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Messages - philipb

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1
Hardware / Re: Threadripper 2990WX
« on: 2019-02-14, 22:05:44 »

With the new 'PBO system' its not really overclocking like it used to be, don't think there are any stability issues to worry about anymore. You just turn it on, and it will find the thermal capability of your cooling (enermax is good!) and take it up to that thermal limit safe and stable.

Honestly, if you don't turn on PBO you are just leaving money/power on the table. For the price you paid and the performance these chips are capable of getting an extra 15-20% out of your 2990WX is really not something you should pass up.

Check it out. You just get ryzen master and set the power limit, maybe 400-450 W. That's all. Thought you may need to point a fan at your VRM. I have a cheap ASUS 399-e board (got a deal) and since pointing a fan at the VRM I haven't had any issues running at 3.5-3.8 Ghz.


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Hardware / Re: Threadripper 2990WX
« on: 2019-02-12, 19:03:25 »
So i think i'm at a point with my prospective spec i'm happy with.
Anyone seeing any issues or bottlenecks? Id maybe look at faster ram if the price wasn't too much of an increase.


RM850X PSU
Samsung Evo 970 500GB boot drive
64GB Corsair Vengeance 2666mhz RAM
Threadripper 2990wx
Enermax Liqtech TR4 360mm
AORUS X399 Xtreme
RTX 2070
Fractal define R6 Case + 3x additional 140mm fans

1) Isn't 850W cutting it close for a 2990WX build???

The processor can draw 500W, add the GPU and other stuff and you must be pushing 800W or close already.  If you ever plan on adding a second GPU or anything you may not have enough juice. But then it all depends on if you are overclocking, which you should be for sure with the Enermax. I'm happy with the new Enermax revision, it can do consistent 3.8ghz with PBO @ 475W or so.

2) Also, this video scared me off the Aorus...

t

3) Ram speed does make a difference...if you can get faster ram then do.

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Hardware / Re: Threadripper 2990WX
« on: 2019-01-26, 02:41:57 »
How did someone get 37 secs bench time.  I have a 2990wx or to 4.0 with 32 go ram and I had a score of 1:12. What am I doing wrong?


I can get 37-39 seconds at 3.8ghz...3200 on memory.

You got 4 DIMM's??? Running quad channel memory? I noticed in my initial testing during the build that having 4 DIMMs (i.e. running quad channel) made a huge difference... Also ram speed makes a difference. Even going from 3200 to 3400 I got a second or two improvement, but can't get anything over 3200 stable.

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Hardware / Re: Threadripper 2990WX
« on: 2019-01-03, 23:43:52 »
https://www.hardocp.com/news/2019/01/03/amd_ryzen_threadripper_2990wx_performance_regressions_linked_to_windows_bug

https://bitsum.com/portfolio/coreprio/

For slovak / czech speakers https://www.svethardware.cz/chaby-vykon-threadripperu-2990wx-byl-identifikovan-jako-dusledek-chyby-v-kernelu-windows/48337

Seems to slow down Corona benchmark by 2 seconds for me. Doesn't appear to have any impact on Vray benchmark. May still be a good idea to run, either way, to ensure that dynamic local mode is running as a permanent service. For 7-zip there is apparently some benefit.

Anyone else loses a second or two with corona bench?

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Hardware / Re: Threadripper 2990WX
« on: 2018-12-17, 22:31:01 »
Don't panic :- ). Common mosfets (even average quality ones) are rated for 120C. But lot of circuits around can start to deteroriate at roughly 105C. I see you often pass this peak.

VRM is often poorly cooled by even the best airflow, which is why people come up with all sorts of hacks by trying to point a fan directly onto the VRM. It makes a bit of chaos in overall airflow but can help the temps up to 20C.

Regarding my VRM temps I think I would have to measure it again at different voltages. I really didn't touch that PC at all since I gave it to Veronika. I think they never went above 80.

Definitely try to get some fan pointed at the VRMs. People with Aorus often do so and they have 10 phases for the CPU (versus 8), better heatsink, and most people in this thread under-volted.

