NVIDIA GeForce GT 120M Mac Edition vs NVIDIA GeForce GT 645M
We compared two Mobile platform GPUs: 256MB VRAM GeForce GT 120M Mac Edition and 2GB VRAM GeForce GT 645M 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
Lower TDP (14W vs 32W)
NVIDIA GeForce GT 645M 's Advantages
Released 3 years and 10 months late
More VRAM (2GB vs 256GB)
Larger VRAM bandwidth (28.80GB/s vs 25.34GB/s)
352 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GT 120M Mac Edition
0.08 TFLOPS
GeForce GT 645M
+580%
0.544 TFLOPS
Graphics Card
Dec 2008
Release Date
Oct 2012
GeForce 100M
Generation
GeForce 600M
Mobile
Type
Mobile
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
-
-
-
-
-
792 MHz
Memory Clock
900 MHz
Memory
256MB
Memory Size
2GB
GDDR3
Memory Type
DDR3
128bit
Memory Bus
128bit
25.34GB/s
Bandwidth
28.80GB/s
Render Config
-
-
-
4
SM Count
-
32
Shading Units
384
16
TMUs
32
8
ROPs
16
-
-
-
-
-
-
-
L1 Cache
16 KB (per SMX)
32 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
4.000 GPixel/s
Pixel Rate
5.672 GPixel/s
8.000 GTexel/s
Texture Rate
22.69 GTexel/s
-
-
-
80.00 GFLOPS
FP32 (float)
544.5 GFLOPS
-
FP64 (double)
22.69 GFLOPS
Board Design
14W
TDP
32W
-
-
-
No outputs
Outputs
No outputs
-
-
-
Graphics Processor
G96C
GPU Name
GK107
-
GPU Variant
N13P-GS
Tesla
Architecture
Kepler
TSMC
Foundry
TSMC
55 nm
Process Size
28 nm
0.314 billion
Transistors
1.27 billion
121 mm²
Die Size
118 mm²
Graphics Features
11.1 (10_0)
DirectX
12 (11_0)
3.3
OpenGL
4.6
1.1
OpenCL
3.0
N/A
Vulkan
1.1
1.1
CUDA
3.0
4.0
Shader Model
5.1
