How-to: Pencil mod your HD 3870!

Deleted member 24505 · Aug 11, 2008

It would be stock at 96 i reckon.

By the looks of his pics,he needs to clean all traces of the old volt mod off and start again.It really does look like he bridged something on the resistance connection.The earth is fine onto the pci-e connector.

Dr. Spankenstein · Aug 11, 2008

Any possible way of getting a better picture of the affected area (Man, I do sound like a Dr.!) :laugh:

Does your camera have a MACRO setting? Do you have access to a flatbed scanner?
It would be of great help to have a focused, high-resolution photo of the card.

KurosakiIchigo · Aug 11, 2008

Dr. Spankenstein said:
Any possible way of getting a better picture of the affected area (Man, I do sound like a Dr.!)

Does your camera have a MACRO setting? Do you have access to a flatbed scanner?
It would be of great help to have a focused, high-resolution photo of the card.

Here

i can't get more detailed photos...

Random Murderer · Aug 11, 2008

maybe we're all missing something and the hard mod doesn't really bypass r1222?
get a 2Kohm multiturn pot and put it in place of r1222.
something like this.

Deleted member 24505 · Aug 11, 2008

Do you reckon that could be an easier v mod by altering the resistance of r1222?

Deleted member 24505 · Aug 11, 2008

I uploaded KurosakiIchigo's pic from the rar,it does not look very healthy.

KurosakiIchigo · Aug 11, 2008

Random Murderer said:
maybe we're all missing something and the hard mod doesn't really bypass r1222?
get a 2Kohm multiturn pot and put it in place of r1222.
something like this.

ok , Stay Tuned for infos

Dr. Spankenstein · Aug 11, 2008

tigger69 said:
I uploaded KurosakiIchigo's pic from the rar,it does not look very healthy.

THAT is an understatement! :eek:

"Why won't it boot?" Are you serious!?! You should be arrested for molesting that poor card! :cry:

Random Murderer · Aug 11, 2008

Dr. Spankenstein said:
THAT is an understatement!

"Why won't it boot?" Are you serious!?! You should be arrested for molesting that poor card!

woah there, it's ok. his soldering skills may not be on par with yours, dr.
remember, i killed the first card i hard modded.

ichigo, remove the wire and clean up the soldering job a bit. solder wick will really help here.

KurosakiIchigo · Aug 11, 2008

Random Murderer said:
woah there, it's ok. his soldering skills may not be on par with yours, dr.
remember, i killed the first card i hard modded.

ichigo, remove the wire and clean up the soldering job a bit. solder wick will really help here.

this was the first time i sold in my life

i don't understand the last words

Dr. Spankenstein · Aug 11, 2008

@ Random,

Please forgive. That was meant to be more "tongue-in-cheek"...

Should have used the "winky" emoticon. At least I didn't go with "sodomizing" iron! :laugh:

@KurosakiIchigo
solder wick

The heat of your soldering iron on top of this will remove extra solder.

KurosakiIchigo · Aug 11, 2008

Dr. Spankenstein said:
@KurosakiIchigo
solder wick

The heat of your soldering iron on top of this will remove extra solder.

Thx

sleepsus · Aug 12, 2008

Random Murderer said:
although i can't say this for sure, palit has never made a reference 3870. if they have, i've haven't seen it.
in the case that it is not a reference pcb, you'll need to do a bit of detective work(we'll help you) to find out where the measure point is. there is only so much we can figure out without actually having the card in our hands.

I can't seem to find an R1222 marked resistor on the PCB, I do see an SR122 one?

Full backside:

Deleted member 24505 · Aug 12, 2008

Can you post as good a close up as you can get of this area please.

Random Murderer · Aug 12, 2008

tigger69 said:
Can you post as good a close up as you can get of this area please.

my thoughts exactly.

sleepsus · Aug 12, 2008

tigger69 said:
Can you post as good a close up as you can get of this area please.

Here ya go:

Random Murderer · Aug 30, 2008

sorry for the long delay, i know it's been over two weeks.

is there any way you could get a nice, high res shot of the other side sans the cooler?

crapgame · Sep 14, 2008

thank 2 all for the mod tips. :respect:

will do pencil mod soon but want 2 get water cooling 2 my vid card.
what make of waterblock r u guys that r on water using?
thanks :toast:

tom

Random Murderer · Sep 14, 2008

crapgame said:
thank 2 all for the mod tips.
will do pencil mod soon but want 2 get water cooling 2 my vid card.
what make of waterblock r u guys that r on water using?
thanks
tom

swiftech is good, as well as dangerden and d-tek. if i'm missing one, i'm sure one of the others will pick it up quickly.

Thrackan · Oct 10, 2008

Has anyone tried gophering around with the non-reference Asus 3870?
I have the version with the gold-colored heatsink and I want to find out whether I can pencilmod this baby :cool:

Random Murderer · Oct 10, 2008

yes, unfortunately asus uses proprietary chips that we have not been able to figure out yet.

k_9virus · Oct 17, 2008

thanks for the tips guys

ivanka_13 · Oct 22, 2008

Hi! any updates on the Palit HD38xx PCB? i have the same gfx card but i can't find the R1222.

