A couple of issues with my new Vega 56.....

[StevieP]

I've tried dropping the refresh rate to 100 and 120 (and a 3rd but can't remember the number) and the flickering persists! It's only if I drop it to 60 does the picture remain solid!

I'll be chuffed to bits if this can be fixed with just a new cable - can anyone recommend me a "better" displayport cable?

 

[docsonic]

I use this one with my vega 56 & 1440p panel although my panel is 60hz.
Accell B088C-007B

https://www.reddit.com/r/pcmasterra...liday_reminder_on_quality_displayport_cables/

Regarding minimums perhaps your 2500k is holding you back there?

 

[StevieP]

Yeah, I'm assuming that my 2500 will be a bottleneck so performance-wise I was expecting things not to be perfect - to be honest I'm more concerned with the flickering so I'll see if a new cable fixes things!

 

[henson0115]

what driver are you using? specifically. this is most likely a cable issue, however some revisions of the driver have had known flicker issues, which are not present in the latest driver on my machine at least.

 

[StevieP]

what driver are you using? specifically. this is most likely a cable issue, however some revisions of the driver have had known flicker issues, which are not present in the latest driver on my machine at least.

I am just using the most recent on the website - version 18.12.2 I believe!

Regards which displayport cable to use, am I right in thinking that I want the 1.4 version for 1440p at 144hz? Also, is there any reason I can't also try a HDMI cable for comparison - will this handle 144hz??

 

[henson0115]

I am just using the most recent on the website - version 18.12.2 I believe!

Regards which displayport cable to use, am I right in thinking that I want the 1.4 version for 1440p at 144hz? Also, is there any reason I can't also try a HDMI cable for comparison - will this handle 144hz??

1.2a is the min for freesync and carries enough bandwidth for 1440p at 144hz, however you should be able to use a 1.4 cable without issue, although your monitor likely only has a 1.2a port anyway. in regards to HDMI, its Dependant on your monitor for freesync; i have 2 monitors both freesync, 1 aoc which will only do freesync via displayport and 1 lg superwide which will do freesync over hdmi. whilst freesync may not work over HDMI, you could still try swapping temporarily to see if the flicker is still present or not.

 

[StevieP]

Quick update on this for anyone that has chipped in - I'm in the process of experimenting with a different displayport cable and *touch wood* so far it's not produced any flickering or corruption (certainly while on the desktop anyway!)

My only issue is the cable is waaaay too long for my needs! (first world problems eh!)

 

[henson0115]

Quick update on this for anyone that has chipped in - I'm in the process of experimenting with a different displayport cable and *touch wood* so far it's not produced any flickering or corruption (certainly while on the desktop anyway!)

My only issue is the cable is waaaay too long for my needs! (first world problems eh!)

great news! stick with acell cables if you can they always work

 

[StevieP]

great news! stick with acell cables if you can they always work

I've no idea what sort this is - I've had it for years - but it seems to be working!

Looks like my only issue now is going to be my 2500K bottle-necking my system - having run the benchmark test on Dirt Rally both with my 970 and the new Vega 56 I got the following results:

GTX970

Average FPS - 129.35
Minimum FPS - 101.83
Max FPS - 144.46

Vega 56

Average FPS - 139.99
Minimum FPS - 94.15
Max FPS - 196.82

Now obviously the max figure is greatly improved but the minimum FPS figure has dropped - should I be concerned about this or does it indicate a problem with the card? I'm aware than my CPU will be having an effect but surely it shouldn't drive the max FPS down??

 

[henson0115]

I've no idea what sort this is - I've had it for years - but it seems to be working!

Looks like my only issue now is going to be my 2500K bottle-necking my system - having run the benchmark test on Dirt Rally both with my 970 and the new Vega 56 I got the following results:

GTX970

Average FPS - 129.35
Minimum FPS - 101.83
Max FPS - 144.46

Vega 56

Average FPS - 139.99
Minimum FPS - 94.15
Max FPS - 196.82

Now obviously the max figure is greatly improved but the minimum FPS figure has dropped - should I be concerned about this or does it indicate a problem with the card? I'm aware than my CPU will be having an effect but surely it shouldn't drive the max FPS down??

you can temp improve the mins by ocing your 2500k a bit further, to 4.6 for example(used to run mine at this without much issue) but yea ideally you would prolly wanna start looking at replacing it when you can. see if you can grab a 2600k or 2700k cheap, my mate did this when i told him to, mins went up noticeably.