You should be careful when buying a mobile Ryzen 5000 U series processor because some models come with the old Zen 2 architecture.
If you’re browsing the market for a brand new gaming PC with AMD’s sleek Ryzen 5000 series mobile processors, one thing to watch out for: Is the chip you’re going to buy the latest Zen 3 architecture or the slightly older Zen 2?
You won’t encounter this problem on high-end gaming laptops powered by H-series or HX-series chips, but there can be a confusion when it comes to power-efficient chips found mostly in thin and light laptops.
Essentially, whether the chip was built using the latest Zen 3 architecture, which is also found in AMD Ryzen 5000 desktop processors, or using the Zen 2 architecture in earlier 4000 mobile processors and Ryzen 3000 desktop chips can vary for U-series processors.
The differences between the two can also be obvious, and distinguishing one from the other is not just by looking at the name AMD gives the product.
|Architectural||Core / Thread||Base / Boost Frequency (GHz)||Belnbellek (MB)||TDP (Watt)|
|Ryzen 9 5980HX||Zen 3||8/16||3.3 / 4.8||20||45+|
|Ryzen 9 5980HS||Zen 3||8/16||3 / 4.8||20||35|
|Ryzen 9 5900HX||Zen 3||8/16||3.3 / 4.6||20||45+|
|Ryzen 9 5900HS||Zen 3||8/16||3 / 4.6||20||35|
|Ryzen 7 5800H||Zen 3||8/16||3.2 / 4.4||20||45|
|Ryzen 7 5800HS||Zen 3||8/16||2.8 / 4.4||20||35|
|Ryzen 5 5600H||Zen 3||6/12||3.3 / 4.2||19||45|
|Ryzen 5 5600HS||Zen 3||6/12||3 / 4.2||19||35|
|Ryzen 7 5800U||Zen 3||8/16||1.9 / 4.4||20||15|
|Ryzen 7 5700U||Zen 2||8/16||1.8 / 4.3||12||15|
|Ryzen 5 5600U||Zen 3||6/12||2.3 / 4.2||19||15|
|Ryzen 5 5500U||Zen 2||6/12||2.1 / 4||11||15|
|Ryzen 3 5300U||Zen 2||4/8||2.6 / 3.8||6||15|
As we mentioned earlier, the only models that saw a possible Zen 2 drop are the U series. This means a reduction in overall cache memory and a lower instruction set performance per hour (IPC), which can be up to 19 percent lower performance in some cases.
Which processors in Pei Zen 2? It comes with three AMD Ryzen 5000 mobile processors Zen 2: Ryzen 7 5700U, Ryzen 5 5500U and Ryzen 3 5300U.
Perhaps the most surprising Zen 2-based chip of the table is the Ryzen 7 5700U model, which runs slightly slower than the Zen 3-based Ryzen 7 5800U and comes with only 12MB of cache compared to the 5800U’s 20MB. Both are rated for the same 15W TDP, but the Zen 3 chip is more capable within this power budget.
It’s not a big loss for gamers, because even though the Zen 3 architecture has proven to be successful in the latest games, it is unlikely that you will find a gaming PC equipped with a low-power U series. These chips tend to be found in thin and light notebooks that are mostly office oriented.
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