I think you mean now, good job.
How much were you able to get before you pencil mod'ed?
Anyone know if there's a pencil mod for the 4870?
Printable View
I think you mean now, good job.
How much were you able to get before you pencil mod'ed?
Anyone know if there's a pencil mod for the 4870?
yeah I meant now, thanks for spotting that :)
At stock vGPU I can do 710mhz.
And no I don't think there is a pencil mod for the 4870, only hardmods.
I find it strange that a 4850 with less power (1 6 pin whether then 2) can manage to get up to 800-900 core easier then the 4870's and with lesser measures.
Eh guess that's true
power supply is not an issue. My PCI-E slot can supply 150w while the PCI-E plug can supply another 75W. That should be more than enough...
Also I am using around .05v more than a 4870 and most 4870s can do 820-880mhz with good cooling on stock voltage.
Quote:
Originally Posted by Caveman787
thanks for the info. omg im scared already need to hide :rofl:
i just wanna try 4870 cf. its arriving on tuesday or wensday gonna give ati a shot again been a sort of nvidia fanboy since my bad experience with ati long time ago
might wait on the t-rad2 wish it would be super slim so i can add a good fan to it may a slim type of fan like the scythe one, 100mm x 100mm x 12mm http://www.scythe-usa.com/product/ac...12_detail.html hope this would fit
may I use this BIOS on Sapphire HD4870 ?Quote:
Originally Posted by dejanh
The people in the other thread have not had much success with the XOC BIOS. Seems people prefer the ASUS TOP BIOS.
thanks
supposed I want to use GPU Voltage Mod (soldering) on 4850/4870 should I firstly flash oryginal BIOS to moded one? or may I just solder 100K and so on..
okey, not in purpose i just disolderd all the 4 points circled in the green circle in the picture(the 2 of the pencil mod and the other 2 ones in the bottom of them)
now the card doesn't work... is there any way to fix it? maybe to get the VGPU back to it somehow?
Kid, how did you get the ridicules idea that Diamond lied if you can't overclock the card to "950/1200"?! :rolleyes:Quote:
Originally Posted by dejanh
(1) You are a fool to assume that I am a kid as I'd be betting I'm older than you. Next time, save your semi-derogatory comments for your buddies. This is a public forum so I'd ask you to both reserve yourself and to keep your snot-nosed comments to yourself.
(2) I am not expecting the card to clock to 950/1200, the card is not stable at factory clocks of 800/1100. So far I have tested 6 cards on three different systems and none could complete 1h+ of ATITool or more than 20 minutes of FurMark without artifacts or crashing. The problem however is that Diamond sells this card as a "superior overclocker" using a "customized bios engineered to unlock higher speeds" but they conveniently forgot to do anything on the card other than package it with a customized bios that allows you to crank the OverDrive to 990/1200 and click apply. Do you see a problem here, 'cause I sure do :)
So "kid", go troll elsewhere ;)
the kid has a point.
If you don't know soldering, you shouldn't attempt these mods.Quote:
Originally Posted by stingush
What do you mean by desoldered? Did you remove all the solder from the pads? Is there a hole left on those points (it could've been a via)?
This grossly contradicts your previous statement, where you said that "a card that states [it] should be able to OC to 950/1200" and then blame Diamond for "lousy lying".Quote:
Originally Posted by dejanh
This IS infantile nonsense defamation!
Hello!Quote:
Originally Posted by gurusan
Can you make a high quality picture from your mods? And what kind of pen did u use? How strong grafit? I used 2HB and it's impossible to draw lines with that on PCB, it just wont stick :D
I don't see the contradiction. Did Diamond state that the XOC is a "superior overclocker" using a "customized bios engineered to unlock higher speeds" (quoting Diamond's words)? Yes they did. Did they claim that the cards will be able to overclock to 950/1200? Yes they did (look it up on the net if you don't believe me). Did anything they claimed live up to the hype they built and the specifications they stated? No it did not. Therefore, Diamond simply lied. Either that or their engineers are too stupid to be able to tell what is required to push these cards to the stated levels of performance and thereby made an honest albeit ignorant mistake :)Quote:
Originally Posted by Katzenschleuder
Anyway, that's the last comment I will make directed at you. I am going back on topic of 4850/4870 voltmod.
