who's in charge of graphics

i recently purchased a new Toshiba laptop and am curious as to who's chip is in charge Intel or Nvidia

i have updated the physic's and such from Nvidea and also the Intel stuff as updates are avail

below are the spec's

Satellite S55-C5360
System Type Notebook
Processor / Type Core i7
Processor / Manufacturer Intel
Processor / Clock Speed 2.50 GHz
Processor / Number 6500U
Hard Drive / Capacity 1.00 TB
Webcam HD webcam
Input Device Type Keyboard; Touchpad
Header / Model Satellite S55-C5360
Processor / Type Core i7
Processor / Manufacturer Intel
Processor / Clock Speed 2.50 GHz
Processor / Number 6500U
Cache Memory Type L3 Cache
Cache Memory Installed Size 4 MB
Display Diagonal Size 15.6 Inch
LCD Backlight Technology LED Backlight
Display Technology TFT Active Matrix
Max Resolution 1920 x 1080
RAM / Total Installed Size 8.00 GB
RAM / Technology DDR3L SDRAM
Storage Controller Type Serial ATA
Hard Drive / Capacity 1.00 TB
Hard Drive / Spindle Speed 5400 RPM
Graphics Controller NVIDIA GeForce 930M
Video Memory / Installed Size 2 GB
Data Link Protocol Bluetooth; IEEE 802.11 ac; Gigabit Ethernet
Operating System Microsoft Windows 10 Home
Battery Technology Lithium-ion
Battery Capacity 45 WHr
Cell Count 4-cell
Power / Device Type AC Adapters
Power / Provided (W) 65 Watt
Service & Support Type 1 year standard limited warranty
Width 14.96 Inch
Depth 10.20 Inch
Height 0.89 Inch
Weight 4.85 lbs.
Expansion Slots Total (Free) Memory Card Reader
Interfaces HDMI with 4K Ultra HD output capability,Headphone/microphone(combination port),3 USB 3.0 (1 with USB Sleep and Charge),RJ-45 LAN port
Audio Output Built-in harman/kardon stereo speakers. DTS Sound
COO China
EPEAT Level Gold
Energy Star Compliant Yes

all info is greatly appreciated

Normally the Intel chip would be used for typical usage while the NVidia would be used for more demanding needs, such as gaming. This means lower power consumption and lower heat. This is managed by the system.