Home GPU Comparison NVIDIA GeForce GTX 775M Mac Edition vs NVIDIA GeForce GT 640M

NVIDIA GeForce GTX 775M Mac Edition vs NVIDIA 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

NVIDIA 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
NVIDIA GeForce GT 640M 's Advantages
Lower TDP (32W vs 100W)

Score

Benchmark

FP32 (float)
GeForce GTX 775M Mac Edition +346%
2.142 TFLOPS
GeForce GT 640M
0.48 TFLOPS
VS

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

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