NVIDIA GeForce GT 820M vs NVIDIA GeForce GTX 775M Mac Edition
We compared two Mobile platform GPUs: 1024MB VRAM GeForce GT 820M 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 820M 's Advantages
Lower TDP (15W vs 100W)
NVIDIA GeForce GTX 775M Mac Edition 's Advantages
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (160.0GB/s vs 14.40GB/s)
1248 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GT 820M
0.298 TFLOPS
GeForce GTX 775M Mac Edition
+618%
2.142 TFLOPS
Graphics Card
Nov 2013
Release Date
Nov 2013
GeForce 800M
Generation
GeForce 700M
Mobile
Type
Mobile
PCIe 2.0 x16
Bus Interface
MXM-B (3.0)
Clock Speeds
-
-
-
-
-
-
900 MHz
Memory Clock
1250 MHz
Memory
1024MB
Memory Size
2GB
DDR3
Memory Type
GDDR5
64bit
Memory Bus
256bit
14.40GB/s
Bandwidth
160.0GB/s
Render Config
-
-
-
2
SM Count
-
96
Shading Units
1344
16
TMUs
112
8
ROPs
32
-
-
-
-
-
-
64 KB (per SM)
L1 Cache
16 KB (per SMX)
128 KB
L2 Cache
512 KB
-
-
-
Theoretical Performance
3.100 GPixel/s
Pixel Rate
22.32 GPixel/s
12.40 GTexel/s
Texture Rate
89.26 GTexel/s
-
-
-
297.6 GFLOPS
FP32 (float)
2.142 TFLOPS
24.80 GFLOPS
FP64 (double)
89.26 GFLOPS
Board Design
15W
TDP
100W
-
-
-
No outputs
Outputs
No outputs
-
-
-
Graphics Processor
GF117
GPU Name
GK104
N15V-GM
GPU Variant
N13E-GTX-A2
Fermi 2.0
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
0.585 billion
Transistors
3.54 billion
116 mm²
Die Size
294 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
1.1
OpenCL
3.0
N/A
Vulkan
1.1
2.1
CUDA
3.0
5.1
Shader Model
5.1
