• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

2560x1440 27" Monitor Advice

Joined
Jun 8, 2007
Messages
48 (0.01/day)
Likes
0
Processor Intel Core i7-2600K
Motherboard ASUS P8P67 Pro Intel P67 (REV B3)
Cooling Corsair Memory Cooling Hydro Series H60
Memory 8GB G.Skill DDR3 PC3-12800 1600MHz RipjawsX
Video Card(s) Gigabyte GeForce GTX 560 Ti 950MHz 1GB X2
Storage Intel X25-M Gen2 Mainstream 80GB, 500GB Samsung SATAII 16MB, WD Raptor
Display(s) Samsung 22"
Case Corsair 600T
Audio Device(s) Asus Xonar Xense Sound Card
Power Supply Corsair 850W Corsair Modular PSU
Software Windows 7 64bit
#1
Hi,

I'm looking at upgrading my monitor. I'm after a 1440 27" monitor that's good for gaming (e.g. BF4) and movies. I'll be upgrading my GFX card soon to a AMD Radeon R9 290X (once non reference coolers come out) or a GTX 780 (depending on a price drop).

At the moment I'm looking at these two monitors...

Iiyama Prolite XB2779QS-S 27" AH-IPS Professional Widescreen LED Monitor

Asus PB278Q 27-inch

Both are £440 which is about $710 USD

I can't seem to find a decent review of the Iiyama monitor but the specs look right and TBH I love the way it looks!

Does any one have any experience with the Iiyama? I'm a bit concerned by the the response rate but as far as I can tell those numbers are made up by the companies for marketing!:confused: I'm open to other suggestions around that price range. I know about the cheap Korean models that are available but am a bit too paranoid to take the risk and would also prefer the extra bezel quality etc.

Any advice appreciated!
 

RCoon

Gaming Moderator
Staff member
Joined
Apr 19, 2012
Messages
11,401 (5.43/day)
Likes
9,570
Location
Gypsyland, UK
System Name HP Omen 17
Processor i7 7700HQ
Memory 16GB 2400Mhz DDR4
Video Card(s) GTX 1060
Storage Samsung SM961 256GB + HGST 1TB
Display(s) 1080p IPS G-SYNC 75Hz
Audio Device(s) Bang & Olufsen
Power Supply 230W
Mouse Roccat Kone XTD+
Software Win 10 Pro
#2
Why not go on fleabay and order a Korean IPS monitor? Way cheaper, and many users on here have them. PerfectPixel and Catleap etc. Go ahead and ask around.
 
Joined
Oct 13, 2007
Messages
7,693 (2.05/day)
Likes
1,772
Location
Chicago
System Name DarkStar
Processor i5 3570K 4.4Ghz
Motherboard Asrock Z77 Extreme 3
Cooling Apogee HD White/XSPC Razer blocks
Memory 8GB Samsung Green 1600
Video Card(s) 2 x GTX 670 4GB
Storage 2 x 120GB Samsung 830
Display(s) 27" QNIX
Case Enthoo Pro
Power Supply Seasonic Platinum 760
Mouse Steelseries Sensei
Keyboard Ducky Pro MX Black
Software Windows 8.1 x64
#3
Unless you happen to have plenty of cash and/or "warranty service" peace-of-mind is one of the most important things you definitely should buy a QNIX or X-Star Samsung PLS on eBay or ipsledmonitors.com (if in the States).
 
Joined
Apr 7, 2011
Messages
1,163 (0.47/day)
Likes
471
System Name Desktop
Processor Intel i7-3930k
Motherboard ASUS Sabertooth X79
Cooling Intel AIO
Memory 8x4GB 1866MHz
Video Card(s) EVGA GTX 970 SC
Storage Adaptec 2405 SAS|Hitachi SAS 15k 450GB|2xSeagate 2TB|WD RE Enterprise 4 TB|HP Ultrium 1760 LTO4 Tape
Display(s) HP ZR24w
Case Fractal Define XL Black
Audio Device(s) Schiit Modi Uber>Schiit Asgard 2>Sennheiser HD600
Power Supply Corsair HX850
Mouse Logitech G603
Keyboard Logitech G613
Software Windows 10 Pro x64
#4
Hi,

I'm a bit concerned by the the response rate but as far as I can tell those numbers are made up by the companies for marketing!:confused: I'm open to other suggestions around that price range. I know about the cheap Korean models that are available but am a bit too paranoid to take the risk and would also prefer the extra bezel quality etc.