Btw, if the noise from Enermax feels annoying, you can swap the native fans for Noctua Sterrox (NF-A12x25). I know it's not budget solution but they're state of art in terms of airflow/accoustics.

Okay, yes I have calmed down.

Running Corona the VRM seems to stay under 95C with a fan pointed at them. If Vray also stays under 100C (haven't tested yet) then I will likely keep the ROG STRIX board. Im also having an issue where the PC wont wake from sleep using AUS PBO, but if I use Ryzen-master it does. Ill see if i can get that fixed. If not i might consider another board.

Yes, Ill definitely change over to Noctua fans, as these Enermax ones are loud. That being said the Enermax gen.2 seems to be very good. Hopefully, they have worked out all the problems and it won't quickly fail like the Gen.1 versions.

6
Hardware / Re: Threadripper 2990WX
« on: 2018-12-14, 07:22:51 »
VRM thermal issues... Time to rethink the ASUS ROG STRIX. Should have listened to Juraj.

I have received my Enermax TR4 Gen.2 360. This was an upgrade from my gen.1 280. It let me push the PBO to overclock a good bit further. However, after putting everything in the case (R6) I can see that the thermals on the VRM will be unsustainable.

Testing with prime-95 blend (which goes up and down in terms of stress) the VRM temps are touching 100C, with a 120mm fan 2 inches away blasting at 100%, shit. Running blend the temps get to 103, and are often in the high 80s to low 90s. FTT testing takes the temps to over 100C within 10 min, again with the same fan setup...crazy! Running corona the temp levels out at 94-95C around 30 min, don't think that's sustainable, is it? And its, loud, of course.

I'm attaching a graph, it shows a longer Blend run in prime 95, and then a short FFT run after a period to let everything cool off. It shows the problem very clearly. The performance is great, but the VRM is a disaster.

Juraj, I'm curious what the VRM thermals are like on the MEG? Now that I have a better AIO the VRM are showing themselves to be the weak link. I can still return the ASUS, and given the cash I already have in this system it seems a few hundred more for stability and maximized performance would be worth the tradeoff.

Damnit, I guess its time to tear this thing apart for now.




7
Hardware / Re: Threadripper 2990WX
« on: 2018-12-12, 20:32:54 »
Is it overkill if i dont plan on overclocking?

Juraj said it...but think of it this way.

Its not really overclocking anymore....these new CPUs are capable of automatic all core turbo boost. Overclocking used to be a project in itself, now its a feature.

  If you don't use it you are just leaving performance on the table, rotting fruit on the vine. The real question is, how much do you want to spend on cooling, and that breaks down into a performance/noise/cost trade-off.

In other words....just do it!

8
Hardware / Re: Threadripper 2990WX
« on: 2018-12-10, 18:36:17 »

Are there any better cooling solutions i should be considering?

It's been mentioned here a few times... The Enermax Liqhtec tr4 gen.2

You can see the Gen.1 performance advantage here. The issue was that gen.1 had all kind of problems that would lead to failure...
https://www.gamersnexus.net/guides/3089-threadripper-cooler-comparison-full-coverage-liquid-vs-air

Supposedly, the current (there were maybe even problems with the first batch of gen.2) Liqtech TR4's have all the issues resolved. I'm taking the gamble as the performance is clearly good. I have a gen.1 280 that is still working fine after 9months and its good stuff. But I will RMA it for a new Gen.2 just to be safe.

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Hardware / Re: Threadripper 2990WX
« on: 2018-12-05, 04:40:42 »
I 'm  using Noctua NH u14s with double mounted fan to cool my system.
I' m curious about other idle and "loaded" temps with  solutions like wraithripper, enermax, or custom.

my Tdies are :  idle 28-29 C  and loaded 48-49 C . Room temp is 20 C.

Have you turned on PBO, AMD's automatic overclocking?

If your temps aren't 68C at Load then you are leaving a good deal of performance on the table. PBO should overclock your CPU until it hits its thermal limit at 68C. On ASUS boards this feature is called performance enhancement in the BIOS. Not sure what its called for other boards. But maybe you are holding back for noise, or VRM overheat?

