3870X2 voltmod thread

**Vatos_locos** · 04-25-2008, 08:41 AM

Originally Posted by LardArse

i've done the same pcie chip vmod and it worked, hipro has similar mod too, i dont understand, how 200ohms feedback with 5k to ground can raise pcie chip volts to 2.4v? it barely raised a bit over default for me.

Sam Can You post that mod ? pleaze

**Martin.v.r** · 04-27-2008, 02:43 AM

Ned help to vmod GeCube 3870x2 X-Turbo
It is a different cart from others 3870x2

MAX volt set in bios ? org: is it 1.304V in 3D

**Vatos_locos** · 04-27-2008, 02:49 AM

post the back side of the card

and if you can tell us what is written on theses chips

**jimmyz** · 04-27-2008, 02:49 AM

Originally Posted by Martin.v.r

Ned help to vmod GeCube 3870x2 X-Turbo
It is a different cart from others 3870x2

MAX volt set in bios ? org: is it 1.304V in 3D

can you get some clear pics of the board, both sides.

**jimmyz** · 04-27-2008, 02:54 AM

Originally Posted by chris.y2k.r1

Huh?

XP Supports 4 cores just fine. I'm not having issues with the Core Clocking or CrossfireX - My issues are with the utilities.

I've got 20K in 3DMark06 and there's no way with an E8400 that I'm getting that score w/ 1 card.

It works.

No it doesn't, you need vista to run quadfire, the xp drivers do not support Crossfirex. 20,000 is not proof I can do more singe card.

**Martin.v.r** · 04-27-2008, 03:03 AM

it stop gpu at 891MHZ an mem run 2000MHZ MAX 877 is ok on gpu np

**Martin.v.r** · 04-27-2008, 03:20 AM

CHIP ON back side,is

NEXSEM
NX 2420
CM 0719

http://www.nexsem.com/pdfs/2420DS.pdf

**Vatos_locos** · 04-27-2008, 03:47 AM

both are the same nexsem ? if yes this is the Gpu regulators post some good clear pic's from there

**Martin.v.r** · 04-27-2008, 03:58 AM

both are the same

2 x NEXSEM
NX 2420
CM 0719

http://www.rage3d.com/Board/showthread.php?t=33915340
http://www.hardwarezone.com/articles...479&cid=3&pg=2

**Martin.v.r** · 04-27-2008, 05:59 AM

sorry can not get a nice foto

the 2 chip from,the top is

VHCT
125A
http://www.digchip.com/datasheets/pa...parts_7461.php

an

ICS
7336148
0721
9DB104BFLF
http://www.hkinventory.com/public/OfferInventResult.asp
is it ok ???

**Vatos_locos** · 04-27-2008, 06:38 AM

we need some good photos from the nexsem's to find out hot to mod the card :/

as from the other side the VHCT is not the chip we are looking :p
The ICS i can't find anything

let's start from the nexsem's first

**Martin.v.r** · 04-27-2008, 07:05 AM

ok i try to get a nice foto,hmm is this ok?
VHCT

**Martin.v.r** · 04-27-2008, 08:24 AM

got IT from httphttp://www.digit-life.com/articles3/video/rv670-3-part2.

html://www.ixbt.com/video3/images/rv670-3/gecube-3870x2-scan-back.jpg

http://www.ixbt.com/video3/images/rv...scan-front.jpg

**Martin.v.r** · 04-27-2008, 08:25 AM

here you got a nice foto
http://www.digit-life.com/articles3/...0-3-part2.html

**Vatos_locos** · 04-27-2008, 08:28 AM

we need clear pic's :/ try to put the card on a scaner if you cant take a hight res pic

the VHCT is not the chip we are looking

and the links are dead

**Martin.v.r** · 04-27-2008, 09:04 AM

http://www.digit-life.com/articles3/...0-3-part2.html
http://www.ixbt.com/video3/rv670-3-part2.shtml
links are dead ?? not here

you can se nice foto there

**Vatos_locos** · 04-27-2008, 09:20 AM

too blur

i need to see the traces on the pcb of the card let's wait if someone can post some hight res pic...

**T_M** · 04-27-2008, 05:23 PM

If you are using MS Paint to save JPG's then please stop!

**Martin.v.r** · 04-28-2008, 01:12 AM

# 118 ?
why

**Vatos_locos** · 04-28-2008, 03:35 AM

because it's making them more blur :p

**Vatos_locos** · 04-29-2008, 08:00 AM

Martin.v.r for the nexsem's try to find a resistor that is connected directly with the FB ( pin 13 use the dot to find the pin ) and the other side of the resistor should be connected to the ground if you find the wright resistor the messure the ΚΩhm and tell us the number you have to find one for each nexsem and they have to look identical

and post a good pic of the area where the nexsem's are one pic that we can see the traces od the pcb

**TyphooN** · 06-15-2008, 11:39 AM

I have an EK full cover nickel waterblock on the way. I was just curious about what voltage on the core would be reasonable for 24/7 usage and at what temperatures. The card I am using is a Sapphire 3870x2, 1.304v stock. The bios editor that I use allows up to 1.40v, would this be safe or should I use a lower voltage?

**BAGZZlash** · 08-27-2008, 09:50 PM

Originally Posted by RampageTweaker

Don't know of this is the right topic to ask it, but it isn 't worth it to open a new topic. But does someone has the datasheet of the VT1165MF for me? Can't find it on the internet. It's for the HD2900GT ref. design, the Vmods aren't known atm.
Thanks

I'm sorry, is there a VT1165MF datasheet already? If you have one, could you send it to me?