Tobii Tracker 4C

Most Tobii trackers have an "EyeChip" that acts as a dedicated processor lessening the load on your CPU and allowing for lower spec CPU's to run the hardware and most also has head tracking that is not powered by the EyeChip and puts more load on your CPU.

The 4C comes with 2 mounting brackets that you stick to the bottom of your monitor and the tracker just fits into it magnetically.

Specs

Size	17 x 15 x 335 mm (0.66 x 0.6 x 13.1 in)
Max Screen Size	27 inches with 16:9 Aspect Ratio (30 inches with 21:9 Aspect Ratio)
Operating Distance	20 – 37″ / 50 – 95 cm
Track Box Dimensions	16 x 12" / 40 x 30 cm at 29.5" / 75 cm
Tobii EyeChip	Yes
Connectivity	80 cm (All tobiigaming.com orders come with a 1m extension cable)
USB Cable Length	80 cm
Head Tracking	Yes (not powered by EyeChip)
OS Compatibility	Windows 7, 8.1 and 10 (64-bit only)
CPU Load	1% (Core i7)*
Power Consumption	2.0 Watt**
USB Data Transfer Rate	100KB/s
Illuminators	Near Infrared (NIR 850nm) Only
Frequency	90 Hz
Tracking Population	97%
System Recommendations	2.0 GHz, Intel i5 or i7, 8 GB RAM

GP3 HD Eye Tracker

GP3 from gazepoint is another device we use and is pretty heavy on the cpu as it doesn't have an eyechip like the tobii devices to lighten the load on the cpu. As I've learned it has system requirements that need to be met to perform at a decent quality. Gazepoint is a fairly small company in regards to the eyetracker industry but the quality of their products are still able to compare with the big names in the industry.

System Requirements

Intel Core i7 or faster, 8 GB RAM, Windows 7, 8.1 or 10, USB3.0 port; Mac and Linux are not supported at this time.

Specs

• 0.5 – 1.0 degree of visual angle accuracy
• 60Hz or 150Hz sampling rate
• 5- or 9-point calibration
• Easy-to-use
• Open standard API
• 35cm (horizontal) x 22cm (vertical) movement
• ±15 cm range of depth movement
• Ultra portable – 320 x 45 x 47 mm (155g)
• Compatible with 24″ displays or smaller