AMD Ryzen Review: Ryzen 7 1800X, 1700X, And 1700 - Zen Brings The Fight Back To Intel

3DMark Physics And 4K / 1080P Gaming Benchmarks

For our next series of tests, we moved on to some game-related metrics with Crysis and 3DMark, specifically the physics benchmark that's part of the Fire Strike test. When testing processors with Crysis, we drop the resolution to 1024x768, and reduce all of the in-game graphical options to their low preset values to isolate CPU and memory performance as much as possible. However, the in-game effects, which control the level of detail for the games' physics engines and particle systems, are left at their maximum values, since these actually do place a load on the CPU rather than GPU.  For the 3DMark Physics test, we simply create a custom 3DMark run consisting solely of the physics test, which is CPU dependent, and report the results...

Gaming: Crysis and 3DMark Physics
Taking the GPU out of the Equation

3dm physics


Things got a little wonky here. The AMD Ryzen 7 series processors performed very well in the 3DMark Physics tests and notched in either right in-line with, or slightly behind, the much more expensive Core i7-6900K. In the Crysis CPU test, however, performance cratered and actually trailed the FX 9590. The Crysis test is affected by cache sizes, bandwidth, latency, etc. -- and is so old there's not way it's running optimally on Ryzen -- but the results are interesting regardless. We experimented with different GPUs and memory settings, but the trend was similar. Something held Ryzen back here.

High Resolution Gaming Tests
1080P and 4K Gaming With GeForce GTX 1080

We also ran some high-resolution game and graphics tests on AMD's new Ryzen processors using 3DMark, Hitman, and Ashes Of The Singularity. We used 3DMark's Fire Strike Ultra preset, and both of the games were run with 4K and 1080P resolutions, with all in-game graphics options set to their maximum values for the 4K tests and "High" preset values for the 1080P tests. Note, we also swapped out the GTX 960 for a GeForce GTX 1080 here.

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The 3DMark Fire Strike results are tight. The 6900K's higher clocks help propel it into the top spot, followed by the three Ryzen 7 series processors. The overall scores and individual framerates are tightly grouped, with only small percentages separating the processors' performance.

hit fps 1080

hit 1080 ft
Game performance was also competitive with the DirectX 12 title, Hitman. The Core i7-6900K took the lead overall, but the Ryzen 7 1800X wasn't too far behind. We've also included frametime data comparing the 6900K and 1800X and though the AMD processors had a somewhat lower average framerate, frame pacing was somewhat better.

hit fps 4k

hit 4k ft
With Hitman's resolution cranked up to 4K, the AMD Ryzen 7 1800X actually takes the lead by a small percentage. The frametime data at 4K also looks somewhat better for the Ryzen processor.

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Things kind of went off the rails with Ashes Of The Singularity, though. We're going to get the 4K numbers out of the way first, because they don't have any surprises to explain. All of the processors were tightly grouped, though the Core i7-6900K had an overall advantage in all of the tests.

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And then this happened at 1080p. The AMD Ryzen 7 processors remained tightly grouped, but the Intel Core i7-6900K stretched its legs and scampered off to a massive lead. Sometime is amiss.

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ashes cpu1

The CPU focused tests in Ashes also showed similar, huge deltas.

We spent a lot of time experimenting with different settings, drives, and graphics cards trying to understand what was happening in Ashes, but never nailed down a clear answer.  We tried testing the game with and without SMT, with and without Cool n' Quiet, at different memory speeds, at different power plans, and also while manually setting frequencies in multipliers. Ultimately, we could get the score to go up or down measurably, but could never get things in-line with expectations. It is possible that a combination of SenseMI’s algos not detecting some workloads properly, lackluster cache / memory latency with some data sets, and / or a PCI Express throughput issue could be what's causing the questionable low-res gaming performance, but we are not sure at this juncture.

We have been in contact with AMD in an effort to get to the bottom of this, but haven't reached a definitive resolution. Representatives from AMD said we can expect some weirdness with older games, but we couldn't consider Ashes very old. Crysis (above), yes. But not Ashes.  With that said, even with newer titles, optimizing game engines to best utilize new processor architectures still requires work. To that end, Oxide -- the makers of this game -- put out a statement yesterday. “Oxide games is incredibly excited with what we are seeing from the Ryzen CPU. Using our Nitrous game engine, we are working to scale our existing and future game title performance to take full advantage of Ryzen and its 8-core, 16-thread architecture, and the results thus far are impressive. These optimizations are not yet available for Ryzen benchmarking. However, expect updates soon to enhance the performance of games like Ashes of the Singularity on Ryzen CPUs, as well as our future game releases” ,said Brad Wardell, CEO Stardock and Oxide.

We are reporting these scores because they are repeatable, and somewhat align with a few of our other tests (and anecdotally with what we're hearing from some colleagues in the tech press). We know that AMD is actively working to improve memory support and performance on its new platform through BIOS and firmware updates, and that SenseMI algos can be tweaked, so it's possible improvements are on the way.

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