Chinese language tech information website mydrivers.com lately reviewed Lenovo’s new Yoga Air 14s 2023 Ryzen Version, that includes the Lenovo-exclusive AMD Ryzen 7 7840S CPU. That is an 8-core/16-thread Zen 4 chip, with a decrease 30W TDP. The tech outlet revealed that the 7840S with a 30W TDP performs exceptionably nicely, touchdown simply 5% under AMD’s far more power-hungry 45W Ryzen 9 7940HS CPU.
The Ryzen 7 7840S and its little brother the Ryzen 5 7640S should not your conventional AMD Ryzen CPUs and should not be confused with their “HS” sequence counterparts. What makes them particular is that they each are made completely for Lenovo and should not purchasable by another OEM (no less than proper now).
In comparison with AMD’s 7040HS-series CPUs, these “7040S” CPUs require much less energy and technology much less warmth, that includes a 30W TDP in comparison with the configurable 35-45W TDP on the 7040HS components. The 7840S specifically options eight Zen 4 CPU cores with a clock pace of three.30–5.10 GHz, Radeon 780M graphics, and AMD’s 7040-series unique Ryzen AI chip for hardware-based AI acceleration. The 7840S constructed into the Yoga Air 14s 2023 Ryzen Version additionally makes use of AMD’s bigger FP8 package deal that is designed to assist high-performance interfaces resembling AMD’s MIPI SCI.
It stays a thriller why these chips are unique to Lenovo, however this isn’t the primary time we have seen OEM-exclusive CPUs. MyDrivers examined the 7840S laptop computer in quite a lot of completely different benchmarks, together with all of the Cinebenches, R15, R20, and R23, POV-Ray, X264, X265, a chess benchmark, and 3DMark.
General, the 7840S scored extremely nicely, that includes only a 5% efficiency decrease rating than AMD’s Ryzen 9 7940HS CPU that packs greater clock speeds and a 50% greater TDP. Nonetheless, there are a couple of workloads (x264 and x265) the place the hole was fairly a bit bigger.
Take these outcomes with a touch of salt since we have solely seen this laptop computer benchmarked by one reviewer up to now. But when the benchmarks are correct, the 7840S is a critically power-efficient CPU that behaves equally to AMD’s Ryzen Z1 chip.
Lenovo is not dishonest both with an enormous beefy cooling resolution and an additional thick chassis which may permit the chip to spice up greater with additional low thermals. The Yoga 14s incorporates a very skinny 13.9mm chassis, near what most different ultra-thin laptops make the most of. Past the CPU, the Yoga 14s Ryzen Version packs lots of premium options, together with a 14.5 inch 2944×1840 display screen that includes a peak brightness of 600 nits, a variable refresh charge 90Hz display screen, Dolby Imaginative and prescient assist, Show HDR 500 assist, and Eyesafe 2.0 safety.
It additionally packs a formidable 6-speaker audio system and a big 70Wh battery, which in keeping with MyDrivers will get greater than 14 hours of battery life. Storage and reminiscence are about pretty much as good because it will get together with 32GB of tremendous speedy LPDDR5X 6400MHz RAM and a 1TB PCIe 4.0 PM9A1 Samsung SSD.
Lenovo has apparently made one of the vital fascinating Ryzen laptops in the marketplace. Not solely does it function lots of premium options, however the Lenovo-exclusive Ryzen 7 7840S packs a formidable quantity of firepower in such a small package deal — sufficient firepower to compete with AMD’s considerably greater wattage Ryzen 9 items.