Any advice appreciated!
You are very right when you say that it's "made up". They usually just put the grey to grey response time (which is the fastest) while others can be (and they are on all screens) much higher (10-25ms).
Another very important thing (especially if used for gaming) is input lag.

I strongly suggest going to tftcentral (http://www.tftcentral.co.uk/reviews.htm) and check the comparisons and the reviews (AFAIK they have a review of both the Iiyama and the ASUS + the likes of Dell, Benq, HP etc.), you will find all the answers there (response time, backlight bleed, input lag, colour accuracy etc.).
 
Joined
Jun 8, 2007
Messages
48 (0.01/day)
Likes
0
Processor Intel Core i7-2600K
Motherboard ASUS P8P67 Pro Intel P67 (REV B3)
Cooling Corsair Memory Cooling Hydro Series H60
Memory 8GB G.Skill DDR3 PC3-12800 1600MHz RipjawsX
Video Card(s) Gigabyte GeForce GTX 560 Ti 950MHz 1GB X2
Storage Intel X25-M Gen2 Mainstream 80GB, 500GB Samsung SATAII 16MB, WD Raptor
Display(s) Samsung 22"
Case Corsair 600T
Audio Device(s) Asus Xonar Xense Sound Card
Power Supply Corsair 850W Corsair Modular PSU
Software Windows 7 64bit
#5
Wow, I looked into these ages ago but decided against it at the time. Forgot how cheap they actually are!

Is there a general consensus between which is better between the QNIX or X-Star Samsung PLS.

Anyone used accessorieswhole on ebay?
 
Joined
Jun 8, 2007
Messages
48 (0.01/day)
Likes
0
Processor Intel Core i7-2600K
Motherboard ASUS P8P67 Pro Intel P67 (REV B3)
Cooling Corsair Memory Cooling Hydro Series H60
Memory 8GB G.Skill DDR3 PC3-12800 1600MHz RipjawsX
Video Card(s) Gigabyte GeForce GTX 560 Ti 950MHz 1GB X2
Storage Intel X25-M Gen2 Mainstream 80GB, 500GB Samsung SATAII 16MB, WD Raptor
Display(s) Samsung 22"
Case Corsair 600T
Audio Device(s) Asus Xonar Xense Sound Card
Power Supply Corsair 850W Corsair Modular PSU
Software Windows 7 64bit
#6
I strongly suggest going to tftcentral (http://www.tftcentral.co.uk/reviews.htm) and check the comparisons and the reviews (AFAIK they have a review of both the Iiyama and the ASUS + the likes of Dell, Benq, HP etc.), you will find all the answers there (response time, backlight bleed, input lag, colour accuracy etc.).
Thanks for the link, I can't seem to find the review for the Iiyama Prolite XB2779QS-S on that site? Could you send me the link?
 

wolf

Performance Enthusiast
Joined
May 7, 2007
Messages
5,576 (1.43/day)
Likes
864
System Name MightyX (MITX)
Processor Core i7 4770K @ 4.2ghz
Motherboard Asus Z87i-Pro
Cooling Noctua NH-L12
Memory 16gb DDR3 1600 LP
Video Card(s) Gigabyte GTX1080 G1 OC
Storage Lots of SSD's
Display(s) AOC AGON AG352QCX
Case Raven RVZ-01
Power Supply SFX 450 G
Mouse Razer Mamba Tournament Chroma
Keyboard Razer Blackwidow X Chroma
#7
I hav the Asus PB278Q and it is a really nice monitor, no issues whatsoever, and the stand is the best I've ever had, as is the array of inputs.

having said that I saw a deal pop up recently for a 120Hz monitor with all other specs the same as the Asus bar inputs (one DVI) from a noname brand and I am very tempted after seeing it in action, the panel looks just as good, if not better because of 120Hz capability.

For reference the Asus cost me 625 AUD and now they are 595, and this nonname jobbie is $320
 
Joined
Jan 15, 2013
Messages
7 (0.00/day)
Likes
0
Processor AMD FX9590 4.7-5.0 Turbo 5316 OC
Motherboard ASUS Crosshair V Formula - Z 2101 BIOS
Cooling Swiftech H220 w/ Cougar PWM fans 2x2 Push/Pull
Memory Corsair VengeancePRO 1600Hz 32GB
Video Card(s) XFX HD797TDBC X 2 15.4 drivers
Storage Samsung 850Pro 256Gb SSD RAPID Mode(OS and STEAM) + Samsung 840Pro + WD 750 Black X 2
Display(s) Dell U2711
Case Corsair 600T WHT w/MNPC Acrylic Door + red Spectre Pro 200mm fans
Power Supply Corsair AX1200 w/red cable extensions
Software Windows 7 64 + Windows 10 Preview
#8
Dell U2711.
 
