NVIDIA GeForce GT 820M vs NVIDIA GeForce GT 555M
We compared two Mobile platform GPUs: 1024MB VRAM GeForce GT 820M and 2GB VRAM GeForce GT 555M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 820M 's Advantages
Released 1 years and 8 months late
Lower TDP (15W vs 35W)
NVIDIA GeForce GT 555M 's Advantages
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (28.80GB/s vs 14.40GB/s)
48 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GT 820M
0.298 TFLOPS
GeForce GT 555M
+30%
0.389 TFLOPS
Graphics Card
Nov 2013
Release Date
Mar 2012
GeForce 800M
Generation
GeForce 500M
Mobile
Type
Mobile
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
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
2
96
Shading Units
144
16
TMUs
24
8
ROPs
16
-
-
-
-
-
-
64 KB (per SM)
L1 Cache
64 KB (per SM)
128 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
3.100 GPixel/s
Pixel Rate
2.700 GPixel/s
12.40 GTexel/s
Texture Rate
16.20 GTexel/s
-
-
-
297.6 GFLOPS
FP32 (float)
388.8 GFLOPS
24.80 GFLOPS
FP64 (double)
32.40 GFLOPS
Board Design
15W
TDP
35W
-
-
-
No outputs
Outputs
No outputs
-
-
-
Graphics Processor
GF117
GPU Name
GF116
N15V-GM
GPU Variant
N12E-GE2-A1
Fermi 2.0
Architecture
Fermi 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
0.585 billion
Transistors
1.17 billion
116 mm²
Die Size
238 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
1.1
OpenCL
1.1
N/A
Vulkan
N/A
2.1
CUDA
2.1
5.1
Shader Model
5.1
