NVIDIA GeForce GT 640M Mac Edition vs NVIDIA GeForce 620M
We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 640M Mac Edition and 1024MB VRAM GeForce 620M 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 11 months late
Larger VRAM bandwidth (40.00GB/s vs 14.40GB/s)
288 additional rendering cores
NVIDIA GeForce 620M 's Advantages
More VRAM (1024GB vs 512GB)
Lower TDP (15W vs 32W)
Score
Benchmark
FP32 (float)
GeForce GT 640M Mac Edition
+138%
0.572 TFLOPS
GeForce 620M
0.24 TFLOPS
Graphics Card
Feb 2013
Release Date
Mar 2012
GeForce 600M
Generation
GeForce 600M
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
1250 MHz
Memory Clock
900 MHz
Memory
512MB
Memory Size
1024MB
GDDR5
Memory Type
DDR3
64bit
Memory Bus
64bit
40.00GB/s
Bandwidth
14.40GB/s
Render Config
-
-
-
-
SM Count
2
384
Shading Units
96
32
TMUs
16
8
ROPs
8
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
64 KB (per SM)
128 KB
L2 Cache
128 KB
-
-
-
Theoretical Performance
5.960 GPixel/s
Pixel Rate
2.500 GPixel/s
23.84 GTexel/s
Texture Rate
10.00 GTexel/s
-
-
-
572.2 GFLOPS
FP32 (float)
240.0 GFLOPS
23.84 GFLOPS
FP64 (double)
20.00 GFLOPS
Board Design
32W
TDP
15W
-
-
-
No outputs
Outputs
No outputs
-
-
-
Graphics Processor
GK107
GPU Name
GF117
N13P-GS
GPU Variant
N13P-GLP
Kepler
Architecture
Fermi 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.27 billion
Transistors
0.585 billion
118 mm²
Die Size
116 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
1.1
1.1
Vulkan
N/A
3.0
CUDA
2.1
5.1
Shader Model
5.1
