WHY IT MATTERS: Nvidia just announced what it calls the most efficient PC chip ever built. RTX Spark is a Grace Blackwell system on a chip, 70 billion transistors on TSMC 3nm, with a Blackwell RTX GPU, a 20-core Arm CPU built with MediaTek, and up to 128GB of unified memory. It is purpose-built for agents, and it runs full RTX gaming and creation on the same thin-and-light laptop. It is a genuinely impressive piece of silicon.
Ryan Shrout is a longtime technology analyst and industry veteran who has spent over two decades covering PC hardware, graphics, and semiconductors. He previously led technical marketing at Intel and was the founding editor of PC Perspective. He is currently President and GM at Signal65. You can follow him on X @ryanshrout.
RTX Spark is also, in its top configuration, the GB10 that is the same chip in DGX Spark, which we have already measured at Signal65.
So while we already know where this silicon lands against x86 and against Apple in real CPU and GPU throughput, there are going to be a lot of questions about the competitive comparisons in the Windows laptop space.
This is known silicon, not a surprise, and RTX Spark is arriving a little later than the original plan, which takes some shine off the raw spec reveal. We are not learning what the chip can do today. We mostly already knew.
