The HD 4870/50 Thread

[flopper]

xtremesystems has, and there is a guide on
http://www.techpowerup.com/articles/overclocking/voltmods/153

I am running 850/1000 on water on stock vcore.
Need a modd for higher klocks.

 

[HousERaT]

Anyhow. Who's got the lowdown of the best place to learn about modding these cards. I'd rather hear it from you guys than search google. Anyone done any modding on these cards yet?

What do you want to mod?

 

[DaPoets]

Bah humbug droolz... now I have to get some 4870's.....

 

[baditude_df]

What do you want to mod?

Oh, anything. Just curious as to what mods can be done, and have been tried. Some cards can be voltmodded, whether it's a hardmod or not, doesn't matter. Last year watercooling was my big thing to try, this year I'd like to try doing some mods to videocards, motherboards etc. I love to tweak and I've been getting progressively deeper into it as the years go on. It's something I've been wanting to try, and I have a friend who specialized in circuit board soldering and whatnot, so I figure together we could get er dun without killing anything.
Voiding warantee is my only concern.

xtremesystems has, and there is a guide on
http://www.techpowerup.com/articles/overclocking/voltmods/153

I am running 850/1000 on water on stock vcore.
Need a modd for higher klocks.

Thanks.

 

[El<(')>Maxi]

First play with 4870 CF, BIOS set clocks and default VGPU (AMD GPU Clock Tool will not overclock R770 in CF mode).

EP45-DQ6 dual 8x PCIe DDR2 board (contrary to what CPU-Z reports)

 

[El<(')>Maxi]

Still working on settings.

 

[HousERaT]

Looks real good. I just got a E8500 off EBay that shows a lot of promise. I can't wait to see what both my cards voltmodded will do with it.

 

[sno.lcn]

Wanted 50K on the stock cooler so I got it.. The card didn't want 50k at first, but it didnt' really have a choice now did it?

The core is pencil moddded, getting a real volt mod tomorrow when my pots arrive. From what I've read, the pencil mod gives 1.25v but I soldered some voltage read points, and I'm getting 1.237v.

 

[HousERaT]

sno.lcn: added to the wall....... what brand card is that?

 

[sno.lcn]

Gigabyte

 

[kayson]

So I just picked up an Asus 4850. The thing is running really hot and I'm just installing XP. Should I up the fanspeed or what? If it can't dissipate stock heat with a stock cooler, Asus better be covering it with a fatty warranty...

 

[HousERaT]

So I just picked up an Asus 4850. The thing is running really hot and I'm just installing XP. Should I up the fanspeed or what? If it can't dissipate stock heat with a stock cooler, Asus better be covering it with a fatty warranty...

Yes you should. At least 50%.

 

[kayson]

Yes you should. At least 50%.

How can I do that...The Catalyst software seems to lack a fanspeed option...

 

[reznik]

with all the pencil modding n stuff u guys do isnt their like a big chance ur destroy ur cards etc...is it not risky...

and if u have how many have u bust...(just curious)

 

[HousERaT]

with all the pencil modding n stuff u guys do isnt their like a big chance ur destroy ur cards etc...is it not risky...

and if u have how many have u bust...(just curious)

Never killed a card because of a pencil mod. You just have to be careful and take your time.

 

[petteyg359]

How can I do that...The Catalyst software seems to lack a fanspeed option...

There is an option, it's just hidden in an XML file. Make a new profile called fanspeed, find it on your drive (should be "C:\Documents and Settings\username\Local Settings\Application Data\ATI\ACE\Profiles\fanspeed.xml", obviously your username, though). Find the following sections:

<Feature name="FanSpeedAlgorithm_0">
<Property name="FanSpeedAlgorithm" value="Automatic" />
</Feature>

<Feature name="FanSpeedPercentTarget_0">
<Property name="Want" value="0" />
</Feature>

Change Automatic to Manual and change 0 to whatever percent you want the fan to stay at. Remember that this is a >10k RPM fan at 100%, and will be very loud if you set it to high speed permanently. I've tried setting it to Automatic with a percentage of 100, but it doesn't seem to change anything from default behavior. If you aren't using a couple slots below your card and have $50 to spare, a ThermalRight V2, ThermalRight "8800 PWM" sinks, and a 80mm Noctua fan will cool it much better and much quieter.

 

[kayson]

Fantastic! My temperature dropped 30 degrees celsius with no noise increase.

 

[rdrash]

here is my attempt at playing with 4870s in CF, used XML file to increase fan speed to 45%.

 

[baditude_df]

There is an option, it's just hidden in an XML file. Make a new profile called fanspeed, find it on your drive (should be "C:\Documents and Settings\username\Local Settings\Application Data\ATI\ACE\Profiles\fanspeed.xml", obviously your username, though). Find the following sections:



Change Automatic to Manual and change 0 to whatever percent you want the fan to stay at. Remember that this is a >10k RPM fan at 100%, and will be very loud if you set it to high speed permanently. I've tried setting it to Automatic with a percentage of 100, but it doesn't seem to change anything from default behavior. If you aren't using a couple slots below your card and have $50 to spare, a ThermalRight V2, ThermalRight "8800 PWM" sinks, and a 80mm Noctua fan will cool it much better and much quieter.

EDIT: Found it, but it doesn't seem to be doing anything. Have I changed the proper values?

<Feature name="FanSpeedProtocol_0">
<Property name="FanSpeedProtocolProperty" value="Percent" />
</Feature>
<Feature name="FanSpeedAlgorithm_0">
<Property name="FanSpeedAlgorithm" value="Manual" />
</Feature>
<Feature name="FanSpeedRPMTarget_0">
<Property name="Want" value="0" />
</Feature>
<Feature name="FanSpeedPercentTarget_0">
<Property name="Want" value="45" />
</Feature>

 

[rdrash]

@Bad...

yes that looks correct now save it and then right click your CCC and activate the profile...believe me you'll hear if it kicks in.