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Which CPU Would You Get To Compliment Two RTX 2080 TI's

mechengineer97mechengineer97 Posts: 116
edited April 2019 in The Commons

Hey guys so I was getting ready to pull the trigger on a new build to replace a 4 yr old i7 5930k 3x gtx970 rig

 

Just not sure which CPU to get to compliment 2 RTX 2080ti's.  I was leaning towards the 1950x (on sale for $809 Canadian) since it' almost $400 cheaper than the 2950x ($1200).  But seeing Daz doesn't benefit from number of cores, kind of looking at the i9 9900k.  Gonna use it for both Daz and 4K gaming.

Additional Info

should mention the old machine and the new machine will be used in tandem to address several issues. 

All videos are for my job as a virtual prototype engineer (which is a testiment to Daz Studio's rendering quaility), and they have really started to take longer and longer to create because they're getting more and more elaborate.  To compensate, I've had to reduce quality substantially in the number of iterations.  But even with these measures, rendering times are still like 30 to 40 minutes.  But with a new rig, I can dedicate one to just render and the other to continue working in Daz instead of just waiting for the render to complete.  This will also mean I won't have to sacrifice image quaility and even improve it.

Bottomline is, I need to get a new rig to compliment the old one.  Using it for 4k gaming, is just a bonus. 

Post edited by mechengineer97 on

Comments

  • JVRendererJVRenderer Posts: 664

    It looks like you've already made your choice : Core i9 9900k.

  • shaneseymourstudioshaneseymourstudio Posts: 383
    edited April 2019
    mechengineer97 said:

    Hey guys so I was getting ready to pull the trigger on a new build to replace a 4 yr old i7 5930k 3x gtx970 rig

     

    Just not sure which CPU to get to compliment 2 RTX 2080ti's.  I was leaning towards the 1950x (on sale for $809 Canadian) since it' almost $400 cheaper than the 2950x ($1200).  But seeing Daz doesn't benefit from number of cores, kind of looking at the i9 9900k.  Gonna use it for both Daz and 4K gaming.

    I am purchasing cpu/mobo this weekend to go with my 2080tis and originally was going with a 9900k but decided to go with the much cheaper ryzen 2700x. Using pcpartpicker I have the cpu just under 300 and mobo 149 after 20 mir (z470). I looked at several articles and rigs performance in rendering as well as a few youtube vids, one mainly Jayztwocents, where he compared the 9900k and ryzen 2700x and that sold me. For DAZ it seems to be more than enough. 9900k is a great chip no doubt and much better thermals than the 8700k so you wont go wrong with it, especially if you tend to keep a rig for 5 or more years. I just wanted to put my money more on ram than the cpu since ryzen has such a competitive option. EDIT: Also the 2700x comes with a good wraith cooler so that will save you some money if you are not trying to heavily oc it.
    Post edited by shaneseymourstudio on
  • JamesJABJamesJAB Posts: 1,766
    edited April 2019

    Honestly, I would not upgrade your CPU.  Even though your are a few generations back, your current one tics all of the checkboxes for a high end computer.
    1. 6 cores / 12 threads
    2. 3.5 GHz base clock
    3. Quad channel DDR4 architecture (4 channel 68.0 GB/s max)
    4. 64GB max ram (I'm guessing your motherboard has 8 slots for RAM)
    5. 40 PCI-e lanes

    Intel CPU architecture has not changed much in the last 5 years aside from adding more cores.
    In Daz Studio the GPU, VRAM, System RAM, and HDD speed make the biggest impact. For gaming your best AMD upgrade would be the 8 core Ryzen 7 2700X, though your current CPU will still pair nicely with the RTX 2080 ti.

    I would look at getting a RTX NVlink, more RAM, a fast SSD for your windows drive, and a new power supply instead of a new CPU and motherboard (Threadripper and i9 motherboards are not cheap)

    ***Edit***
    Just looked at the specs on the i9 9900k.0
    No, I would not reccomend that as an upgrade from your current machine.
    Pros: 
    --Faster Boost clock,
    --2 more cores, lower power usage
    --128GB max ram... (if you want to buy massively expensinve 32GB sticks)
    Cons:
    --Slower RAM (2 channel 41.6 GB/s max)
    --16 PCI-e lanes  (Best case with no other cards installed each of your 2080 ti cads would be forced down to 8x mode)

    Post edited by JamesJAB on
  • joseftjoseft Posts: 310
    edited April 2019

    As JamesJAB has mentioned above, i would be leaving your CPU alone if you cant go with something better than a 9900k. Your current CPU is the same CPU i am running, and i run 3x GPUs. So long as your current motherboard also has 2x PCI3 x16 slots, then i think your current plan is a waste of money. Just get the 2080ti's and plug them straight in to your existing rig.

