Microsoft have explained the delay over releasing the Xbox Scorpio so late after the PS4 Pro
Both will be rival high-end consoles but not until the new Microsoft project is released near the end of 2017.
Spencer has now revealed that the hardware available and the price point were both defining factors behind the delay of the Xbox Scorpio.
"We thought 4K TVs would get to scale in the middle of this generation," he told Gamasutra.
"So we designed a console for 2016, and a console for 2017. We were kind of working on both plans simultaneously. And at some point, we [had] to–let's just call it greenlight.
“For what we would do in 2016 … [I said] I think we need to do more than what the silicon is that's available in 2016 at a price point that a console customer would want to pay."
"We stopped that  effort and said, 'Okay, we're going to put all of our weight and execution capability of the hardware team behind delivering a higher-powered console in 2017 that's completely geared towards 4K.'"
Microsoft Xbox Scorpio image gallery Mon, April 3, 2017
Microsoft's high-spec Project Scorpio has a holiday 2017 release date.
Play slideshow GETTY 1 of 7
Xbox Project Scorpio
Spencer also commented on the PS4 Pro and how it’s a great console by 2016 standards.
“Sometimes I get in trouble when I talk about Sony too much, but, the choice they made on PS4 Pro, I totally get that choice, from their perspective and what they wanted to go do,” he added.
“I've said it publicly and I've said it privately, I think they've built a good 2016 PS4 Pro. With the silicon that was available, they picked the parts that made sense to go and put together a console in 2016."
Get Quotes on Home Insurance
"But the point on not wanting framerate to drop … if the developers want to push resolution, to say to the player, 'Here, you bought this higher-end console, let me show you higher-end resolution,' you don't want the framerate to drop. And that was something we didn't think we could deliver with the silicon that was available in 2016.
"So some of it was time, as certain things come down in price–some of them not as quickly as we would like. And some of it was hardware capability from our silicon partners that allowed us to go do that in 2017."
- Xbox Scorpio blockbuster game easily running on ULTRA settings
- Xbox Scorpio NEWS: Is this what new Xbox will look like on release?
Xbox Games with Gold April 2017 free games Fri, March 17, 2017
MICROSOFT reveals the Xbox One and Xbox 360 lineup of free Games with Gold releases for April 2017.
Play slideshow MICROSOFT 1 of 9
Xbox Games with Gold April 2017
When the Xbox One was released, one of its leading features was the Kinect device.
Microsoft's motion-sensing device was revealed to much fanfare but never really gained much gaming support, past its initial reveals.
This could all change soon with the launch of the Xbox Scorpio, the tech giant will likely employ their sensor as part of its virtual reality support.
However, Populous and Fable creator Peter Molyneux has dubbed the Xbox One’s leading feature as a failure, telling IGN: “You know, Kinect… I'll be honest with you. It was a disaster.
"It was a trainwreck," he continued. "It started as this device which kind of could do everything itself. It didn't take up any processor power, the field of view could encompass the whole room. The audio on it, which no one really talks about, was originally supposed to be multi-sensing, it could sense where you were."
"It ended up being none of those things," he added.
"Its promise… was so enormous. In fact, it reminds me a little bit of VR at the moment.”