Author Topic: Threadripper Builds  (Read 131550 times)

2019-08-01, 12:11:12
Reply #510

nkilar

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Sir dude, I didn't want to ruffle any feathers here at all, I merely pointed out that there is an ongoing discourse about the x4 - x8 - x16 scaling especially with heavier scenes and that its not quite as trivial - Especially so if you bring NVLink into the debate.

Not sure if its this article or another but one of them also states that the Octane scenes are small and easy to render - hence it _probably_ doesn't scale as much. The Redshift scene is bigger and as such a more realistic representation if you are working with non trivial scenes size wise. The difference there between x4 and x16 is about 9% (without the load times).

That being said one could say we are looking at a non-production scene still because it is designed to fit into common gpus out there.

They also do not take into the account the load times. Say you have a VRAM pool of 11GB that you want to fill up on an x4 connection - Extra differences there.

All that being said you then need to take into the account the whole NVLink thing - if you plan on using it at all. There is a strong chance that with x4 you just won't be able to run NVLink on that second pair.

Like, if you are serious about GPU rendering so much that you'll buy 4 GPUs, I personally would make sure they try running at x8 at least. Depends on the usage case but really the point of my post was to not totally dismiss the impact of PCI-E lane speeds.

Hopefully this back and forth shed some light for people so that they can come to their own conclusions with a little bit more information. I really don't see a problem here personally.

2019-08-01, 15:20:07
Reply #511

cjwidd

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I'm sorry, naive (dumb) question, but the last several comments (above) have mentioned upgrading CPUs. I was under the impression that upgrading CPUs is a cumbersome prospect, i.e. not as simple as swapping a video card because CPUs have to be mounted with thermal paste, etc.

Is this what is implied when someone mentions upgrading to 2990WX/3xxx series?

2019-08-01, 18:44:16
Reply #512

JoeVallard

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I keep seeing this a lot with how Ryzen 3000 is a lot cheaper than Threadripper. The Threadripper platform isn't new, 1st gen cpus are on sale all the time and even 2nd gen ones you can snag for a good price if you keep an eye out. I just paid the same price as a 3900x for a 2950x. The x399 Taichi i picked up for $200 a few months back (from what ive seen the x570 boards in this price range are just meh). Last month the 2770wx was on sale at microcenter for $700 (cheaper than the 3950x will be). Even the Mobos Juraj recommends have $100-300 off sales.

With Threadripper you have room to upgrade to a wider selection of cpus. With Ryzen 3000, you'll have the 3950x later this year. Maybe Zen 2+ might add a few cores. I think a safe assumption that Threadripper 3000 will start with 24-36 cores and if it has the same IPC increase that Ryzen 2000 to 3000 has, even without a core count upgrade, 24-36 core Threadrippers will be extremely nice to have.

The 1950x is a really good bargain right now as it has dropped down to $330-$399 a few times lately. With a higher end x399 board you will still have plenty of room to grow. As Juraj said you will probably need one of the better boards to run anything that Threadripper 3 will offer though.

Threadripper absolutely needs 2933MHz (CL14-CL16).

A question about RAM i've been looking for 4x16 kits (64gb) and everything in the CL 14-15 range is either sold out or $1000. I currently have CL16 32GB kit in and the same memory is on sale for $174. Is CL14-15 worth it for the large price increase?  I used the DRAM calculator and it did increase my Cinebench R20 score fairly well, but only shaved off a couple seconds on the Corona Bench.

The RTX 2060 Super has 8GBs for VRAM as well. The only RTX card that doesnt have 8GB of Vram or more is the normal RTX 2060.

2019-08-05, 10:06:13
Reply #513

maru

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If anyone is interested, Threadripper prices dropped again. You can now get an 1920x for as low as ~250 € - https://www.amazon.de/gp/product/B074CBJHCT

2019-08-05, 11:37:08
Reply #514

Jpjapers

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If anyone is interested, Threadripper prices dropped again. You can now get an 1920x for as low as ~250 € - https://www.amazon.de/gp/product/B074CBJHCT

With the 1950x being priced so low too its actually a fairly compelling reason to upgrade given you could have a 16 core machine complete from the ground up for sub £1500.

2019-08-05, 18:30:47
Reply #515

Juraj Talcik

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Is CL14-15 worth it for the large price increase?


If the memory is expensive, it's never worth it. And 64GB CL15 kit, still has to be run at CL16 if the compatibility proves to be problematic, and 100perc. CL16 if it's 128GB kit from identical modules. Actual experience of mine.

But is it so expensive where you are ? I've bought Corsair LPX 64(4x16) 3000 CL15 for 300 Euro recently (final price with VAT from Amazon.de), and I've already seen few sellings for 250 Euros. 1000 ? Are you looking at obscure b-die G-Skill sets ?


I'm sorry, naive (dumb) question, but the last several comments (above) have mentioned upgrading CPUs. I was under the impression that upgrading CPUs is a cumbersome prospect, i.e. not as simple as swapping a video card because CPUs have to be mounted with thermal paste, etc.