There are comparisons out there. Google around. From what I saw Wraith and Noctua are neck and neck, the silver arrow is a bit better, and Enermax is the winner, maybe by 6-10C over Noctua. But there have been lots of problems with the Liqtech rev.1, huge fail rate, and some leaking. Rev.2 maybe be better, but the jury is still out.

On a personal note, I have been waiting like 5 business days for a proper RMA response from Enermax. Just terrible. Unfortunately, they are the only game in town right now on the AIO side.


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Hardware / Re: Threadripper 2990WX
« on: 2018-12-02, 23:00:30 »
First things first. Question, is everyone respecting the 68C thermal limit with their manual clocks? I haven't seen anyone recommend going above it. Also, are people undervolting their PBO? Im on ASUS and using the offset to under volt the PBO with - 0.1 CV.


Okay, got my 'cheap' setup going.

ROG Strix 399-e
2990wx
64GB Corsair LP 3200
Enermax Tr4 280 (I know, I know. Actually got it used from Kijiji, its now 9 months old and no issues. Ill RMA it and get the gen 2 asap)
Evo 970

Testing on an open-air bench, with a Quadro 600 until its time to swap out as my main workstation.

For now, can get 37 seconds on Corona Bench and 23-24 on Vray. Playing with both PBO and Manual clock. With PBO the board Throttles at 68C of course and ends up dropping from the initial 3.8 (the max all core PBO from a cool starting point) to anywhere from 3.5-2.9 depending on the task. Corona and Vray benchmarks tend to average around 3.4-3.25. Prime 95 FFT test sends it right down to 2.9-3.0, while the blend test results in 3.4-3.5.  I can get similar performance from a manual OC, but it runs a bit hotter than the 68C recommended, requiring 1.145 CV to maintain a stable-ish 3.7. For now, I'll take the PBO result and be happy with that.

Some observations...
-Strix board seems to be doing fine so far. VRM has gone up to 76C (open bench of course). Power delivery has been adequate for what I'm doing. It's definitely not a limiting factor at this level of Performance/thermal limit. That being said, I need to do longer term testing. I remember seeing someone with a MEG board say they were getting stable 3.8 Manual with 1.1 CV. definitely need much more here, 1.14-1.15 to get close to stable, and then my cooling becomes an issue..

- Enermax is doing a decent job. hope it doesn't explode. When I RMA the gen 1 for gen 2 ill see if I can upgrade to 360.

- I like this new type of Overclocking. The thermal limit is set and the MOBO does all the work. That's a step forward. Long as the board isn't shit (and mine might be) if you want better performance, just buy better cooling.

11
Hardware / Re: Threadripper 2990WX
« on: 2018-11-27, 19:49:48 »

Yeah, that's the thing, I got a smoking deal on it. All the high-end boards are around 600 in Canada, and none went on sale for black Friday. I'm talking the zenith, the MEG etc. I got the Strix for around 300, so half that.  If the Strix and the Zenith essentially have the same power delivery then I'll likely take my chances with the Strix. If I'm reading your comments right, it's clearly inferior to a top-shelf board but will still work.

I'm not looking to hit 4.1 OC or something. If I can hit a stable 3.6-3.8 that will be more than good enough. I'm only considering Enermax or Noctua for cooling. Based on the DeBauer graph that's under 300W so hopefully will be workable with the Strix.

I mean, I have the cash for a better board, but not sure if I'll get any benefit from it. Higher OC's look like they need serious cooling and I'm not considering going that route, so a board that gets me to that 3.6-3.8 range should be fine. But then, maybe I am being optimistic.

PS. Juraj, are all the issues with the MEG cleared up? Running solid with public BIOS? Also, appreciate getting your input. Thanks.


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Hardware / Re: Threadripper 2990WX
« on: 2018-11-26, 21:07:28 »
Am I an idiot for thinking I can build a setup based on Asus ROG Srtix 399X?

I don't know enough about power delivery, phases ect to evaluate the question.  I am hoping for a mild overclock, maybe 3.7-3.8 which seems doable without going to crazy power draw. Looking at the DeBauer OC guide for reference. The Strix has an 8pin+4pin power, while the Zenith has 8+8pin. But, apparently both have 8 power phases? Please feel free to correct me, I'm not even sure what the power phases imply exactly.

