1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

AMD Ryzen 5 3500 spotted: Six Cores but no SMT

Discussion in 'Frontpage news' started by Hilbert Hagedoorn, Aug 26, 2019.

  1. Hilbert Hagedoorn

    Hilbert Hagedoorn Don Vito Corleone Staff Member

    Messages:
    35,885
    Likes Received:
    4,997
    GPU:
    AMD | NVIDIA
    From the looks of things, AMD is to complement its Ryzen 3000 line-up with another six-core. The Ryzen 5 3500 is running 3.6 GHz for a base clock with a 4.1 Ghz Turbo, it, however, lacks Hyperthreadi...

    AMD Ryzen 5 3500 spotted: Six Cores but no SMT
     
  2. Netherwind

    Netherwind Ancient Guru

    Messages:
    6,701
    Likes Received:
    931
    GPU:
    RTX 2080Ti Gaming X
    Perfect for budget gaming but the 3600 is still best bang for the buck.
     
    RzrTrek and airbud7 like this.
  3. Undying

    Undying Ancient Guru

    Messages:
    11,573
    Likes Received:
    1,351
    GPU:
    Aorus RX580 XTR 8GB
    I feel its worth spending extra 50$ for 3600.
     
  4. anticupidon

    anticupidon Ancient Guru

    Messages:
    3,880
    Likes Received:
    677
    GPU:
    integrated
    OEM will salivate over this:
    6 core CPU for the price of 4 and better overall performance!!! Add some RGB and Bang! You are in the game.
     

  5. Undying

    Undying Ancient Guru

    Messages:
    11,573
    Likes Received:
    1,351
    GPU:
    Aorus RX580 XTR 8GB
    This, it will run faster as well.
     
  6. spajdrik

    spajdrik Ancient Guru

    Messages:
    1,957
    Likes Received:
    331
    GPU:
    GB RX 5700 Gaming


    Seems that having SMT off gives more fps in a lot of games :p
     
    Last edited: Aug 26, 2019
  7. H83

    H83 Ancient Guru

    Messages:
    2,691
    Likes Received:
    376
    GPU:
    MSI Duke GTX1080Ti
    At 150€ the 3500 would be a very interesting CPU even for gamers. Now if only AMD could release an 8 core part without SMT for 200€...
     
  8. Silva

    Silva Master Guru

    Messages:
    909
    Likes Received:
    294
    GPU:
    Asus RX560 4G
    For anyone assembling his own computer, best stick with 3600 for gaming, productivity and longevity sake.
    I'd get 3500 only if planing on upgrading to Ryzen 4000 and being on a tight budget to get other components.
     
    airbud7 likes this.
  9. kings

    kings Active Member

    Messages:
    93
    Likes Received:
    70
    GPU:
    GTX 980Ti / RX 580
    For me, the best choice still is the 2600 for 120€~130€, at least until stocks last.

    The 3600 don’t worth the extra money right now, paying ~60% more for ~15% performance!
     
  10. schmidtbag

    schmidtbag Ancient Guru

    Messages:
    4,338
    Likes Received:
    1,308
    GPU:
    HIS R9 290
    I would think that when disabling SMT, that would give it a better chance of reaching higher boost clocks, like the 3600X.

    In general, I find it a little odd AMD is still bothering to make SMT-less CPUs. I understand their approach involves more physical hardware than Intel's and therefore means that only half (or really, less than half) of a core is defective, but, if this product is a matter of binning, it seems so oddly specific that I have a hard time imagining how it is economically viable to sell, especially considering for a small price increase, you could double your thread count. So if you imagine the CPU die like this, where each core is a set of square brackets:
    Code:
    [ X] [XX] [X ] [  ]
    [ X] [XX] [X ] [  ]
    
    The Xs signify which half of the core has a physical defect. The 2 cores on the right are assumed to be perfectly fine. This would be a best-case scenario for AMD to sell a 6c/6t CPU where only 2 core halves are "needlessly" disabled. If AMD took an "all or nothing" approach, this would otherwise be a 2c/4t CPU, which obviously will sell for less money and has even more wasted silicon.
    But, what's the probability of this happening? I would think a defect that large would typically reach far enough to cripple something important, like the L2/L3 cache or fetch and decode (each of which is shared between 2 threads of a single core), where the CPU might as well be 2c/4t anyway.
    Meanwhile, let's say the defect was much smaller and looked more like this:
    Code:
    [  ] [ X] [X ] [  ]
    [  ] [ X] [X ] [  ]
    
    If AMD opts for 6c/6t, that means half of a perfectly functional CPU is needlessly crippled with 2 cores being totally disabled, even though all of them are at least partially working. In other words, more than half of that CPU is disabled to make this product, which doesn't sound all that profitable.
    The only reason that particular scenario would make sense is if their 4c/8t models sell for less money (which they could). I assume they aren't going to make an 8c/8t model.

