How-to: Pencil mod your HD 3870!

Technofuzz · Apr 10, 2008

y dont u all just tape off the areas you don't want to touch..........and if you hand slips OOPS oh god good thing i had tape there LOL!!!

Random Murderer · Apr 10, 2008

DanishDevil said:
Hey guys. Trying to trade my HIS for Freaksavior's RMA'd Diamond.

I don't see an R1222. It looks like a totally different resistor pattern.

1: Is this pencil and/or voltmoddable, and by what methods?
2: Is this good for software voltage control?

no software voltage control, but it is pencil moddable using the other pencil mod, the one where you connect the two solder points.

DanishDevil · Apr 10, 2008

Just to make sure, how about this one?

R1222 is right there, but no software voltage control, right?

cdawall · Apr 10, 2008

needs a better pic DD

DanishDevil · Apr 10, 2008

That's the best I can get...

cdawall · Apr 10, 2008

select portrait on your camera it should work better for up close shots

Random Murderer · Apr 11, 2008

DanishDevil said:
Just to make sure, how about this one?

R1222 is right there, but no software voltage control, right?

that one has software control.

DanishDevil · Apr 11, 2008

Not my card, not my camera.

It does??? Ok sweet. It's a GeCube, and the cooler is pure reference. It should hopefully be a pure reference card!

Cold Storm · Apr 11, 2008

The Gecube 3870 is the one that RM now owns of mine... I some what miss that card..

DanishDevil · Apr 11, 2008

Ooh sweet! Ok good news, then.

cdawall · Apr 12, 2008

this is a pic i stole from w1z but anyway its the same as the back of my OEM 3850 256mb

and some that i took

i use the first guide right?

DanishDevil · Apr 12, 2008

Nope. That's a different resistor.

On the 3870s anyway, R1222 is the one to shade for the pencil mod. The vertical/horizontal resistor determines whether or not you have software voltage control.

PS: A scanner actually works very well for pics of the backs of cards.

cdawall · Apr 15, 2008

hmmm really i used a scanner for cpus but not cards

DC · May 2, 2008

asus 3870

hello my friends... i need your help here and now

i can't find a volmod guide for asus radeon 3870 (it's own pcb made by asus makes me angry). Can anyone give me some info?

DanishDevil · May 2, 2008

If you post a picture of the back side of the voltage regulators, like the pictures cdawall posted, then RandomMurderer will take a look.

Random Murderer · May 3, 2008

DanishDevil said:
If you post a picture of the back side of the voltage regulators, like the pictures cdawall posted, then RandomMurderer will take a look.

yep.

DavyGT · May 3, 2008

Wtf...

I got an ASUS EAH3850 512mb. The problem is that the resistance on the card never changes, always staying at 2.28ohm (20k setting) or 1983 (2000setting) on my DMM, whether I use a 2B to 6H pencil. :confused:

I done this when the card was in my case and power is unplugged. What am I doing wrong?

DanishDevil · May 3, 2008

Scratch up the resistor CAREFULLY with a nail file.

Let's say this is the resistor:

__
| |
| |
---

File it horizontally, to get past the stuff they coat the cards with. Don't file it a whole lot. Your goal is to rough up the surface, and reach the metal on the resistor so lead can fall into the grooves you create.

Then, pencil the resistor with vertical strokes. You are essentially creating trenches for your graphite soldiers to bunker in to defeat the resistance. ATi Guerilla Warfare anyone? :roll:

DavyGT · May 3, 2008

Oh! So I skipped a step that wasn't there! Ok I'll try it. :roll:

Cheers mate. :toast:

DanishDevil · May 3, 2008

Cheers DavyGT.

That was my own idea when I was doing it, and I don't know if I ever posted that here...but it helped me get the resistance down a WHOLE lot.

I'm going to be making a how-to video of the pencil mod soon, so stay keep an eye out!

DavyGT · May 3, 2008

Is transistor C664 important? I broke it off when I moved my HDD to another slot. :banghead:

Should I sticky tape back on?
The perils of getting a medium tower case I guess.

Dr. Spankenstein · May 3, 2008

Man, I HAVE to hold my tongue right now....