Joined
Oct 13, 2007
Messages
7,693 (2.05/day)
Likes
1,772
Location
Chicago
System Name DarkStar
Processor i5 3570K 4.4Ghz
Motherboard Asrock Z77 Extreme 3
Cooling Apogee HD White/XSPC Razer blocks
Memory 8GB Samsung Green 1600
Video Card(s) 2 x GTX 670 4GB
Storage 2 x 120GB Samsung 830
Display(s) 27" QNIX
Case Enthoo Pro
Power Supply Seasonic Platinum 760
Mouse Steelseries Sensei
Keyboard Ducky Pro MX Black
Software Windows 8.1 x64
#9
X-Star and QNIX are the same except for the name. Yeah AccessoriesWhole is a good one. Or hulustar or greensum offhand. Stay away from dreamseller and red-cap.

Not only are these PLS panels really nice in terms of color, contrast and overall IQ (Samsung claims "like IPS but better" and I tend to agree) but like all of them also do at least 96Hz.
 
Joined
Jun 8, 2007
Messages
48 (0.01/day)
Likes
0
Processor Intel Core i7-2600K
Motherboard ASUS P8P67 Pro Intel P67 (REV B3)
Cooling Corsair Memory Cooling Hydro Series H60
Memory 8GB G.Skill DDR3 PC3-12800 1600MHz RipjawsX
Video Card(s) Gigabyte GeForce GTX 560 Ti 950MHz 1GB X2
Storage Intel X25-M Gen2 Mainstream 80GB, 500GB Samsung SATAII 16MB, WD Raptor
Display(s) Samsung 22"
Case Corsair 600T
Audio Device(s) Asus Xonar Xense Sound Card
Power Supply Corsair 850W Corsair Modular PSU
Software Windows 7 64bit
#10
Just got a X-Star DP2710 LED from accessorieswhole on Ebay!

£200 less was too good to turn down

Here's hoping the tax man doesn't get me!
 
Joined
Oct 13, 2007
Messages
7,693 (2.05/day)
Likes
1,772
Location
Chicago
System Name DarkStar
Processor i5 3570K 4.4Ghz
Motherboard Asrock Z77 Extreme 3
Cooling Apogee HD White/XSPC Razer blocks
Memory 8GB Samsung Green 1600
Video Card(s) 2 x GTX 670 4GB
Storage 2 x 120GB Samsung 830
Display(s) 27" QNIX
Case Enthoo Pro
Power Supply Seasonic Platinum 760
Mouse Steelseries Sensei
Keyboard Ducky Pro MX Black
Software Windows 8.1 x64
#11
Right on and yeah...you might have to pay some duty in the UK. There are two huge threads on these displays at overclock.net in Displays section. The first post of the PLS Club thread has a ton of general info and a FAQ and all that. Most of these have come with no dead pixels (though some guys with like 3 even are not even really bothered; location matters though) but the relative shoddy construction/installation of the inside frame and/or bezel can cause some backlight bleed, bad on some. The good news is that it can be fixed by the user.
 
Joined
Jun 8, 2007
Messages
48 (0.01/day)
Likes
0
Processor Intel Core i7-2600K
Motherboard ASUS P8P67 Pro Intel P67 (REV B3)
Cooling Corsair Memory Cooling Hydro Series H60
Memory 8GB G.Skill DDR3 PC3-12800 1600MHz RipjawsX
Video Card(s) Gigabyte GeForce GTX 560 Ti 950MHz 1GB X2
Storage Intel X25-M Gen2 Mainstream 80GB, 500GB Samsung SATAII 16MB, WD Raptor
Display(s) Samsung 22"
Case Corsair 600T
Audio Device(s) Asus Xonar Xense Sound Card
Power Supply Corsair 850W Corsair Modular PSU
Software Windows 7 64bit
#12
Shocking, customs guys are really on it! Already been charged!!! £22 :D
 
Joined
Oct 13, 2007
Messages
7,693 (2.05/day)
Likes
1,772
Location
Chicago
System Name DarkStar
Processor i5 3570K 4.4Ghz
Motherboard Asrock Z77 Extreme 3
Cooling Apogee HD White/XSPC Razer blocks
Memory 8GB Samsung Green 1600
Video Card(s) 2 x GTX 670 4GB
Storage 2 x 120GB Samsung 830
Display(s) 27" QNIX
Case Enthoo Pro
Power Supply Seasonic Platinum 760
Mouse Steelseries Sensei
Keyboard Ducky Pro MX Black
Software Windows 8.1 x64
#13
Not bad for what you are getting and also considering what it would have cost for a name brand overall.
 
