Microsoft Corp said on Tuesday the patches released to guard against Meltdown and Spectre security threats slowed down some personal computers and servers, with systems running on older Intel Corp processors seeing a noticeable decrease in performance.
The security updates also froze some computers running AMD chipsets, Microsoft said in a blog post, citing customer complaints, reports Reuters.
Shares in Intel, which reiterated on Tuesday that it saw no sign of significant slowdown in computers, fell 1.4 per cent, while those of AMD fell nearly 4 per cent.
AMD shares have gained nearly 20 per cent in the last week as investors speculated that the chipmaker could wrest market share from Intel, whose chips were most exposed to the security flaws.
"We (and others in the industry) had learned of this vulnerability under nondisclosure agreement several months ago and immediately began developing engineering mitigations and updating our cloud infrastructure," Microsoft executive Terry Myerson wrote in a blog post.
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