XFX 4830 vmod? [Archive] - XtremeSystems Forums

Ket

04-24-2009, 06:29 PM

celemine1Gig

04-25-2009, 02:12 AM

That IC is uP6101BU8 VG(I think)8B6. Last 3 are real tough to read. Default GPU voltage is 1.25v according to the vBIOS, and memory is Samsung -HJ1A, so a vmem mod to 2.1v should see them doing 1100 easy. Bit puzzled about the GPU clocking so low with 1.25v. BIOS modded voltage to 1.17v and the GPU clocked exactly the same.. so I'd guess the GPU is actually getting 1.17v and not 1.25v.

ED - If someone can verify where I think GPU and vmem read points are i'll get some exact numbers with my multimeter.

Here's a pic concerning the measure-points:

http://www.hs-augsburg.de/~ingmar_k/STA604292.jpg

For the vmods:

up6101:
Pin#3 is GND and pin#6 is FB. So measure resistance between both of them. (and make sure that this is really responsible for VMEM)

up6201:
pin#4 is GND and pin#13 is FB. Measure resistance.
Droop mod could possibly be done, but in the datasheet it says only for up6201A, so this might rule it out.

Ket

04-25-2009, 03:24 AM

Ok, mesuring those points the numbers I got are 1.74v for what must be the memory - its undervolted. Samsung state -HJ1A for 1.9-2v operation. So we will aim for the full 2v to see what this memory can really do. Heat shouldn't be a issue, I got Tweakmonster RAMsinks on with Shinetsu. As for vGPU, its not at those points theres no reading at all from there.

ED - for anyone that wants it heres a full frontal of the card (for any persons under 18 years of age please leave the thread :p )

http://img.photobucket.com/albums/v187/bizket/STA60438.jpg

celemine1Gig

04-25-2009, 05:20 AM

...As for vGPU, its not at those points theres no reading at all from there.
...

Then try the polymer caps' (the silver and blue ones on the frontside) legs , just right next to the points that I had marked. That should do the trick. But be very careful not to short them out! I know from experience that it is quite easy to slip when touching these THT parts' legs with the DMM probe.

Ket

04-25-2009, 06:16 AM

Ok I'll do that when I'm next inside the case. Until then lets work on vmem. I'm good with a soldering iron and general electrical stuff but haven't vmodded a graphics card since the 9600Pro days. Whats going to be the best way to up vmem to around 2v? Ideally I don't want to use any adjustable pots for some reason I just don't like them. Something I can solder on to lower resistance is good enough.

celemine1Gig

04-25-2009, 07:15 AM

We'll need the current resistance between the named pins first. Then I'll tell you what resistor to use to get approximately the right outcome of about 2V. ;)

Ket

04-25-2009, 08:22 AM

What pins were they? Unless I've missed something the only pins talked about were to do with vGPU :yawn:

celemine1Gig

04-25-2009, 09:20 AM

...

For the vmods:

up6101: <--VMEM
Pin#3 is GND and pin#6 is FB. So measure resistance between both of them. (and make sure that this is really responsible for VMEM)

up6201: <--VGPU
pin#4 is GND and pin#13 is FB. Measure resistance.
Droop mod could possibly be done, but in the datasheet it says only for up6201A, so this might rule it out.

See the little edit above. ;)

Ket

04-25-2009, 02:17 PM

Ahh ok, just to make sure pins 3 & 6 are the ones I'm looking at, want to mark them on the pic for me? :D I really don't want to kill this card before the vmem mod... its sexy :p:

celemine1Gig

04-25-2009, 02:48 PM

http://www.hs-augsburg.de/~ingmar_k/STA604292mem.jpg

BTW, the dot on the package marks pin#1. ;)

Ket

04-25-2009, 04:31 PM

Alright the multimeter says 0.79 resistance. THanks for marking the legs, I was actually looking at it wrong and was looking at the other 2 middle legs :p

SpikeP

04-25-2009, 04:47 PM

Heya guys. i got one of these cards as well. haven't had time to sit down and get some real numbers from it. Also working tomorrow, but if anyone wants some pics taken, i got my lower end Olympus E-410 ready to go :D

Also got a multimeter at the ready if anyone wants some points read. If anyone does, give me a heads up on here, and i will see if i can get it all up from tomorrow. Look forward to hearing some results! May get involved myself. we shall see ;)

- Paul

celemine1Gig

04-26-2009, 02:44 AM

Alright the multimeter says 0.79 resistance. THanks for marking the legs, I was actually looking at it wrong and was looking at the other 2 middle legs :p

The calculation was based on wrong values. :( Had to delete it.

