AMD’s Zen 4 processors can display remarkable performance-per-watt once they’ve been manually tuned, or if you enable ECO mode in the system setup. You lose some multi-core performance, but the power consumption of the chip drops drastically. That could explain what we’re seeing with some leaked benchmarks for what is purportedly a Ryzen 7 7840U laptop processor.
Meanwhile, this mobile processor with its “U” designation should have a power limit of 28W or less. That means we’re seeing 105W eight-core Zen 3 performance out of a low-power mobile chip destined for thin & light machines, and that TDP is shared with a large RDNA 3 graphics processor, too—something that neither the 5800X nor the 7600X have to contend with.
The leaker includes some other benchmark scores, and we don’t have our own data to compare unfortunately, but looking at the 3DMark Fire Strike result database on UL’s website, the Radeon 780M’s listed 3DMark Fire Strike graphics score of “about 8000” puts it in the same general region of performance as the very fastest Radeon 680M parts.
If this ultraportable CPU is matching AMD’s fastest integrated graphics in pre-release form, that bodes well for the Phoenix IGP’s gaming chops. We’re extremely curious to see what these chips can do for ourselves, so look out for a review once we get our hands on one.