Joined
Feb 14, 2012
Messages
603 (0.28/day)
Likes
387
Location
Romania
System Name No name
Processor i5 8600k@4800Mhz 1.2v
Motherboard Gigabyte Z370 UD3P
Cooling Prolimatech Super Mega + Coolink 120mm
Memory 16GB 3000Mhz
Video Card(s) Evga 980Ti SC + Accelero Xtreme III
Storage Kingston AV400 256GB, WD30PURX
Display(s) Asus MG279Q
Case CM HAF 922
Audio Device(s) Asus Xonar DS
Power Supply Seasonic G650 650W
Mouse Roccat Savu
Keyboard Asus Strix MX Brown
Software Windows 10 Pro x64
Benchmark Scores 5948 3dmark TimeSpy
#14
560Ti, Battlefield 4 and 2560x1440 unless you want to play on low quality settings and/or low framerate you should conssider an upgrade to the GPU first.
I`m using a 1440p U2713HM since spring, and honestly i would choose a 1080p IPS or VA panel if i were to choose again.
 
Joined
Oct 13, 2007
Messages
7,693 (2.05/day)
Likes
1,772
Location
Chicago
System Name DarkStar
Processor i5 3570K 4.4Ghz
Motherboard Asrock Z77 Extreme 3
Cooling Apogee HD White/XSPC Razer blocks
Memory 8GB Samsung Green 1600
Video Card(s) 2 x GTX 670 4GB
Storage 2 x 120GB Samsung 830
Display(s) 27" QNIX
Case Enthoo Pro
Power Supply Seasonic Platinum 760
Mouse Steelseries Sensei
Keyboard Ducky Pro MX Black
Software Windows 8.1 x64
#15
Really? Why? Even if 144Hz 1080P is just not that many pixels.

Oh agreed re. GPU upgrade for AAA games. I am getting a second 7950 eventually.
 

tigger

I'm the only one
Joined
Mar 20, 2006
Messages
10,476 (2.42/day)
Likes
1,673
System Name Black to the Core MKIV
Processor Intel I7 6700k
Motherboard Asus Z170 Pro Gaming socket 1151
Cooling NZXT Kraken X61 280mm radiator
Memory 2x8gb Corsair vengeance LPX 2400 DDR4
Video Card(s) XFX Radeon R9 290 4gb ddr5
Storage Patriot Blast 120gb ssd Boot and WD10EADX-22TDHB0 1TB Data
Display(s) Dell 2408WFP 24" 1920x1200
Case Nzxt IS 340
Audio Device(s) Asus xonar dsx pci-e
Power Supply Corsair CX750
Mouse Logitech G502
Software Win 10 Pro x64
#16
560Ti, Battlefield 4 and 2560x1440 unless you want to play on low quality settings and/or low framerate you should conssider an upgrade to the GPU first.
I`m using a 1440p U2713HM since spring, and honestly i would choose a 1080p IPS or VA panel if i were to choose again.
560ti x 2
 
Joined
Feb 14, 2012
Messages
603 (0.28/day)
Likes
387
Location
Romania
System Name No name
Processor i5 8600k@4800Mhz 1.2v
Motherboard Gigabyte Z370 UD3P
Cooling Prolimatech Super Mega + Coolink 120mm
Memory 16GB 3000Mhz
Video Card(s) Evga 980Ti SC + Accelero Xtreme III
Storage Kingston AV400 256GB, WD30PURX
Display(s) Asus MG279Q
Case CM HAF 922
Audio Device(s) Asus Xonar DS
Power Supply Seasonic G650 650W
Mouse Roccat Savu
Keyboard Asus Strix MX Brown
Software Windows 10 Pro x64
Benchmark Scores 5948 3dmark TimeSpy
#17
660 x 2 here and i have to disable AA or high res textures in games like BF4 Beta, Bioshock Infinite or Crysis 3 due to vRAM usage rising above 1.5 and a general lack of consistent frame rates near 60.
So if you want 60 fps and high settings go 1080p or upgrade :)
 