@SpikeP:
Double checking the resistances on your card wouldn't hurt, in order to be sure. So, feel free to measure the marked spots. I would highly appreciate it, as I always like to be sure of what I'm doing. And as I don't have the card myself, I'm fully reliant on your measurements here. ;)

celemine1Gig

04-26-2009, 04:02 AM

I measured @ 20 DCV as I tend to do everything in DCV, switching to 20 Ohms gave a reading of 7.4, or 740, whichever way you want to look at it.

Sorry, but that doesn't make any sense. Ignore my previous post then. I'll delete it, as the values clearly were not correct.

With the "20 DCV" setting you are measuring Volts, so I guess the 0.79 reading was Volts?

With the 20 Ohms setting you measure in the range from 0-20 Ohms. So, there is no "740" reading there.

Like this, working out a mod doesn't make any sense at all. Next time please include exactly how you measured. Which DMM setting and all.

Ket

04-26-2009, 04:11 AM

What Ohms do you want me to measure at? Need a pic of my multimeter? I know what I'm saying, but others may not. Which is where visual aids are so handy :D

Scrizz

04-26-2009, 04:34 AM

ooo I would like to know the result aswell

Oc-Ghost

04-26-2009, 05:21 AM

Like I said, measuring @ 20 Ohms the reading is 7.4, or 740 depending if you needed the decimal. I do everything in DCV not Ohms so wasn't sure if you counted the decimal or not.

Let´s make this easy :D

20 Ohms setting on the DMM means, the range it can measure is up to 20 Ohm.
200 Ohms setting......... up to 200 Ohms.

Now then.. if you measured with 20 Ohm range and you got 7.4 it´s 7 POINT 4.... nothing else..
If and if it would have been 740, the meter would have shown some character or sign on the display.
Meaning its a bigger value than you have your range on.

Thank you and good luck

celemine1Gig

04-26-2009, 06:02 AM

No offence, but I'd like to have a second opinion, or to put it correctly a second and/or third measurement on that. Before getting the values affirmed, I won't give you another resistance value for the vmod. I wouldn't like to have some poeple kill their cards due to bogus readings. Hope you understand. ;)

Your current readings are just way too different. First you say 7.4 (Ohms, as it was @20 Ohms range setting) or 740 Ohms (just not possibly at 20 Ohms range setting) and now it should be 580k (at 2000K range setting)? That seems odd and absolutely not believable. Either your meter is damaged or you are doing something wrong.

ceemic

04-26-2009, 09:07 AM

What about 20k and 200k range?

SpikeP

04-26-2009, 09:21 AM

I am going get out of my work stuff, and then get this card out and read some points. will take some pics whilst im at it. help as much as i can. be back with my multimeter readouts amongst the pics too ;)

- Paul

celemine1Gig

04-26-2009, 09:28 AM

...
So in a nutshell the reading is 7.4 @ 20 Ohms and 580 @ 2000k Ohms.
...
Although I may sound like a broken record here, I have to say that this is quite impossible. There can only be one true reading.
The only thing that could possibly cause a resistance change would be a change in frequency. But only adjusting the range, there should be absolutely no frequency change involved. So 7.4 Ohms in 20 Ohms-range is 0.0074 Ohms in 20k range and so on. And a reading of 580 does clearly and only indicate 580 kilo Ohms, when the range is set to 2000k.

Believe me, when you get those readings, then there is something wrong. I don't know what it is, but I would like to see the results from other poeple who could measure the resistances on their cards. :up:

Working on a vmod with the readings above is like russian roulette. :rolleyes:

Ket

04-26-2009, 09:41 AM

I'll just start everything again using all Ohms settings. I'm starting to confuse myself trying to clear up what celemine1Gig is getting confused about. Will edit with results in a few.