    Others may jump in here to point out that PCI lanes on your CPU limiting your PCI slots on your motherboard down to x8 have no effect on rendering performance, and that is generally agreed to be true. However you also want to game in 4k, and this is where you want to have your PCI slots running at x16

    Post edited by joseft on
  • mechengineer97mechengineer97 Posts: 116

    Crap, should have mentioned the old machine and the new machine will be used in tandem to address several issues. 

    All videos are for my job as a virtual prototype engineer (which is a testiment to Daz Studio's rendering quaility), and they have really started to take longer and longer to create because they're getting more and more elaborate.  To compensate, I've had to reduce quality substantially in the number of iterations.  But even with these measures, rendering times are still like 30 to 40 minutes.  But with a new rig, I can dedicate one to just render and the other to continue working in Daz instead of just waiting for the render to complete.  This will also mean I won't have to sacrifice image quaility and even improve it.

    Bottomline is, I need to get a new rig to compliment the old one.  Using it for 4k gaming, is just a bonus. 

     

  • ArtAngelArtAngel Posts: 1,942
    mechengineer97 said:

    Crap, should have mentioned the old machine and the new machine will be used in tandem to address several issues. 

    All videos are for my job as a virtual prototype engineer (which is a testiment to Daz Studio's rendering quaility), and they have really started to take longer and longer to create because they're getting more and more elaborate.  To compensate, I've had to reduce quality substantially in the number of iterations.  But even with these measures, rendering times are still like 30 to 40 minutes.  But with a new rig, I can dedicate one to just render and the other to continue working in Daz instead of just waiting for the render to complete.  This will also mean I won't have to sacrifice image quaility and even improve it.

    Bottomline is, I need to get a new rig to compliment the old one.  Using it for 4k gaming, is just a bonus. 

     

    I made videos on an old Pc no problem. I had two new ones custom built. Newbie one has 64K ram and 2 1080tis and Newbie 2 has two titan pascal x and 128 Ram. The two new ones crash while rendering. So I suspect the program is built forthe masses and most people don't have monster machines. But if you do decide to upgrage your cards, be sure to upgrade your power supply.

  • outrider42outrider42 Posts: 3,679
    I wouldn't worry about SLI for gaming, either. Most games do not support it, and only a few of those support it well. Most games are pretty much single GPU.

    Hoever, Nvlink is capable of pooling VRAM, but nobody has been able to prove this with Daz Iray. Plus I don't think any GPU monitoring app correctly reports available VRAM from Nvlink mode, which adds to the confusion. The only way to prove it is to make a scene that would exceed a single 2080ti VRAM and test it.
  • kenshaw011267kenshaw011267 Posts: 3,805

    the 9900k is grossly overpriced unless you are going to overclock or you're a professional gamer and need every last FPS. The R7 2700, or wait a few weeks and the get the new Ryzens that should release then, is a far better chip for productivity and will handle gaming just fine, you might lose a few frames at 1080 but at 4k the GPU is the limiting factor not the CPU.

    Also don't bother with SLI unless you really know what you're doing. It takes endless fiddling to get even games designed for it to work properly and the number of games that support it keeps dwindling.

  • Midnight_storiesMidnight_stories Posts: 4,112

    Remember you don't get any faster time with Iray as it's a GPU render, 3Delight with speed up a lot. I've got one of the i9 CPU and I had to bring the overcloaking down due to over heating but blender flies because uses both properly !

  • Matt_CastleMatt_Castle Posts: 3,010

    Compliment? One with good upbringing and a taste for powerful hardware, I guess.

    Complement? Well, as others have said, CPU only really has impact on an Iray render if the GPUs run out of VRAM and it has to be dropped to CPU (and at that point it's going to be pretty slow whatever)... and when it comes to gaming, well, there's a tendency for many modern games to support multiple threads more than per-thread performance these days.

    It used to be that hyperthreading and the like was fairly useless for gaming if it meant more than four threads total, but games are tending to be optimised far more for the multi-core, multi-thread CPUs that are the new direction for performance (given that advancements in single thread performance are slowing down somewhat).
     