Is this what is implied when someone mentions upgrading to 2990WX/3xxx series?

You have to un-mount Cooler, remove CPU, put new CPU in, apply paste, attach cooler again but that's it :- ). That's reasonably easy, can be done under 5 minutes with some practice.
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2019-08-05, 21:36:27
Reply #516

JoeVallard

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If the memory is expensive, it's never worth it. And 64GB CL15 kit, still has to be run at CL16 if the compatibility proves to be problematic, and 100perc. CL16 if it's 128GB kit from identical modules. Actual experience of mine.

But is it so expensive where you are ? I've bought Corsair LPX 64(4x16) 3000 CL15 for 300 Euro recently (final price with VAT from Amazon.de), and I've already seen few sellings for 250 Euros. 1000 ? Are you looking at obscure b-die G-Skill sets ?

I'm in the US and just the price diferences on memory for minor differences like RGB and no RGB can be up to $80
The kit you mention CL15 3000 (Corsair RGB one) is around $329. Its the CL14 3200 kits that are way up there in price 700+.
Looks like a choice between 2.

CORSAIR Vengeance 3000 CL15  64(4x16) = $329
or
G.SKILL TridentZ 3200 CL15 64(4x16) = $456

I don't imagine the 200mhz speed is worth the price difference. Both are RGB kits as well =/

2019-08-05, 21:53:00
Reply #517

Juraj Talcik

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I think the chance you will be able to run 3200 @CL15 for 4x16GB is very small. Maybe you can make it stable, maybe not, not worth the hassle. Just get 3000.

I use 2x64B Corsair RBG Pro on Veronika's 2990WX. Both 3000 CL15. In 128GB Configuration, it's stable only on CL16, otherwise it will blue-screen during intensive tasks in Corona. Exactly as advertised.
I know the guys like 1Usmus on overclockers.co.uk run everything much tigher but they just run syntetic tests all day, zero intensive work.
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2019-08-06, 21:23:30
Reply #518

philipb

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Been a while since i popped in for a read... Ill have to see what has been going on.

Just wanted to report that my Enermax TR4 360 AIO (gen 2-rev 1?) crapped out after about 7-8 months. So, i guess as expected.

Idle temps went from 35C to 57C. Both fans working fine so must be a pump/corrosion/gunk issue as has been reported many times.
« Last Edit: 2019-08-07, 07:04:57 by philipb »

2019-08-07, 11:51:22
Reply #519

Juraj Talcik

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Been a while since i popped in for a read... Ill have to see what has been going on.

Just wanted to report that my Enermax TR4 360 AIO (gen 2-rev 1?) crapped out after about 7-8 months. So, i guess as expected.

Idle temps went from 35C to 57C. Both fans working fine so must be a pump/corrosion/gunk issue as has been reported many times.

Do you have the RGB ('II' Mark model, revision is never written, only based on serial code) version ?

Ah jeez, this absolutely sucks. Still better than leaking but waiting for warranty and replacement..

I am lucky I have a friend who does service to my custom loops, and I can tell you it took two full days (16 hours +/-) to completely disasemble and clean everything, put it back, test it. So Full loop is not for those with weak stomach either.

At this point I just believe no water belongs to serious workstation if you don't need absolute silence. Just get U14S TR4, and when in few months D15 TR4 comes to market, sell the U14, replace, and live happily after. D15 and good airflow will be more than enough for Zen2 CPUs.
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2019-08-07, 18:42:26
Reply #520

philipb

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Yes, its the MKII RGB version. Worked great at first. When it was working well I was very impressed with the performance. It got excellent results with both Vray and Corona bench.

I'm dealing with Enermax RMA in north america and they are sending out a replacement. Hopefully they have resolved the issue.




2019-08-08, 14:13:02
Reply #521

nkilar

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Only slightly related to the Threadripper series but the new Zen 2 Epyc CPUs are out and they are something else for... pretty much everything. AMD really did something special here.

Phoronix (Linux) rendering tests -> https://www.phoronix.com/scan.php?page=article&item=amd-epyc-7502-7742&num=7
Anandtech Early Review -> https://www.anandtech.com/show/14694/amd-rome-epyc-2nd-gen/15

[SPOILER] If I may quote Anandtech's conclusion "At the high end with socketed x86 CPUs, AMD offers you up to 50 to 100% higher performance while offering a 40% lower price".

Now let's think about how a potential 64 Threadripper would perform :)

2019-08-08, 14:22:09
Reply #522

Juraj Talcik

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That is epic indeed.
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2019-08-14, 20:04:32
Reply #523

JoeVallard

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https://www.tomshardware.com/news/amd-threadripper-3000-castle-peak-32-core-cpu,40151.html

Hopefully this means we will start seeing some more info leak out about Threadripper 3000 and get some info when they will actually release.

2019-08-14, 20:08:06
Reply #524

Jpjapers

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Any reason youre favouring the enermax over the Noctua TR4 Cooler?