Those Xbox Series X specs don't tell us much, do they?

In its blog post, Microsoft claims that the AMD Navi GPU in the Xbox Series X will be capable of 12 teraflops of graphics performance, and that's actually a pretty high number. Just taking a look at the AMD Radeon RX 5700 XT, which is based on the original RDNA architecture, AMD lists the GPU as being capable of 9.75 Tflops of FP32 performance, but that's based on the boost clock.Now, starting with Navi, AMD began listing the clock speeds for its graphics cards in three tiers: a base clock, a 'game clock' and a 'boost clock'. The game clock is closer to what Nvidia lists as the boost clock for its GPUs, and is typically the clock speed the graphics card will sit at most of the time when playing games.So going back to the Radeon RX 5700 XT, a more accurate measurement of teraflops, based on the clock speed you'll be sitting at most of the time when playing games is actually around 8.96 Tflops – a full 8% below that peak number. But given we don't have that detailed spec information on the RDNA 2 chip in the Xbox Series X, we don't know how far clock speeds will fall when it settles into its 'game clock' – we suspect the lower power requirements of the console will see it fall pretty far, though.