SpikeP

04-26-2009, 10:04 AM

pins 3 and 6 on 20k ohms. im getting 3.94, so 3.94k ohm's is from my card.

uP6101 chip full name = uP6101BU8 VGB8B6
uP6201 chip full name = uP6102BQ VLP89K

Pins 6 and 13, im getting nothing from. In fact im getting no reading from pin 13 and any of the others. will post pics of the chips after my dinner. resize them for forum, and give links to full size ones. card is out of my comp right now. anyone want any others areas checked, now would be a could time :)

EDIT1: Voltage reading of one set of pins is 2.01v idle, so guessing that is memory. the possible vgpu point measures 1.20v, so guess that is right as well. This is at idle, so gona load it now and see what the droop is like.

EDIT2: Memory stays at 2.01v under load. vgpu goes up to 1.22v. Used furmark and 3dmark 03 for testing during measuring.

- paul

Ket

04-26-2009, 10:44 AM

Good job you could get the readings! I slipped with one of my probes, now the card is dead :(

ceemic

04-26-2009, 10:45 AM

I slipped with one of my probes, now the card is dead :(
Deem :( Sorry to hear that...

EDIT: please appologise my n00b question, but did You measure the resistances, when card was disconnected from PC?

SpikeP

04-26-2009, 10:50 AM

damn dude. was it the vGPU controller you slipped on? Those pins and really small and flimsy. duno if my soldering is good enough for them, lol. You gona try and repair it, send it back etc?

i got the card back in, but im still good to test as many area as possible. just gona transfer the card pics, and get them hosted now.

Hope things work out Ket. i know im not on here much, but i do think all the work done on here is awesome! nowhere else is better, and thats why i wana contribute.

- Paul

Ket

04-26-2009, 10:53 AM

Yep all was off, it was only a very slight slip, but obviously it was enough to kill it :( I'm going to RMA it as theres no damage what so ever to the card, its practically brand new.

ceemic

04-26-2009, 11:15 AM

SpikeP, You don't need to solder directly to IC leg. It's very hard and dangerous. Trace where the needed pin heads and find a better spot.

Ket, I haven't ever heard that someone has killed a unplugged card. Maybe static electricity killed it? Or did You used "continuity" mode with DMM?

SpikeP

04-26-2009, 11:18 AM

Okay. well got the pics for ya now. Hope this helps you all get a bit further in cracking this card. Im sure it is really a beast :D

Full view of back of card (and my vinyled case XD):

http://img185.imageshack.us/img185/2074/p4260116.jpg

Macro of uP6101 and surrounding:

http://img185.imageshack.us/img185/1479/p4260129.jpg

Macro of uP6201 and surrounding:

http://img527.imageshack.us/img527/4824/p4260130.jpg

View of back section of the card, and my results:

http://img511.imageshack.us/img511/496/p4260131.jpg

http://img185.imageshack.us/img185/496/p4260131.jpg

- Paul

EDIT: examining my own pics, look like i read the wrong pins. the first pin under the white dot is pin 1. and goes around anticlockwise? If anyone can give me a heads up on that, and i will check it later on.

ceemic

04-26-2009, 11:39 AM

The white dot marks pin1.
Pin 13 is there:
http://ceemic.pri.ee/hardware/xfx_hd4830_1.JPG
I am not sure if the trace is correct, the pic is not that good. You can confirm it with DMM.
And don't use GND on that IC. It's too small and therefore bigger possibility to have incorrect readings. You can use for example PCIe connector GND or some bigger SMD component (near that IC) that has GND in one side.
Sorry for the big pic.

celemine1Gig

04-26-2009, 12:38 PM

Dito to all that ceemic said so far.

@Ket: Sorry to hear that your card's dead.

Now back on topic:

For Vmem, a 100k should be fine. Just connect it between pin#3 and pin#6 of the up6101. Make sure it's et to max resistance before soldering it in.
You could also use a 50k poti if you don't mind a higher default voltage with the potentiometer at its max., but want more precision in higher voltage ranges. If you want both, precision and nearly same default voltage as an unmodded card, you can use 2 50k potis connected in series.

For VGPU: Ceemic already said it. Find alternative soldering points. It's not hard. Just use the meters continuity mode to find the right soldering pads etc.. If you don't want to use continuity mode, or your meter doesn't have that, just check resistance. Anything reading lower than 1 Ohm, is directly connected.

