NVIDIA GeForce 820M vs NVIDIA GeForce GT 635M
We compared two Mobile platform GPUs: 2GB VRAM GeForce 820M and 1024MB VRAM GeForce GT 635M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce 820M 's Advantages
Released 3 years late
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (28.83GB/s vs 28.80GB/s)
288 additional rendering cores
NVIDIA GeForce GT 635M 's Advantages
Lower TDP (35W vs 45W)
Score
Benchmark
FP32 (float)
GeForce 820M
+145%
0.622 TFLOPS
GeForce GT 635M
0.253 TFLOPS
3DMark Time Spy
GeForce 820M
+12%
192
GeForce GT 635M
170
Graphics Card
Mar 2015
Release Date
Mar 2012
GeForce 800M
Generation
GeForce 600M
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
901 MHz
Memory Clock
900 MHz
Memory
2GB
Memory Size
1024MB
DDR3
Memory Type
DDR3
128bit
Memory Bus
128bit
28.83GB/s
Bandwidth
28.80GB/s
Render Config
-
-
-
-
SM Count
2
384
Shading Units
96
32
TMUs
16
16
ROPs
4
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
64 KB (per SM)
256 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
6.480 GPixel/s
Pixel Rate
2.640 GPixel/s
25.92 GTexel/s
Texture Rate
10.56 GTexel/s
-
-
-
622.1 GFLOPS
FP32 (float)
253.4 GFLOPS
25.92 GFLOPS
FP64 (double)
21.12 GFLOPS
Board Design
45W
TDP
35W
-
-
-
No outputs
Outputs
No outputs
-
-
-
Graphics Processor
GK107
GPU Name
GF108
-
GPU Variant
N12E-GE-A1
Kepler
Architecture
Fermi
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
1.27 billion
Transistors
0.585 billion
118 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