Someone else tell him about AS epoxy before I explode!

DavyGT · May 3, 2008

Noted. Thanks for implying the answer to my question. For now though, I just sticky taped it back on.
I'll fix it when I get the chance.

eidairaman1 · May 3, 2008

if you dont get the contacts right on spot you could do more damage than good, and with epoxy on the board you will not be able to RMA it due to that Modification.

Your better off to RMA the board.

DanishDevil · May 3, 2008

Yeah after breaking off something, I would RMA. I've seen so many 3870s RMA'd it's ridiculous.

I almost RMA'd mine because I thought I killed it (didn't break anything off though), but I did a COMPLETE rubdown with cotton balls and lots of 70% isopropyl alcohol, popped it in, and saved it.

Processor	AMD Ryzen 9 5900X
Motherboard	MSI X570S Carbon Max Wifi
Cooling	Arctic Liquid Freezer II 280
Memory	2x16GB G.Skill Trident Z Neo 3600mhz
Video Card(s)	Gigabyte RTX 3080 10GB Gaming OC
Storage	2 x 2TB m.2 nvme
Display(s)	LG 45" OLED 3440x1440 Ultra Wide + 2 x 27" 1440p
Case	darkFlash DK431
Power Supply	EVGA 850W Gold
Mouse	Logitech G502
Keyboard	Logitech G815
Software	Windows 10

System Name	TOO MUCH RADIATOR! \| The TV Box a.k.a. The Shoebox
Processor	Core i7 4930K @ 4.5GHz \| Core i5 6600K @ 4.5GHz
Motherboard	Asus X79 Rampage IV Extreme \| Asus Z170i Pro Gaming
Cooling	Custom water on CPU and GPU, dual 360mm radiators \| Corsair H80i
Memory	4x 8GB G.Skill TridentX DDR3-1600 \| 2x 4GB G.Skill RipJaws 4 DDR4-3000
Video Card(s)	Sapphire AMD R9 295x2 \| PowerColor AMD HD7970
Storage	Samsung SSD 830 256GB, various others \| 2x 1TB Seagate Barracudas in RAID1
Display(s)	Dell U2713HM 2560x1440 IPS \| Panasonic TC-L32E5 1080p IPS TV
Case	Thermaltake Suppressor F51 (stripped down to hold two radiators) \| Cooler Master Elite 130
Audio Device(s)	RM-DAC -> Xiang Sheng 708b -> Sennheiser HD650 \| HDMI sound device on 7970
Power Supply	LEPA G1600-MA 1600W \| Corsair CX750M 750W
Software	Win 10 64
Benchmark Scores	over 9000 BungholioMarks, "Bitchin' Fast"

System Name	Big Devil
Processor	Intel Core i5-2500K
Motherboard	ECS P67H2-A2
Cooling	XSPC Rasa \| Black Ice GT Stealth 240 \| XSPC X2O 750 \| 2x ACF12PWM \| PrimoChill White 7/16"
Memory	2x4GB Corsair Vengeance LP Arctic White 1600MHz CL9
Video Card(s)	EVGA GTX 780 ACX SC
Storage	Intel 520 Series 180GB + WD 1TB Blue
Display(s)	HP ZR30W 30" 2650x1600 IPS
Case	Corsair 600T SE
Audio Device(s)	Xonar Essence STX \| Sennheisser PC350 "Hero" Modded \| Corsair SP2500
Power Supply	ABS SL 1050W (Enermax Revolution Rebadge)
Software	Windows 8.1 x64 Pro w/ Media Center
Benchmark Scores	Ducky Year of the Snake w/ Cherry MX Browns & Year of the Tiger PBT Keycaps \| Razer Deathadder Black

