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5870 voltmod
http://img405.imageshack.us/img405/3526/5870vmod.jpg http://img405.imageshack.us/img405/5...pg/1/w1280.png
http://img205.imageshack.us/img205/4933/p0111090002.jpg http://img205.imageshack.us/img205/p...pg/1/w1280.png
5970 voltmod
http://img31.imageshack.us/img31/1748/vmod59701.jpg http://img31.imageshack.us/img31/vmo...pg/1/w1280.png
http://img205.imageshack.us/img205/9412/dsc01092nz.jpg http://img205.imageshack.us/img205/d...pg/1/w1280.png
Sorry if some pics are low res...
Thank you :) Just did it, will post some results :)
Vmem for 5870?
Nice guide Antonis!!!
Show us results!!!! :D
Great guide man.Well done crusty.Thank you :D:D:D
Wow, thank you!
What clocks on 5970?
nice!
Nice guide
:toast:
What about capacitor? How ''strong'' are they? 2.5v 500-1000uF?
You just beat me to it bro :)
I know man and now i owe you a beer...:p:Quote:
Originally Posted by Monstru
Vmem are on the way guys plus some capacitor job as well
Any info / similarity of this to the 5850 vCore mod?
Well done man....now push it :up:
Thanks!!!
I have used Rubycon MCZ 6,3V@1200µF ultra low esr / high quality capacitors. :DQuote:
Originally Posted by quake6
http://www.abload.de/thumb/imgp37505015mg.jpg http://www.abload.de/thumb/imgp375150q05s.jpg
You are the second person who wants to share his mods for 5870... Thanks :)
EDIT:
Taman za natjecanje :D zahvaljujem jos jednom :)
Nema problema komsija!Quote:
Originally Posted by quake6
very nice dude :up:
Should it be the same for 5850?
Nice work!
Can you show, where is the HD5870 vgpu measuring point and it is the same for 5850?
That's pretty leet. Clear guide. Thanks! :up::up:
Hey guys!
Do I see that right, that the caps only "support" the existing caps without changing voltage on the memory at all?
The caps don't change any voltages.
To change the memory voltage you have to soft or hard mod the card ( don't know if soft-mod is possible )
No one who knows where are the f*****g measuring points of 5850/5870, come on guys!!!
Which measurement points are you looking for ?Quote:
Originally Posted by nickless
thats kinda rude don't you think?Quote:
Originally Posted by nickless
I can clearly see from above pics where measure points are......looks to be same as 5970.
You are right, sorry for this, but I ask several times in 2 threads and no one answer me. The are people with hard voltmoded cards and they have to measure somehow vGPU and vRAM, but no one want to share this. 5970 is different PCB, I'm not so sure that measure points are the same, thatisway I ask.Quote:
Originally Posted by chew*
VGPU 1 solder and read points for 5970 = almost identical to 5870 ;)
Looks very easy mod to me, except that cap mod :)
The soldering on the 5970 looks HORRIBLE... Did you use the iron from a wood burning kit or something? :p:
Nice hiwa :up:
2 bad that memory on your HD5870 sucks :shakes:
Samsung memories are damn fragile and they die easyQuote:
Originally Posted by madmax999
no need OC memories higher than 1250/1300 i think, higher GPU core is better :D
Yeah, i agree. We had big problems with memory on our HD5870.
How much MHz more did you get on vcore with CAP mod?
I'd be curious to know as well. And no point for this mod for air / water, or is there?Quote:
Originally Posted by madmax999
air 1070 1.32Quote:
Yeah, i agree. We had big problems with memory on our HD5870.
How much MHz more did you get on vcore with CAP mod?
chiller 0°c 1150 1.45
ln2 :
-40 1200 1.41
-80 1300 1.45
-100/-110 1350 1.46
does anyone know the vmod for memory for the 5870's, does it help much with clocks?
I tried rbe with my memory v to 1.175 from 1.15 i cant get past 1300 . will the caps mod help and whats highest memory v thats safe ?
my cooling of 5870 here
http://i284.photobucket.com/albums/l...m/IMG_5356.jpg
You cannot adjust memory voltage with software.
The voltage RBE is referencing as Memory Voltage isn't correct, in fact it's another voltage, which AMD calls Vddci.Quote:
Originally Posted by rym
5870 memory volt guide ?
I don't to sound pessimistic, but I don't think we'll see any benefits from altering ( raising or lowering ) the memory's voltage.
I need to try it on a few cards first though, so take this with a pinch of salt.
Sadly I couldn't realize OCP/OVP and vGPU for 5850, any possible light on it my friends?
I tested a few 5870's up to 1.65V or so, and didn't get any OVP.
OCP was needed for most of the cards to get 1300MHz pass 3D Mark03, Vantage & AquaMark 3.
OCP mod should be the same for the 5850 ( I'll try to check it out later to confirm that )
So any vmem yet?
No, I didn't confirm it yet, neither talked with George ( Hipro5 ).
I had lots of things to catch up with.
From what I gathered from a phone call though isn't good news, upping or lowering the voltage did nothing for most of the reference cards a few peeps tried and the ones that showed some gains were just 20MHz or less.
Don't think it's worth it at all if that's the case with every reference card with the samsung chips out there.
I'll try to confirm the mods asap and post them unless somebody delivers before I do :p: ( it would be greatly appreciated, I'm working 20 hours per day the last 3 days and that seems to be the case for the whole week at least :( )
Correct... and vDDCI is what seems to be helping up to 1300-1400mhz for mem clocks though.Quote:
Originally Posted by BenchZowner
vDDCI runs off PCI-E slot voltage supply... and not PCI-E power connection... so volts are limited unless you hardmod vDDCI with another power source.. setting 1.4v + LN could bring much faster mem clocks.
*I dont think anyone has tried that mod yet.. might be worth a shot if someone wants to crack 1.5ghz for vmem. Since vDDCI is voltage for I/O on MCH... we could consider this like 'uncore'..?
**vDDCI mod for 5770 could yield WR too... as most are mem clock limited over core anyhow.
Did you try bumping Vddci on LN2 ?
Because most of the people I spoke with experienced a big GPU Core overclock drop with high Vddci under LN2.
i have not... but my question is-> Is the experienced drop from the high voltage itself... or is it from the voltage being drawn through the PCI-E slot is now 'dirty' at the higher level, and causing stability issues...?Quote:
Originally Posted by BenchZowner
Since it seems that raising vDDCI is needed for highest possible mem clocks, it just doesnt seem logical to me, that adding a touch more, would send the OC to the crapper... :shrug:
Well it's a 50-50 scenario.
It could be the case though, just like the Core i7's do with higher UnCore voltage.
We still don't have a clear image of what the Vddci voltage is exactly.
From Garret Wu:
http://i265.photobucket.com/albums/i...ower_vddci.jpgQuote:
VDDCI is voltage of GPU I/O (memory controller & bus voltage between GPU <-> Memory)
VDDCI on R5870 Lightning is using PCI-E bus power, so DO NOT USE TOO HIGH VOLTAGE (1.35V is recommended highest vaule)
*1.6v is doable for vDDCI as well [according to Garret]... unsure of its benefits though
I have modded vddci with little gains . Optimal value is around 1.20-1.22v . It helps RAM clocks a bit .
The first 5870 i modded died cause of vmem . Vmem mod is very tricky and difficult to stabilize . With a small turn on trimmer , the voltage scales very fast and impossible to control it .
It probably needs a fixed resistor and then a small trimmer .
..Hi, sorry for replying this post, but that are the advantages with these moddings?