NVIDIA GeForce 820M vs NVIDIA GeForce GT 120M Mac Edition
We compared two Mobile platform GPUs: 2GB VRAM GeForce 820M and 256MB VRAM GeForce GT 120M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce 820M 's Advantages
Released 6 years and 3 months late
More VRAM (2GB vs 256GB)
Larger VRAM bandwidth (28.83GB/s vs 25.34GB/s)
352 additional rendering cores
NVIDIA GeForce GT 120M Mac Edition 's Advantages
Lower TDP (14W vs 45W)
Score
Benchmark
FP32 (float)
GeForce 820M
+677%
0.622 TFLOPS
GeForce GT 120M Mac Edition
0.08 TFLOPS
Graphics Card
Mar 2015
Release Date
Dec 2008
GeForce 800M
Generation
GeForce 100M
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
901 MHz
Memory Clock
792 MHz
Memory
2GB
Memory Size
256MB
DDR3
Memory Type
GDDR3
128bit
Memory Bus
128bit
28.83GB/s
Bandwidth
25.34GB/s
Render Config
-
-
-
-
SM Count
4
384
Shading Units
32
32
TMUs
16
16
ROPs
8
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
-
256 KB
L2 Cache
32 KB
-
-
-
Theoretical Performance
6.480 GPixel/s
Pixel Rate
4.000 GPixel/s
25.92 GTexel/s
Texture Rate
8.000 GTexel/s
-
-
-
622.1 GFLOPS
FP32 (float)
80.00 GFLOPS
25.92 GFLOPS
FP64 (double)
-
Board Design
45W
TDP
14W
-
-
-
No outputs
Outputs
No outputs
-
-
-
Graphics Processor
GK107
GPU Name
G96C
-
-
-
Kepler
Architecture
Tesla
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
1.27 billion
Transistors
0.314 billion
118 mm²
Die Size
121 mm²
Graphics Features
12 (11_0)
DirectX
11.1 (10_0)
4.6
OpenGL
3.3
3.0
OpenCL
1.1
1.1
Vulkan
N/A
3.0
CUDA
1.1
5.1
Shader Model
4.0