Random Murderer · Oct 22, 2008

ivanka_13 said:
Hi! any updates on the Palit HD38xx PCB? i have the same gfx card but i can't find the R1222.

if you can post some high res shots of the back of the card and the front without the cooler, i can have a look.

Thrackan · Oct 24, 2008

Random Murderer said:
yes, unfortunately asus uses proprietary chips that we have not been able to figure out yet.

Do you think you could figure stuff out if I make hi-res pictures of the PCB?
I equipped my 3870 with a Zalman VF1000 yesterday, which dramatically dropped load temps by 12C with the fan on low :cool:

and that's without taking thermal grease cure time into account...

Unfortunately, this didn't seem to improve my card's overclock capabilities. Volt modding must be the answer

Current results (yes, I have a small case, which affects GPU cooling capabilities):
Stock clock: 777/1126 @ 56C load
Stable max: 864/1168 @ 61C load

Previous results (stock cooler):
Stock clock: 777/1126 @ 68C load
Stable max: 864/1126 @ 74C load

I have a gut feeling this can be improved :shadedshu

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

Processor	Intel Q6600 @ 3.00 Ghz 1,232 Vcore
Motherboard	Asus P5k CF Edition Vdrop modded
Memory	2 x 2 Gb Corsair 800 Mhz 4-4-4-12 1.9V
Video Card(s)	Sapphire GDDR4 3870@ 958 Vgpu - 2650 Vram
Storage	320gb 32mb cache

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"

Processor	Intel Q6600 @ 3.00 Ghz 1,232 Vcore
Motherboard	Asus P5k CF Edition Vdrop modded
Memory	2 x 2 Gb Corsair 800 Mhz 4-4-4-12 1.9V
Video Card(s)	Sapphire GDDR4 3870@ 958 Vgpu - 2650 Vram
Storage	320gb 32mb cache

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	PEANUT
Processor	AMD Athlon 7750 BE @3.1Hz
Motherboard	EMMAX EMX-AMD790GX-XTRM
Cooling	Thermalright, Antec, Silverstone, Nidec
Memory	Xtreem Dark 1066C6 1GB X2
Video Card(s)	HIS HD 4850 IceQ 4 Turbo @700/1200
Storage	Seagate Barracuda, WD Caviar Blue
Display(s)	Samsung Sync Master SW2233
Case	Antec Three-Hundred
Audio Device(s)	Realtek HD ALC888
Power Supply	HEC Raptor R500
Software	Windows 7 Ultimate 32bit

System Name	LuCy
Processor	Q9450 @ 3,41GHZ stable
Motherboard	Maximus II Formula
Cooling	Thermaltake Kandalf LCS
Memory	4 GIG. OCZ DDR2 PC2-9600 Reaper HPC Edition
Video Card(s)	ATI Radeon™ HD 4850
Storage	Western Digital Raptor WD360ADFD 36GB 10000 RPM 16MB
Display(s)	LG L204WS-SF
Case	Thermaltake Kandalf LCS
Audio Device(s)	Logitech Z680 speakers on X-FI
Power Supply	Antec NeoPower 650
Software	XPpro
Benchmark Scores	8x425fsb = 3400mhz 3dmark06=14139 fer now workin on it

System Name	Acer Aspire V3-771G-53218G75Maii
Processor	Core i5 3210M (2,5-3,1Ghz)
Memory	8GB DDR3 SODIMM
Video Card(s)	Geforce GT650M
Storage	Samsung 830 256GB - 750GB Toshiba drive
Software	Windows 7 x64 Home Premium (non-acer-bloatware)

System Name	Whitedevil
Processor	AMD 7800X3D
Motherboard	Asrock X670E Steel Legend
Cooling	Custom H2O cooling
Memory	Gskill Flare5 6000mhz
Video Card(s)	Sapphire Pulse 9070XT
Storage	Samsung 980pro, WD black nvme 500gb, Samsung 860 evo 500gb, WD3tb
Display(s)	Gigabyte g34wqc a / acer xf270h
Case	Silverstone TJ11 / FT02 4eva
Power Supply	EVGA supernova 1000g+
Mouse	Logitech g703
Keyboard	Logitech pro
Software	Windows 11 x64

System Name	Gaming?
Processor	Intel E2160 @ 3.4GHz Processor
Motherboard	DFI LanParty ICFX3200-T2R/G Motherboard
Cooling	Xigmatek HDT-SD964 CPU Cooler
Memory	Geil 4GB (2*2GB) DDR2-800 Memory Modules
Video Card(s)	Palit HD3870 512MB/256bit DDR3 Video Card @ 800/1125
Storage	Western Digital 160GB SATA2 Hard Disk Drive
Display(s)	Asus VW193D LCD
Case	Achilles ATX Casing
Audio Device(s)	Realtek ALC885 Integrated HD Audio
Power Supply	Silverstone ST75ZF 750W Power Supply
Software	Windows XP PRO SP3

How-to: Pencil mod your HD 3870!

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