Goodwill

The carrying amount of goodwill is as follows:



	January 27, 2013		January 29, 2012
	(In thousands)
Icera	$	271,186	$	271,186
PortalPlayer	104,896		104,896
3dfx	75,326		75,326
Mental Images	59,252		59,252
MediaQ	35,167		35,167
ULi	31,115		31,115
Hybrid Graphics	27,906		27,906
Ageia	19,198		19,198
Other	16,984		16,984
Total goodwill	$	641,030	$	641,030

The amount of goodwill allocated to our GPU and Tegra Processor segments as of both January 27, 2013 and January 29, 2012 was $228.2 million and $412.8 million, respectively. Please refer to Note 17 of these Notes to the Consolidated Financial Statements for further discussion regarding segments.

We allocate goodwill to our reporting units and perform our annual impairment test during the fourth quarter of our fiscal year, or earlier if indicators of potential impairment exist. For the purposes of completing our most recent impairment test, we perform either a qualitative or a quantitative analysis on a reporting unit basis. We completed our most recent annual impairment test during the fourth quarter of fiscal year 2013 and concluded that there was no impairment.

In a qualitative analysis, we evaluate factors including, but not limited to, macro economic conditions, market and industry conditions, competitive environment, operational stability and the overall financial performance of the reporting units including cost factors and budgeted-to-actual revenue results. In a quantitative analysis, we consider both the income method and market method, where applicable, when determining the fair value of reporting units. Our goodwill impairment test uses a weighting primarily towards the income method to estimate the reporting unit's fair value. The income method is based on a discounted future cash flow analysis while the market method is based on financial multiples of comparable companies and applies a control premium.

The estimate of cash flow is based upon, among other things, certain assumptions about expected future operating performance such as revenue growth rates and operating margins used to calculate projected future cash flows, risk-adjusted discount rates, future economic and market conditions. The market method of determining the fair value of our reporting unit requires us to use judgment in the selection of appropriate market comparables.