• Competitor rules

    Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.

X1900XT FPS drop on fan speed change?

mortals

mortals

mortals

Soldato
Joined
17 Oct 2002
Posts
3,103
I'm not sure if anyone else has noticed this, but on my system the FPS seems to jerk/drop for a split second or so when the fan speed changes. :confused:

I've ended up setting my fan on 45% all the time now and am getting lower temps.

I also found it interesting that in the BIOS the fan speed never hits 100% until the card is at 100ºC.
0ºC > 26%
70ºC > 32%
80ºC > 36%
88ºC > 50%
91ºC > 55%
94ºC > 59%
97ºC > 68%
100ºC > 100%
Click to expand...
Seems pretty useless at cooling :( the card only switches the cooler up when it's at 70ºC :eek: not surprised why people are seeing load temps of 80ºC

atm, now I have the fan on 45% all the time, my idle temp is 43ºC (was 55ºC) and load temps seem to reach 55ºC (was seeing over 70ºC)
 
I can just about hear it over my 120mm case fans that are running at 1200rpm (the ones u get with lian-li pc-7-plus)

I did set up some better auto speed switching settings, so when the GPU hit 60, the fan would speedup etc, but noise is noticable over 55% :)
 
Ah also, just wanted to add that you can see the screen flicker in windows aswell when switching fan speeds.

If you go into the Overclocking Settings in ATiTool then fan then set manual speed, when you click apply the screen flickers. Not sure if anyone else has noticed it or if it's my card or PSU or something :confused: :(
 
Pretty sure its normal, I think when it switches fan speeds it in effect switches profiles causing the flicker and fps to drop then return to normal.
So to start off it has clock speeds of xxx/xxx @ 26% for the fan, then when it heats up loads the next profile of xxx/xxx @ 32% and so on, even though the clock speeds stay the same.
Could be wrong since haven't used ati tool since my x850xt, but I'm sure I had the same thing then.
 
Hmm - Odd. I have an X1800XT and, for my sins, still use the CCC with fan speed on automatic. There's no noticeable (with FRAPS) drop in frames in Oblivion or the Medieval 2: Total War demo, although I can hear the fan getting faster in those games.
 
The frames don't drop much and not for long, for a split second or so. The main way to test I guess is changing the fan speed when in windows and watch to see if the screen flickers.

I only really noticed it because it was changing at 70°C. When in cs:s or quake4, it seemed to stay around 68-70°C so changes up and down every minute or so.
 
Uriel said:
Hmm - Odd. I have an X1800XT and, for my sins, still use the CCC with fan speed on automatic. There's no noticeable (with FRAPS) drop in frames in Oblivion or the Medieval 2: Total War demo, although I can hear the fan getting faster in those games.
Click to expand...

I thinks its only when using ati tool or ati tray tools not the CCC that the problems happen. Thinks its the way 3rd party programs adjust the settings.
 
dale1uk said:
I thinks its only when using ati tool or ati tray tools not the CCC that the problems happen. Thinks its the way 3rd party programs adjust the settings.
Click to expand...
Cool :)

I might have to try CCC, just to test I guess.
But it does seem more like the card than software. More of a power surge/stability problem.
 
mortals said:
Cool :)

I might have to try CCC, just to test I guess.
But it does seem more like the card than software. More of a power surge/stability problem.
Click to expand...


Looking at your sig I see you have a high end spec, but what psu have you got running it?? I presume thats also high end as those cards are very power hungry.
 
dale1uk said:
Looking at your sig I see you have a high end spec, but what psu have you got running it?? I presume thats also high end as those cards are very power hungry.
Click to expand...
I have a "Tagan TG480-U01 480W ATX2.0 SLi Compliant Silent PSU"
 
mortals said:
I have a "Tagan TG480-U01 480W ATX2.0 SLi Compliant Silent PSU"
Click to expand...


I just swapped that PSU out for an Akasa Paxpower 500W, as I was getting in game crashes at stock speeds - eg "Quake4.exe has encountered a problem and needs to close etc.", and all memory tests etc were passing fine in 2D, and it was a clean install with my X1900XT.

Seems OK now - do you get any similar problems?
 
saintly said:
I just swapped that PSU out for an Akasa Paxpower 500W, as I was getting in game crashes at stock speeds - eg "Quake4.exe has encountered a problem and needs to close etc.", and all memory tests etc were passing fine in 2D, and it was a clean install with my X1900XT.

Seems OK now - do you get any similar problems?
Click to expand...
I've not had any problems with crashing. I did have a problem in cs:s yesterday (complete lockup) but that turned out to be my VMCH.

Quake4 etc all seem to be ok.

I've just left it set on 45% atm. Just been messing around on cs:s for a hour or so and the gpu temp only went up to 50°C :)
 
You must log in or register to reply here.
Back
Top Bottom