HP said: "The robust and established ecosystem of x86 applications provides the best customer experience at this time and in the immediate future,"
Acer hasn't exactly dropped RT just yet but has publically stated that it won't be "so influential anymore", adding that it's unsure about launching an RT tablet.
Chip maker nVidia has put a large amount of blame on the Windows RT operating system for its poor performance in second quarter of 2013.
nVidia's CEO, Jen-Hsun Huang, said: "coming into the year we had pretty high expectations on one particular platform and there's no sense mainly, but it's a very important platform that also derived from it a lot of design wins.
"And because this particular platform just didn't do as well as we or frankly anybody in the industry had hoped, we don't expect as much return from the investment as we had hoped."
Although Windows RT wasn't specifically mentioned, it's not too hard to work out which 'platform' he was referring to. The Surface RT runs on an nVida Tegra 3 chip as well as other like the Asus Vivo Tab RT.
A second chance for Windows RT
With almost all of Microsoft's partners opting out of the Windows RT world, leaving Dell as the only one really flying the flag, things don't look great for the mobile operating system.
However, a leaked slide and the price cuts to the current Surface tablets suggest that a new-generation is on its way. A Surface RT 2 will give Windows RT a second chance to make it and could well arrive with Windows 8.1 in October. See also: Microsoft to update Surface tablets and introduce price cut.
Although there's time for Windows RT to turn around its fortunes after a seriously bad start, it still seems unlikely with a new version of Google's popular Nexus 7 on the market and a new generation of the iPad and iPad mini due before Christmas too.
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