AMD has launched two laptop CPUs – the Ryzen 5 and the Ryzen 7, and these laptops are ready to wage a war against Intel’s 8th generation i7 processors. The company claims that these are “the world’s fastest processors for ultrabooks”.
Let’s see what these chips have got, shall we?
The Ryzen 7 2700U has 4 cores with simultaneous multithreading and 10 compute units based on the Vega graphics architecture. It has a base clock speed of 2.2Ghz with a boost speed of up to 3.8Ghz. The GPU clocks up to 1300MHz. The Ryzen 5 2500U also has 4 cores with SMT. The main difference between this and the 2700U lies in the graphics core and clock speeds. This is slightly slower with a clock speed of 2GHz and boost speed of 3.6GHz. Also, the 2500U has 8 compute units instead of 10 and its GPU clocks up to 1100MHz.
These chips are rated at 15 watt TDP, which is exactly the same as Intel’s Core i5 and i7 processors used in majority of the laptops. The compute cores are based on the same architecture as AMD’s famous Ryzen or Ryzen Threadripper CPUs, though there are some minor changes aimed at optimizing mobile performance.
One of them is the Precision Boost 2, which extends from the original Precision Boost that is featured in the Ryzen. Its “opportunistic algorithm” tries to run higher clock speeds based on the CPU’s current working parameters. The mobile XFR will give the clock a 100 MHz boost if the CPU is cool enough to take it. These chips seem to be overachievers: according to the company’s testing they are 200% faster in CPU operations and 128% faster in GPU operations, while consuming 58% less power.
What makes it the fastest?
AMD showed off several performance test results of the Ryzen5 and Ryzen7 against Intel’s 7th generation Core i7 Kaby Lake and the newly launched 8th generation Kaby Lake Refresh. In single threaded CPU tests using Cinebench R15, the Ryzen 7 almost matches the performance of a 7th generation Core i7 7500U and is just a little behind the 8th generation Core i7 8550U. On multi-threaded tests, the Ryzen7 absolutely defeats the dual core Core i7 7500U in HP’s Envy x360 and surprisingly, also the quad core Core i7 8550U in Acer’s Spin 5. However, the laptops AMD is using to run these tests are convertibles, which run slightly slower than conventional laptops, though the HP Envy x360 might be the first laptop to support mobile XFR.
In POVRay, PCMark 10 and TrueCrypt, Ryzen is leading. In PassMark 9, the new Intel chip emerges victorious, but by a very small margin. In gaming, AMD says that the Ryzen7 crushes the graphics in Intel’s chips in the 3DMark Time Spy benchmark. It also keeps pace with the GeForce GTX 950M in an ultra thin laptop.
About battery life..
Although we do not know about the Ryzen 7’s battery life in comparison to the Intel chips, it is certainly better than a 7th generation APU. Battery life is a key factor when it comes to laptops. For VP9 playback, Ryzen 7 has a battery life of 9.2 hours while AMD’s FX 9800P chip is stuck at 4.5 hours. For the standard 1080p H.264 playback, it goes from 10.6 to 12.2 hours. In the standard MobileMark 14 battery rundown test, the Ryzen 7 gave a nice 13.5 hours of battery life and the FX chip died at 10.7 hours.
What’s inside these chips?
The new chips are fabricated on a 14nm process by GlobalFoundries in New York. Ryzen for laptops uses a single quad core CCX. There are six components connected to the company’s Infinity Fabric: multimedia engines, display engines, I/O and system hub, DDR4 controllers, Zen cores, Vega graphics cores.
In conclusion, Ryzen 5 and Ryzen 7 looks like it’s about to give some stiff competition to Intel. Since a vast majority of laptops use Intel chips, this might mean a change in market trends too.