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Vega's *Heavyweight* display and computer; edition 2012 - Page 44  

post #431 of 1300
My head hurts from reading 43 pages in one sitting. (I'm planning on doing a similar build in August minus the geotherm cooling loop and crt's)

Questions:
  • What is the brand of stainless steel desk you're using? I want something really solid so I'm deciding between glass, metal (buy aluminum plate and build some legs), or hard epoxy resin (high school science tables...ridiculously strong).
  • I've heard that going 4x sli can actually decrease fps numbers and cause extra incompatibilities over 3x sli. Comment?
  • Have you gotten the water chiller condensation issue solved (desiccant vs CO2 vs ??) ? Rather than trying to remove humidity or insulate against condensation I built a power controller that will calculate the dew point on the fly and keep the temperature of the coolant a few degrees above this. I have no idea how overclocks are going to be affected with sub ambient water vs sub zero so I don't know if it's even worth it to run a chiller if it's not going sub zero. If I do go sub zero I'd like to hear what other people have done besides stuffing a ton of crap in the case and/or gumming it up with dielectric grease.
  • Why not 4x SSD's with an LSI raid controller?

Edited by dr/owned - 4/13/12 at 12:40pm
post #432 of 1300
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post #433 of 1300
Thread Starter 
Quote:
Originally Posted by dr/owned View Post

My head hurts from reading 43 pages in one sitting. (I'm planning on doing a similar build in August minus the geotherm cooling loop and crt's)
Questions:
  • What is the brand of stainless steel desk you're using? I want something really solid so I'm deciding between glass, metal (buy aluminum plate and build some legs), or hard epoxy resin (high school science tables...ridiculously strong).
  • I've heard that going 4x sli can actually decrease fps numbers and cause extra incompatibilities over 3x sli. Comment?
  • Have you gotten the water chiller condensation issue solved (desiccant vs CO2 vs ??) ? Rather than trying to remove humidity or insulate against condensation I built a power controller that will calculate the dew point on the fly and keep the temperature of the coolant a few degrees above this. I have no idea how overclocks are going to be affected with sub ambient water vs sub zero so I don't know if it's even worth it to run a chiller if it's not going sub zero. If I do go sub zero I'd like to hear what other people have done besides stuffing a ton of crap in the case and/or gumming it up with dielectric grease.
  • Why not 4x SSD's with an LSI raid controller?

1: It's a stainless steel industrial table top I bought from Advance Tabco. This thing doesn't even flinch with all the weight I have on it and it's USA made baby!

2: Maybe on single screen but I have had great success with 4-way SLI in Surround mode. A high five! I plan on doing GTX 680 SLI scaling tests sometime in the future but here are my 3GB GTX 580's with a 990X:

SLIScaling.jpg


3: Haven't gotten to that yet. That is a whole animal in and of itself! Proper condensation protection is quite difficult to do properly if going below the dew point. Are the small gains justifiable versus chilled water above the dew point? I am not so sure anymore. Especially here even on my ambient loop the temps are pretty darn low.

4: There is a point of overkill. Most say that RAID 0 on SSD's is way overkill versus 1 SSD. Two load up games extremely quick in RAID 0 and I don't think I'd see much of a speed boost with getting two more. Then of course your RAID 0 array get's more unreliable every-time you add another drive.


On another note:

I've had success getting a custom resolution and frequency working in Surround! Running 3600x1877 @ 95Hz. That corrects for a perfect GW900 aspect ratio for each screen, increases the Hz a nice bit above stock settings and the whole display setup us almost a 2:1 width/height ratio which is just about perfect.

I am running these settings right now and they seem to be doing pretty well:

3960X @ 5 GHz @ 1.47v.
105 MHz Base-clock for a little more PCI-E "oomph".
2240 MHz @ 9-11-11-28 on the 16GB RAM. May try and get those timing a bit lower in the future.

Idle @ 28 C and game load 45-55 C. Prime95 full load temps are ~57 C. I also purchased the Intel overclock warranty for $35, small price I think for some piece of mind and they cross ship if you let them put a reserve amount on your credit card.
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post #434 of 1300
Quote:
Originally Posted by CallsignVega View Post

3: Haven't gotten to that yet. That is a whole animal in and of itself! Proper condensation protection is quite difficult to do properly if going below the dew point. Are the small gains justifiable versus chilled water above the dew point? I am not so sure anymore. Especially here even on my ambient loop the temps are pretty darn low.

