ATI 4850/4870 voltmod thread

[r4st4m4n]

Are you guys using wire from spare SATA cables for volt mods? I've read that's good to use because they're so thin. If not SATA wire then what AWG? Thoughts? Suggestions?

Fans wires are generally thin or I've also used some wire from an old case. The one used for the front panel connection.

Or you can always buy few meters ..

[Barr3l Rid3r]

E


33ºC Idle @ 840Mhz / 1.32V


http://service.futuremark.com/compare?3dm06=7580874

39ºC @ 900Mhz / 1.45V Full

[binormalkilla]

Fans wires are generally thin or I've also used some wire from an old case. The one used for the front panel connection.

Or you can always buy few meters ..

Yea I have no problem buying it, what AWG though? I have a bunch of front panel connectors.........I'll probably practice with the leftover stuff and buy some spooled wire.

[sandwichamwin]

I put together a little blog guide thing of volt modding the 4850. It might help someone who is new anyway. Click here.

I managed to bench at 975mhz with an MCW60.


Just finished vmodding the 4870 then...


So... wonder how many volts it takes to kill these things?

[Barr3l Rid3r]

I put together a little blog guide thing of volt modding the 4850. It might help someone who is new anyway. Click here.

I managed to bench at 975mhz with an MCW60.


Just finished vmodding the 4870 then...


So... wonder how many volts it takes to kill these things?

How many volts did u use for 975Mhz?

[sandwichamwin]

How many volts did u use for 975Mhz?

Approx 1.42v


I just had a quick bench with the 4870. Seems like it doesn't like voltage as much as the 4850. Max on stock volts was 890mhz. Bumped the voltage by .1v and i hit 950mhz. Then not a single mhz more, regardless of voltage.

Anyone else experiencing similar things? Or have i just hit the limit of the card?

[SNiiPE_DoGG]

Approx 1.42v


I just had a quick bench with the 4870. Seems like it doesn't like voltage as much as the 4850. Max on stock volts was 890mhz. Bumped the voltage by .1v and i hit 950mhz. Then not a single mhz more, regardless of voltage.

Anyone else experiencing similar things? Or have i just hit the limit of the card?

i will have some comparisons of my voltmodded 4870's (fixed 1.36v) in a few hours hopefully

[binormalkilla]

I put together a little blog guide thing of volt modding the 4850. It might help someone who is new anyway. Click here.

I managed to bench at 975mhz with an MCW60.


Just finished vmodding the 4870 then...


So... wonder how many volts it takes to kill these things?

Hats off to ya.....excellent little guide

[jason4207]

E


33ºC Idle @ 840Mhz / 1.32V


http://service.futuremark.com/compare?3dm06=7580874

39ºC @ 900Mhz / 1.45V Full

You may want to sink those 8 black chips as well...

Yea I have no problem buying it, what AWG though? I have a bunch of front panel connectors.........I'll probably practice with the leftover stuff and buy some spooled wire.

30AWG is what I use.

[MonsterMash]

Hi,
actually i have 2 3870 in xfire, pencil vmodded and overclocked to 1012mhz, water cooled. Now i'm buying a 4870, and my purpose is to make pencil vmod and overclock it at the same freq (i want to broke the wall of 1 ghz ), always liquid cooling it, of course. Do you think it's possible?.

Thank you.