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Message boards: Problems and Help: how to reduce GPU usage to 50%

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Rasmus

Send messa ge

Joined: 8 Sep 11Posts: 2ID: 111271Credit: 163,858RAC: 0

Message 40159- Posted: 8 Sep 2011 | 19:28:06 UTCLas t modified: 8 Sep 2011 | 19:55:05 UTC

hi

im new to this projekt and i got my GPU running now.

Ati HD 6850

but the temperatures are to high so i would like to reduce the usage of the GPU

lets say to about 50%.

i havent find any possibility to change that.

can anybody say mewhere to find this settings or if it isnt possible to change that?!

thanks a lot

: thx yes its a ATI HD6850

regards

Rasmus

ID: 40159 | Reply Quote

gazzyk1ns

Send messa ge

Joined: 2 Aug 11Posts: 419ID: 107047

Credit: 147,472,461RAC : 470,385

Message 40160- Posted : 8 Sep 2011 | 19:50:20 UTC - in respo nse to Message40159.Las t modified: 8 Sep 2011 | 20:02:30 UTC

Ati HD 6850 i think.

One thing:

Thisis a goo d tool to see your GPU details.

I do n't think the sensors are accurate, espe cially as it kee ps reporting m y fan spe ed to

me when I don't have a GPU fan. It really is a good tool for finding out the basics,

though.


Michael GoetzVolunteer moderatorProject developerVolunteer developer

Volunteer testerProject scientist

Send messa ge

Joined: 21 Jan 10Posts: 3332ID: 53948Credit: 34,290,018RAC : 38,632

Message 40161- Posted : 8 Sep 2011 | 20:02:37 UTC - in respo nse to Message40159.

I'm not as familiar with ATI cards anymore, so I can't supply much in the way of details.

As far as I know, there are no tools to limit GPU utilization the way you can with the CPU.

However, what you sho uld be able to do is u se the overclocking too ls for your card to

UNDERCLOCK the GPU. R educe all the clock speed s to their minimum s ettings. This

probably won't get you down to 50%, but it should be enough to significantly drop the

temperatures.

While you're at it, set the fan speed to its maximum.

____________

My lucky number is 75898^524288+1

Mano laivas su o ro pagalve pilnas unguri


gazzyk1nsMessage 40162- Posted : 8 Sep 2011 | 20:14:36 UTC - in respo nse to Message

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2/4

Send messa ge

Joined: 2 Aug 11Posts: 419ID: 107047Credit: 147,472,461RAC : 470,385

.

I'm not as familiar with ATI cards anymore, ...

As far as I know, there are no tool s to lim it GPU utilization the way you can with the CPU.

However, what you should be able to do is use the overclocking tools for your card to

UNDERCLOCK the GPU. Reduce all the clock speeds to their minimum settings.

That's as much as I know too, with the addition that it's very hard to underclock ATI/AMD

GPUs without flashing the BIOS, or doing something similar which is very risky and putting

your hardware in the hands of a 3rd party. The issue is complicated further by the fact

that some cards come overclocked in the box, a nd so might have a different or modified

BIOS, which confuses things. ATI cards these days come in more different forms thansomeone might expect, in that they call a mode l with DDR3 and GDDR5 the same name.

I got confused and took days to work out which one I wanted.


uBronan

Send messa ge Joined: 13 Aug 11Posts: 36ID: 108419Credit: 3,587,642RAC: 0

Message 40163- Posted : 8 Sep 2011 | 21:08:52 UTCLas t modified: 8 Sep 2011 | 21:26:26 UTC

No it is actually kinda easy

Especially on newer models

Get yourself a copy of msi afterburner at

http://event.msi.com/vga/afterburner/download.htm

{ before one ask it works on every brand / model ati/nvidia }

Whe n you installed it set it to start with windowsThen you see some bars which to set mem ory and core speed

To get our cards making less heat no ex tremes have to be done

Mine runs normally at 850 and mem ory at 1200

To get it to run withing prope r cool settings i just set the core to 700 and i lowered the

memory to 750 which gives a huge drop of temps

Remind yourself the output drops as well

But to honest many boinc projects do not need high memory speeds, this is also where i

see the biggest drop in temperature (collatz is a project which needs high memory

speeds)

