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AMD Ryzen 7 2700X and Ryzen 5 2600X Review

By: Steven Bassiri | AMD CPUs in CPUs, Chipsets & SoCs | Posted: Apr 19, 2018 1:00 pm
TweakTown Rating: 94%Manufacturer: AMD

CPU Overclocking

 

 

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So AMD's Ryzen Master 1.3 brings a lot of improvements and new features to the table, including Precision Boost Overdrive, which is like multi-core enhancement for AMD. To overclock, you need to switch to one of the profiles, and then click the circle to the right of the setting. To change the frequency you need to change Control Mode to Manual from Auto, and then you can increase core frequency, and you can select all core if you want to change all cores at the same time. We booted into Windows with our memory OCed to 3600MHz and CPU to 4.0GHz and then boosted up cores only to see how high we could get in Windows while running HandBrake.

 

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We used to set our VCore to 1.36v with our Ryzen CPUs, now we set 1.35v and leave LLC on auto allowing the voltage to drop to around 1.32v under AVX load in HandBrake. Overclocking the memory was very easy, we loaded a type of XMP (in the ASUS board it's call DOCP), which set our kit to 3400Mhz, and then we increase the memory multiplier to 36x to get 3600Mhz. We could have tightened timings down to CAS 13 and we could have tweaked tFAW to get much better latency results, but we decided to just keep XMP timings. Our 2700X was able to maintain 4.25GHz while our 2600X was able to do 4.275GHz since it has a lower TDP and fewer cores (lower temperature).

 

 

Temperatures will be your biggest limiting point (remember the 2700X has a 10C offset while the 2600X has none), and your cooling will determine how far you go. We used a Corsair H100i liquid cooler. We also attended an event where AMD Ryzen 2nd Generation was being overclocked, there eight motherboards, two from each vendor, and half of the systems used air coolers while the other used water coolers. From that testing and looking around, we saw that by using an all-in-one you could gain you 50-150MHz compared to a high-end air cooler.

 

 

Power Consumption

 

 

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These numbers are measured at the 8-pin connector, which feeds the CPU power, and we can see that AMD has basically tweaked the voltage/frequency curve to favor performance over power efficiency. You can't just compare nanometer sizes, so while Global Foundries might call their process 12nmLP, it doesn't mean it's more power efficient than Intel's 14nm process. With these new CPUs AMD has basically unleashed the full performance of their Zen microarchitecture with leakier transistors, but much better performance gains.

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