How are people finding the temperatures of their VRMs after volt modding the 4870. I am finding that especially on the memory, the VRMs get quite hot, to a point where they were burning off the foam that covers the VRMs on the stock cooler, and this is only at 1.62V. I know for a fact that this memory is rated to maximum 2.0V. We should definitely be able to push it to at least 1.8, 1.85V without problems :s
I think my VRMs get to about 80C atm...
latest everest beta can show vrm temps, so can the next gpu-z version. gpu temp #1/#2/#3 in gpu-z are not the VRM temps
So I guess us 4850 users can't see our vrm temps?Quote:
Originally Posted by W1zzard
Hi,
there's some pencil vmod for the hd4870 cards?
Thank you.
Bye
Care to share the latest GPU-Z? I have the 0.2.6 and it does not show VRM temps. In terms of the #1/#2/#3 temps, I already ate my own words, hehe :DQuote:
Originally Posted by W1zzard
I am using Everest now to show the VRM temps. They get pretty darn high on the 4870, as you will see later in this post...
@MonsterMash - there are no pencil vmods for the 4870, only hard mods.
Finally, an update on the latest state of affairs on my end of successes (and numerous failures) volt-modding and finally OCing the 4870 XOC BE.
I managed to stabilize the last 4870 XOC BE I got. I am currently running at 850/1150 with 1.350V on the core (core voltage obtained through volt-mod) and 1.501V on the memory (stock memory voltage). ATITool is artifact free, 3DMark06 can run all test, including features and batch tests for hours without problems. Crysis benchmark runs without a hitch as well. Still no go on the FurMark. I realized that the reason it crashes is because the VRMs get way to hot. Using Everest I read the VRM temps at the moment when crash occurs in FurMark and they are as hot as hell. In fact, they pass 125C mark when FurMark blows up, which is much too hot. Unfortunately, there is no obvious solution to me at the moment that would do a better job at cooling the VRM. I installed the HR-03 GT which comes with bigger heat sinks than those with the Zalman VF1000 and the added fan blows a bit onto the VRMs. I could mod a fan to blow specifically on the VRM heatsinks, but I do not really care. In games the VRMs never pass 95C, so I am okay with that. It seems that I will be settling on this clock unless someone can help out with the VRM temps. I can push things to 875/1150 with 1.43V on the core, but I do not see the 25MHz gain to be justifiable for added 0.08V. It's not 950/1200, but I guess it is not bad. Only thing that sucks is that no matter what a core volt-mod is required if you truly want a rock solid stable 4870 XOC BE card. :)
If anyone has any suggestions on what to do to lower the VRM temps some more, I'd gladly try them out. Currently, that is my bottleneck to going higher with volts on core and memory needed for higher clocks. On every cooler so far VRMs were not cooled adequately (VF1000, HR-03 GT, stock). On the stock cooler the VRMs were burning off the thermal foam that contacts them. This is the single biggest determent I think to being able to OC higher. My highest core temps never pass 62C with the HR-03 GT. The single reported core temp actually never passes about 57C.
So, any advice on improving VRM cooling to try out that does not require taping a fan to the back of the card?
Try this.... It seems to help over hereQuote:
Originally Posted by dejanh
http://img329.imageshack.us/img329/880/3d0648502vf2.jpg
Sinks originais voltam para os Mosfets
http://img112.imageshack.us/img112/4083/tune2vi1.jpg
http://img530.imageshack.us/img530/7481/tune1ul8.jpg
the soon to be released Accelero Twin Turbo might do a good job of cooling the VRM's. its dual fan design looks like it will force cool air over the entire video card. they were supposed to be released last month and no sign of them yet. maybe the delay in release has something to do with the hot VRM's on our 4870's. hopefully the people at AC are working on a good cooling solution. they specifically mention the 4870 on its list of supported cards.
That's a good idea, but it unfortunately does not work for the 4870.Quote:
Originally Posted by Barr3l Rid3r
(1) The stock cooler does not have a specific VRM heatsink. It is just touching the VRMs with the frame of the whole stock cooler. Not much cooling going on there either as the stock stuff burns under the heat of the VRMs.
(2) It seems a heatsink alone is not enough on the 4870 VRMs. They just get too hot.
