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The New GPU 'Merry Christmas' Thread

LtMatt said:
Yeah i think i might need to make mine more aggressive the top card reached 94c and started throttling after a while of playing bf4 online with silly high fps, this was with the fan profile i posted previously. The bottom card seemed ok at around 88-90c. If i had a bigger case i think id be ok.

I just set the power limit at +50%, though as we know this will not stop the card from thermal throttling if temps rise. Not sure about my vcore its possible but its not a very large core overclock so i doubt it.

EDIT

-0.062mv gave me a black screen while loading BF4 first time. -0.050mv seemed stable, but needs a long testing session.
Click to expand...

See I get rubbish fps in BF4 with my 290CF and worse than I'd expect with 7950CF. Both cards sometimes drop into the 70 or 80s for at least long enough for me to spot it (by the FPS counter, I can't really notice the dip).
I play with VSync on though so don't know what my maximums would be.
Considering the performance I got with a single 670 I'm very disappointed with my 290CF. Even a fresh install doesn't help. Could my 4.3GHz OC (on both rigs) be bottlenecking?

My fan profile keeps my cards in the 70s during BF4, does get louder than any recent cards I've used, but not room shakingly loud as we're often lead to believe.
Putting the fans on 100% does get them to a volume where it sounds liek they're spinning so fast something's about to snap off though. Not that I set it to 100% for anything other than to see what 100% sounds like!

Not sure what -0.05mv is in the scheme of things, can't imagine it'll make any massive difference though, temperature wise or power draw wise.

When I set a custom fan profile I usually set the fan manually until I find the loudest setting I'm comfortable with it running at for an extended time and then set that at the highest temperature I'd like it to run at for an extended period. After that I increase the fan speed quite quickly.
Then if that doesn't work you have to decide if you want it to run hotter or louder...
 
I'm experimenting with reducing AUX voltage. I just tried -0.030mv and had no problems in BF4 and i did notice slightly lower temps. Will keep testing.
 
Looking good Matt, good choice on the 290's. :)

Only problem is you're making me want to start tweaking and clocking mine, and I haven't got enough free time to actually do it!

Keep the info coming mate, it's all very much appreciated by those of us with less knowledge/skill/time/cojones. :D
 
LtMatt said:
nY4hlhr.jpg
Click to expand...
That a Nice memory Bus Width & Bandwidth you have on the second one there..:p
 
Confused Stu said:
Looking good Matt, good choice on the 290's. :)

Only problem is you're making me want to start tweaking and clocking mine, and I haven't got enough free time to actually do it!

Keep the info coming mate, it's all very much appreciated by those of us with less knowledge/skill/time/cojones. :D
Click to expand...

I'm not really going to be doing much overclocking, for a while at least. Trying to get voltage, temps and fan speed down as much as possible. Stock is more than fast enough for my gaming needs.

chaparral said:
That a Nice memory Bus Width & Bandwidth you have on the second one there..:p
Click to expand...

ULPS turns the second card off so hence the low bandwidth.
 
Orangey said:
Haven't touched it yet, but I assume it works the same as PLL on a CPU, you experiment with moving it up/down and see if it helps with stability (AFAIK it's supposed to help keep the voltage stable).

http://en.wikipedia.org/wiki/Phase-locked_loop
Click to expand...

Interesting. Gonna try it -100.

EDIT

Make that -87 as the voltage never seems to stick to what you set it to. Infact it lowers itself when extra notch, first when you click apply, and then when you load that saved profile.
 
Hi matt ~50-55% fan speed is enough to keep these cards at the rated clock speed. Some things that may be of use. (Most you probably know akready but just incase)

94deg = rated clock
95deg = lower clock

The cards can hit the rated clock at 94deg provided the fan speed has some head room.

My settings for 1 card were:
90deg target
70% max fan.
Its important for powertune to know that it has some fan speed to play with.
Although at these settings the fan will sitt around the 50-55% it wont get near 70% mark in bf4 and will be at the rated clock speed.

I would be wary reducing the core voltage for gaming as the memory voltage seems tied to it and as you found out can cause instability/blackscreen.

With 2 cards you might have a small difference but I did not use a custom fan profile as i didnt need it.

Basically with a custom fan profile if your max fan speed in powertune is still 55 it could be causing a drop in clocks . As even though you have set your fan to increase via afterburner powertune will not be aware of this.
Hope some of this is of help.
 
weldon855 said:
Hi matt ~50-55% fan speed is enough to keep these cards at the rated clock speed. Some things that may be of use. (Most you probably know akready but just incase)

94deg = rated clock
95deg = lower clock

The cards can hit the rated clock at 94deg provided the fan speed has some head room.

My settings for 1 card were:
90deg target
70% max fan.
Its important for powertune to know that it has some fan speed to play with.
Although at these settings the fan will sitt around the 50-55% it wont get near 70% mark in bf4 and will be at the rated clock speed.

I would be wary reducing the core voltage for gaming as the memory voltage seems tied to it and as you found out can cause instability/blackscreen.

With 2 cards you might have a small difference but I did not use a custom fan profile as i didnt need it.

Basically with a custom fan profile if your max fan speed in powertune is still 55 it could be causing a drop in clocks . As even though you have set your fan to increase via afterburner powertune will not be aware of this.
Hope some of this is of help.
Click to expand...

See I set mine to 90% in CCC with a max fan speed of 55%.
It hit 94/95ºC, the fan got to about 36% and the cards throttled. Now as far as I'm aware 55 is not the same as 36, but didn't stop it throttling.
I'm not having a go at you, simply that in my experience the default behaviour doesn't prevent throttling and it starts throttling before the fan gets to it's upper limit. Which to me means the system is broken.
 
GoogalyMoogaly said:
See I set mine to 90% in CCC with a max fan speed of 55%.
It hit 94/95ºC, the fan got to about 36% and the cards throttled. Now as far as I'm aware 55 is not the same as 36, but didn't stop it throttling.
I'm not having a go at you, simply that in my experience the default behaviour doesn't prevent throttling and it starts throttling before the fan gets to it's upper limit. Which to me means the system is broken.
Click to expand...

No problem, im just giving some info of my experiencd and what caused conflicts with powertune. Powertune and afterburner dont seem to work well together. Snd sometimes even though the power limit says +50% in afterburner it could be 0 in powertune.
 
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