AMD Ryzen 7 3700X AM4 CPU Review: Page 6 of 7

Posted by Damon Bailey on Sunday, July 7, 2019 - 9:00am

Memory, Overclocking & Power Consumption

AMD Ryzen 7 3700X

One of the biggest complaints with the previous generations of Ryzen processors was a lack of support for high-speed memory when every little bit higher than you could push the memory, the more overall performance you would see. AMD has used a new memory controller this generation to combat this and advertises fast memory is supported with ease. This comes with a small caveat though, anything over 3733 Mhz would shift gears and would drop the Infinity Fabric to Memory ration back to 2:1 instead of 1:1.

AMD Ryzen 7 3700X

We did all of our testings with 3200MHz memory, something that itself was a struggle to achieve on the first generation.

AMD Ryzen 7 3700X

3600Mhz works well at 69.9 ns latency.

AMD Ryzen 7 3700X

We see a good bump from the 3200Mhz 1903cb score.

AMD Ryzen 7 3700X

4000 MHz sees about the same overall bandwidth but jumps to 80.9 ns of latency.

AMD Ryzen 7 3700X

The jump to 4000 MHz actually drops the score slightly from the jump in latency.

AMD Ryzen 7 3700X

At 4266Mhz, we see the bandwidth largely unchanged, but the latency is starting to come back down at 77.8ns.

AMD Ryzen 7 3700X

Moving the speed up a little more doesn’t really change the score.

AMD Ryzen 7 3700X

Even at 4333MHz, we still see roughly the same bandwidth, but the latency has dropped again to 77ns.

AMD Ryzen 7 3700X

Even a little higher we see no real change in score.

AMD Ryzen 7 3700X

Next, we’ll drop the memory back to 3200MHz and try opening up the Precision Boost Overdrive window up, letting it grab another 200MHz. this gets us a good jump in score over the 1903cb stock.

AMD Ryzen 7 3700X

Manually overclocking, we were unable to get stable above 4.4GHz all cores, but this does give us another 100 points or so in Cinebench.

AMD Ryzen 7 3700X

Pushing the memory up to 4133MHz at the same time gives us just the slightest increase in score.

AMD Ryzen 7 3700X

These settings give us a minute and a half faster 32M time in Super Pi as well.

AMD Ryzen 7 3700X

Power consumption looks great and we see a drop from the previous 2700X under load thanks to the 65W TDP.

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