BTW: Continuity mode wouldn't kill a video card. The currents used for the continuity test are far too low. In fact it's just a resistance check that causes a beep when the resistance is low enough.

ceemic

04-26-2009, 12:45 PM

BTW: Continuity mode wouldn't kill a video card. The currents used for the continuity test are far too low. In fact it's just a resistance check that causes a beep when the resistance is low enough.
Tnx for clearing that up! I remember once one dude said that it uses the DMM's battery power and runs straight through DMM's probes :D

celemine1Gig

04-26-2009, 12:51 PM

Just to make you feel better: I use continuity check all the time to find directly connected, alternative soldering points. I may have killed a good amount of hardware already over the years, but none of these hardware deaths were caused by the continuity check. I can assure you on that one. ;)

ceemic

04-26-2009, 12:52 PM

celemine1Gig, I trust You on this. Thanks m8 :up:

Ket

04-26-2009, 06:11 PM

Static or probe got my card for sure.. I'll fire it up tomorrow again just to see if the damage was only temporary, but it didn't look like it when I booted up with the card.

celemine1Gig

04-27-2009, 12:42 AM

Judging from the readings you got that were all over the place, I'd venture a guess that maybe your DMM went belly up and killed the card. I would be very cautious with that thing.

SpikeP

04-27-2009, 12:37 PM

Okay. resistance between pins 6 and 13 = 3.24 K ohms

also checked using the GND's for the pci-e connector section. the outer 2 ground pins get a resistance between themselves, and pin 13, of 2.56 K ohms. However the middle gnd pin measures differently, depending on what probe you touch to which area, so kinda discarding that.

So PCI-E GND 1 & 3 = 2.56 K Ohm

for anyone who wants to know:

PCI-E GND 2 = 5.80 k Ohm (red probe on pin 13.)
PCI-E GND 2 = 6.43 K Ohm (black probe on pin 13 [COM])

Hope this helps you guys.

Edit - Followed pin 13 to the first resisto. read 2.56 K Ohm as well. have used a normal HB pencil, to drop that down to 2.22 K Ohm, and got initial reading of 1.34v, compared to the 1.20v off before. Going to go test it under load, and get back to you all.

Edit 2 - Changed the resistance up to 2.42 K Ohm. Finding the card is getting too hot. Goind down to 2.1K Ohm, gave me 1.45v Load, 1.41V Idle. 2.42K Ohm is giving me 1.28v Idle , and 1.30v load.
- Paul

celemine1Gig

04-27-2009, 01:33 PM

I guess you didn't really make contact to pin#4(AGND) on the up6201, but either the pin to its left or right. Or did you really mix it up and measured pin#6?

AGND: Signal Ground for the IC. All voltages levels are measured with respect to this pin. Tie this
pin to the ground island/plane through the lowest impedance connection available.

PowerGround(PGND): Tie this pin to the ground island/plane through the lowest impedance connection
available.

So you should measure in respect to AGND, which is pin#4, as I said from the beginning.

And honestly, a pencil is no way to finetune a voltage or the resistance that controls it.

SpikeP

04-27-2009, 01:46 PM

I know the pencil is, however i was curious and also working on cooling the power area as it is. Plus i figure some people may want to know if a pencil mod is do-able.

Resistance between pin 13 and pin 4 is 2.56k Ohm. Also gets effected by the same resistor. don't know if that helps you ain anyway. im highly interested in this area, and would like to know how you figure out what resistance variable resistor you need to use.

- Paul

I do appreciate all of yours help, as i do believe many others do out there!

celemine1Gig

04-27-2009, 02:47 PM

OK, so the value we're looking at is 2.56k unmodded.

That means the best would probably be to use 2 100k potentiometers connected in series (i.e. 200k resistance but with much better precision), connected between pin#13 and pin#4 or any directly connected solder points/pads.

The rule to work out the resistance is the simple resistance in parallel rule.

You want to get a resulting resistance, when using the formula, that means not too much change in comparison to the original unmodded resistance(assuming the parallel resistance is set to its max!).

That means in detail:

R1=unmodded resistance = 2.56k
R2=parallel modding resistance(s)/potentiometer(s)= X (what you are looking for)
The rule of parallel resistances says that the resulting resistance will always be lower than the lowest of the two original resistances (the ones you connected in parallel; R1 unmodded on the card and your parallel conected R2). --> if you don't want the final resistance to be much different from R1, R2 has to be much bigger than R1. BUT, don't choose R2 too big, as potentiometers are usually very non-linear in the lower resistance range(i.e. sudden resistance decrease and following voltage bump in the last 10-20% of the turns, if you are not careful and chose R2 too big).

