PC manufacturers Alien ware and Cyber power have each declared machines which will be sent dead set consumers in October.
Several Steam Machines are out this year, a shot by games publisher Valve to vie with consoles like the Xbox and PlayStation.
Many analysts aren't convinced it poses a threat to those well-established brands.
Steam could be a massively well-liked vice platform and buy the laptop market. In Gregorian calendar month 2013, owner Valve declared it absolutely was to figure with makers to develop Steam Machines within the hope it'd encourage laptop vice within the lounge - a site nigh sewed up by consoles.
"I do not suppose it'll disrupt the established order within the lounge," same Piers Harding-Rolls, head of games analysis at analysts IHS.
"Our read is that it'll be an honest few years before the value purpose and performance equation for Steam Machines suggests that they're going to contend considerably with consoles.
alien ware's machine can value $449 (£300) whereas Cyber power's are priced at $499. However, patrons can got to wait till November, and pay additional, to use Valve's official Steam Machine controller that options 2 hap tic feedback track pads.
The controller has been designed as another to the everyday computer play set-up of keyboard and mouse.
Both machines will be souped-up to supply additional hardware power.
Mr Harding-Rolls questioned the companies' strategy.
"Who goes to shop for an upscale Steam Machine today?
"Steam users United Nations agency square measure power users of Steam and pay tons on computer and wish to attach it to the TV... a decent proportion can have done that already. therefore i believe the chance here is comparatively little."
The controller has been designed as another to the everyday computer play set-up of keyboard and mouse.
Both machines will be souped-up to supply additional hardware power.
Mr Harding-Rolls questioned the companies' strategy.
"Who goes to shop for an upscale Steam Machine today?
"Steam users United Nations agency square measure power users of Steam and pay tons on computer and wish to attach it to the TV... a decent proportion can have done that already. therefore i believe the chance here is comparatively little."
However, games analyst saint Love ll told the BBC that Steam Machines could also be ready to capitalize by iterating additional quickly than the established games consoles that square measure generally not upgraded for many years.
"Steam Machines are not secured down once each six years," he said.
"There are going to be iterations. there will be early adopters - at intervals a year, that may are improved. Those iterations can happen at speed."
While sales of desktop PCs have declined in recent years, laptop diversion continues to be strong.
"If you cross-check disbursement on the laptop platform, it is the biggest platform, by spend, globally. Steam as a platform is in rude health."
"Steam Machines are not secured down once each six years," he said.
"There are going to be iterations. there will be early adopters - at intervals a year, that may are improved. Those iterations can happen at speed."
While sales of desktop PCs have declined in recent years, laptop diversion continues to be strong.
"If you cross-check disbursement on the laptop platform, it is the biggest platform, by spend, globally. Steam as a platform is in rude health."