Joined
Sep 30, 2013
Messages
175 (0.11/day)
Likes
35
System Name Parts Arriving Now...
Processor Intel i7-4770k
Motherboard Asus Maximus VI Formula
Cooling Noctua u14s w/push-pull
Memory Corsair Vengeance Pro 16gb 1866
Video Card(s) 2x EVGA GTX 780ti Superclocked
Storage Samsung 840 Pro 256gb, WD black 2TB
Display(s) QNIX QX2710 LED Evolution II 1440p
Case Corsair 750D
Audio Device(s) Creative Soundblaster X-FI xtrememusic
Power Supply Corsair AX1200i
Software Window 7 Ultimate
Benchmark Scores n/a, system being built this week
#18
I'm picking up a QNIX from an Amazon reseller since I want to have them as a backup in case something goes south with the vendor. As someone else stated the QNIX and X-Star are literally the same monitor with a different badge, so neither is better than the other. A couple other things to consider:

1) Get a SquareTrade warranty in case something goes wrong. If you have to ship the monitor back to the manufacturer it will cost you more than you paid for the monitor (or close). SquareTrade covers it for 3 years and will just send you a check for the value.

2) Be prepared to open the shell and adjust the panel if you have backlight bleed, the panel does not sit very well in the cheap bezel and most bleed can be fixed with some electrical tape to make it fit more snugly (see the guides on youtube or other forums).

3) Make sure your video card supports this monitor and can handle the resolution. This monitor has very low input lag because there is no scaler or processing on the image. That also means you CANNOT run in a lower resolution, you MUST run in 2560x1440. If you can't run at least 60fps in that resolution you're going to be miserable, just to give you an idea I'm looking at 2x780s to be able to run games since I want to overlock to 100+ hz.

I think these monitors are cool and I'm personally getting one, but there is still a part of me concerned about locking myself into always needing two video cards to run a decent framerate. A lot of people are happy with them but who knows...

Edit: didn't see that you had already bought one, I missed that post as I was reading. So what do you think so far?
 
Last edited:
Joined
Aug 2, 2011
Messages
995 (0.42/day)
Likes
478
Processor Core i7 6800k @ 4.1GHz @ 1.325v
Motherboard MSI X99A Raider
Cooling LEPA AquaChanger 240
Memory 4x8GB Corsair Vengence LED @3000MHz
Video Card(s) Gigabyte Aorus GTX 1080 Ti @ +25core +400mem
Storage 960 EVO 1TB, OCZ Vector 512GB, 2x Samsung 830 128GB, 750GB Samsung, 1.5TB Caviar Green
Display(s) Acer XB270HU, Qnix QX2710
Case Corsair Carbide 500R White
Audio Device(s) ASUS Xonar DX
Power Supply EVGA P2 850W
Mouse RAT8
Keyboard Razer Black Widow Ultimate 2016 Edition
Software Win 10 x64
#19
X-Star and QNIX are the same except for the name. Yeah AccessoriesWhole is a good one. Or hulustar or greensum offhand. Stay away from dreamseller and red-cap.

Not only are these PLS panels really nice in terms of color, contrast and overall IQ (Samsung claims "like IPS but better" and I tend to agree) but like all of them also do at least 96Hz.
I bought my Qnix from Dreamseller. I have absolutely nothing bad to say about them. Shipped quick as hell, and came with nary a dent in the packaging nor the item.
 
Joined
May 1, 2012
Messages
1,024 (0.49/day)
Likes
170
Location
New Jersey, USA
System Name Current Rig
Processor Intel i7 920 oc to 3.5ghz
Motherboard MSI x58 Platinum
Cooling Cooler Master Seidon 120M
Memory G.Skill 6gb ddr3 1333mhz 7-7-7-18
Video Card(s) Gigabyte GTX 670 OC WindForce 3X GV-N670OC-2GD
Storage Samsung EVO SSD
Display(s) Viewsonic 1440x900 5ms
Case CoolMaster HAF 932
Power Supply Coolmax 950w
Software Win 7 64bit
#20
Has anyone been satisfied with LG IPS panels from these companies:

Achieva Shimian
Crossover
Yamakasi
 
Joined
Oct 13, 2007
Messages
7,693 (2.05/day)
Likes
1,772
Location
Chicago
System Name DarkStar
Processor i5 3570K 4.4Ghz
Motherboard Asrock Z77 Extreme 3
Cooling Apogee HD White/XSPC Razer blocks
Memory 8GB Samsung Green 1600
Video Card(s) 2 x GTX 670 4GB
Storage 2 x 120GB Samsung 830
Display(s) 27" QNIX
Case Enthoo Pro
Power Supply Seasonic Platinum 760
Mouse Steelseries Sensei
Keyboard Ducky Pro MX Black
Software Windows 8.1 x64
#21
I bought my Qnix from Dreamseller. I have absolutely nothing bad to say about them. Shipped quick as hell, and came with nary a dent in the packaging nor the item.
Well, cool. You were one of the essentially lucky ones then. Most of the people on OCN who had a bad experience in some way bought from dreamseller. Theirs were usually cheaper for a reason it seemed. That's not to say all their panels were subpar or he/she is some kind of scammer, as you further prove.