Now do n ot set it be low a certain minim um o r your system will crash

The lowest at which my card still runs ok is 450 on core and 400 at memory ( effective

this is 1600 mhz since its ddr5) some set it at 300 but for me the desk top becomes

sluggish which i do not like

Each time when you change something you need to apply

Now if you found the speeds you like best temperature wise you can save it as a default

with the numbers down under in my case i have 3 settings as preset

1. performance where i set it to actually run faster 890/1260

2. high core low memory 890/400

3. low temp running 450/400

If you need any help just send me a message

As a sidenote do not mess with voltage and such if you do not know what your doing with

this tool


Rasmus

Send messa ge

Joined: 8 Sep 11Posts: 2ID: 111271Credit: 163,858RAC: 0

Message 40173- Posted : 9 Sep 2011 | 7:20:20 UTC - in response to Message40163.

in my CCC (driver panel) i can adjust my clock and memory a little bit.

but even if i drop everything to min it doesnt lower the temp very much. maybe about 8C

clock (600 - 850)mem ory(1000 - 1200)

is there any other way than by adjusting the clock?

like a hidden setting in boinc ?

thx a lot so far

RAsmus


mikey

Send messa ge

Joined: 17 Mar 09


in my CCC (driver panel) i can adjust my clock and memory a little bit.

but even if i drop everything to min it doesnt lower the temp very much. maybe about 8C

clock (600 - 850)

memory(1000 - 1200)

is there any other way than by adjusting the clock?

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3/4

Posts: 224ID: 37043Credit: 61,082,036RAC: 0

like a hidden setting in boinc ?

thx a lot so far

RAsmus

Get yourself a copy of msi afterburner at

http://event.msi.com/vga/afterburner/download.htmIT WORKS


Crystal Pellet

Send messa ge

Joined: 9 Nov 08Posts: 167ID: 31494Credit: 48,525,851RAC : 13,287


Ati HD 6850




can anybody say me where to find this settings or if it isnt possible to change that?!

Try Fred Me lgert's TThrottle.

If GPU (can also be used for CPU) tempe rature raises the spee d decreases; as

temperature goe s down the spe ed is increased aga in.

____________


roberto4u2*

Send messa ge

Joined: 11 Aug 11Posts: 24ID: 108167Credit: 60,880,364RAC: 0

Message 40259- Poste d: 13 Sep 2011 | 3:59:30 UTC

Just out of curiosity, what are you seeing your temps at where you feel they are too high?

What's the symptom you get that makes it such? Locking? freezing? shutdowns?

temperature probe? Noise?

The stock coolers on any decent (and recent) graphics card should be capable of cooling

the card to adequate levels if the case is cooled correctly and the room isn't too hot

(some more than others of course). If this is not your situation I think you might want to

address the case's cooling first if you can. It is typically a lot more beneficial in general

than under clocking your GPU and it has benefits for the rest of the computer as a whole

(especially your hard drive!). Fans are cheap. Zip ties for unruly cabling is even cheaper

still! But nothing beats a machine which is both fast as heck, cool, and quiet too.

Good cooling do esn't have to b e loud o r terribly expensive in order to be e ffective either.

With some more information on what case you have this equipment in and how many

fans it has (and where they are located and which direction they are blowing in) you might

be able to fully rectify the situation without reducing your machines performance with

nothing more than a couple of well placed fans or just changing the direction they are

blowing!


sir sant

Send messa ge

Joined: 23 Apr 10Posts: 51ID: 59272Credit: 368,400,597RAC : 247,297

Message 41898- Posted : 18 Oct 2011 | 21:51:09 UTC - in respo nse to Message40159.Las t modified: 18 Oct 2011 | 21:52:31 UTC

hi

im new to this projekt and i got my GPU running now.

Ati HD 6850




can anybody say me where to find this settings or if it isnt possible to change that?!

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4/4

thanks a lot

: thx yes its a ATI HD6850

regards

Rasmus

6850 is a cool card byitself and has a lowish tdp, if its running hot - beyond 80 is hot for

6850 considering its low tdp - then something is wrong here. First thing to do, if gpu

cooler is not dusty and airflow in the case is good enough, is to downclock the memory

(pg-s pps sieves are not memory bound, so the speed of me mory can be de creased a lot

w\o im pacting wu runtimes significantly. Lowering the shaders\core spee d will impact the

runtimes hard) , lets say by 4 times (lower), and if that cant get the temp under control,

then you need a new cooler for the card. My cards temps here:http://www.upload.ee/image/1741599/netikasti_gpude_temperatuurid_2.jpg


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