  • VisuimagVisuimag Posts: 578
    edited April 2019

    Eh, I'd still get both cards. For Studio, you can turn it off and use both independently (though I've been using SLI with Studio for years, over multiple Titan generations, and have never had any problems). Plus, the overhead I get from games that do support the tech (while not always perfect) is still fine.

    Your CPU, well, you can't go wrong with a proc like the 9900K. It will do less for Iray rendering, however.

    Post edited by Visuimag on
  • bk007dragonbk007dragon Posts: 113
    Daz does not make use of extra cores for iray. I am running an i7 8700 and it runs it very well. As others have said, you cpu is likely fine. Nvlink is not needed for daz. For gaming intel is the better cpu.
  • tj_1ca9500btj_1ca9500b Posts: 2,057

    Just want to point out that Daz does make use of cores in Iray occasionally.  Namely, if your render goes to CPU only due to the scene being too big for the VRAM.  That being said, at that point, you are probably better off optimizing your scene to squeeze it into the VRAM, but sometimes you may just let it run anyways, say if you are off to the grocery store or something, and don't mind letting the render run anyways.

    That being said, yeah if you can hold off on the new CPU for a couple of months, well AMD will be announcing the 7nm CPU lineup at the end of May.  Lots of rumors are flying around at the moment, such as a 16 core 7nm Ryzen, 40 PCIe lanes, 15% better IPC, 4.5GHz... We don't really know though, but if you can make do for a bit, yeah Computex is at the end of May, so it's not that far off.

    Of course, then you'll have to wait for some stuff to hit the retail market after the announcements, so it may be a couple of months from now before the 5xx boards and the 7nm CPUs hit the market, but we may see more price drops on the 12nm stuff around that time as well. 

    If you need to move now, though, I'd still suggest Threadripper.  Not so much for the cores as for the PCIe lanes and such.  With the right motherboard you could upgrade to 4 GPUs eventually, all running at x8 or better.  You don't really need more than x8 for rendering - the benches only lose 1-2% between x16 and x8 for rendering, so a third graphics card dramatically offsets that tiny performance loss.  IMHO more than 4 cards is overkill - at that point you've already cut your render times to a quarter, dropping them to a fifth isn't much of a gain at all, diminishing returns and all that.

    And if you grab a board with 3 NVME slots, well that's just more room for upgradeability later.

    Another option might be to build a cheap system now, until the 7nm Threadrippers drop, sometime in the fall.  We don't know much about those yet, but the 7nm EPYCs are looking quite good right now, and Threadripper has been based on EPYC up to this point.  I'm thinking more about the new Threadripper motherboards though, and what they may bring to the table.  As pointed out, lots of cores aren't very helpful in Iray when doing an Iray GPU render.  But for the 3Delight folks, that's another story.

    Anyways, food for thought.  Lots of stuff will be announced at Computex, from all three teams (Blue, Green, Red), and who knows, maybe we might even see a mini price war around that time as Blue and Green seek to maintain their dominance over Team Red's new offerings...

  • nicsttnicstt Posts: 11,715

    AMD Threadripper. I certainly like mine.

  • LenioTGLenioTG Posts: 2,118

    I'd wait for the new AMD lineup.

    Since you're going to game at 4K, I doubt a little bit of more single core performance from Intel chips would make a difference.

    For renders you can always use your CPU too, for a small boost.
    And Ryzen usually have many more PCI lanes. If it's true that once the scene is loaded on your GPU it doesn't matter that much, I still guess you're going to see a difference.

    Of course, they cost much less, and they have cross-generation compatibility. This also means you should be able to sell them better at the end of their life cycle, because there will be more compatible used mobos around.

  • mechengineer97mechengineer97 Posts: 116
    edited May 2019

    So for the time being, just got a second Gigabyte 2080 TI Gaming OC edition last night just to speed up renders.  (sorry forgot to mention I already had a 2080 ti).  Benchmarks using Sickyield/s scene are below.

     

    2 x Gigabyte 2080 TI Gaming OC edition

    Optix prime acceleration on

    GPU's only rendering time = 33 sec

    2 x GTX 970, Gigabyte 2080 TI Gaming OC edition

    Optix prime acceleration on

    GPU's only rendering time = 49 sec

    i7 5930K, Asus X99 Deluxe, 1 x GTX 970, Gigabyte 2080 TI Gaming OC

    Optix prime acceleration on

    GPU's only rendering time = 54 sec

    i7 5930K, Asus X99 Deluxe,  Gigabyte 2080 TI Gaming OC

    Optix prime acceleration on

    GPU only rendering time = 1 min 5 sec

    Post edited by mechengineer97 on
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