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Ryzen 7 4700U, 8 cores without SMT ?

Question asked by knight_h on Jun 20, 2020
Latest reply on Jun 26, 2020 by knight_h

Hi everyone ! 

 

Yet again another point that caught my eye with Ryzen 4000 series. 

I found various ultrabooks coming out with Ryzen 7 4700U. However when comparing the performances of this processors with other 4000 series CPUs I got a bit confused ! 

 

The 4700U looks very similar to 4800U without the SMT(simultaneous multithreading) and with a slightly less performant GPU. The 4700U has 8 cores / 8 threads while 4800U offers 8 cores / 16 threads. At this point I can understand that 4800U should perform much better at multi-core computing as it can be seen on benchmarks (cpubenchmark.net / cpu-monkey).

 

Even if at this point I wonder if it is really justified for someone to go for 4700U while the price difference with 4800U is not that big, things become really weird when I compared Ryzen 7 4700U with Ryzen 5 4600U. The Ryzen 5 4600U has 6 cores/12 threads and it gets 3% less performance at single-threading but performs better than Ryzen 7 4700U at multi-core processing by 7%  while it is cheaper than 4700U !

 

     (source : cpubenchmark.net)

 

So I'm really wondering why did AMD commercialise the 4700 ?  Is there any technical reason behind this or it is only a marketing strategy ? 

 

Thank you in advance ! 

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