFLOPS
Board Design
15W
TDP
45W
-
-
-
No outputs
Outputs
No outputs
-
-
-
Graphics Processor
GF117
GPU Name
GM107
N15V-GM
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
