Viewsonic XG270 strobing at 60 hz

[Davidson999]

Hi,

I have a two question - can I achieve bfi at e.g 60 hz on this monitor by e.g some soft?

if not...

I found benq XL2411P - for me look like perfect as second monitor, but is it possible to achieve bfi at lower than min. 60 hz?

Thank You in advance for your answer

[nuninho1980]

You can get ULMB + IPS panel for single strobe 60 Hz or less but you need mod -> https://www.google.com/url?sa=t&source= ... bFW4jxJEzv

[Chief Blur Buster]

XG270 does not support single-strobe 60Hz (without assistance of software BFI to convert 120Hz strobing to 60Hz strobing)

I should mention that the upcoming ViewSonic XG2431 has true hardware-based single-strobe 60 Hz built into it.

[Davidson999]

Can You explain how to convert 120hz to 60 hz strobing? And what soft I must use?

[Chief Blur Buster]

Can You explain how to convert 120hz to 60 hz strobing? And what soft I must use?

Software based black frame insertion. It looks like www.testufo.com/blackframes (view this at 120Hz PureXP+)

The software must have software-based black frame insertion built in. Example softwares is RetroArch, WinUAE, and GroovyMAME.

[darkstorm]

XG270 does not support single-strobe 60Hz (without assistance of software BFI to convert 120Hz strobing to 60Hz strobing)

I should mention that the upcoming ViewSonic XG2431 has true hardware-based single-strobe 60 Hz built into it.

Will the XG2431 work simultaneously with BFI and VRR?

Example usecase - device like the MISTer FPGA which simulates old consoles - refresh rate can be things like 59.x/60.x depending on what console it is simulating - would the XG2431 be able to handle the non-standard refresh rate while doing BFI?

[Chief Blur Buster]

Will the XG2431 work simultaneously with BFI and VRR?

Simultaneous strobe+VRR is not supported in XG2431.

You can instead, alternatively use Quick Frame Transport (VT4500 60Hz) + RTSS Scanline Sync, to get similar low strobe lag if using a PC-based emulator. That can produce lower input lag than the original machine (and MiSTeR), because a 60Hz refresh cycle is transmitted over the video cable in 1/240sec, and refreshed onto the screen in 1/240sec. A bit of a latency cheating, but it's a feature of 240Hz panels with custom quick-refreshing 60Hz modes (like using capped VRR or using Quick Frame Transport).

Custom fixed-Hz and strobe is supported in an analog continuum from 59Hz to 240Hz, so you can use any Hz such as 83.2456 Hz or whatever custom rez your MiSTeR outputs, as long as within that range. You don’t necessarily need VRR to support custom fixed-Hz.

Also MiSTeR doesn’t support VRR anyway.

You probably meant to ask “Does XG2431 support BFI at odd refresh rates output by MiSTeR?”.
The answer is YES! As long as the fixed Hz is within 59-240 Hz.

[darkstorm]

Thank you.

[Chief Blur Buster]

Thank you.

You are very welcome!

P.S. I believe you made the right choice of one of the best possible desktop 240Hz LCDs for MiSTeR, from a latency perspective! Another bonus is that XG2431 is one of the few 240hz panels with low input lag at low refresh rates.

Most 240Hz panels do a poor job of low-latency fixed-Hz 60Hz due to buffered scan conversion. (This doesn't apply to capped VRR, or outputting 60fps-in-240Hz, or 60Hz-Quick-Frame-Transport though -- but applies to high latency generated from trying to do 60fps-in-60Hz standard signals on a 240Hz panel).

The XG2431 panel is one of the few 240Hz panels that are true horizontal-scanrate multisync, with panel refresh syncing to signal refresh in a 1:1 horizontal scanrate match without internally buffered scanrate conversion. So it's wonderfully low latency for low-Hz such as 60Hz -- non-strobed 60Hz latency is actually very similar to a native 60Hz CRT (to an error margin of LCD GtG and the HDMI/DisplayPort transceivers/micropacket buffer -- approximately 2-3ms totalled). It's actually very hard to get lower 60Hz lag on a 240Hz panel than the XG2431. I think once XG2431 hits reviewers, it'll be reviewed as a great jack-of-all-trades "low-lag-at-any-Hz" display. I hope. Knock on wood.