NVIDIA GeForce GT 640M Mac Edition vs NVIDIA GeForce G105M
We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 640M Mac Edition and 256MB VRAM GeForce G105M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 640M Mac Edition 's Advantages
Released 3 years and 7 months late
More VRAM (512GB vs 256GB)
Larger VRAM bandwidth (40.00GB/s vs 11.20GB/s)
368 additional rendering cores
NVIDIA GeForce G105M 's Advantages
Lower TDP (14W vs 32W)
Score
Benchmark
FP32 (float)
GeForce GT 640M Mac Edition
+1582%
0.572 TFLOPS
GeForce G105M
0.034 TFLOPS
Graphics Card
Feb 2013
Release Date
Jul 2009
GeForce 600M
Generation
GeForce 100M
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
1250 MHz
Memory Clock
700 MHz
Memory
512MB
Memory Size
256MB
GDDR5
Memory Type
GDDR3
64bit
Memory Bus
64bit
40.00GB/s
Bandwidth
11.20GB/s
Render Config
-
-
-
-
SM Count
2
384
Shading Units
16
32
TMUs
8
8
ROPs
4
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
-
128 KB
L2 Cache
32 KB
-
-
-
Theoretical Performance
5.960 GPixel/s
Pixel Rate
2.000 GPixel/s
23.84 GTexel/s
Texture Rate
4.000 GTexel/s
-
-
-
572.2 GFLOPS
FP32 (float)
34.24 GFLOPS
23.84 GFLOPS
FP64 (double)
-
Board Design
32W
TDP
14W
-
-
-
No outputs
Outputs
No outputs
-
-
-
Graphics Processor
GK107
GPU Name
GT218
N13P-GS
GPU Variant
GT218-300-A2
Kepler
Architecture
Tesla 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
1.27 billion
Transistors
0.26 billion
118 mm²
Die Size
57 mm²
Graphics Features
12 (11_0)
DirectX
11.1 (10_1)
4.6
OpenGL
3.3
3.0
OpenCL
1.1
1.1
Vulkan
N/A
3.0
CUDA
1.2
5.1
Shader Model
4.1
