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(Reviewed) $400 2560x1440 IPS no-AG 90hz+ Achieva Shimian QH270 and Catleap Q270 - Page 61

Poll Results: Vote when your Achieva/Catleap monitor comes in.

 
  • 41% (232)
    Achieva QH270
  • 2% (12)
    Achieva QH270 (DOA / didn't recieve)
  • 8% (46)
    Achieva QH270 (Dead pixel(s) / flawed panel)
  • 40% (224)
    Catleap Q270
  • 1% (8)
    Catleap Q270 (DOA / didn't recieve)
  • 5% (33)
    Catleap Q270 (Dead pixel(s) / flawed panel)
555 Total Votes  
post #601 of 4784
I don't believe the 97hz is correct... that's far beyond the spec of DVI-D--the most it could reasonably handle is around 75hz. It may say 97hz in the control panel but it's definitely NOT refreshing at 97hz.

2560x1440 @ 75hz: Bandwidth: 9.84 Gbit (w/overhead) or 276.48 MHz.
2560x1440 @ 97hz: Bandwidth: 12.73 Gbit (w/overhead) or 357.58 MHz.
DVI-D Dual Link = 9.9 Gbit (330 MHz)

edit; IF someone could get it running at 75hz that would definitely be interesting though! I remember my old 2209WA could be pushed to 75hz and there was definitely a noticeable improvement in smoothness of motion.
post #602 of 4784
Trail and error to get to 97. This is what happens when I try 98 and above....

db0r5mwd.upc.jpg
post #603 of 4784
Quote:
Originally Posted by Xiphos View Post

Quote:
Originally Posted by noak View Post

He's making a profit, its a business.
Every other retailer does this, why complain when a eBay seller does?

and how am I complaining? I expect them to make a profit.
When ughnook asked for a lower price, I merely pointed out to ughnook that dreamseller's profit margin is roughly 10%. which I find reasonable.

Not you, but some people were wondering why the seller is selling this for more than it costs him. I just found your post related to my rant smile.gif
post #604 of 4784
Quote:
Originally Posted by necriss View Post

Trail and error to get to 97. This is what happens when I try 98 and above....
db0r5mwd.upc.jpg

But is there any noticeable improvement in motion? You should be able to tell immediately after changing it that your mouse cursor is A LOT smoother, which I doubt is the case. With no OSD there's no way to check if it's actually running at the refresh rate it says it is unless you can test a game with vsync or something like that (would that work?)

You should try 72-75hz and see if you can see an actual improvement.
post #605 of 4784
Quote:
Originally Posted by ibtar View Post

But is there any noticeable improvement in motion? You should be able to tell immediately after changing it that your mouse cursor is A LOT smoother, which I doubt is the case. With no OSD there's no way to check if it's actually running at the refresh rate it says it is unless you can test a game with vsync or something like that (would that work?)
You should try 72-75hz and see if you can see an actual improvement.


see above, I tested Alan Wake vsync'd and it ran 97 at max fps. Yes it appears a lot smoother, not sure whether its true 97hz but still a good improvement over 60hz.
post #606 of 4784
Thread Starter 
Quote:
Originally Posted by necriss View Post

Trail and error to get to 97. This is what happens when I try 98 and above....
db0r5mwd.upc.jpg

Makes sense. I'm new to this whole monitor overclocking thing.


Has anyone done this on an ATI card?
Bruce
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Bruce
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post #607 of 4784
Quote:
Originally Posted by necriss View Post

see above, I tested Alan Wake vsync'd and it ran 97 at max fps. Yes it appears a lot smoother, not sure whether its true 97hz but still a good improvement over 60hz.

Oh I missed the screenshot. It doesn't make sense, but fraps doesn't lie...
post #608 of 4784
Okay, I found this on wikipedia, but it's not cited.

http://en.wikipedia.org/wiki/Digital_visual_interface#Specifications
Quote:
Dual link maximum data rate is limited only by the bandwidth limits of the copper the DVI cable is constructed of and by the DVI signal's source.
post #609 of 4784
Thread Starter 
Bruce
(20 items)
 
  
CPUMotherboardGraphicsRAM
4670k Asus Z87 Pro HIS 7950 IceQ X2 2x2gb + 2x4gb DDR3 1333 
Hard DriveHard DriveHard DriveOptical Drive
Seagate 1TB 7200RPM OCZ Agility 4 128GB PNY 240GB LG Blu Ray Burner 
CoolingOSMonitorKeyboard
Hyper 212+ with extra fan Windows 10 Education x64 Shimian QH270 @110hz Medieval Dell OEM Keyboard 
PowerCaseMouseAudio
Corsair TX750 V1 Antec 300 Black Illusion  Logitech G400s Xonar ST 
AudioOtherOtherOther
Fostex T50rp with BMF mod Archer T9E Wifi adapter 2x Yate Loon D12SL-12D 120x38mm fans Thermalright TY-143 fan 
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Bruce
(20 items)
 
  
CPUMotherboardGraphicsRAM
4670k Asus Z87 Pro HIS 7950 IceQ X2 2x2gb + 2x4gb DDR3 1333 
Hard DriveHard DriveHard DriveOptical Drive
Seagate 1TB 7200RPM OCZ Agility 4 128GB PNY 240GB LG Blu Ray Burner 
CoolingOSMonitorKeyboard
Hyper 212+ with extra fan Windows 10 Education x64 Shimian QH270 @110hz Medieval Dell OEM Keyboard 
PowerCaseMouseAudio
Corsair TX750 V1 Antec 300 Black Illusion  Logitech G400s Xonar ST 
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Fostex T50rp with BMF mod Archer T9E Wifi adapter 2x Yate Loon D12SL-12D 120x38mm fans Thermalright TY-143 fan 
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post #610 of 4784
Um, can anyone verify the 97hz trick on a Shimian IPSBS version. Some more on the Catleap version as well. This is going to be a BIG deal if we can truly get 75 or 97hz refresh rate....
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Overclock.net › Forums › Components › Monitors and Displays › (Reviewed) $400 2560x1440 IPS no-AG 90hz+ Achieva Shimian QH270 and Catleap Q270