Microsoft says Xbox Series X|S is their fastest-selling console, news confirmed in the company’s fourth quarter earnings call.

The news comes from Microsoft CEO Satya Nadella in a new transcript (via VGC), where Microsoft says Xbox Series X|S is their fastest-selling console.

“The Xbox Series S and X are our fastest selling consoles ever with more consoles sold life-to-date than any previous generation,” Nadella said.

Nadella also boasted how well their Xbox Game Pass subscription platform is doing, saying subscribers play “approximately 40 percent more games and spend 50 percent more than non-members.” This comes along the admission that Xbox content and services revenue was down 4% but hardware revenue was up 172%, by demand for the new consoles.

Research firm Niko Partners also noted their estimate of how many Xbox Series X|S consoles were actually sold to date is somewhere around at least 6.5 million units. In the same time frame the Xbox One hit only 5.7 million units, and the Xbox 360 was only at 5 million units.

Furthermore, CFO Amy Hood said global supply constraints have slowed growth and that the company expects “console growth will again be constrained by supply” during the current quarter, which ends on September 30.

Hood added that in gaming they expect “revenue growth in the low double-digits. Console growth will again be constrained by supply. And on a strong prior year comparable, Xbox content and services revenue should grow low single digits.”

In comparison, Sony announced earlier today that they’ve sold over 10 million PlayStation 5 consoles, breaking their own records as well. Despite the new sales records for both consoles, it has been extremely difficult for consumers to buy them – leading many to think most are in the hands of scalpers.