The AMD Zen and Ryzen 7 Review: A Deep Dive on 1800X, 1700X and 1700
by Ian Cutress on March 2, 2017 9:00 AM ESTBenchmarking Performance: CPU Rendering Tests
Rendering tests are a long-time favorite of reviewers and benchmarkers, as the code used by rendering packages is usually highly optimized to squeeze every little bit of performance out. Sometimes rendering programs end up being heavily memory dependent as well - when you have that many threads flying about with a ton of data, having low latency memory can be key to everything. Here we take a few of the usual rendering packages under Windows 10, as well as a few new interesting benchmarks.
Corona 1.3
Corona is a standalone package designed to assist software like 3ds Max and Maya with photorealism via ray tracing. It's simple - shoot rays, get pixels. OK, it's more complicated than that, but the benchmark renders a fixed scene six times and offers results in terms of time and rays per second. The official benchmark tables list user submitted results in terms of time, however I feel rays per second is a better metric (in general, scores where higher is better seem to be easier to explain anyway). Corona likes to pile on the threads, so the results end up being very staggered based on thread count.
Blender 2.78
For a render that has been around for what seems like ages, Blender is still a highly popular tool. We managed to wrap up a standard workload into the February 5 nightly build of Blender and measure the time it takes to render the first frame of the scene. Being one of the bigger open source tools out there, it means both AMD and Intel work actively to help improve the codebase, for better or for worse on their own/each other's microarchitecture.
LuxMark
As a synthetic, LuxMark might come across as somewhat arbitrary as a renderer, given that it's mainly used to test GPUs, but it does offer both an OpenCL and a standard C++ mode. In this instance, aside from seeing the comparison in each coding mode for cores and IPC, we also get to see the difference in performance moving from a C++ based code-stack to an OpenCL one with a CPU as the main host.
POV-Ray 3.7
Another regular benchmark in most suites, POV-Ray is another ray-tracer but has been around for many years. It just so happens that during the run up to AMD's Ryzen launch, the code base started to get active again with developers making changes to the code and pushing out updates. Our version and benchmarking started just before that was happening, but given time we will see where the POV-Ray code ends up and adjust in due course.
Cinebench R15
The latest version of CineBench has also become one of those 'used everywhere' benchmarks, particularly as an indicator of single thread performance. High IPC and high frequency gives performance in ST, whereas having good scaling and many cores is where the MT test wins out.
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EchoWars - Thursday, March 2, 2017 - link
No, apparently the failure was in your education, since it's obvious you did not read the article.Notmyusualid - Friday, March 3, 2017 - link
Ha...sharath.naik - Thursday, March 2, 2017 - link
I think you missed the biggest news in this information dump. The TDP is the biggest advantage amd has. Which means that for 150watt server cpu. they should be able to cram a lot more cores than intel will be able to.Meteor2 - Friday, March 3, 2017 - link
^^^This. I think AMD's strength with Zen is going to be in servers.Sttm - Friday, March 3, 2017 - link
Yeah I can see that.UpSpin - Thursday, March 2, 2017 - link
According to a german site, in games, Ryzen is equal (sometimes higher, sometimes lower) to the Intel i7-6900K in high resolution games (WQHD). Once the resolution is set very low (720p) the Ryzen gets beaten by the Intel processor, but honestly, who cares about low resolution? For games, the probably best bet would be the i7-7700K, mainly because of the higher clock rate, for now. Once the games get better optimized for 8 cores, the 4-core i7-7700K will be beaten for sure, because in multi-threaded applications Ryzen is on par with the twice expensive Intel processor.I doubt it makes sense to buy the Core i7-6850K, it has the same low turbo boost frequency the 6900K has, thus low single threaded performance, but at only 6 cores. So I expect that it's the worst from both worlds. Poor multi-threaded performance compared to Ryzen, poor single threaded performance compared to i7-7700K.
We also have to see how well Ryzen can get overclocked, thus improving single core performance.
fanofanand - Thursday, March 2, 2017 - link
That is a well reasoned comment. Kudos!ShieTar - Thursday, March 2, 2017 - link
Well, the point of low-resolution testing is, that at normal resolutions you will always be GPU-restricted. So not only Ryzen and the i7-6900K are equal in this test, but so are all other modern and half-modern CPUs including any old FX-8...The most interesting question will be how Ryzen performs on those few modern games which manage to be CPU-restricted even in relevant resolutions, e.g. Battlefield 1 Multiplayer. But I think it will be a few more days, if not weeks, until we get that kind of in-depth review.
FriendlyUser - Thursday, March 2, 2017 - link
This is true, but at the same time this artificially magnifies the differences one is going to notice in a real-world scenario. I saw reviews with a Titan X at 1080p, while many will be playing 1440p with a 1060 or RX480.The test case must also approximate real life.
khanikun - Friday, March 3, 2017 - link
They aren't testing to show what it's like in real life though. The point of testing is to show the difference between the CPUs. Hence why they are gearing their benchmarking to stress the CPU, not other portions of the system.