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Guru3D.com » News » Ryzen Mobile 5 4500U-hexacore review appears online

Ryzen Mobile 5 4500U-hexacore review appears online

by Hilbert Hagedoorn on: 02/06/2020 10:07 AM | source: overclockers.ua | 17 comment(s)
Ryzen Mobile 5 4500U-hexacore review appears online

A website in Ukraine posted review of a laptop with a Ryzen 5 4500U online. That would be a non hyper-threading / SMT based hexa-core processor made at 7nm with a TDPof 15W. The chip performs a lot better in most benchmarks than AMD's previous laptop processors.

The review itself contains relatively little benchmark comparisons in order to be able to assess the performance very precisely but measurements on battery life are actually very interesting. The product is an Acer Swift 3 and a 50.29 Wh battery. In a test with PCMark 8, it achieved a runtime of 7 hours and 18 minutes. With PC Mark 10 Video and PC Mark 10, on the other hand, it achieved 9 hours 44 minutes and 12 hours 4 minutes, respectively.

In the Cinebench R15 Multi the Acer laptop scores 785 points. That's more than recent quad-cores from Intel, Intel's hexacore with HyperThreading, the Core i7-10710U achieves a higher score in a thousand points marker. AMD Ryzen 5 4600U is a processor that does not have SMT. The processor has a Radeon Vega 6 GPU and thus has fewer shader cores than the Vega 8 and 10 GPUs of Ryzen laptop processors of previous generations, but the cores are clocked higher. 

 

ProcessorNodearchitectureCores /
threads
Base /
(Turbo clock)
L3
cache
TDPGPUMax.
GPU clock
Ryzen 5 4500U 7 nm Zen2 6/6 2.3 GHz (4.0 GHz) 8 MiB 15 W. 6 CPU Vega 1.5 GHz
Ryzen 5 3500U 12 nm Zen+ 4/8 2.1 GHz (3.7 GHz) 4 MB 15 W. 8 CU Vega

1.2 GHz

 

The Swift 3 with Ryzen 5 4500U would have great battery life. If you take some numbers from an Acer Swift 3 SF314-41 at  Notebookcheck.com you can compare a bit back and forth with last gen. Laptops with Ryzen 4000 processors should be released around March or April.

  

 Acer Swift 3 SF314 ‑4Acer Swift 3 SF314-42
Processor Ryzen 5 3500U Ryzen 5 4500U
Cinebench R15 CPU Multi 646 785
Cinebench R 20 CPU (Multi-Core) 1294 1843
3DMark Time Spy 742 947
3DMark Fire Strike 2433 2641
PCMark 10  3907 5024
Geekbench 5 Single-core 886 1074
Geekbench 5 Multi-core 3067 4282


 







« Gigabyte offers large capacity, DESIGNARE DDR4 Memory 64GB (2x32GB) 3200MHz · Ryzen Mobile 5 4500U-hexacore review appears online · Advertorial: Hot deals at CDKoffers - Windows 10 for just $12.95 »

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H83
Senior Member



Posts: 3867
Joined: 2009-09-08

#5758330 Posted on: 02/07/2020 04:29 PM
The 3700h/u is a 4core part just be aware.


I know and for me that´s sufficient. I only need powerful parts for my gaming rig, for everything else even a modern dual core is more than enough.

schmidtbag
Senior Member



Posts: 6492
Joined: 2012-11-10

#5758335 Posted on: 02/07/2020 04:41 PM
I was able to add 10-20% performance, can we say the same for AMD solution? I would like to see some test both side with enabled and disable multithreading and games and non games.. maybe someone did that?

Are you saying that HT gave you a 10-20% performance yield vs it being off? Because with modern mitigations, that sounds about right. Without migitations, HT yields an overall benefit of 30%, and there isn't much room for it to go any faster.
AMD's solution is a bit more hit of miss, because it relies on a competent scheduler and it's not as flexible about workloads as HT is. When used properly, it can result in a 50% performance gain (theoretically, even higher). For the average workload, it's not really any better than HT.

The way I like to look at it:
Intel's solution is better if you like to multitask. The idea behind HT is to fill up the pipeline with queued instructions, which works great when running many independent single-threaded tasks (or in the case of games, a thread for logic and a thread for rendering, for example). But because HT doesn't truly run tasks in parallel, this is where it can actually hurt your performance, because such an application has to wait for the logical threads to sync with the main process. In the early days of HT, a lot of gamers deliberately disabled HT.
AMD's solution is better if you run individual tasks that are multithreaded. This is because a pair of integer and FP units share the same fetch, encode, decode, etc. Unlike Intel, AMD's solution has physically separate transistors, allowing truly parallel workloads per clock cycle. But, because of the shared resources, this makes AMD CPUs very inefficient at running many unrelated tasks. So using games for an example again, a single AMD core isn't ideal to run a logic thread and a rendering thread because their instructions are very different.

Like Intel, AMD's CPUs can lose performance with SMT enabled, depending on the workload. However, now that getting many-core CPUs is becoming so affordable, AMD's method begins to look much more appealing. What would normally make AMD's SMT yield worse performance can be easily overcome by just using a physically separate core. Intel's method was great for its time, because it allowed Intel to squeeze in more performance with fewer transistors, back when a single core took up a LOT more physical space.

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