Owners of Freesync Monitors can enlarge Hz range with simple hack

by Hilbert Hagedoorn on: 09/25/2015 08:02 AM | source: | 19 comment(s)

One of the negative dependencies for AMDs FreeSync is that you are tied and limited towards the operational range in Hz the monitor is capable off. A new tool, let's call it driver mod allows you to change the parameters so you can enlarge the FreeSync range. Users in our forums report this to be working.

The hack was published last month already, yet we are seeing increased interest in it so here's a little guide. By all means this is experimental. Now the procedure is a tad technical, but you need to download the following tools:

Here's what you need to do step for step (screenshot courtesy of OC_Burner). First you extract the EDID infomation into a file:

Then EDID modification #1:

Then EDID modification #2:

Monitor.inf driver creation:

Adding newly created driver range info:

Deactivate Windows Driver signature:

Install monitor driver:

Enjoy the changed dynamic range ... We have seen users report framerates as low as 33 Hz supported.

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Fox2232
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#5163838 Posted on: 09/25/2015 08:30 AM

I may go for AOC G2460PF since it should be FSync 30~160Hz, I wonder if I can get it to 180/200Hz

- it is only 1080p, but that allows for higher refresh rate

I saw some notebook screens successfully OCed to 180Hz without frame dropping.

AzzKickr
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#5163857 Posted on: 09/25/2015 09:17 AM

1. This is more than just "a tad" technical

2. Who comes up with this stuff ? Jezus ...

Fox2232
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#5163859 Posted on: 09/25/2015 09:28 AM

1. This is more than just "a tad" technical

2. Who comes up with this stuff ? Jezus ...
Not rly. It is simple idea and author faced few obstacles with already known solution, so he did kindly include them.

I have modified writeable parts of FW in my monitor to actually get proper color of that otherwise good screen. One of reason I try to evade BenQ, as 'they had one job'...

pbvider
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#5163861 Posted on: 09/25/2015 09:30 AM

"simple hack"...just follow 25 pics for instruction.

kosh_neranek
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#5163892 Posted on: 09/25/2015 11:04 AM

Nice one hilbert!!!

Brisse
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#5163975 Posted on: 09/25/2015 01:50 PM

Okay, cool hack, but there must be a reason behind the limits that manufacturers puts into each model, right? I'm perfectly happy with the 35-90hz my MG279Q provides so I'll stick to that

schmidtbag
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#5163993 Posted on: 09/25/2015 02:16 PM

This isn't that complicated... it's just in-depth.

BoMbY
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#5164090 Posted on: 09/25/2015 05:15 PM

A little older, but still good. My BenQ XL2730Z seems to work with 32-144 Hz, only Monitor Range Limits are on Descriptor Block 3.

Edit: Original Source is the 3DCenter forum as far as I know.

ReconNinja
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#5164334 Posted on: 09/26/2015 02:08 AM

I tried following this guide for my LG 29UM67 and I got an error on the final install process. It says "One of the installers for this device cannot perform the installation at this time." I then got an INF file used by another 29UM67 user whom had success, but I got the same error using that file as well. Is anyone else getting this?

Fox2232
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#5164391 Posted on: 09/26/2015 07:38 AM

Windows version, account privileges, signature enforcement, ...

Turanis
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#5164450 Posted on: 09/26/2015 12:12 PM

Good guy Hilbert.Thanks!

Sync0r
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#5164560 Posted on: 09/26/2015 05:11 PM

Has anyone managed to download the first tool? Phoenix EDID Designer? All I get is malware from TuCows.

CalculuS
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#5164564 Posted on: 09/26/2015 05:17 PM

That doesn't look simple at all.

Are there any negative effects to this or can you just literally dump it at 1hz and it'll work?

Ferrum Master
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#5164840 Posted on: 09/27/2015 01:58 PM

Oh, very simple indeed. Thanks for the info Hilbert!

yasamoka
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#5164850 Posted on: 09/27/2015 02:50 PM

That doesn't look simple at all.

Are there any negative effects to this or can you just literally dump it at 1hz and it'll work?
No, you definitely can't dump it at 1Hz and expect it to work properly. Every LCD panel has a lower limit at which it can refresh before pixels start decaying (in terms of luminance) and you get artifacts. The manufacturers are apparently setting the minimum limit at a safe margin, just like any other manufacturer sets their product to run at a certain clock speed while it still has headroom.

This is just like overclocking, but done in the opposite manner.

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