--> using the formula (R1 * R2) / (R1 + R2) = Rmodded with R2 = 200k --> Rmodded is ~2.53k which should be OK, as it's only 1.2% lower than the unmodded resistance. 100k would be a bit too low for my liking, but it depends on the voltage you are looking for effectively. If you always want to use voltages higher than default then a bit of overvolting, even with the poti(s) at max won't hurt anyway.

You said that 2.56k (unmodded) means 1.2V and 2.1k gave you 1.45V.
2.1k / 2.56k = 0.82 --> voltage increase should be about 21% (1/x)
1.45V / 1.2V = ~1.21 --> looks about right, doesn't it. :)

With the formula you could also compute the needed value for a fixed resistor needed for a certain voltage.

All simple EE basics. :)

Oh and BTW, the card looks like it could need some capacitor mods. Looks like XFX intentionally left some solder pads unused, to save money and maybe even to cripple the card clocking performance. Could be worth it to try some additional high frequency ceramic and some polymer caps in the right locations.

Ket

04-29-2009, 02:07 AM

I wondered about the empty solder pads. If spike can get the details I'll consider putting the extra caps on my replacement card :D My ideal 4830 would be 800/2.2.

Scrizz

05-01-2009, 10:18 PM

oooo time to pull out both of my 4850s

Ket

05-02-2009, 10:29 AM

Still waiting on my replacement 4830. Damn bank holiday, cos of it I won't get my replacement card much before Friday :mad:

Scrizz

05-02-2009, 02:54 PM

tht sux
well at least you're running crossfire soon

Ket

05-03-2009, 01:50 PM

Yeah. Can't wait to show that ugly mofo people call 3DMark Vantage whos in charge. Vantage is by far the most butt-ugly benchmark I've ever seen. 3DMark06 looks way better.

Ket

05-04-2009, 04:00 PM

I will have 2 XFX 4830s arriving soon. So here is my question, where we see the missing capacitors on the XFX cards, do we know what possible benefit there might be by soldering the missing caps on? My soldering skills are my ace, so I'm willing to use one of the cards as a test subject :D

Scrizz

05-06-2009, 08:11 AM

so you get the cards yet?

Ket

05-06-2009, 01:58 PM

Indeed I have. Maybe I missed it but I don't think anyone said what pots would be best to use for a vmem mod. Thats what I'm mainly aiming for, these cards are screaming for more bandwidth.

JamesBong420

05-07-2009, 12:34 PM

[B]For Vmem, a 100k should be fine. Just connect it between pin#3 and pin#6 of the up6101. Make sure it's et to max resistance before soldering it in.
You could also use a 50k poti if you don't mind a higher default voltage with the potentiometer at its max., but want more precision in higher voltage ranges. If you want both, precision and nearly same default voltage as an unmodded card, you can use 2 50k potis connected in series.

celemine1Gig said it right.. still double check your resistance(s)... :up::p:

Ket

05-12-2009, 09:45 AM

Cool, I'll get on that. I don't mind a higher default voltage with a 50k, I just want to give the poor memory some decent voltage. Their rated for 2v and XFX volt them @ 1.74v :down:

celemine1Gig

05-13-2009, 01:05 AM

Cool, I'll get on that. I don't mind a higher default voltage with a 50k, I just want to give the poor memory some decent voltage. Their rated for 2v and XFX volt them @ 1.74v :down:

...
EDIT1: Voltage reading of one set of pins is 2.01v idle, so guessing that is memory. the possible vgpu point measures 1.20v, so guess that is right as well. This is at idle, so gona load it now and see what the droop is like.

EDIT2: Memory stays at 2.01v under load. vgpu goes up to 1.22v. Used furmark and 3dmark 03 for testing during measuring.

- paul

I guess you should rethink the highlighted part before attempting another mod. It's highly unlikely that XFX used a special circuit just for your card. --> The real memory voltage on your card never was 1.74V. If it would've been I think that the RAM wouldn't even have worked correctly. Remember that would be a 15% decrease. As I already said, the likelyness of one card having such a huge difference in voltage in comparison to the rest, is very small. They are produced in mass manufacturing and each card is tested individually.

Be sure to recheck those values, using the right measuring spots. I bet you won't get anything much different from 2V.

Ket

05-13-2009, 06:10 AM

Its very likely the memory would work absolutely fine with 1.74v, XFX don't need the memory to do 2GHz, just 1.8GHz, in which case 1.74v would be enough. Samsungs own spec sheet shows the part below their HJ1As only needing around 1.8v.