Yeah, but I really do not want to be buying yet another aftermarket cooler. Especially since I am not even sure how it would perform. I have the HR-03 GT on it now, and it does a helluva job cooling the GPU so I'd rather not change it. However, the VRMs do need something. Maybe a larger sink would work. I was considering buying this http://www.thermalright.com/new_a_pa...50aHVzaWFzdA== and actually attaching it to the video card VRMs. It is meant for motherboards, but hey, I can't see how it can hurt :) I am only concerned about the mounted weight. I think if I used Arctic Silver Adhesive it will hold, but I'd rather not as it makes removing impossible. I do not see 5 pieces of tiny thermal tape holding this up. Then again, I saw it in the store, and it is pretty small. It seems a lot bigger on the site.Quote:
Originally Posted by xMrBunglex
Ok, because of my crazy temps I may have come up with a solution. Lower the volts. Sounds crazy right? ;) Well here's my logic. I know that people can get higher clocks than 750 mhz with a voltage that's less than 1.33, and because the voltage is obviously too much for my card, I could probably lower it to decrease temps, but at the same time increase the overclockability because of lower temps. Is this logic correct?
Oh, and the smart guy that said 1 2 and 3 are not vrm temps was w1zzard for those who were wondering about my previous post. :D Hey w1zzard, can you post up the latest gpu-z and everest?
Sort of, in a convoluted kind of way. Lower volts however will result in lower overclocks as a rule of thumb. After all, the whole point of increasing volts is to be able to achieve higher clocks. However, if your temps are killing you because of higher volts, then maybe you do need to lower them to achieve a stable overclock.Quote:
Originally Posted by mth91
Oh and I'd like that GPU-Z as well :)
@dejanh - What are you using to measure the VRM temps ?
Personnally I bought a chipset heatsink a bit like this one:
http://www.topmarket.co.il/products_...hermaltake.jpg
Cut it in half, slapped it on the vitek and pulse chips and bent slightly the fins to make way to the HR03-GT. But I don't have any IR thermometers to check if the temperature improved. Everest 4.50 tells me it doesn't but everest readins seems to be wrong ...
I too am using Everest, but to me the temps seem right. When the VRMs are showing as > 100 they are pretty damn hot, you cannot even touch the board. With FurMark, they get up to 126C :eek:
Either way, see the attachment for yourself :)
By the way, VITEC and Pulse chips are not the ones heating up like mad, it is five little chips next to the VITEC and Pulse when looking towards the back of the card. It is the ones that the stock cooler would touch with that foam stuff just at the edge of the fan opening.
Edit: it is the god damn VRMs. Or something on the back of the board. I just moved my 120mm fan to blow directly onto the back of the card and guess what, as I am typing this I am 322 seconds into FurMark and still going no problem. By the time I finish this it will be over 7 minutes of FurMark at 850/1150, I never managed to do that so far. Screen shot is included (still running too...)
Well, it seems that the VRMs are in fact the reason for limited performance. They are not being cooled adequately to deal with the excess volts when volt modding. If I place a 120mm blowing directly onto the VRMs I can push the volts to 1.45 and the core to 880-890 with rock solid stability. At the same time, I can push the memory higher as well to 1175 or even 1200. But this is all and only with much more cooling on the VRMs. I think that with a massive VRM heatsink and a fan I could likely break 900 on air. Bah, what the heck do I do now to cool the VRMs? Maybe I should try that Thermalright MOSFET heatsink I pointed out earlier...
@1) In fact 4870 has even better solution, do it this way:Quote:
Originally Posted by dejanh
http://tiesie.gmxhome.de/GK/so%20nicht.jpg
Just DO NOT PUT THOSE FEW MEMORY HEATSINKS IN THAT HOLE LIKE ON THIS PICTURE! Just use the red plate, and nothing else. If you want, you can stick few more heatsinks on top of red plate to have more dissipation space, but I haven't tested it so don't know if it would help.
@2) ofcourse heatsink is not enough, you have tu have AIR running over it :D So just add your HR-03 once you put this red plate, and than stick a 120mm fan on top of it si it pushes some air over the rear of the red plate if possible - like this
http://tiesie.gmxhome.de/GK/GKAC12cm.jpg
Since HR-03 is smaller than S1 (on picture), and is mostly over GPU socket, the fan probably won't be pushing a lot of air over VRM part in the rear, so you can maybe add one more 120mm fan just over where VRMs are like you've said you did in the later posts.
