The AMD Ryzen 9 7900, Ryzen 7 7700, and Ryzen 5 7600 Review: Zen 4 Efficiency at 65 Watts
by Gavin Bonshor on January 9, 2023 9:00 AM ESTCPU Benchmark Performance: Simulation
Simulation and Science have a lot of overlap in the benchmarking world. The benchmarks that fall under Science have a distinct use for the data they output – in our Simulation section, these act more like synthetics but at some level are still trying to simulate a given environment.
In the encrypt/decrypt scenario, how data is transferred and by what mechanism is pertinent to on-the-fly encryption of sensitive data - a process by which more modern devices are leaning to for software security.
We are using DDR5 memory on the 12th and 13th Gen Core parts, as well as the Ryzen 7000 series, at the following settings:
- DDR5-5600B CL46 - Intel 13th Gen
- DDR5-5200 CL44 - Ryzen 7000
- DDR5-4800 (B) CL40 - Intel 12th Gen
All other CPUs such as Ryzen 5000 and 3000 were tested at the relevant JEDEC settings as per the processor's individual memory support with DDR4.
Simulation
In our simulation-based tests, the AMD Ryzen 7000 65 W SKUs start to break away from each other as single-core IPC performance isn't as crucial as multi-threaded performance in some cases.
The 65 W implementation on the 6C/12 Ryzen 5 7600 starts to show its limitations as a hex-core part, with the Ryzen 9 7900 (12C/24T) performing above our expectations in the majority of our simulation tests.
As expected, the Ryzen 7 7700 (8C/16T) sits in the middle of the three Ryzen 7000 65 W series processors in regards to performance, but it also sits in the middle in terms of specifications, core count, and pricing.
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The Von Matrices - Monday, January 9, 2023 - link
The multiple tests where the 7900 is beating the 7950X by large (>5%) differences in game tests makes no sense and makes me concerned for the repeatability of the test suite. There is nothing (cache, clock speed, architecture, TDP, NUMA) that is inferior on the 7950X compared to the 7900 but somehow it loses by a large margin in many game tests.ag10n - Monday, January 9, 2023 - link
in your conclusion "Of course, users on a budget may want to pair up a Ryzen 5 7600 with a card such as an AMD Radeon RTX 6600"no RTX on the 6600 afaik ;)
boozed - Monday, January 9, 2023 - link
Those power consumption numbers are amazing.While you can make the argument that a "65W" AMD CPU consuming 90W is misleading, at least it's going to be consistently 90W regardless of which model you choose...
thulle - Monday, January 9, 2023 - link
Doesn't it become really weird to talk about efficiency while only comparing to TDP and not actual power consumption for the load? Not everything hits TTP as yCruncher does either.Preferrably the score in each result should be normalized to actual power consumption, or something similar. Even that has its issues though, since the balance between performance and efficiency is somewhat tuneable.
t.s - Monday, January 16, 2023 - link
Seconded! Or write the AVG power for the task. Ex: Cinebench: 7950X (214W) xxx.xxx pointHarry_Wild - Monday, January 9, 2023 - link
Performance difference is not that much! I going with the 7600 for internet surfing, watching streaming videos and email!😁👍LuxZg - Tuesday, January 10, 2023 - link
I was expecting that all along, so I'm glad it's confirmed. Now just to find sensible AM5 MBO at the right price :-/James5mith - Tuesday, January 10, 2023 - link
Real question: Why do CPUs no longer idle in the 800MHz-1600MHz range? Is there too great a change in the multiplier to hit max turbo at this point? Otherwise, what's the point at idling around 3.6GHz?It seems like a waste of power.
qwertymac93 - Tuesday, January 10, 2023 - link
The cores are gated such that they are at 0hz when idle. The clock shown in Windows is just the speed the core ran at when it last reported.fallaha56 - Tuesday, January 10, 2023 - link
Goodness Anandtech do better, ditch the bizarre memory policy and do some PBO testing…