Blazer_

06-11-2009, 11:49 AM

Mescalamba

06-11-2009, 12:25 PM

Hello dudes. :)
Do any one can i bios mod this thing ? I bought XFX HD4830 today (XFX cooler, Zalman VF 1000 is waiting) and i want more vcore to GPU with bios mod if it is possible.
Or, can i flash Asus bios and use Smart Doctor to increase vcore ? :p

This is my "first" ATI craph, last one was 9600XT, so i dont know much these things..
I think i dont want harmod this thing yet..testing first possible bios mod.

Thanks a lot :)

http://www.techpowerup.com/rbe/

Extract your BIOS, mod it, flash it back and be prepared with backup GPU, in case something went wrong. I'm not sure that you can push voltages much without vmod. Maybe pencil mod?

Paxi

06-11-2009, 12:30 PM

You can´t really mess something up. Yust open your Bios with RBE, set max value from voltage table. Don´t touch 00 und 01, there are just for startup/2d.
After that save bios and flash with Atiflash.

Blazer_

06-11-2009, 01:24 PM

Thanks a lot for quick response !
I will test bios mod tomorror.

Can someone link pencil mod ?
I search yesterday, but i didn't get it..where i should and how put pencil..(sorry about my english..)
But i think that is very easy job, when i just get it. :rolleyes:

How much with pencil mod is vcore ?

My XFX goes 720/1060Mhz with stock cooler, tested by GPUTool.
Nice program btw :p

Core will go maybe ~10-15Mhz more with Zalman, luckily.

Damn these rams sucks, 8800GT did awsome job, 2250Mhz 24/7 :clap:

e. :banana::banana::banana::banana:, it is 1.258v already..can't increase, damnit.
But can i put "clock info 00" 1.129v and core 300Mhz, does it drop idle watts..i?
It would be nice too, if i can drop idle watts :)
So..it seems to bee like i have to just test pencil mod.

ownage

06-11-2009, 01:29 PM

No-one tested these babies on water yet?

BeepBeep2

06-11-2009, 03:40 PM

But can i put "clock info 00" 1.129v and core 300Mhz, does it drop idle watts..i?
It would be nice too, if i can drop idle watts :)
So..it seems to bee like i have to just test pencil mod.

If thats the 2D clock then yes, but if you set the core too low it will most likely go black of BSOD. (When the GPU is in protection mode it goes to 300) stock setting is 500 Mhz, it can't hurt to try maybe 400.

JamesBong420

06-11-2009, 04:14 PM

No-one tested these babies on water yet?

actually i have one on water right now... i have her vmodded but never got around to testing for max(so far 800/1150).. looks like i have some fun to do...:yepp::p:

Blazer_

06-11-2009, 04:14 PM

If thats the 2D clock then yes, but if you set the core too low it will most likely go black of BSOD. (When the GPU is in protection mode it goes to 300) stock setting is 500 Mhz, it can't hurt to try maybe 400.

Hmh..400Mhz for core, what about volts, what do you think how much i can drop them ? It sucks if i get only black :rofl:
But, i have 2x pci 16x and couple graphs so i can flast it stock.

Can't find pencil mod instructions...:down:
I herd that vcore is with pencil 1.45v ? I think thats too much..~1.35v would be nicer..24/7 i mean..is that possible ?
And i am going to tweak some how 2D clocks down and volts :yepp:

Mescalamba

06-11-2009, 06:34 PM

Hmh..400Mhz for core, what about volts, what do you think how much i can drop them ? It sucks if i get only black :rofl:
But, i have 2x pci 16x and couple graphs so i can flast it stock.

Can't find pencil mod instructions...:down:
I herd that vcore is with pencil 1.45v ? I think thats too much..~1.35v would be nicer..24/7 i mean..is that possible ?
And i am going to tweak some how 2D clocks down and volts :yepp:

Well I haven't find any on XS, only ones for MSI via Google.. but not sure if MSI use same PCB.. probably not.

vCore increase depends how much of pencil you use.. if it can be done, there can by only slight increase in voltage.. tough it would probably need some help from ppl that understand how to do that with this graphic card.. which is certainly not me, cause I'm not even able to understand this hardmod (I need some picture where it is clearly visible what I should solder where, than its easy:).