And that's it!
- People, you know the most about the voltage is possible only by increasing the voltage to obtain the BIOS?
Are you using part of the orignal cooling that came with the 4850?Quote:
Originally Posted by Barr3l Rid3r
Is that just a regular S1 with a fancy fan system on it? -__-Quote:
Originally Posted by xMrBunglex
This is what my 4850 will look like :P This is what my 8800 gt currently has
http://img.photobucket.com/albums/v5...o/DSC02270.jpg
Oh, and my 4850 is at my front door. YES!
IMHO, AC Twin Turbo is inferior to S1. It's not exactly same heatsink, and fans are also not exactly the same as Turbo Module. HS is smaller, an that's why I'm saying it's inferior, but we'll have to wait and see the results. On the other hand, I preffer 2x120mm rather than 2x80mm :DQuote:
Originally Posted by drizzt5
here's a very high quality picture of my card and my sittuasion... the card doesn't work at the moment, is there anything i can do? :
One thing i've learned in my year and a half of overclocking is that w1zzard is right. Those #2 and #3 temps are not vrm's and memory. I have good heatsinks on my vrm's and memory, and a 130cfm fan blowing over them, and the temperatures did not improve when I put that fan on there, which proves that they are part of the chip itself.
To the guy above me, no, with damage like that there's nothing that you can do about it. Sorry.
clean off all that flux and maybe we can get a better look at the pcb to see if its actually damaged. use an eyeglass screwdriver very carefully and lightly to scrape at the flux (all the brow "stuff") and it should flake off pretty easilyQuote:
Originally Posted by stingush
Sorry to say but thats a dead card. If you could even replace the parts on top, no telling how much internal damage is done on the PCB. What happened?Quote:
Originally Posted by stingush
Just use rubbing alcohol or acetone, the flux will come right off.Quote:
Originally Posted by SNiiPE_DoGG
Can the next one read it on the 4850's though? Is there a VRM sensor for the card even? I know it doesn't show up in Everest for mine but not sure if thats because I got 2 cards or not.Quote:
Originally Posted by W1zzard
i also think its dead... but i think that after i will clean the flux i will get it back to the store and they will replace it... i think its almost unnoticeable...
no, 4850 does not have the voltage regulator ic that the 4870 has, so no vrm temp readings. see the thread here about "gpu temp #2 is vrm?"Quote:
Originally Posted by deathman20
It looks like you have board damage there. Try to clean the flux off but I highly doubt that it'll work.Quote:
Originally Posted by stingush
You can return the card to the store. I returned mine back back to Best Buy and got a new one but I'm not proud of doing so.
The new one is clocked to 850/1100 though. :D
That's a good idea. However, the stock plate cannot touch the VRMs or the memory chips. I need to use thermal pads in between and they suck bollocks. Is there any way to get the stock plate lower to the card to a point where you do not have to use pads but can use AS5?Quote:
Originally Posted by LuxZg
the nice thing about the Twin Turbo is that it will fit in two slots, so it's CrossFire compatible. my motherboard only has one empty slot between my PCI-E slots, so i can't use giant heatsinks.Quote:
Originally Posted by LuxZg
i also like the fact that it has two fans - one directly over the GPU and memory and the other fan over the VRM's. it looks like a solid design to me. i'll probably buy a pair when they're released and report my results.
Quote:
Originally Posted by drizzt5
No thats a Zalman VF1000, and yes I'm using part of the original cooling.
ok went to the store today and they have replaced me the card by a new one looks like this at the moment...(just waiting for a voltmod but i'm not sure im gonna make one after what happend) :
http://img369.imageshack.us/img369/2...0002255mk8.jpg
http://img110.imageshack.us/img110/7...0002257lf4.jpg
stingush - LOL @ Intel fans on Accelero :D But those are very good fans usualy, so nice idea :D I still preffer 120mm though ;)
im 2 lazy to go to the store and buy 2 120mm fans... also i dont think there's so much diffrence between the intel and 2 120mm fans cause those are VERY powerful and efficient... it can do like 70-80CFM each...
