NVIDIA GeForce GTX 780M Mac Edition vs NVIDIA GeForce GT 820M
We compared two Mobile platform GPUs: 4GB VRAM GeForce GTX 780M Mac Edition and 1024MB VRAM GeForce GT 820M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 780M Mac Edition 's Advantages
Boost Clock797MHz
More VRAM (4GB vs 1024GB)
Larger VRAM bandwidth (160.0GB/s vs 14.40GB/s)
1440 additional rendering cores
NVIDIA GeForce GT 820M 's Advantages
Lower TDP (15W vs 122W)
Score
Benchmark
FP32 (float)
GeForce GTX 780M Mac Edition
+721%
2.448 TFLOPS
GeForce GT 820M
0.298 TFLOPS
Graphics Card
Nov 2013
Release Date
Nov 2013
GeForce 700M
Generation
GeForce 800M
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 2.0 x16
Clock Speeds
771 MHz
Base Clock
-
797 MHz
Boost Clock
-
1250 MHz
Memory Clock
900 MHz
Memory
4GB
Memory Size
1024MB
GDDR5
Memory Type
DDR3
256bit
Memory Bus
64bit
160.0GB/s
Bandwidth
14.40GB/s
Render Config
-
-
-
-
SM Count
2
1536
Shading Units
96
128
TMUs
16
32
ROPs
8
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
64 KB (per SM)
512 KB
L2 Cache
128 KB
-
-
-
Theoretical Performance
25.50 GPixel/s
Pixel Rate
3.100 GPixel/s
102.0 GTexel/s
Texture Rate
12.40 GTexel/s
-
-
-
2.448 TFLOPS
FP32 (float)
297.6 GFLOPS
102.0 GFLOPS
FP64 (double)
24.80 GFLOPS
Board Design
122W
TDP
15W
-
-
-
No outputs
Outputs
No outputs
-
-
-
Graphics Processor
GK104
GPU Name
GF117
N14E-GTX-A2
GPU Variant
N15V-GM
Kepler
Architecture
Fermi 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
3.54 billion
Transistors
0.585 billion
294 mm²
Die Size
116 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
1.1
1.1
Vulkan
N/A
3.0
CUDA
2.1
5.1
Shader Model
5.1