Tough.. it looks like founders of this thread doesn't look here anymore.. if yes.. can you make some guide for dummies? (and for pencil mod, if its possible:) ) Thanks much..

ownage

06-12-2009, 12:14 AM

Well I haven't find any on XS, only ones for MSI via Google.. but not sure if MSI use same PCB.. probably not.

vCore increase depenlyds how much of pencil you use.. if it can be done, there can by only slight increase in voltage.. tough it would probably need some help from ppl that understand how to do that with this graphic card.. which is certainly not me, cause I'm not even able to understand this hardmod (I need some picture where it is clearly visible what I should solder where, than its easy:).

Tough.. it looks like founders of this thread doesn't look here anymore.. if yes.. can you make some guide for dummies? (and for pencil mod, if its possible:) ) Thanks much..

I know that the MSI 4830 OC (runs on stock speeds), has a non-reference pcb, and an extra phase. Beefy VRM for sure, and probably a different vmod. I ordered one :D A friend of mine has his MSI on 775mhz, max benchable 825mhz. Slightly vmodded and still stock cooling. :D

I keep hearing stories the XFX is still the best clocker?

Paxi

06-12-2009, 01:20 AM

So has anyone got a working vmod for this card now? Expect Bios Flash and Pencil. I´m not that experienced in modding cards but i only saw some measuring points on the card so far. Would be very nice if somehere could up a full vmod with pictures and some instructions.
http://www.xtremesystems.org/forums/showpost.php?p=3757957&postcount=48 celemine1Gig already posted some theory but i can´t really do something with this without pictures.

Mescalamba

06-12-2009, 04:30 AM

Mescalamba

06-12-2009, 04:31 AM

I know that the MSI 4830 OC (runs on stock speeds), has a non-reference pcb, and an extra phase. Beefy VRM for sure, and probably a different vmod. I ordered one :D A friend of mine has his MSI on 775mhz, max benchable 825mhz. Slightly vmodded and still stock cooling. :D

I keep hearing stories the XFX is still the best clocker?

Yea, thats the one I saw. Well, XFX can be good clocker, but without working vMod, its worth nothing.. tempted to buy MSi as well and maybe put it under water, with some custom block..

Lol, I have a idea.. why we don't ask XFX direcly, how to voltmod their graphic card? :D

Blazer_

06-12-2009, 05:11 AM

Lol, I have a idea.. why we don't ask XFX direcly, how to voltmod their graphic card? :D

Sounds good for me, but should i email them or what ? :shrug:
I just installed Zalman to XFX, let's see how this thing clocks now.
I have no heatsink on memory, i forgot.:ROTF:

Blazer_

06-12-2009, 07:14 AM

http://www.aijaa.com/img/t/00652/4354282.t.jpg (http://www.aijaa.com/v.php?i=4354282.jpg)

Is 2D and 3D clocks OK now ?
Just flash and it works.. :confused:

(I tested those volts and clocks that they are OK)

Mescalamba

06-12-2009, 09:23 AM

Sounds good for me, but should i email them or what ? :shrug:
I just installed Zalman to XFX, let's see how this thing clocks now.
I have no heatsink on memory, i forgot.:ROTF:

I was just joking.. :D

Heatsink for memory? Usually not needed but depends whats on HD 4830.. DDR3?

Snowman89

06-12-2009, 04:42 PM

No-one tested these babies on water yet?

Did a run with a sapphire 4830 yesterday on dice. first test with 1.55v vgpu and 950/1280 flew past. No problems, had some trouble with my cpu after so i didnt have time to test more :(

Getting a waterblock this week for it :) How much voltage is safe for 24/7 use? Will the vrm's take dmg from to high voltage or what would happend?

Mescalamba

06-13-2009, 10:36 AM

Did a run with a sapphire 4830 yesterday on dice. first test with 1.55v vgpu and 950/1280 flew past. No problems, had some trouble with my cpu after so i didnt have time to test more :(

Getting a waterblock this week for it :) How much voltage is safe for 24/7 use? Will the vrm's take dmg from to high voltage or what would happend?

