Published On: Sun, Nov 12th, 2017

AMD’s Ryzen 7 and Ryzen 5 with Vega muscle into Intel’s mobile space

AMD just opened a new beachhead in its war with Intel by launching two Ryzen laptop CPUs it claims with being the “world’s fastest processor” for ultrabooks.

The two chips launched this morning are:

  • The Ryzen 7 2700U features four cores with simultaneous multi-threading and 10 compute units based on the Vega graphics architecture. The chip has a base clock speed of 2.2GHz and boost speed of 3.8GHz. The GPU will clock “up to” 1,300MHz.
  • The Ryzen 5 2500U also has four cores with SMT. The main difference between it ans the Ryzen 7 2700U is the graphics core and clock speed of the CPU and GPU. The Ryzen 5 has 8 compute units instead of 10, and its cores will clock up to 1,100MHz. The compute cores will hit 2GHz with a boost clock of 3.6GHz.

Both chips are rated at 15-watt TDP, which puts them in direct battle with the Core i5 and Core i7 CPUs used in the vast majority of laptops.

ryzen 7 mobile specs AMD

It’s mostly clock and graphics compute unit differences that set a Ryzen 5 laptop chip apart from a Ryzen 7 APU.

While the compute side is based on the same microarchitecture AMD uses for its celebrated Ryzen and Ryzen Threadripper CPUs, AMD has made some tweaks aimed at maximizing mobile performance:

Precision Boost 2 builds on the original Precision Boost introduced with Ryzen. Its “opportunistic algorithm” tries to run the clock speeds at higher levels based on the CPU’s temperature, current use, and workload, working in 25MHz increments. 

Mobile XFR focuses just on thermals and will give the clocks a 100MHz boost—if the laptop’s cool enough to handle it. In practical terms, AMD said in a five-minute workload, mobile XFR can increase performance up to 23 percent. Laptops must meet the company’s cooling criteria to support mobile XFR. 

AMD claims the chip is dramatically faster compared to 7th-generation Bristol Ridge APUs. The company had projected a 50-percent bump in CPU performance and a 40-percent bump in GPU performance with 50 percent less power. Based on the company’s testing the CPU has overachieved: It’s 200 percent faster in CPU operations and 128 percent faster on the GPU side, while using 58 percent less power. 

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ryzen mobile vs 7th gen apu target beat AMD

AMD said the new mobile Ryzen APU far exceeded its target goals.

What makes it the “world’s fastest processor” 

Beating up on a Bristol Ridge isn’t the goal, of course. AMD said it’s the combination of the performance Ryzen cores and the performance Vega cores that gives Ryzen 7 and Ryzen 5 a boost over Core i7 and Core i5 in laptops.


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