NVIDIA GeForce GT 120M Mac Edition vs NVIDIA GeForce 820A
We compared two Mobile platform GPUs: 256MB VRAM GeForce GT 120M Mac Edition and 1024MB VRAM GeForce 820A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 120M Mac Edition 's Advantages
Larger VRAM bandwidth (25.34GB/s vs 14.40GB/s)
Lower TDP (14W vs 15W)
NVIDIA GeForce 820A 's Advantages
Released 5 years and 3 months late
More VRAM (1024GB vs 256GB)
64 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GT 120M Mac Edition
0.08 TFLOPS
GeForce 820A
+272%
0.298 TFLOPS
Graphics Card
Dec 2008
Release Date
Mar 2014
GeForce 100M
Generation
GeForce 800A
Mobile
Type
Mobile
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
792 MHz
Memory Clock
900 MHz
Memory
256MB
Memory Size
1024MB
GDDR3
Memory Type
DDR3
128bit
Memory Bus
64bit
25.34GB/s
Bandwidth
14.40GB/s
Render Config
-
-
-
4
SM Count
2
32
Shading Units
96
16
TMUs
16
8
ROPs
8
-
-
-
-
-
-
-
L1 Cache
64 KB (per SM)
32 KB
L2 Cache
128 KB
-
-
-
Theoretical Performance
4.000 GPixel/s
Pixel Rate
3.100 GPixel/s
8.000 GTexel/s
Texture Rate
12.40 GTexel/s
-
-
-
80.00 GFLOPS
FP32 (float)
297.6 GFLOPS
-
FP64 (double)
24.80 GFLOPS
Board Design
14W
TDP
15W
-
-
-
No outputs
Outputs
No outputs
-
-
-
Graphics Processor
G96C
GPU Name
GF117
-
GPU Variant
N15V-GM
Tesla
Architecture
Fermi 2.0
TSMC
Foundry
TSMC
55 nm
Process Size
28 nm
0.314 billion
Transistors
0.585 billion
121 mm²
Die Size
116 mm²
Graphics Features
11.1 (10_0)
DirectX
12 (11_0)
3.3
OpenGL
4.6
1.1
OpenCL
1.1
N/A
Vulkan
N/A
1.1
CUDA
2.1
4.0
Shader Model
5.1
