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(Reviewed) $400 2560x1440 IPS no-AG 90hz+ Achieva Shimian QH270 and Catleap Q270 - Page 77

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 #761 of 4784
biggrin.gif i see so catleap have VESA mounting

already purchase the catleap from dream seller,
gonna wait until 5 march
post #762 of 4784
Quote:
Originally Posted by ToastyX View Post

This is the real deal. It can actually do higher refresh rates properly, and NVIDIA users might be able to get more than 85 Hz if the pixel clock is not limited to 330 MHz.
The 97 Hz limit seems to be due to the pixel clock hitting the DAC limit of 400 MHz. I bet it could hit 100 Hz if the timing parameters were bumped down a bit, but I don't have an NVIDIA card to test this with.

You're right, Here is 100hz on Catleap with Manual Timings.
Not sure what the effect is with decreasing the total vertical pixels.

aaYqs.jpg


http://en.wikipedia.org/wiki/RAMDAC
Quote:
As of 2006, the DAC of a modern graphics card runs at a clock rate of 400 MHz. However, video cards based on the XGI Volari XP10 run at 420 MHz DAC. The highest documented DAC frequency ever achieved on a production video card for the PC platform is 550 MHz, set by BarcoMed 5MP2 Aura 76Hz by Barco. However, DOME Md8/PCI supports up to 2560x3200@68Hz over a single output, which would have 810 MHz pixel clock rate under VESA GTF calculation.

Edited by necriss - 3/2/12 at 9:32pm
post #763 of 4784
just found out about this monitor and i plan to purchase the catleap from dream on ebay . If anyone can answer this i wont have to wait till monday to buy it . Do i need to buy some type of adapter to run this monitor in the United States, or will our voltage work properly for the plugs it comes with.

( Not sure it matters but i also have an xbox i dont use and i think someone was saying i can use the adapters from that )
post #764 of 4784
Quote:
Originally Posted by donnydorko View Post

just found out about this monitor and i plan to purchase the catleap from dream on ebay . If anyone can answer this i wont have to wait till monday to buy it . Do i need to buy some type of adapter to run this monitor in the United States, or will our voltage work properly for the plugs it comes with.
( Not sure it matters but i also have an xbox i dont use and i think someone was saying i can use the adapters from that )

All you need is a typical power cable that comes with a monitor or PSU. Like this but a three prong for US usage:
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post #765 of 4784
Quote:
Originally Posted by necriss View Post

You're right, Here is 100hz on Catleap with Manual Timings.
Not sure what the effect is with decreasing the total vertical pixels.
aaYqs.jpg
http://en.wikipedia.org/wiki/RAMDAC

Hey Necriss what video card are you using to achieve those results? Also, have you gamed with it and has tearing gone away compared to 60hz? I would assume so, but just want to be sure. Thanks:thumb:
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post #766 of 4784
GTX 580, haven't tried gaming on 100hz yet. Might use HL1 test it.
post #767 of 4784
If you have an extra dual link dvi cable you should try swapping it and see if the 100hz holds. Would let us know if it is indeed the cable that comes with the catleap that is allowing it.
post #768 of 4784
Don't have another dual link cable sorry.

Tried a bit of hl1 on 100 fps synced with refresh rate, very smooth compared to 60.

EXmx2.jpg


I doubt its the cable allowing it, the EDID data for Catleap has no Max Pixel Clock limit. Whereas the Shimian does.

QnrdQ.jpg



Shimian limited to 250 max pixel clock.

71700c3b_Capture.PNG
Edited by necriss - 3/2/12 at 10:11pm
post #769 of 4784
i understand the typical power cable, i have one spare from an xbox, but whats the in the picture on the right side?
post #770 of 4784
Isn't the reason monitor manufacturers limit the refresh rate on their monitors because the extra work the monitor has to do can burn out something inside or something like that? I know that some of you ran monitors at 75hz or something like that just fine but since the Catleap can do up to 100Hz so far why don't catleap just sell it as a 100hz monitor and make more cash?
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Overclock.net › Forums › Components › Monitors and Displays › (Reviewed) $400 2560x1440 IPS no-AG 90hz+ Achieva Shimian QH270 and Catleap Q270