Investors interested in Electronics - Semiconductors stocks are likely familiar with Silicon Motion (SIMO) and Synaptics (SYNA). But which of these two stocks presents investors with the better value opportunity right now? Let's take a closer look.We have found that the best way to discover great value opportunities is to pair a strong Zacks Rank with a great grade in the Value category of our Style Scores system. The proven Zacks Rank emphasizes companies with positive estimate revision trends, and our Style Scores highlight stocks with specific traits.Silicon Motion and Synaptics are sporting Zacks Ranks of #2 (Buy) and #3 (Hold), respectively, right now. This means that SIMO's earnings estimate revision activity has been more impressive, so investors should feel comfortable with its improving analyst outlook. But this is just one factor that value investors are interested in.Value investors analyze a variety of traditional, tried-and-true metrics to help find companies that they believe are undervalued at their current share price levels.Our Value category highlights undervalued companies by looking at a variety of key metrics, including the popular P/E ratio, as well as the P/S ratio, earnings yield, cash flow per share, and a variety of other fundamentals that have been used by value investors for years.SIMO currently has a forward P/E ratio of 11.22, while SYNA has a forward P/E of 17.54. We also note that SIMO has a PEG ratio of 1.40. This figure is similar to the commonly-used P/E ratio, with the PEG ratio also factoring in a company's expected earnings growth rate. SYNA currently has a PEG ratio of 1.75.Another notable valuation metric for SIMO is its P/B ratio of 3.58. The P/B ratio is used to compare a stock's market value with its book value, which is defined as total assets minus total liabilities. For comparison, SYNA has a P/B of 6.35.These metrics, and several others, help SIMO earn a Value grade of B, while SYNA has been given a Value grade of C.SIMO is currently sporting an improving earnings outlook, which makes it stick out in our Zacks Rank model. And, based on the above valuation metrics, we feel that SIMO is likely the superior value option right now. Time to Invest in Legal Marijuana If you’re looking for big gains, there couldn’t be a better time to get in on a young industry primed to skyrocket from $17.7 billion back in 2019 to an expected $73.6 billion by 2027. After a clean sweep of 6 election referendums in 5 states, pot is now legal in 36 states plus D.C. Federal legalization is expected soon and that could be a still greater bonanza for investors. Even before the latest wave of legalization, Zacks Investment Research has recommended pot stocks that have shot up as high as +285.9%. You’re invited to check out Zacks’ Marijuana Moneymakers: An Investor’s Guide. It features a timely Watch List of pot stocks and ETFs with exceptional growth potential.Today, Download Marijuana Moneymakers FREE >>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Silicon Motion Technology Corporation (SIMO): Free Stock Analysis Report Synaptics Incorporated (SYNA): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research