NVIDIA GeForce GT 640M Mac Edition vs NVIDIA GeForce GTX 775M Mac Edition
We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 640M Mac Edition and 2GB VRAM GeForce GTX 775M Mac Edition 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
Lower TDP (32W vs 100W)
NVIDIA GeForce GTX 775M Mac Edition 's Advantages
Released 9 months late
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (160.0GB/s vs 40.00GB/s)
960 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GT 640M Mac Edition
0.572 TFLOPS
GeForce GTX 775M Mac Edition
+274%
2.142 TFLOPS
Graphics Card
Feb 2013
Release Date
Nov 2013
GeForce 600M
Generation
GeForce 700M
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
MXM-B (3.0)
Clock Speeds
-
-
-
-
-
-
1250 MHz
Memory Clock
1250 MHz
Memory
512MB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
64bit
Memory Bus
256bit
40.00GB/s
Bandwidth
160.0GB/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
22.32 GPixel/s
23.84 GTexel/s
Texture Rate
89.26 GTexel/s
-
-
-
572.2 GFLOPS
FP32 (float)
2.142 TFLOPS
23.84 GFLOPS
FP64 (double)
89.26 GFLOPS
Board Design
32W
TDP
100W
-
-
-
No outputs
Outputs
No outputs
-
-
-
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
