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AMD Ryzen 9 3900X Vs Intel Core i9-9900K IPC Shootout - TechAmok
AMD Ryzen 9 3900X Vs Intel Core i9-9900K IPC Shootout - [hardware] 02:10 PM EDT - Jul,26 2019 - post a comment Now that the dust has settled, it's time to figure out where these performance improvements originated. AMD's new Ryzen CPUs can clock as high as 4.5 GHz, a notable bump over previous models, but what about AMD's purported IPC gains? Has Zen 2 caught up to Coffee Lake? To test this hypothesis, Hothardware fired up their Ryzen 9 3900X and Core i9-9900K test benches again. Both CPUs had their maximum multipliers capped at 40 across all cores, which for both CPUs resulted in a nice, round 4 GHz. The AMD Ryzen 9 3900X we had on hand also had two cores disabled on both of its chiplets, bringing the total core count down from 12 to 8, a perfect match to Intel's octal-core Core i9-9900K. This should put both CPU architectures on an even playing field.
These Intel and AMD multi-core processors traded blows across all of our CPU tests, but Intel won more often than not. The blue team notched IPC wins in SANDRA's Dhrystone integer tests, Geekbench, POV-Ray, LAME MT, 3DMark, and Middle Earth: Shadow of War. AMD stole single-threaded victories in SANDRA's Whetstone FPU tests, Cinebench, and Y-Cruncher. While not an outright thread-for-thread win for AMD, the company has obviously worked hard to improve 3rd Gen Ryzen performance in lightly-threaded loads, while it's multi-core scaling is downright impressive.
We came into this experiment hoping to learn something about AMD's improvements in instructions-per-cycle (IPC) performance. Our testing bears out that the company has made significant strides in this area. Previously, buying advice was something like, "if you need lots of cores and are pinching pennies, look at AMD Ryzen, but if you need stronger lightly-threaded performance, Intel is king." While Intel still has an overall advantage in low-thread-count situations like the ones we've explored today, the gap has been closed down dramatically. AMD has successfully turned the tables with 3rd Gen Ryzen 3000 series processors that bring a notable IPC lift across the board. You can't go wrong with either Intel or AMD platforms for single-threaded performance, but when you take Ryzen's higher core counts at a given price point into consideration, AMD's new hotness is head-turning and hard to deny.
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