NVIDIA GeForce GTX 980MX vs NVIDIA GeForce GT 645M
We compared two Mobile platform GPUs: 8GB VRAM GeForce GTX 980MX and 2GB VRAM GeForce GT 645M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 980MX 's Advantages
Released 3 years and 8 months late
Boost Clock1178MHz
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (192.0GB/s vs 28.80GB/s)
1280 additional rendering cores
NVIDIA GeForce GT 645M 's Advantages
Lower TDP (32W vs 148W)
Score
Benchmark
FP32 (float)
GeForce GTX 980MX
+620%
3.92 TFLOPS
GeForce GT 645M
0.544 TFLOPS
Graphics Card
Jun 2016
Release Date
Oct 2012
GeForce 900M
Generation
GeForce 600M
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
1050 MHz
Base Clock
-
1178 MHz
Boost Clock
-
1500 MHz
Memory Clock
900 MHz
Memory
8GB
Memory Size
2GB
GDDR5
Memory Type
DDR3
256bit
Memory Bus
128bit
192.0GB/s
Bandwidth
28.80GB/s
Render Config
-
-
-
-
-
-
1664
Shading Units
384
104
TMUs
32
64
ROPs
16
-
-
-
-
-
-
48 KB (per SMM)
L1 Cache
16 KB (per SMX)
2 MB
L2 Cache
256 KB
-
-
-
Theoretical Performance
75.39 GPixel/s
Pixel Rate
5.672 GPixel/s
122.5 GTexel/s
Texture Rate
22.69 GTexel/s
-
-
-
3.920 TFLOPS
FP32 (float)
544.5 GFLOPS
122.5 GFLOPS
FP64 (double)
22.69 GFLOPS
Board Design
148W
TDP
32W
-
-
-
No outputs
Outputs
No outputs
None
Power Connectors
-
Graphics Processor
GM204
GPU Name
GK107
N16E-GXX-A1
GPU Variant
N13P-GS
Maxwell 2.0
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
5.2 billion
Transistors
1.27 billion
398 mm²
Die Size
118 mm²
Graphics Features
12 (12_1)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.3
Vulkan
1.1
5.2
CUDA
3.0
6.4
Shader Model
5.1
