NVIDIA GeForce GT 640M Mac Edition vs NVIDIA GeForce GTX 680M
We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 640M Mac Edition and 4GB VRAM GeForce GTX 680M 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 8 months late
Lower TDP (32W vs 100W)
NVIDIA GeForce GTX 680M 's Advantages
Boost Clock758MHz
More VRAM (4GB vs 512GB)
Larger VRAM bandwidth (115.2GB/s vs 40.00GB/s)
960 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GT 640M Mac Edition
0.572 TFLOPS
GeForce GTX 680M
+256%
2.038 TFLOPS
Graphics Card
Feb 2013
Release Date
Jun 2012
GeForce 600M
Generation
GeForce 600M
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
MXM-B (3.0)
Clock Speeds
-
Base Clock
719 MHz
-
Boost Clock
758 MHz
1250 MHz
Memory Clock
900 MHz
Memory
512MB
Memory Size
4GB
GDDR5
Memory Type
GDDR5
64bit
Memory Bus
256bit
40.00GB/s
Bandwidth
115.2GB/s
Render Config
-
-
-
-
-
-
384
Shading Units
1344
32
TMUs
112
8
ROPs
32
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
16 KB (per SMX)
128 KB
L2 Cache
512 KB
-
-
-
Theoretical Performance
5.960 GPixel/s
Pixel Rate
21.22 GPixel/s
23.84 GTexel/s
Texture Rate
84.90 GTexel/s
-
-
-
572.2 GFLOPS
FP32 (float)
2.038 TFLOPS
23.84 GFLOPS
FP64 (double)
84.90 GFLOPS
Board Design
32W
TDP
100W
-
-
-
No outputs
Outputs
No outputs
-
Power Connectors
None
Graphics Processor
GK107
GPU Name
GK104
N13P-GS
GPU Variant
N13E-GTX-A2
Kepler
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.27 billion
Transistors
3.54 billion
118 mm²
Die Size
294 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.1
Vulkan
1.1
3.0
CUDA
3.0
5.1
Shader Model
5.1
