AMD’s share of desktop CPU shipments fell to 29.9% in the third quarter of 2026, down from 34.9% in the preceding quarter, while Intel recovered to 70.1%, according to Mercury Research figures reported by TechPowerUp, citing PC Gamer.
The five-percentage-point quarterly decline also left AMD below its reported 33.6% desktop share a year earlier. The figures concern processor shipments, rather than revenue or the installed base of PCs.
Intel’s desktop recovery may reflect supply shifts
The cause of the swing remains uncertain. According to TechPowerUp’s account, Mercury Research suggested weaker laptop demand may have allowed Intel to redirect more processors toward desktops after undersupplying that segment earlier in the year.
Desktop shipments typically receive a seasonal boost in the third quarter, the report said, but AMD did not appear to benefit from the same increase. Mercury also noted that desktop volumes had fallen sharply in the second quarter, providing important context for the subsequent change in market share.
That explanation is a possibility, not an established finding. The reported shipment figures do not by themselves demonstrate that consumers switched brands because of processor performance or pricing.
Gaming constraints add pressure
Mercury also pointed to AMD’s greater exposure to PC gaming, which it said had been affected by constraints on gaming graphics-card supply. Such constraints offer another possible explanation for why AMD did not capture the usual seasonal desktop increase.
TechPowerUp also cited AMD’s acknowledgment that demand exceeds its available supply. Neither that observation nor the gaming-market explanation establishes how much each factor contributed to the quarterly decline.
AMD gains server share despite desktop decline
The server market moved in the opposite direction. AMD’s reported server CPU share rose to 35.5%, compared with 34.5% in the preceding quarter, a gain of one percentage point.
Both AMD and Intel also recorded mobile CPU shipment declines of more than 10% during the third quarter, according to the report. Those declines describe shipment volumes, not percentage-point changes in either company’s mobile market share.
The results therefore show a mixed quarter for AMD: a substantial desktop share reversal alongside continued server gains. With Mercury itself uncertain about the desktop swing, the figures leave open whether Intel’s recovery represents a lasting shift or a temporary adjustment in supply.