System Name	All the cores
Processor	2990WX
Motherboard	Asrock X399M
Cooling	CPU-XSPC RayStorm Neo, 2x240mm+360mm, D5PWM+140mL, GPU-2x360mm, 2xbyski, D4+D5+100mL
Memory	4x16GB G.Skill 3600
Video Card(s)	(2) EVGA SC BLACK 1080Ti's
Storage	2x Samsung SM951 512GB, Samsung PM961 512GB
Display(s)	Dell UP2414Q 3840X2160@60hz
Case	Caselabs Mercury S5+pedestal
Audio Device(s)	Fischer HA-02->Fischer FA-002W High edition/FA-003/Jubilate/FA-011 depending on my mood
Power Supply	Seasonic Prime 1200w
Mouse	Thermaltake Theron, Steam controller
Keyboard	Keychron K8
Software	W10P

System Name	Big Devil
Processor	Intel Core i5-2500K
Motherboard	ECS P67H2-A2
Cooling	XSPC Rasa \| Black Ice GT Stealth 240 \| XSPC X2O 750 \| 2x ACF12PWM \| PrimoChill White 7/16"
Memory	2x4GB Corsair Vengeance LP Arctic White 1600MHz CL9
Video Card(s)	EVGA GTX 780 ACX SC
Storage	Intel 520 Series 180GB + WD 1TB Blue
Display(s)	HP ZR30W 30" 2650x1600 IPS
Case	Corsair 600T SE
Audio Device(s)	Xonar Essence STX \| Sennheisser PC350 "Hero" Modded \| Corsair SP2500
Power Supply	ABS SL 1050W (Enermax Revolution Rebadge)
Software	Windows 8.1 x64 Pro w/ Media Center
Benchmark Scores	Ducky Year of the Snake w/ Cherry MX Browns & Year of the Tiger PBT Keycaps \| Razer Deathadder Black

System Name	Haro
Processor	AMD 1700x
Motherboard	AsRork x370 Taichi
Cooling	EK Custom Loop - CPU only
Memory	32gb G-Skill Trident Z
Video Card(s)	EVGA 1080 Superclock 2
Storage	Too Many
Display(s)	Viewsonic VX2450WM-LED 24" & LG 32 IPS
Case	Cooler Master Cosmos II
Power Supply	Cooler Master V1000
Mouse	SteelSeries Rival 500
Software	Win10 Pro
Benchmark Scores	i5 750 4.62ghz pi runs // Evga FTW p55

Processor	Intel C2D E8500 @ 4.25GHz (1.36V)
Motherboard	Gigabyte GA-X38-DQ6
Cooling	(Temporary) Tuniq Tower 120
Memory	2GB Transcend aXeram 1200+
Video Card(s)	HIS HD3870 CF Volt modded
Storage	3 Seagate 320Gb Barracuda in an Intel Matrix Raid array
Display(s)	Sony GDM-FW900 24" Widescreen CRT (a.k.a "The Shiznotch")
Case	Ultra Aluminus Full Tower
Audio Device(s)	onboard Intel HD audio
Power Supply	PC Power & Cooling Silencer 750
Software	XP MCE + Vista (HP) dual-boot

System Name	PCGOD
Processor	AMD FX 8350@ 5.0GHz
Motherboard	Asus TUF 990FX Sabertooth R2 2901 Bios
Cooling	Scythe Ashura, 2×BitFenix 230mm Spectre Pro LED (Blue,Green), 2x BitFenix 140mm Spectre Pro LED
Memory	16 GB Gskill Ripjaws X 2133 (2400 OC, 10-10-12-20-20, 1T, 1.65V)
Video Card(s)	AMD Radeon 290 Sapphire Vapor-X
Storage	Samsung 840 Pro 256GB, WD Velociraptor 1TB
Display(s)	NEC Multisync LCD 1700V (Display Port Adapter)
Case	AeroCool Xpredator Evil Blue Edition
Audio Device(s)	Creative Labs Sound Blaster ZxR
Power Supply	Seasonic 1250 XM2 Series (XP3)
Mouse	Roccat Kone XTD
Keyboard	Roccat Ryos MK Pro
Software	Windows 7 Pro 64

How-to: Pencil mod your HD 3870!

The Anti-Midas

Attachments

where the hell are my stars

where the hell are my stars

The Anti-Midas

Battosai

where the hell are my stars

where the hell are my stars

New Member

The Anti-Midas

DavyGT

Guest

DavyGT

Guest

DavyGT

Guest

DavyGT

Guest

The Exiled Airman