GeForce GTX 775M Mac Edition vs GeForce GT 640M
We compared two Mobile platform GPUs: 2GB VRAM GeForce GTX 775M Mac Edition and 2GB VRAM GeForce GT 640M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce GTX 775M Mac Edition 's Advantages
Released 1 years and 8 months late
Larger VRAM bandwidth (160.0GB/s vs 28.80GB/s)
960 additional rendering cores
GeForce GT 640M 's Advantages
Lower TDP (32W vs 100W)
Score
Benchmark
FP32 (float)
GeForce GTX 775M Mac Edition
+346%
2142
GeForce GT 640M
480
Graphics Card
Nov 2013
Release Date
Mar 2012
GeForce 700M
Generation
GeForce 600M
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 3.0 x16
Clock Speeds
1250 MHz
Memory Clock
900 MHz
Memory
2GB
Memory Size
2GB
GDDR5
Memory Type
DDR3
256bit
Memory Bus
128bit
160.0GB/s
Bandwidth
28.80GB/s
Render Config
1344
Shading Units
384
112
TMUs
32
32
ROPs
16
16 KB (per SMX)
L1 Cache
16 KB (per SMX)
512 KB
L2 Cache
256 KB
Theoretical Performance
22.32 GPixel/s
Pixel Rate
5.000 GPixel/s
89.26 GTexel/s
Texture Rate
20.00 GTexel/s
2.142 TFLOPS
FP32 (float)
480.0 GFLOPS
89.26 GFLOPS
FP64 (double)
20.00 GFLOPS
Board Design
100W
TDP
32W
No outputs
Outputs
No outputs
Graphics Processor
GK104
GPU Name
GK107
N13E-GTX-A2
GPU Variant
N13P-GS
Kepler
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
3.54 billion
Transistors
1.27 billion
294 mm²
Die Size
118 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