If you have watercooled VRM, no need to worry I think.. should survive like 1.6-1.7V maybe.. 24/7.. hm probably something that allow you OC high and keep temps low or average? :) Only problem with voltage is electron migration and thats caused by high temperature and high voltage.. so if you keep temperature ok, no need to worry.. at least it works for CPUs. :)

Snowman89

06-13-2009, 01:09 PM

If you have watercooled VRM, no need to worry I think.. should survive like 1.6-1.7V maybe.. 24/7.. hm probably something that allow you OC high and keep temps low or average? :) Only problem with voltage is electron migration and thats caused by high temperature and high voltage.. so if you keep temperature ok, no need to worry.. at least it works for CPUs. :)

Sorry, i will have the gpu water cooled. The vrm just have a pretty big heatsink on them (same size as the 8800gt had on their vrm). Then a chassi fan blowing some air onto it.

Mescalamba

06-13-2009, 02:10 PM

Sorry, i will have the gpu water cooled. The vrm just have a pretty big heatsink on them (same size as the 8800gt had on their vrm). Then a chassi fan blowing some air onto it.

Should be ok, but really can't say how much it will survive.. it will have some limits and one of them will be heat and effectivity of cooling.. as usually.

Snowman89

06-13-2009, 05:31 PM

Should be ok, but really can't say how much it will survive.. it will have some limits and one of them will be heat and effectivity of cooling.. as usually.

Yeah but im aiming for 1.5-1.6v depending on temperatures and so. Will try and keep the gpu below 50-55C load. Got no idea really what temps to expect :)

Blazer_

06-16-2009, 06:26 AM

How i can OC more with CCC ?
It only can make 700MHz max to core :(

Mescalamba

06-16-2009, 07:38 AM

Download Radeon Bios Editor from techpowerup.com and look into Aditional features, theres way of increasing OC in CCC. Tough, useless for my HD 3870. :D

JamesBong420

06-16-2009, 09:18 AM

How i can OC more with CCC ?
It only can make 700MHz max to core :(

new riva tuner works well... the 9.5's did not like my modded bioses..

Blazer_

06-16-2009, 10:02 AM

new riva tuner works well... the 9.5's did not like my modded bioses..

Riva Tuner dont work with Win 7 :(

e. Tes, i try mod bios and i will do there 2D adn 3D profiles..

Mescalamba

06-16-2009, 02:02 PM

Riva Tuner dont work with Win 7 :(

e. Tes, i try mod bios and i will do there 2D adn 3D profiles..

BIOS mod is probably best for permanent OC.. if you are sure, that card can handle that. When its working, you are free to use your card anywhere and reinstall your OS anytime and OC will be still there. :)

JamesBong420

06-16-2009, 02:25 PM

BIOS mod is probably best for permanent OC.. if you are sure, that card can handle that. When its working, you are free to use your card anywhere and reinstall your OS anytime and OC will be still there. :)

well with the two 4830's i have, with 9.2+ drivers installed. any of the modded bios's i have made black screen 9 out of 10 times after the windows loading bar...

Mescalamba

06-16-2009, 02:42 PM

well with the two 4830's i have, with 9.2+ drivers installed. any of the modded bios's i have made black screen 9 out of 10 times after the windows loading bar...

Never happened to me.. wierd. Too high freq? Or too low idle? You have XFX? Or something else? Maybe some manufacturers have some internal BIOS protection which prevents. Still.. I've modded few cards this way and all fine..

Blazer_

06-19-2009, 06:18 AM

BIOS mod is probably best for permanent OC.. if you are sure, that card can handle that. When its working, you are free to use your card anywhere and reinstall your OS anytime and OC will be still there. :)
Yes, I bios mod my 8800GT about year ago. I liked it, core 600MHz => ~745MHz
Shader 1500=>1800MHz and mem stock v 1800=>2250Mhz 24/7 :p:

I will now mod my HD4830 bios, first time mod ATI :rolleyes:
I am not sure about the 2D clocks, i mean, will it work, so i dont touch them.

Blazer_

06-19-2009, 08:17 AM

lol :rofl:

http://www.aijaa.com/v.php?i=4387148.jpg
http://www.aijaa.com/v.php?i=4387142.jpg
http://www.aijaa.com/v.php?i=4387144.jpg
http://www.aijaa.com/v.php?i=4387145.jpg

wtf :confused:
Windows can't find drivers, i already try re-install drivers but no.

I did flash the card in windows..i didn't find instruction how DOS :shrug:
But i don't think thats the problem, i will try now XFX own bios.

e.
Aww..http://www.aijaa.com/v.php?i=4387142.jpg
DON'T touch that :)