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It may have slipped your notice if you haven't been looking up detailed specs on the Steam Machine, but the device is shipping with 1 stick of DDR5 memory from the manufacturer, meaning you'll be running your memory in single channel, rather than the standard dual channel that most devices employ.
What does this mean in real-world terms? Well, you might see degraded performance, such as stuttering, in intensive scenes when the CPU needs to access large amounts of memory quickly. Having 2 sticks of DDR5 RAM in a device allows the CPU to access both sticks simultaneously, but with just 1 stick, it has to handle all of the reading and writing by itself.

So why did Valve make the decision to go with 1 stick of 16GB memory instead of 2 sticks of 8GB memory? Simply put, they had no choice. According to Steam Machine engineer Yazan Aldehayyat (speaking to Digital Foundry), getting hold of 8GB SODIMM sticks proved "literally impossible", effectively forcing them to adopt a single stick of 16GB of DDR5.
It's not all doom and gloom, though. The Steam Machine does have 2 SODIMM slots, so if you do want to upgrade the memory of your Steam Machine in the future, you can grab another 16GB stick and insert it to boost your memory up to 32GB. This would have been more difficult (and costly) had the device shipped with 2 8GB sticks. It's a shame that this is left up to the end-user, however.
Most games likely won't see big performance hits from this decision, but CPU-intensive games may start to show degraded performance compared to what you would otherwise see with dual channel.
Source: Digital Foundry
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It is LESS powerful than a base PS5! The GPU is somewhere between a Radeon 6700-7600. For $1k 🧐
And you can't upgrade(beyond a ram stick...which isn't much. Even the n64 let you do that 😂).
So much for 4k60 as Valve said a year or two ago. It's barely 1080p60 for many games.
This is a box from 2020 for a 2026 market.
Just make your own small PC box and install Linux, steamOS, and/or windows(and use steam Big picture) on it instead IF you really don't want a PS5/Xbox.
The upgrade option the author proposes isn't realistic. If you did upgrade your RAM, you'd almost certainly buy 2 sticks to ensure that matched.
As long as you match the speed and latency of the current RAM stick provided by Valve, there should be no issue. It's not always recommended to mix and match RAM, but if you know what you are doing, it's certainly possible.
It's not ideal but will probably be fine. DDR5 single channel bandwidth is much better than DDR4 single channel. That said, I'd never throw money away on one of these underpowered, overpriced turds.
For the price this is starting at BASE, they could've just upgraded it to two 16gb sticks....😒
You can't add a second DDR5 stick to this however easily. DDR5 requires sticks to be binned for dual channel operations. If you add a second stick of the same brand and model, you likely will run into system instability and crashes. You need to replace both sticks so it doesn't really help much.
On the bright side this is a better setup for future upgrade. Assuming that upgrading is possible. If upgrading isn't possible you should build a PC.
I believe it is possible, but also...is it affordable to upgrade right now?
Kind of...
while it is cheaper to get just one, to get the full benefits of both sticks they have to be similar.
Otherwise they will default their speed to the lowest of the 2.
But more RAM is more RAM and in DDR5 speeds it might not matter that much