Yup, found it, a 100k variable resistor from pin 4 to ground should do the trick.Quote:
Originally Posted by Eldonko
Rest of the card:
front
back
Printable View
Can you follow the trace from pin 4 (FB) to the resistors or contact points? Not so easy to mod direct to PWM.
Yes, there is one open place to solder to.Quote:
Originally Posted by Eldonko
I think the regulator for vmem is RT8105 but I can't seem to find a datasheet.
Hi.
Can anyone point me out to a guide for increasing my 3850 voltages using software?
It would be apreciated.
Also ATI tool isnt detecting my graphics cards, I have the latest beta version and it doesnt detect them. And if anyone knows how I can overclock my second card beyond what CCC allows, it would be appreciated. Thanks.
try a different version of atitool, 0.26 is usually the best. If it wont work use rivatuner. You cant increase voltage via software, closest you can do is flash a BIOS with a touch more voltage if you can find one.
YES!!! :) It's work!!! :up:Quote:
Originally Posted by Eldonko
ohhh, my pictures wrong. R1270 don't remove - remove end replace R640 (bottom C657) I correct it now in my post with pictures. Sorry :(
I'm remove R605&R615 and replace R640&R604 resistors to 330kOhms and get 1.34V in 2-D and 1.4 in 3-D on trimer 100Kohms. Trimer set to 47kOhms - 1.46V in 3D and 1.4V in 2-D
Awesome, :clap: pictures please! I may do it myself.
Did you actually remove those resistors or just bridge them with 300kohm?
Thanks. Please see my thread on bios modding to the GDDR3 Gigabyte 3870 and help me out if you can.Quote:
Originally Posted by Eldonko
I need some help :)
Before i solder anything and make it really bad :P
I've got 2 Saphirre HD3870 Ultimate (blue PCB)
Where should i solder my VR for VGPU mod ?
Here is the picture
http://images0.hiboox.com/vignettes/...48e5f20f30.jpg
Thxs a lot for the amazing job you have done here !
I'm a bit tired and don't want to read all the pages lol. Can someone tell me if there are any software programs that you can up voltages with? I remember using ati tool with my x1950xt to do so.
6 posts up.
Quote:
Originally Posted by Eldonko
ASUS EAH 3850 TOP on air, vgpu 1.62v vddr stock :
#3 @ 2006 @ hwbot.org -> 14648 Points
http://img166.imageshack.us/img166/9098/2006oi5.th.jpg
http://www.hwbot.org/result.do?resultId=742047
#5 @ 2003 @ hwbot.org -> 45332 Points
http://img236.imageshack.us/img236/8141/2003ou9.th.jpg
http://www.hwbot.org/result.do?resultId=742049
With 1.62 volt on air, what are your temps on that card?Quote:
Originally Posted by a1k
With 1.5v under a modified Arctic Cooling Xtreme 2900 I get 1GHz on the core, and a load temp not exceeding 48C. I was a bit concerned pumping more than 1.6 volts into it, maybe I could give more considering the temps?
http://img47.imageshack.us/img47/8793/9998752yo6.th.jpg
Temp around 75/80°c, room around 30°c .. (because of my SS...)
my SS is runing near the comp
really cold temp in Sweden you have :eek:
Cold?, I wish!:DQuote:
Originally Posted by a1k
We do actually have a heatvawe in Sweden for the moment..:cool:
It's around 30°C here in my room too, very hot for the time of the year.
If you get 75-80°C giving 1.62v I guess I could feed my card at least 1.65v.
I will try it later tonight.
Hmm, isn't 13,5k low for 1ghz core? SM2 and SM3 seems low.Quote:
Originally Posted by Clint
Yep, seems low, especially for a quad. I hit 12,400 with 850mhz and a dual core.Quote:
Originally Posted by ownage
Because he have only 873Mhz on memory...
I think theses scores are correct... :)
PS : 900 default clock, and 873Mhz set?! why? you flashed the card with wrong frequency? :D
Yup, they are correct...I don't care that much about cheating ;)Quote:
Originally Posted by a1k
The memfrequency is lower because I flashed the Gigabyte card with a Gecube bios that was unlocked. I edited the bios to default 850MHz but GPU-Z still shows the factoryclock. The Gigabyte 3850 have Hynix 1.4ns chips, and Gecube have Hynix 1.1ns chips but it works perfect.:up:
RT8802 for GPU core. Tried soldering directly to the chip, not working. Didn't found any resistor configs either. :confused:Quote:
Originally Posted by OneyedK
would any one have a dead card with an RT9619A chip on it they would like to part with? if so please PM me and we could work something out :)
Does anyone know vmem for sapphire blue PCB?
http://www.techpowerup.com/img/08-02-23/3870_toxic.jpg
trying upping your memory frequency should improve your score greatly.Quote:
Originally Posted by Clint
AFAIK software volt mods dont really work.Quote:
Originally Posted by bhavv
You can use rivatuner, gotta have 2 monitors (extended desktop - 1 monitor for each card). CF disabled. Then riva works to OC both separately. Then go into CCC enable CF. Disable extended desktop, and BOOM your done :)