4890 highest core clock

[eidairaman1]

for the components in question, get some silicon sealant (non acetone/acetate type) place bead around the chips but not ontop of the chip to seal any contacts off, get some thermal epoxy (Arctic Silver) and Arctic Silver 5, mix in 50% epoxy and then 50% compound and put some sinks on those chips of concern.

 

[SonDa5]

The stock cooler on the HD4890 works fantastic. Wish somebody would make one like that for the HD4770.

 

[eidairaman1]

Same exact cooler on the 4870, just i believe the 4890 runs cooler due to being refined

 

[M_2]

Same exact cooler on the 4870, just i believe the 4890 runs cooler due to being refined

the cooler on 4890 has more heatpipe than 4870, it's an improvement over 4870 cooler

 

[amit_talkin]

yeah, it runs cool, only noise level is high.

 

[DV8tion]

Finally

Well I finally got my 4890 after an almost 2 month RMA through ewiz (note to self:Next time go strait to manufacturer. Ewiz is amatuer at best.)
Here's a screenshot. Stock Voltages.
edit upped the core and voltage dropped the memory running another vantage and 06 now.

 

[Wile E]

Would it not be a game that makes your system the most power ?.. I cannot say with COD 4 as i do not own it.

But the 2 games i've notice with the higher power usage has been NWN2 and Crysis were there has been around a 30-50w difference. With COH and Arma being on the lower end on total power usage.

I'l add a custom cooler on mine if i find a good way to screw a heatsink on the regs lol.

You would think that more demanding games are a better test, but it just isn't the case on my system (and quite a few others I know as well). I can run Crysis, FC2, Warhead,a nd a slew of others for hours on clocks that fail in COD4 in less than 10 minutes.

DaMulta has come to the same conclusion on his system as well. Something in COD4 just makes it really sensitive to unstable clocks.

A word of warning. You must use something better than ramsinks for the vrms. I used to have an arctic cooler s1 installed on my hd 4890 with a 120mm and 80mm fan. The 80mm fan was positioned firectly over the VRMs.

I reinstalled the stock cooler. VRMs with furmark even with the supplied arctic cooler sinks would send the VRMs over 120C (I always stop stressing the card when it gets to 120C to prevent it getting damaged, it would hit 130C+ no problem). The gpu core itself would stay ~50C, but I can't stress it properly due to VRM temps (idle core temps of 35C). The stock cooler lets the core hit upto 80C even at upto 50% fan speed. But does keep the VRMs under 100C.

Its a shame because the stock cooler becomes too loud for my system when it hits 35%.

My former setup:

http://dl.getdropbox.com/u/20407/22052009337.jpg
http://dl.getdropbox.com/u/20407/22052009338.jpg
http://dl.getdropbox.com/u/20407/22052009340.jpg

Components in question

http://dl.getdropbox.com/u/20407/22052009342.jpg

Back to the stock cooler with mx2 applied

http://dl.getdropbox.com/u/20407/23052009347.jpg

I used Enzotech copper ramsinks on vrms. They work beautifully.

 

[AsRock]

You would think that more demanding games are a better test, but it just isn't the case on my system (and quite a few others I know as well). I can run Crysis, FC2, Warhead,a nd a slew of others for hours on clocks that fail in COD4 in less than 10 minutes.

DaMulta has come to the same conclusion on his system as well. Something in COD4 just makes it really sensitive to unstable clocks.

I used Enzotech copper ramsinks on vrms. They work beautifully.

Dam that COD4 lol...

Just found out it's not temps that are stoping me getting higher than 950 core it's the voltage :|.. Need more testing and kinda risky when it's hot weather as it is so i'm hiting like 85c+ core .. Although i can hit over 1k core but less voltage i get errors so it has to be 1.4xx v to get it to do it .

 

[Rockinchops]

Asus eah4890 top
ccc got it up to gpu 990 mem 1160 @ 1.40 V

 

[Rockinchops]

MY 3dmarkvantage score

 

[TechnoHolic_Tim]

New to overclocking gfx cards, looking for some info.
is there some software to clock higher than in ccc? also iv herd about the asus card that can change up the volts in the software, can i do that 2 my xfx some how?
i think the answer 2 my questions is to make my own bios for the card but that sounds quite doggy and i dont no how to do it.
anyway ill c how well i can clock this card when my ek water block comes 2moro, just now if fan is at 100% i pass the ccc test at 1000 core and 1200 mem but get f***ed up back dots and display driver issues in 3d mark 06.

 

[Plug]

2x 4890 asus cards arrived today, still tweaking
i have my bios modded to 1000/1100, with BE XFX fan profile, if temps go over 70c fan hits 100%

i dont mind as its not that noisy though i use headphones for everything so i dont hear the fans at all

dam these asus`s are sweet.

 

[Reefer86]

hmmm i have my card modded to black edition specs copied using RBE and i assure you the fan doesnt go to 100% at 70c on the core. the only difference between the 2 cards fan settings is the incline of the fan speed is faster on the BE. the fan runs at 100% at 100C! you might have changed your fan settings but that is not the BE specs.

Currently i have my card running at 1000/1000 with black edition voltage and fan profile all flashed. works like a charm very stable.

 

[Tatty_Two]

I am at work so I cant post a screenie, these are max stable clocks tested by OCCT GPU, Furmark and 3D Mark 2006.........

Without Software Voltage tweak........ 1045/1150

With @ 1.425V ............ 1100/1150

Sapphire HD4890 Toxic edition

 

[Mark.Beier]

Low 3dMark score = noob oc = noob oc'er = Noob Bjoes

ps.

Furmark is ATI biased and everyone knows that 3dmark vantage performance preset is way to go