NVIDIA GeForce GT 820M vs NVIDIA GeForce GTX 770M
We compared two Mobile platform GPUs: 1024MB VRAM GeForce GT 820M and 3GB VRAM GeForce GTX 770M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 820M 's Advantages
Released 6 months late
Lower TDP (15W vs 75W)
NVIDIA GeForce GTX 770M 's Advantages
Boost Clock797MHz
More VRAM (3GB vs 1024GB)
Larger VRAM bandwidth (96.19GB/s vs 14.40GB/s)
864 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GT 820M
0.298 TFLOPS
GeForce GTX 770M
+413%
1.53 TFLOPS
Graphics Card
Nov 2013
Release Date
May 2013
GeForce 800M
Generation
GeForce 700M
Mobile
Type
Mobile
PCIe 2.0 x16
Bus Interface
MXM-B (3.0)
Clock Speeds
-
Base Clock
706 MHz
-
Boost Clock
797 MHz
900 MHz
Memory Clock
1002 MHz
Memory
1024MB
Memory Size
3GB
DDR3
Memory Type
GDDR5
64bit
Memory Bus
192bit
14.40GB/s
Bandwidth
96.19GB/s
Render Config
-
-
-
2
SM Count
-
96
Shading Units
960
16
TMUs
80
8
ROPs
24
-
-
-
-
-
-
64 KB (per SM)
L1 Cache
16 KB (per SMX)
128 KB
L2 Cache
384 KB
-
-
-
Theoretical Performance
3.100 GPixel/s
Pixel Rate
15.94 GPixel/s
12.40 GTexel/s
Texture Rate
63.76 GTexel/s
-
-
-
297.6 GFLOPS
FP32 (float)
1.530 TFLOPS
24.80 GFLOPS
FP64 (double)
63.76 GFLOPS
Board Design
15W
TDP
75W
-
-
-
No outputs
Outputs
No outputs
-
Power Connectors
None
Graphics Processor
GF117
GPU Name
GK106
N15V-GM
GPU Variant
N14E-GS-A1
Fermi 2.0
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
0.585 billion
Transistors
2.54 billion
116 mm²
Die Size
221 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
