Post your 4890 overclocks

Krayzie135 said:
i said in my post it was a joke...

im running 940/1100 stable right now...ill have to see what more i can get
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Use OCCT gpu test. IMO the most dead on gpu stability test out there because of tis artifact detection option.
 
910Mhz core 1100Mhz RAM is the best I've managed so far ATITool artifact free. Oddly 960Mhz core "passed" ATI/AMD's built in test but ATITool's artifact scanner went nuts and actually crashed the display driver... which just tells me that the CCC's "test" is going to result in a lot of strange behavior and dead 4890s if they don't fix it.
 
DeadSkull said:
hd4890porn.jpg


Played warhead for about 30 mins at those clocks np.
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What shell mod is that?
 
Well here's stability level at these clocks...definetly not 24hr stable or 1 hr stable.

All this testing was done at ambient temperature 63-65F. Yes I have my windows open.

103Ghz.jpg


103Ghz11GhzWarheadBench.jpg


1033Ghz1175GhzWarheadrun.jpg


spaceballslarge026xd.jpg

Waaaaaaaaa

1050Ghz10GhzWarheadrun.jpg
 
The ATITool artifact scanner is pretty much the quickest way I've found to see if your OC is stable... very similar to the OCCT thing I guess. Still can't get above ~920Mhz core stable here. Screwing around with RivaTuner and overvolting but I don't want to kill the damn thing.

Also, DeadSkull, man... crop and resize yeah? I've got a 26" and that's still a pain.
 
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I benched mine at 900/1100 and got a slightly higher score than at 925/1050. I ran at 930 also and didnt see much difference. I am staying at 900/1100 24/7. xfx vanilla cards.
 
My screenshot. First try at 940 and 1125. HIS.......I'm happy here. I only run at 1600 x 1200 at highest settings. It flies now. 42 % fan setting.

 
Checked for artifacts at all?

Fans on these things are /horrible/. At 100 it is literally like a hairdryer. ATI, I hate you so much right now.
 
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silent-circuit said:
Checked for artifacts at all?
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If you are asking me. I've played a few games and never saw any glitches or probs at all. And I've run Furmark for 20 minutes and saw no glitches or tearing. Been playing at this clock for a week. I won't push it. I'm very happy as it sets now.

Painkiller..Overdose
Farcry 2
Unreal 3
Halflife 2
Team Fortress
 
ewiz.com ran out of the the vanilla XFX 4890. Got them to knock $15 off the XT 875 MHz version. Soon as I get it I'll see what I can come up with.
 
sirmonkey1985 said:
yeah even my corsair 550w gives out with my 940@ 3.4ghz and 8800GT@ 760/1890/1015 both at full load.. so id expect the 500 not to be able to handle the 4890.. time for an upgrade.. :p
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I decoupled some relays and eps manifolds and diverted more auxulary power to the graphic engine core. Who needs life support. Some of the VRM phase 2 reading are quite distributing. How high can it tolerate over 91?

wowtuc.jpg
 
SuAsDu said:
Nice challenge.. is there anyway we can get a score board on the 1st post? its going to be hard to read through all these posts to see who is the fastest.

GPUz / CCC Validation isn't much.. its just a Suicide Screenie.. Any way we can validate stability? Maybe have it like 3DMark (badword) stable? Or crysis or something?

Just a thought.

- Ton
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That is fine, what would you guys like to see? Just a clock list or benchmarks? Or both?
 
here is my overclock, fan has to be atleast at 70% because I get artifacts as soon as the temps hit 70's, with fan at 75% the temps don't even hit 50's, here is my vantage score with i7 running at 3.7.

hd4890oc.jpg


AND DID I SAY I AM IN LOVE WITH WINDOWS 7, BUILD 7077 FEELS LIKE IT IS READY FOR PRIME TIME, AND THIS THING BOOTS IN 15-20 SECOND FROM LOGO TO DESKTOP. AND EVERYTHING JUST WORKS
 
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Has anyone yet found out what speed are the memory chips are rated for on HD 4890s?
 
DeadSkull said:
Has anyone yet found out what speed are the memory chips are rated for on HD 4890s?
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1000Mhz, at least for this first run. Supposedly later high rated factory OCed models will have faster stuff.

Also, got up to 985Mhz artifact free on the core, but the amount of vcore that took was a little much. Think I'm just going to stick with 900/1000 at stock vcore for now.

FEAR 2 with 8x edge detect AA at 1920x1200 all max runs surprisingly well with a single card. But then, FEAR was never a super GPU intensive game.
 
silent-circuit said:
1000Mhz, at least for this first run. Supposedly later high rated factory OCed models will have faster stuff.

Also, got up to 985Mhz artifact free on the core, but the amount of vcore that took was a little much. Think I'm just going to stick with 900/1000 at stock vcore for now.

