NVIDIA GeForce GTX 775M Mac Edition vs NVIDIA GeForce GT 640M Mac Edition
We compared two Mobile platform GPUs: 2GB VRAM GeForce GTX 775M Mac Edition and 512MB VRAM GeForce GT 640M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
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
NVIDIA GeForce GT 640M Mac Edition 's Advantages
Lower TDP (32W vs 100W)
Score
Benchmark
FP32 (float)
GeForce GTX 775M Mac Edition
+274%
2.142 TFLOPS
GeForce GT 640M Mac Edition
0.572 TFLOPS
Graphics Card
Nov 2013
Release Date
Feb 2013
GeForce 700M
Generation
GeForce 600M
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
-
-
-
-
-
1250 MHz
Memory Clock
1250 MHz
Memory
2GB
Memory Size
512MB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
64bit
160.0GB/s
Bandwidth
40.00GB/s
Render Config
-
-
-
-
-
-
1344
Shading Units
384
112
TMUs
32
32
ROPs
8
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
16 KB (per SMX)
512 KB
L2 Cache
128 KB
-
-
-
Theoretical Performance
22.32 GPixel/s
Pixel Rate
5.960 GPixel/s
89.26 GTexel/s
Texture Rate
23.84 GTexel/s
-
-
-
2.142 TFLOPS
FP32 (float)
572.2 GFLOPS
89.26 GFLOPS
FP64 (double)
23.84 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