    I'm all for reducing waste, but I'm just having a hard time understanding why AMD would put in the effort to make and market this CPU when it ostensibly isn't going to yield enough profits to be worthwhile. It's not like people were waiting for a CPU like this to exist from AMD.
     
    Last edited: Aug 26, 2019

  11. kings

    kings Active Member

    Messages:
    93
    Likes Received:
    70
    GPU:
    GTX 980Ti / RX 580
    I think it´s because the i5 9400F. Currently AMD have the R5 2600 on sale to clear stock, but this CPU will not last forever!

    The 9400F is around 150€ in most stores. Unless AMD drop about 60€ on 3600 (which I don't see them doing, because it's a recently released CPU), they would end up with a big gap and give the sub 200€ market to Intel.
     
  12. MonstroMart

    MonstroMart Master Guru

    Messages:
    533
    Likes Received:
    159
    GPU:
    ASUS GTX 1070 Strix
    The lack of "hyper-threading" could definitely be a problem. The 7600 looked good on paper when it was released but today it's struggling with the low 1% in some of the newer games. Next gen consoles should be released by the end 2020 and are rumored to have 16 threads cpu. Consoles are always the lowest common denominator used to optimize games. This means that by around 2022 some companies should start to use the full power of next gen consoles which implies using more than 4-8 threads if they want to push those consoles to their limits. Not all games of course but the ones trying to sell by pushing the hardware to its limits should. I think it's definitely worth investing to get a 3600 since it has 12 threads.
     
  13. SethNW

    SethNW New Member

    Messages:
    1
    Likes Received:
    0
    GPU:
    GeForce GTX1070 8GB
    I think it is fine as more budget oriented chip for about 150USD. Some people find it bit disappointing about lack of SMT, but since all chips have SMT enabled, I feel like AMD quickly realized they have bunch of chiplets which can't do SMT well, but otherwise work without it and they can't use them anywhere. So I believe this is merely here to improve yields. And while yes, it won't age as well, but it is budget chip. And for that price point it would either be 4 core 8 threads, if SMT was on or 6 core 6 thread with SMT off, which is what leaked. And between two, they would perform and age at about the same level. But with IPC improvements, it should still be nice alternative to replace R5 2600, if supplies run out. I mean at 150USD for CPU you are likely building 1080p 60FPS build and it should be fine for that.
     
  14. Alessio1989

    Alessio1989 Maha Guru

    Messages:
    1,345
    Likes Received:
    224
    GPU:
    .
    And what if they will add some cool red strips on the his? It will be the fastest CPU ever!
     
    Undying likes this.
  15. Clanger

    Clanger Member Guru

    Messages:
    182
    Likes Received:
    97
    GPU:
    igpu
    6 3.6/7ghz cores for around 150/60 quid? Intel equivalent is the 9600k for a lot more.
     

  16. airbud7

    airbud7 Ancient Guru

    Messages:
    7,244
    Likes Received:
    3,855
    GPU:
    pny gtx 1060 xlr8
    9600k will kill this thing @gaming....same with an 8600k

    When you lower the core count on ryzen it no longer shines.
     
    Last edited: Aug 28, 2019
  17. Clanger

    Clanger Member Guru

    Messages:
    182
    Likes Received:
    97
    GPU:
    igpu
    you have mistaken me for someone who cares.
     
  18. airbud7

    airbud7 Ancient Guru

    Messages:
    7,244
    Likes Received:
    3,855
    GPU:
    pny gtx 1060 xlr8
    ?
     
  19. Fox2232

    Fox2232 Ancient Guru

    Messages:
    9,677
    Likes Received:
    2,157
    GPU:
    5700XT+AW@240Hz
    Looks like 2~10% fps difference. So, disabling SMT puts those chips on intel's performance spot since their numbers indicate such difference.
    Seems like scheduling sometimes puts second load on core that can't immediately be executed.

    May be solved by windows in time or by Zen 3 since that is likely to have SMT4 on servers and therefore desktops with SMT2 enabled will benefit from architecture that has enough improvements to extract something meaningful from SMT4.
     
  20. Undying

    Undying Ancient Guru

    Messages:
    11,573
    Likes Received:
    1,351
    GPU:
    Aorus RX580 XTR 8GB
    9600k costs more than 3600. There ia no real value there.
     

Share This Page