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 Post subject: Re: Dual 4K monitor PC
PostPosted: Sun Apr 27, 2014 8:58 am 
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Joined: Sun Apr 17, 2005 7:26 am
Posts: 43
Location: Denmark
Progress has been slow lately.
I'm still waiting for feedback from Asus, Gigabyte and Intel concerning support for UHD @ 60hz @ 30bit on the motherboards displayport.

While waiting I've been trying to get familiar with motherboard features and performance.
It seems that Gigabyte's VRM design is superior to Asrock and Asus and far superior to MSI when it comes to efficiency according to THIS.

Judging from the FLIR photo in the link the Gigabyte Z87X-D3H actually wipes the floor with the MSI Z87-G45 when it comes to VRM efficiency.

The new Intel Z97 chipset should be released next month according to THIS, so I might wait and see if the SATA Express and/or M.2 NGFF SSD interface is worth it. I doubt it though, considering that I'll more than likely be utilising Samsung Rapid Mode or similar to boost SSD performance.

I've received an EVGA 750 G2 PSU and have begun modifying the Antec 300 case to suit my needs.


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 Post subject: Re: Dual 4K monitor PC
PostPosted: Sun Apr 27, 2014 11:47 am 
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Lower VRM temps lead to better VRM efficiency..but it's just part of the power picture. The power mgmt design is a big part (as well as number of phases is proportional to idle power use), what peripheral components used are another. Here's a roundup at Hardware.info of a bunch of x87 mobos.

x97 chipset - my mantra for new chipsets is wait 3 months after intro to purchase. They ALWAYS have a bug that neccesitates a chip revision and the UEFI will have many updates in the first few months to fix bugs/tune performance.

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1080p Gaming build: i5-4670K, Mugen 4, MSI Z87-G45, MSI GTX 760 2GB Gaming, 8GB 1866 RAM, Samsung Evo 250GB, WD Red 2TB, Samsung DVD burner, Fractal Define R4, Antec True Quiet 140 (2 front + rear) case fans, Seasonic X-560. 35-40W idle, 45-55W video streaming, 170-200W WoW, 200-230W Rift, 318W stress test (Prime95 + Furmark)


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 Post subject: Re: Dual 4K monitor PC
PostPosted: Mon Apr 28, 2014 9:04 am 
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Joined: Sun Apr 17, 2005 7:26 am
Posts: 43
Location: Denmark
Well, the lower VRM temp is a result of better VRM efficiency (less energy wasted as heat).
I can only agree that lower temperature yields better semiconductor efficiency.

Your link refers to x77 mobos.

True what you say about chipset bugs, I want something that has been thoroughly tested so I'll probably go for a H87 or Z87.

I received word from Gigabyte today:
-Onboard Displayport on GA-Z87X-UD3H with F9 bios supports UHD @ 60hz @ 32-bit
-BIOS and POST screen is not visible with onboard graphics (UHD@60hz), monitor does not turn on until Windows is loaded
-NVIDIA GTX Titan Black (GV-NTITANBLKD5-6GD-B) with displayport (UHD@60hz), no problem to see BIOS and POST screen.

They failed to answer if they experienced the following issues:
- Intel driver issue causing choppy display in MST mode and Collage mode
- NVIDIA cards fail to POST 50% of the time when using DisplayPort in MST mode
..so I wrote them back.


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 Post subject: Re: Dual 4K monitor PC
PostPosted: Mon Apr 28, 2014 1:33 pm 
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my bad - fixed the link

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1080p Gaming build: i5-4670K, Mugen 4, MSI Z87-G45, MSI GTX 760 2GB Gaming, 8GB 1866 RAM, Samsung Evo 250GB, WD Red 2TB, Samsung DVD burner, Fractal Define R4, Antec True Quiet 140 (2 front + rear) case fans, Seasonic X-560. 35-40W idle, 45-55W video streaming, 170-200W WoW, 200-230W Rift, 318W stress test (Prime95 + Furmark)


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 Post subject: Re: Dual 4K monitor PC
PostPosted: Fri Sep 26, 2014 12:00 am 
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I have been driving two UP2414Qs using a Nvidia NVS 510 card. This has four DisplayPort outputs, but when using MST to drive the UP2414Q monitor at 60Hz, it counts as two outputs - so in fact the card can only drive two of the monitors at a time. Nonetheless, it works well, as long as you pick the correct driver version. (Nvidia added some workarounds to their drivers for firmware bugs in the Dell monitors, but then forgot to include that code in later driver versions; I am using 9.18.13.4052 dated 2014-07-02 and it works well.)

The NVS 510 doesn't have much grunt so it would not be adequate for gaming or CAD work, especially not at 4k resolution. But for 2D stuff it is fine, and it doesn't have a fan, so is more appropriate for building a silent PC. (In fact I have two of the NVS 510 cards installed, using the other to drive some old T221 monitors using DisplayPort-to-DVI converters.)

I would be interested to hear if you did go for the K2000 card in the end, and if so, is it able to drive both UP2414Qs at full refresh at once?


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 Post subject: Re: Dual 4K monitor PC
PostPosted: Fri Sep 26, 2014 5:02 am 
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epa wrote:
But for 2D stuff it is fine, and it doesn't have a fan, so is more appropriate for building a silent PC.

Welcome to SPCR. Can you point a link to your fanless version? All I can find are a couple of OEM branded Nvidia reference designs with a fan ($280-$400).

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1080p Gaming build: i5-4670K, Mugen 4, MSI Z87-G45, MSI GTX 760 2GB Gaming, 8GB 1866 RAM, Samsung Evo 250GB, WD Red 2TB, Samsung DVD burner, Fractal Define R4, Antec True Quiet 140 (2 front + rear) case fans, Seasonic X-560. 35-40W idle, 45-55W video streaming, 170-200W WoW, 200-230W Rift, 318W stress test (Prime95 + Furmark)


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 Post subject: Re: Dual 4K monitor PC
PostPosted: Fri Sep 26, 2014 8:18 am 
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My bad. The NVS 510 does have a fan, albeit a small one. I think I was confused by seeing pictures of other NVS cards which are truly fanless. Unfortunately I think all of those are discontinued.


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 Post subject: Re: Dual 4K monitor PC
PostPosted: Sun Oct 12, 2014 7:33 am 
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Joined: Sun Apr 17, 2005 7:26 am
Posts: 43
Location: Denmark
Sorry about the lack of updates.
I had to put this project on hold due to car trouble - the car was ultimately replaced with a newish one.
Anyhow, this project is now active again.

I've got the following components on hand:
PSU: EVGA 750 G2
Case: modified Antec 300
Intake fans: 2 x Antec True Quite 140
Intake filters: 2 x Demcifilter 9001

The fans were on sale. Otherwise I might have chosen a fan with higher static pressure considering the fans habitat behind the filters.
It seems that Steve has good experience with the same fan behind intake filters so I guess I'll be ok.

I've made a final decision concerning case layout (see attachment) after reading Silverstone's excellent articles

epa wrote:
I have been driving two UP2414Qs using a Nvidia NVS 510 card.

Thanks for sharing your experience and the information regarding drivers.
How do you fancy the DPI of the UP2414Q? - does the fonts become too small?
Do you use 30 bit color?

Where I left off I was aiming to drive one static display with the Intel chipset and one dynamic display with a gfx card (GTX 750)
Now that a few months have passed I'll have to update my spreadsheets before making a decision.


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