Goodwill

The carrying amount of goodwill is from the following acquisitions:



	January 28, 2018		January 29, 2017
	(In millions)
Icera	$	271	$	271
PortalPlayer	105		105
Mental Images	59		59
3dfx	50		50
MediaQ	35		35
ULi	31		31
Other	67		67
Total goodwill	$	618	$	618

The amount of goodwill allocated to our GPU and Tegra Processor reporting units was $210 million and $408 million, respectively, as of both January 28, 2018 and January 29, 2017. Refer to Note 16 of these Notes to the Consolidated Financial Statements for further discussion regarding segments.

We completed our annual impairment test during the fourth quarter of fiscal year 2018 and concluded that there was no impairment, as the fair value of our reporting units exceeded their carrying values. The fair value was determined by weighing the results from the income approach and the market approach.

These income and market valuation approaches consider a number of factors that include, but are not limited to, prospective financial information, growth rates, residual values, discount rates and comparable multiples from publicly traded companies in our industry and require us to make certain assumptions and estimates regarding industry economic factors and the future profitability of our business. When performing an income approach valuation, we incorporate the use of projected financial information and a discount rate that are developed using market participant based assumptions to our discounted cash flow model. Our estimates of discounted cash flow were based upon, among other things, certain assumptions about our expected future operating performance, such as revenue growth rates, operating margins, risk-adjusted discount rates, and future economic and market conditions. The market method of determining the fair value of our reporting units requires us to use judgment in the selection of appropriate market comparables.