Is RMBS or SIMO cheaper?

On trailing earnings, SIMO is cheaper: RMBS trades at a 69.79 P/E and SIMO at 21.85.

Which has grown faster, RMBS or SIMO?

Over the past five years, RMBS grew revenue faster — RMBS at a 23.51% CAGR versus SIMO at 12.49%.

Does RMBS or SIMO pay a bigger dividend?

SIMO pays a dividend (0.71% yield) while RMBS does not currently pay one.

Is RMBS or SIMO more profitable?

RMBS runs the higher net margin — RMBS at 31.89% versus SIMO at 16.02%.

Which has been the better investment, RMBS or SIMO?

Over the past 10-year, RMBS delivered the higher annualized total return — RMBS at 28.27% versus SIMO at 22.59%. Past performance doesn't predict future results.

Rambus Inc. (RMBS) vs Silicon Motion Technology Corporation (SIMO)

RMBS leads on 9 of 16 compared metrics, though SIMO is the cheaper stock.

A side-by-side comparison of Rambus Inc. and Silicon Motion Technology Corporation across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of June 14, 2026. The ● marks the stronger figure on each row (cheaper multiple, higher margin/return).

Silicon Motion Technology Corporation

$9.38B

$280.49Technology

Total return — RMBS vs SIMO

growth of $100 · last 21y

RMBS +980.0%SIMO +2571.3%SIMO compounded faster

RMBS SIMO

RMBS vs SIMO: by the numbers

•RMBS is the larger company ($15.85B vs $9.38B market cap).
•SIMO trades at the lower earnings multiple (21.85 vs 69.79 P/E).
•RMBS converts more revenue to profit (31.89% vs 16.02% net margin).
•RMBS grew revenue faster over the past five years (23.51% vs 12.49% CAGR).
•SIMO pays a dividend (0.71% yield) while RMBS does not currently pay one.

Which is better, RMBS or SIMO?

Metric tally: RMBS 9 · SIMO 7

It depends on what you're optimizing for:

ValueSIMO(lower P/E)

GrowthRMBS(faster 5Y revenue CAGR)

QualityRMBS(higher ROIC)

Metrics side by side

Valuation

Metric	RMBS	SIMO
P/E ratio	69.79	21.85●
Forward P/E	49.34	32.07●
P/S ratio	22.30	2.66●
P/B ratio	11.54	2.84●
PEG ratio	1.53	0.17●
EV / EBITDA	52.03	12.65●
FCF yield	2.08%●	0.27%

Profitability

Metric	RMBS	SIMO
Gross margin	77.03%●	48.09%
Operating margin	35.89%●	12.77%
Net margin	31.89%●	16.02%
ROE	16.51%	18.76%●
ROIC	15.03%●	9.22%

Dividends

Metric	RMBS	SIMO
Dividend yield	—	0.71%
Payout ratio	—	13.70%

Growth (annualized)

Metric	RMBS	SIMO
Revenue CAGR (5Y)	23.51%●	12.49%
EPS CAGR (5Y)	48.76%●	44.85%
FCF CAGR (5Y)	16.48%●	-42.00%
Total return CAGR (5Y)	49.06%●	36.96%

Frequently asked

Which is better, RMBS or SIMO?: It depends on your goal. value: SIMO (lower P/E); growth: RMBS (faster 5Y revenue CAGR); quality: RMBS (higher ROIC). Across all compared metrics, RMBS leads 9 to 7.
Is RMBS or SIMO cheaper?: On trailing earnings, SIMO is cheaper: RMBS trades at a 69.79 P/E and SIMO at 21.85.
Which has grown faster, RMBS or SIMO?: Over the past five years, RMBS grew revenue faster — RMBS at a 23.51% CAGR versus SIMO at 12.49%.
Does RMBS or SIMO pay a bigger dividend?: SIMO pays a dividend (0.71% yield) while RMBS does not currently pay one.
Is RMBS or SIMO more profitable?: RMBS runs the higher net margin — RMBS at 31.89% versus SIMO at 16.02%.
Which has been the better investment, RMBS or SIMO?: Over the past 10-year, RMBS delivered the higher annualized total return — RMBS at 28.27% versus SIMO at 22.59%. Past performance doesn't predict future results.

Go deeper

Full RMBS analysis Full SIMO analysis Interactive comparison tool

Dig into the metrics

Rambus P/E ratio Silicon Motion Technology P/E ratio Rambus dividend yield Silicon Motion Technology dividend yield Rambus ROE Silicon Motion Technology ROE Rambus operating margin Silicon Motion Technology operating margin Rambus revenue growth Silicon Motion Technology revenue growth Rambus free cash flow Silicon Motion Technology free cash flow

Rambus & Silicon Motion Technology appear in these rankings

Fastest Revenue Growth Stocks Highest Operating Margin Stocks Best 10-Year Total Return Stocks

Figures are sourced from reported fundamentals and the latest end-of-day price. This comparison is informational only and is not investment advice. Past performance does not predict future results. See our methodology. Compiled by TGMCharts Research · data verified June 14, 2026.