FEAR 2 with 8x edge detect AA at 1920x1200 all max runs surprisingly well with a single card. But then, FEAR was never a super GPU intensive game.
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Wow...I better dial back my mem clocks then. No sense in damaging this card, but the bandwith sure is nice, sort of.
 
Kicks off an 125 gb at 1000 mhz, sure nice.


tbh, 135 gb is all you need, you just wont notice more performance with the shader power, when you start to hit 2560x1600 /W aa you can start to increase mem freq, but that would require quadfire.

nice to see 1000 mhz on those beasts with vanilla cards! if wasnt going on a drinking holiday to denmark, i would have bought one of theese for fun.

Even though i dont need with 4870CF.
 
Got my cards a day early, with CF I was only able to pull 900/1100 stable. Without CF I so far got 950/1150.

In 3dm06 I beat my i7 239xx score with my 2nd gaming rig *in sig* with the 4890's. I got 25150. :)
 
Ok, I got to 1Ghz :D but I had to do a voltage mod in the bios to get me there. other then that, all good.

I need to test if can do crossfire at these speeds. I sure hope so. :cool:
 
The memory i believe would make more diff then the core, only because the only games that tax the card are games where huge bandwidth is a must.
 
Bad news, 1Ghz crossfire = no go. 950Mhz is my highest I can get with CF enabled. Anything higher then that is automatic lockup.
 
I'm happy enough with 900/1000 CF at stock voltages with zero artifacts at 40% fan (it will run the fan much lower on auto, but 100+C VRM temps scare me... not that I know if they are at all accurate).
 
LOCO LAPTOP said:
Bad news, 1Ghz crossfire = no go. 950Mhz is my highest I can get with CF enabled. Anything higher then that is automatic lockup.
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950Mhz crossfire is still good. I wonder what the issue is b/c your psu is certainly up to the task.
 
I can run OCCT GPU test with 0 errors for 30 min no higher than 910mhz Core, 985mhz memory. A bit disappointing, perhaps -- any higher frequency on either core or memory and OCCT begins reporting intermittent errors after about 10 minutes.

With the fan set to auto, GPU core temp climbs to 88C after 10 minutes. At this temp, the fan automatically runs at 45 %. At this speed, fan is audible but not too loud. I can get temps down to upper 70s if I turn fan to 65%, but it's too loud for anything but benchmarking. However, there seem to be fewer errors at this temperature.
 
ok so heres a non joking post of my clocks...i think this is where i can max out without volt-modding, that is if i can figure out how to do that


940/1100 - this is what the second picture should have looked like...i sort of botched it



940/1145 - my max OC
 
I'm using Accelero S1 Rev.2 + 120mm fan + side 120mm fan @ <20db. I notice how good the ati stock cooler is at dumping heat out of the case. I notice the heat builds up at the base of the red heatsink and back. The VRM are pretty hard to cool down. So far I tried to get a under 90*c vrm temps under 100% load so just testing with 900mhz/1000mhz. I notice they can get pretty high and my card shuts it off if it reaches over 95-105*c+ or my psu hit limit. When I set it to > 925mhz/1100mhz at 100% load the temp keeps on raising over 99-100+*c vrm and keeps going 1*c every few min.

4890oc2.jpg


so%20nicht.jpg


GKAC12cm.jpg
 
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Running my vanilla XFX 4890 at 950core/1100vram with 40% fanspeed. Temps are about 48 idle/60-70 load.

Was able to clock to 990core/1200vram at 100% fanspeed but the thought of leaving a hair dryer on didnt appeal to me. Maybe in the winter as a space heater..
 
I haven't flashed my BIOS -- you can use RivaTuner and a plugin to set voltage under any BIOS, the ASUS BIOS is not necessary.

I've decided I'll be running 900/1000 and one bump above stock voltage for total stability and good temps (VRMs and Core stay under 80C with stock fan on auto, keeping it quiet) unless I switch to some other form of cooling.
 
silent-circuit said:
I've decided I'll be running 900/1000 and one bump above stock voltage for total stability
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I have the same frame of mind. 900/1000 seems pretty good, but I would still like to see what else is under the hood. For now, this is a good starting point for me as it is stable at these clocks. Will try again tomorrow.

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Not very lucky here: Furmark stable only at 935/1000 and temps up to 88C at default fan speeds.
Autotune 965/1105 but crashed Vantage after most of the tests.
 
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I am now at 910/1100 and I may just leave it at that if I can manage to edit out my BIOS so I do not have to keep using the CCC to set my clocks. Running great, but a tad warm for my tastes. 81C with a 45% fan speed on load.

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Surprised at how cool this card is. Much more cooler than my Toxic HD4850 and VisionTek HD4850.

A quick view into my system with the Diamond OC edition 4890.

4890loadfurmark.JPG
 
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