NVIDIA GeForce GT 640M Mac Edition vs NVIDIA GeForce GTX 780M Mac Edition
We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 640M Mac Edition and 4GB VRAM GeForce GTX 780M 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 122W)
NVIDIA GeForce GTX 780M Mac Edition 's Advantages
Released 9 months late
Boost Clock797MHz
More VRAM (4GB vs 512GB)
Larger VRAM bandwidth (160.0GB/s vs 40.00GB/s)
1152 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GT 640M Mac Edition
0.572 TFLOPS
GeForce GTX 780M Mac Edition
+327%
2.448 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
-
Base Clock
771 MHz
-
Boost Clock
797 MHz
1250 MHz
Memory Clock
1250 MHz
Memory
512MB
Memory Size
4GB
GDDR5
Memory Type
GDDR5
64bit
Memory Bus
256bit
40.00GB/s
Bandwidth
160.0GB/s
Render Config
-
-
-
-
-
-
384
Shading Units
1536
32
TMUs
128
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
25.50 GPixel/s
23.84 GTexel/s
Texture Rate
102.0 GTexel/s
-
-
-
572.2 GFLOPS
FP32 (float)
2.448 TFLOPS
23.84 GFLOPS
FP64 (double)
102.0 GFLOPS
Board Design
32W
TDP
122W
-
-
-
No outputs
Outputs
No outputs
-
-
-
Graphics Processor
GK107
GPU Name
GK104
N13P-GS
GPU Variant
N14E-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
