odd 3xxxx series voltages.. ??

trog100 · Mar 11, 2008

just had alook at some with the RBE bios editor..

the fastest 3870 card that can be bought.. the HIS turbo thing.. comes clocked at 850 core.. way higher than reference..

ati reference type 3870 card.. comes clocked at 777 core..

my odd gigabyte 3870 with gddr3 memory.. 777 core

as listed gpu voltage

HIS 850 core.. 1.3... lower than average..

ati refence 777 core 1.327.. average

odd gigabyte 3870/3850 mongrel.. 777 core 1.241

the average 3850 core voltage.. 1.241..

none of this makes a great deal of sense to me.. he he he

trog

Dr. Spankenstein · Mar 11, 2008

makes perfect sense...HIS makes superior hardware!!! he he he

DanishDevil · Mar 11, 2008

Haha my HIS non-turbo runs default at 1.3 versus the normal 1.35, and at 1.36 with the pencil mod, it will do 877.5 core. Nothing more though, even up to 1.52V. Just crashes.

I think maybe the HIS cards don't like (or need) a lot of voltage.

kup · Mar 11, 2008

Hey Trog, I've been lurking here reading up on the 3800 series bios and I thought I'd post a few of my findings.

For me, both the HIS cards and the GeCube O.C. Edition 3870 have hard coded voltages. Regardless of what you set in the bios the card suppies a different voltage set by the resistor/chip layout on the PCB. My GeCube doesn't even have a 2D power circuit because by design it's not supposed to enter 2D mode, but by force flashing a different bios it can, albeit without dropping the voltage, just the clocks.

The HIS bios operates in the same manner from what I can tell, only 3D clocks and bios set voltage has no effect at all.

What do you think?

Kup @ Redline...

DanishDevil · Mar 11, 2008

I've had a different experience. My HIS IceQ3 non-turbo has the 2D and 3D clocks and voltages. My chip just doesn't like anything over 1.36ish V. Tested with a multimeter.

kup · Mar 11, 2008

I also found something funky with the HIS ICEQ Turbo bios...can't vMod to 1.5v with it or I get black screen and 0v vGPU when I initiate 3D. However, on the GeCube bios or any others (I also tried the Sapphire .77) it works fine up to the max I've tried, being 1.52v...?

DanishDevil · Mar 11, 2008

vMod as in through the BIOS or with a pencil/hardmod? I've done the pencil mod so far, even though my HIS supports software voltage control.

And :toast:

Welcome to the forums as a member! I like ur sig btw.

Dr. Spankenstein · Mar 11, 2008

DanishDevil,

I am still of the belief that yours is more a heat issue. Don't ask to explain, cuz I don't know. I'm thinking if you got some aftermarket cooling you'd be straight.

@ kup,

My reference HIS cards have no problem with extreme voltages. Mine is hard moded. I've had it up to 1.56 without issue.

DanishDevil · Mar 11, 2008

Yeah, it could be. Maybe the chips that HIS uses on their cards (including mine) don't like to go over 80C or something and that's why I black out after a period of time in 3D mode. Wanna buy me a watercooling kit so I can test your theory Spankenstein? :roll:

trog100 · Mar 11, 2008

kup said:
Hey Trog, I've been lurking here reading up on the 3800 series bios and I thought I'd post a few of my findings.

For me, both the HIS cards and the GeCube O.C. Edition 3870 have hard coded voltages. Regardless of what you set in the bios the card suppies a different voltage set by the resistor/chip layout on the PCB. My GeCube doesn't even have a 2D power circuit because by design it's not supposed to enter 2D mode, but by force flashing a different bios it can, albeit without dropping the voltage, just the clocks.

The HIS bios operates in the same manner from what I can tell, only 3D clocks and bios set voltage has no effect at all.

What do you think?

Kup @ Redline
...

i think u may be right at least with the power colour card.. one speed all the time i think.. as for the others.. they either have super chips that run at lower voltages or they are hard wired.. dunno.. its what i am trying to find out..

my mongrel gigabyte is an interesting one.. its 2 d voltages are very low only 1.134.. and its 3870 core speed seems to be achieved with 3850 voltages..

again either hard wired or a super chip.. dunno..

trog

ps.. i know the reference card has overvolt protection.. i had mine not booting several times when i was at it with the pencil..

Dr. Spankenstein · Mar 11, 2008

Do I want to? Sure I do...

Can I afford to?

No way, Jose!

But I do kinda agree that these chips seem to fart-out under rather modest temps compared to earlier/larger process chips.

kup · Mar 11, 2008

DanishDevil said:
vMod as in through the BIOS or with a pencil/hardmod? I've done the pencil mod so far, even though my HIS supports software voltage control.

And Welcome to the forums as a member! I like ur sig btw.

I mean editing the voltages in the bios does nothing for my actual voltages, only a pencil or hard mod changes them.

And thank you for the welcome and the compliment! :toast:

Dr. Spankenstein said:
@ kup,

My reference HIS cards have no problem with extreme voltages. Mine is hard moded. I've had it up to 1.56 without issue.