As for Shimians and the other IPSs they are not bad but I just don't think they are worth the price anymore with the PLS on the scene (though I haven't compared prices lately; in May when I bought my QNIX for $319 all IPS were at least $400).

Excellent QNIX Review:

http://wecravegamestoo.com/forums/m...eview-2560x1440-matte-overclock-able-pls.html


If you can't run at least 60fps in that resolution you're going to be miserable
I don't agree with this based on my experience. Depends on game and is partially subjective too I guess but I only have a single 7950 at present and BF3 and BF4 can't do better than average 35-50 and they "feel" and play just fine. Do I want more power and more frames per sec and would it be an even better experience? Sure but I do not absolutely need. It's been far from "miserable". And hey if you got the cash for two 780s then by all means but don't give people the idea they NEED that much power to game on this display.

I am definitely getting a second 7950 once I get a different mobo...
 
Last edited:
Joined
Sep 30, 2013
Messages
175 (0.11/day)
Likes
35
System Name Parts Arriving Now...
Processor Intel i7-4770k
Motherboard Asus Maximus VI Formula
Cooling Noctua u14s w/push-pull
Memory Corsair Vengeance Pro 16gb 1866
Video Card(s) 2x EVGA GTX 780ti Superclocked
Storage Samsung 840 Pro 256gb, WD black 2TB
Display(s) QNIX QX2710 LED Evolution II 1440p
Case Corsair 750D
Audio Device(s) Creative Soundblaster X-FI xtrememusic
Power Supply Corsair AX1200i
Software Window 7 Ultimate
Benchmark Scores n/a, system being built this week
#22
Well, cool. You were one of the essentially lucky ones then. Most of the people on OCN who had a bad experience in some way bought from dreamseller. Theirs were usually cheaper for a reason it seemed. That's not to say all their panels were subpar or he/she is some kind of scammer, as you further prove.

As for Shimians and the other IPSs they are not bad but I just don't think they are worth the price anymore with the PLS on the scene (though I haven't compared prices lately; in May when I bought my QNIX for $319 all IPS were at least $400).

Excellent QNIX Review:

http://wecravegamestoo.com/forums/m...eview-2560x1440-matte-overclock-able-pls.html


I don't agree with this based on my experience. Depends on game and is partially subjective too I guess but I only have a single 7950 at present and BF3 and BF4 can't do better than average 35-50 and they "feel" and play just fine. Do I want more power and more frames per sec and would it be an even better experience? Sure but I do not absolutely need. It's been far from "miserable". And hey if you got the cash for two 780s then by all means but don't give people the idea they NEED that much power to game on this display.

I am definitely getting a second 7950 once I get a different mobo...
I never said you need 2 780s to run a panel like this. But you should be able to run at a bare minimum 40+ fps, and if you can't run 60 then you are going to get stuttering. Keep in mind: If you're averaging 40 fps, that means that during intense action you're going to be dropping to half that (or worse). That means that even if you're playing single play CoD when a big explosion happens you're going to have times when your game is chopping so badly you can't even see what's going on.

To me...that's miserable and unplayable. If you can consistently run at 60fps then even when you hit a particularly impressive/explosive scene you only dip to 30-40fps which is still bearable. Personally, I want to be able to run closer to 100fps and if that means sacrificing a tiny bit of extra effects, so be it. If you're going to run in 1440p with high graphical settings you need at least one very powerful GPU. You don't *need* a 780, but at this point I wouldn't be looking at a 27" 1440p WITHOUT a scaler if you don't have a card at least close to that powerful.

Edit: Oops, I forgot to edit my original post. What I had meant to say was that I was looking at two 780s because I want to overclock to 100+ hz and will need more power to push that many frames. I'll edit it now, now I see why you said what you did...my bad. I still stand by my statement that under 60fps is miserable though... I'm playing on a 24" 1920x1200 right now and when I start to get down to 60fps it's time to upgrade for me, thus my build this month :)