Really hoping Enermax get their shit together, would be nice to just buy a 360 from them and get decent cooling. Here in Canada all the stock is gone on Amazon, so hopefully, the old revisions have been removed and new stock will be improved. Maybe not though.

Looking forward to your thoughts...definitely starting to get anxious about this build reding through this thread.






13
Dubcat!!!

Just looking back over this thread and ran across this:

"And this is how you create the Specular and Albedo texture.
I say 100-50% here, this depends on your filter. Only the ratio matters.
Here is my Layer stack (Linear 32bit)

When you shoot cross polarization, you get two pictures.
One with 50% Albedo and one with 100% Specular and 50% Albedo"

Can you explain the 50% albedo issue? When I do X-pol I tend not to extract a spec pass and just end up making bump/spec from the Albedo. But when i X-Pol capture my Albedo i expose as close as possible to the ColorChecker values and then bring them in line 100% with curves. Do you see a problem with this? Also, what is the significance of the 32bit space here?

PS. also, as we discussed before, in terms of getting a liner/flat RAW, I have found a great free open source, raw developer...... It's called Rawtherapee. It has a flat default which does not add any toning and so is perfect for developing textures from.RAW. I would highly recommend it to anyone looking to develop their own textures. It accepts custom camera color calibration (ala adobe dng profile), and lens correction profiles. It is really fantastic and is my go-to texture-from-raw tool.



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Just need a quick reality check here.....

At the end of the day this is really just a discussion about tonemapping, right? (excluding all the comping discussion)

Just the idea that an HDR/32 bit linear render benefits from some form of tone mapping before being passed to the Srgb display transformation?   I know it can get deeper than that, but at its essence that is what all this is essentially about, and all the hubbub from that blender guru guy?




15

Hey Dubcat, thanks for the detailed reply.

You are 100% right. Its the raw decoding that introduces the contrast I have been fighting against. I have been starting from Adobe standard camera calibration in ACR. This has not been a great starting point, I now realize.

3D LUTs  logC starting point got me thinking..... I understand that log is used to shoot 'flat' for video guys and preserve maximum dynamic range ('Flat' = 'linear'). So really what is needed is a flat starting point.

Being to cheap to purchase 3DLUT for the moment (thought it looks like the perfect tool for processing texture) I looked into a few other options. Here is what i found.

1)dcraw...your suggestion....definitely gave me a much flatter starting point. Great! In fact after setting my white and black point (243/52) all the other patches were pretty much in the right places. First time I've seen that.  Also interestingly, using dcraw i got like 30 extra pixels of resolution out of my sensor, hilarious, I guess Nikon feels these edge pixels are not fit for consumption.

Ill look into this further....but i must say that the lack of  GUI is a bit of a bummer...hey, do you remember what settings you were using by chance?

2)LOG vision camera profile for ACR. Its essentially a very flat conversion. Perhaps to flat. Also looking at the histogram its almost as though something has been clipped. If I try to stretch the black and white points to the edges of the histogram its like the data hits an invisible wall. Also i found the colors to be a little off. have to do more playing here. Maybe be an option, but may also have problems.

3) Nikon NX capture 'flat' profile......after stumbling across something about Nikon's flat profile online i decided to download their free raw developer.....Paydirt! thought this software is a horrendous piece of crap, the initial conversion using the flat profile is pretty damn good. From there I can export to tif and keep going. This gives me the best colors and results I think. This will likely be my new texture workflow.

Ill post a comparison of the three images when I get a chance..........Just wanted to follow up and share what id found.....of course 3dLUT is clearly the way to go, but for now im definitely getting a much better initial conversion. Wonder If I can convert with flat then create a color matrix profile with adobe DNG editor to apply back to the tifs in ACR....haven't tried that yet....will post back

PS. I don't know if you saw but episcura the texture site is giving a month of free pro access for each 8 textures you submit, 3 if they are tiled. Not bad. Now if only they would have a section of textures shot with Macbeth charts then that would be really amazing.

Okay, thanks again DC!


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