Interesting, I've read of other HIS cards that stuggle with about 1.45v+, there is the OCP mod to allow pretty much unlimited voltage but that shouldn't really be needed until about 1.8v on Phase...

Dr. Spankenstein · Mar 11, 2008

kup said:
Interesting, I've read of other HIS cards that stuggle with about 1.45v+, there is the OCP mod to allow pretty much unlimited voltage but that shouldn't really be needed until about 1.8v on Phase...

True. I don't think I'll be attempting that kind of voltage with my stock cooler. :eek:

DanishDevil · Mar 11, 2008

Spankenstein, is your HIS the non-IceQ3 version? I know they do make a reference one, I just can't find it. Prolly disct'ed it.

Dr. Spankenstein · Mar 11, 2008

Yup! I got them before Christmas last year. They may not be making them anymore.

Buying things when they first come out is funny: they MAY have over-engineered them to help build their reputation OR the may have rushed some crap out the door to make a quick buck.

You just never know!

trog100 · Mar 11, 2008

one of mine is an HIS they had them out first.. pure plain red with no sticker on it.. they never had time.. he he.. pure reference design as well..

it dosnt bug out at over 90 C either.. but a few degrees cooler did enable another very small 5 or so mhz to be sqeezed out of it.. i had two both behaved in the same way i couldnt tell em apart..

the later HIS are not entirely reference design..

trog

DanishDevil · Mar 11, 2008

That's what I figured. I've noticed some subtle differences in them. Maybe I should take the shroud off the cooler and put a 92mm ACRyan fan blowing through the heatsink to see if I can get the temps down and see if it likes a little more voltage. I'm gonna start a project log on my 3870 and work on it this weekend - maybe you guys could help me out and give me ideas?

Dr. Spankenstein · Mar 11, 2008

No matter how many different angles I tried to point my 120mm 86cfm fan or 120mm 38cfm fan at my top card, my temps got worse because the turbulence created in the 1/8th inch space between then choked the flow of air getting into the cooler.
My bottom card is quite happy and idles at 29C with my bottom mounted triple rad blowing on it.

DanishDevil · Mar 11, 2008

I'm going to remove the card's fan and shroud so it's simply the ram, vreg, and gpu heatsinks, and set a fan blowing towards the back of my case with its center lined up with the card's PCB. That way, the single fan will hopefully force air through the heatsink and across the entire card.

System Name	money pit..
Processor	Intel 9900K 4.8 at 1.152 core voltage minus 0.120 offset
Motherboard	Asus rog Strix Z370-F Gaming
Cooling	Dark Rock TF air cooler.. Stock vga air coolers with case side fans to help cooling..
Memory	32 gb corsair vengeance 3200
Video Card(s)	Palit Gaming Pro OC 2080TI
Storage	150 nvme boot drive partition.. 1T Sandisk sata.. 1T Transend sata.. 1T 970 evo nvme m 2..
Display(s)	27" Asus PG279Q ROG Swift 165Hrz Nvidia G-Sync, IPS.. 2560x1440..
Case	Gigabyte mid-tower.. cheap and nothing special..
Audio Device(s)	onboard sounds with stereo amp..
Power Supply	EVGA 850 watt..
Mouse	Logitech G700s
Keyboard	Logitech K270
Software	Win 10 pro..
Benchmark Scores	Firestike 29500.. timepsy 14000..

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	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	Maximus Rampage
Processor	Q6600 @ 3.72GHz (4.2GHz Max)
Motherboard	Asus Maximus Formula Rev 1.02g @ Rampage Bios 0219
Cooling	Thermalright Ultra 120 Extreme w/ 2x120mm 75CFM Sharkoon Silent Eagles @ Push/Pull
Memory	2x1GB Corsair XMS2 6400C4 DHX @ 4-4-4-12
Video Card(s)	GeCube ATi HD 3870 X-Turbo O.C. Edition @ HIS r2 Turbo Bios
Storage	2x36GB Raptors, 150GB Raptor, 2x500GB Seagate Barracuda SATAII, 2x250GB Maxtor SATAII
Display(s)	Yuraku 24" VA Panel (180/180 Viewing Angle) 1920x1200
Case	Antec 900 Gaming Case / Caseless
Audio Device(s)	X-Fi Xtreme Gamer Fatal1ty Edition
Power Supply	850w Thermaltake ToughPower Modular
Software	Windows XP Pro x86 / OSx86 10.5.2 Vanilla Kernel / Vista x64 Stripped, Gutted and Tweaked

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

odd 3xxxx series voltages.. ??

trog100

Dr. Spankenstein

DanishDevil

kup

New Member

DanishDevil

kup

New Member

DanishDevil

Dr. Spankenstein

DanishDevil

trog100

Dr. Spankenstein

kup

New Member

Dr. Spankenstein

DanishDevil

Dr. Spankenstein

trog100

DanishDevil

Dr. Spankenstein

DanishDevil