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AMD Market Share Drops Below 30% as Intel Wins Back Desktops

Mercury Research says AMD's desktop CPU share fell from 34.9% to 29.9% in one quarter. GPU shortages and a shrinking PC market explain more than Ryzen demand.

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Published 4 min read

AMD market share: concept image of unbranded desktop processors on a tray in blue and red light

AMD market share in desktop processors fell to 29.9% in the third quarter of 2026, down from a record 34.9% in the second quarter, while Intel climbed back to 70.1%, according to new Mercury Research data first reported by PC Gamer on November 13. That five-point swing in a single quarter wipes out AMD's recent gains and leaves it at its lowest desktop level since early 2025, when it sat at around 28%.

The numbers measure shipment share, meaning the slice of x86 chips (the processor family used in Windows PCs) that each company shipped to PC makers and retail channels. They do not track what shoppers bought, which CPUs are inside people's computers, or which chips are faster.

AMD market share: concept image of unbranded desktop processors on a tray in blue and red light

Why Did AMD Market Share Drop So Fast?

Mercury Research itself is not sure. "It's difficult to know the driver of this for sure, but we speculate that due to the lower mobile CPU demand, Intel could allocate more products to the desktop market, which normally sees a significant demand increase in the third quarter, and Intel had been under-supplying this market earlier in 2026," the firm said.

In other words, weak laptop demand freed up Intel chips just as desktop orders usually rise in the July to September quarter, a pattern known as the seasonal bump. "AMD, however, did not appear to have a seasonal increase, which resulted in Intel having a very large sequential and on-year gain in desktop CPU market share," Mercury added. Sequential simply means compared with the previous quarter.

The firm's second explanation points at gaming. Mercury said AMD has "greater exposure to the PC gaming market, which has suffered due to supply constraints of gaming GPUs." Ryzen chips are popular with gamers, so fewer gaming PC builds hurt AMD more than Intel.

Did Intel Actually Sell More Desktop Chips?

Not necessarily, because the market itself shrank. Jon Peddie Research, which tracks a separate dataset, says worldwide PC processor shipments fell to 60.8 million units in Q3 2026, down 3.4% from the previous quarter and 6.5% from a year earlier.

Desktop chip shipments dropped 13% year over year in JPR's count, while notebook chips fell 4%. JPR says the do-it-yourself channel stayed weak after gamers pulled purchases forward into late 2025 to beat expected memory and SSD price increases. A bigger share of a smaller pie is a weaker win than the headline suggests.

The two companies' own results tell a similar story. Intel's Client Computing and Physical AI revenue fell 5% to $8.1 billion in the quarter, and CFO David Zinsner warned of a PC slowdown lasting at least through the first half of 2027, as we covered in our Intel Q3 earnings report.

Where Is AMD Still Gaining Ground?

In servers, the trend runs the other way. Mercury's breakdown, also shared with HotHardware, puts AMD at 35.5% of server CPU shipments, up from 34.5% in Q2 and 27.8% a year ago. Across all x86 chips, AMD's share barely moved, slipping from 34.1% to 33.9%, so the drama is concentrated in desktops.

That fits AMD's priorities. In its record third quarter, data center sales reached $8.55 billion, about 64% of revenue, while gaming revenue fell 40% to $773 million. PC processor sales still rose 7% to $2.95 billion, helped by Ryzen laptop chips.

What Does This Mean for PC Buyers?

For anyone planning a new PC, these numbers are not a performance ranking. PC Gamer, which first published the data, still names AMD's Ryzen 7 9800X3D as its top gaming CPU and even raises the possibility of errant data, while noting Mercury's track record is solid.

The bigger brake on gaming builds is the price of everything around the processor. Graphics cards remain scarce and memory keeps getting more expensive; Nvidia has reportedly shelved a 24GB RTX 5080 because 3GB GDDR7 chips cost about three times as much as 2GB ones.

The next tests come with Mercury's Q4 2026 figures and Intel's Nova Lake desktop chips, which are expected on a new motherboard socket. If AMD bounces back above 30% once GPU supply improves, this quarter will look like a supply blip rather than a turning point.

Desktop x86 CPU shipment share (Mercury Research)Q3 2025Q2 2026Q3 2026
AMD33.6%34.9%29.9%
Intel66.4%65.1%70.1%
AMDIntelCPURyzenPC market