Thank you for the reply. If you decide on doing CO2 flooding then let me know. Some in-the-shower thinking is telling me it might be a good idea to do some sort of polycarb/acrylic bell jar system where you put the entire desktop inside of it (so you don't have to glue your pc case shut) and then install a CO2 sensor like this with a custom controller. A bit more precise than using a match to gauge fill level. I'm an electrical engineer so this stuff interests the hell out of me.
post #435 of 1300
Thread Starter 
Quote:
Originally Posted by dr/owned View Post

Thank you for the reply. If you decide on doing CO2 flooding then let me know. Some in-the-shower thinking is telling me it might be a good idea to do some sort of polycarb/acrylic bell jar system where you put the entire desktop inside of it (so you don't have to glue your pc case shut) and then install a CO2 sensor like this with a custom controller. A bit more precise than using a match to gauge fill level. I'm an electrical engineer so this stuff interests the hell out of me.

Cool. Ya it will be interesting to bounce some ideas off of you. I don't want to do a conform-ant sealant again. Are you waiting for "big Kepler" for your build? I'd imagine when that hit's I'll just swap out the four cards and be ready to get again.
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post #436 of 1300
Quote:
Originally Posted by CallsignVega View Post

Cool. Ya it will be interesting to bounce some ideas off of you. I don't want to do a conform-ant sealant again. Are you waiting for "big Kepler" for your build? I'd imagine when that hit's I'll just swap out the four cards and be ready to get again.

August just seems like the best time for a lot of things to shake themselves loose. GK110 or 4 GB 680's , Intel 530/720 series SSD's, 3980X, less hdd price gouging. Plus by that time IB will be thoroughly benched and enthusiast level Z77 boards with quad-sli support will abound should I go that way.

Plus in August I'll be able to take advantage of Intel employee pricing thumb.gif
post #437 of 1300
Quote:
Originally Posted by CallsignVega View Post


Cool. Ya it will be interesting to bounce some ideas off of you. I don't want to do a conform-ant sealant again. Are you waiting for "big Kepler" for your build? I'd imagine when that hit's I'll just swap out the four cards and be ready to get again.


Good, wouldn't want to wait too long to see you redo your build again :D

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post #438 of 1300
Quote:
Originally Posted by dr/owned View Post

What is the brand of stainless steel desk you're using? I want something really solid so I'm deciding between glass, metal (buy aluminum plate and build some legs), or hard epoxy resin (high school science tables...ridiculously strong).

My dad has one of those. I get it when I move into my new room. biggrin.gif
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post #439 of 1300
Quote:
Originally Posted by CallsignVega View Post

It was a stand-off that wasn't fully seated from factory on the high temp GPU. Corrected and now all GPU's idle 21-25 C and full overclock load 33-38 C.
Wow those temps are low considering the amount of stuff you're cooling with the Mo Ra 9x140. It seems to be doing a great job. What frequencies are you running the 680s at?
 
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post #440 of 1300
Thread Starter 
On my 4-way GTX 680 setup using EVGA reference cards with EK water blocks, my stable overclock is 1202 MHz core and 3534 MHz memory. Pretty much spent all day testing those clocks using Heaven 3.0, BF3, Crysis 2, Metro 2033 and Skyrim with some mods and HD texture pack would crash at the lowest frequency. So modded Skyrim set my ceiling. I found though that performance scales linearly with increased memory clocks and there is no "sweet spot". Get that memory frequency as high as it can go!

Those number are still pretty good considering 4-Way SLI is usually a bit harder to highly overclock. 4-way 680 just destroys Skyrim in Surround:

http://www.youtube.com/watch?v=FvShhfWpk2M&context=C41467ecADvjVQa1PpcFOpwHlB70YlOALsTk3pZxTxt4tbGt5H9Yk=

I am just astounded by how smooth the GTX 680 handles Surround using PCI-E 3.0 slots. There is no micro-stuttering, pauses or jitters. I don't think I could tell the difference between a single GPU running a single monitor and this 4-Way SLI Surround setup. Combine that with the CRT's and this is by far the smoothest and best Surround/Eyefinity setup of mine to date. wink.gif

It will be interesting to see if any of these new EVGA non-reference cards will allow the voltage to rise above software 1.175 (I think really the only way to get more clocks out of these and just not more power phases).
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