and the temps are 36 idle and 47 load when ambient is like 27-30...(outside here its like 34-36)
No more 4870 XOC. I got rid of it. That card has been more headache than it's worth. All of the XOCs in fact are junk. There has been no people reporting it to work properly so far, and even NCIX staff admitted that they are getting unusually large number of returns on the 4870 XOC cards, and for that matter on the 4870s in general. At least the BIOS is released, as useless as it is really. Looks like I'm back to using my lowly 9600GT for a while still, until all the kinks are removed from RV770 or NVIDIA potentially trounces them with the new 55nm GPU. At least I can run the 9600GT at 870/2147/1100 (2200 effective) :yepp:
Now that's an OC from stock 675/1665/975 :D
Agreed, some better cooling is needed, lol. I would love a CoolIT system only for cards, so I don't have to have water on everything.Quote:
Originally Posted by CandymanCan
Now, you'd think you can change your core volts there wouldn't you? Well, they are display-only values so enjoy looking at them :D Seriously though, you can't set voltages there.
Well, watercooling is even more funny than these large air-coolers :)Quote:
Originally Posted by CandymanCan
You have one "heatsink" that's REALLY large (radiator), and 2-3 big fans on it (if you want it to cool whole system), so you're already at the same weight/size/fans amount us with common air coolers are, plus you have to bother with liquids and pumps :p: ;)
Now, if you would have fridge-cooling, that would be altogether different stuff :D
Hi, I’ve been running Diamond XOC BIOS for two week now and it's absolutely one of the kind. It lets me OC using manual fan speeds through CCC and that is really convenient. It's just that diamond didn't modified their fan speeds and card gets even more overheated, before flashing this BIOS I defiantly recommend adjusting fan speed first. I just change lower level from 58 degrees till 49 degrees and the card gets nice cool and quiet 71 degrees on donut test. :)
By the way vendor’s subsys ID on my card (Club3D) and Diamonds were the same. :)
Now comes the question. :)
The guy, named guess2098 in this thread mentioned that it is possible to BIOS vmod 4870 till ~1.3V by using some new method, but unfortunately his to busy to answer. :) Does anybody know how to that exactly, I need certain vid's to write into RBE, or maybe it's done with HEX editor?
Thanks!
It's NOT possible my friend, I wish it wasQuote:
Originally Posted by Dirton
But real tekkies have made this absolutely clear
There is no soft vcore bios mod or trick to give your 4850/4870 more juice to core or ddr's through bios
you have to do a HARD mod fullstop period end of discussion.
He input higher values through RBE and flashed his card
then he ASSUMES that just because he's now stable at higher clocks it must be the increase in vcore that's responsible
But does he even have a DMM to measure the actual REAL volts??
No, no he doesn't, nope nope nope
anyway, I see he got some fast reps so he's happy ;)
p.s anyone know if there's a way to soft mod the 4870's with more volts? :ROTF::rofl:
I don't think that question could be asked any more times. :rofl:Quote:
Originally Posted by Alcibiades
a mod should sticky to the top of the video card section and this section in bold: NO YOU CANNOT RAISE VOLTAGES ANY OTHER WAY THAN SOLDERING ON A 4870!!!
Anyone happen to know the stock MVDDQ voltage for the HD4870? I'm using a 10k ohm resistor on it, and no matter how low I turn it's always reflecting 2.08v on idle and 2.10v on load. However, MVDDC I can tune extremely accurate with a 10k ohm pot.
Well it's just not right, digital VRM and no soft voltmod.... only a matter of time someone unlocks the BIOS.Quote:
Originally Posted by SNiiPE_DoGG
By the way 4850 can be vmoded through BIOS, here's currently known VRM generated voltage steps:
1048
1082
1123
1153
1156
1158
(There is a theory that there is now lower limit, but driver doesn’t let you apply lower then there is in BIOS)
Well can take if there is now way to upper default voltage limit, but I at least need to make 2D voltage lower before applying soldering/el. glue VMOD. Isn't that what Power Play 2.0 should be all about?
Mine reads 1.51 for both MVDDQ and MVDDC.Quote:
Originally Posted by NCspecV81
Quote:
Originally Posted by Skauneboy
Why would mine showing 2.0-2.1v w/o a VR on it? I haven't done a pencil mod and I've flashed to the ASUS TOP bios. My MVDDC reads 1.51v at stock levels.
Stock MVDDC and MVDDQ volts are 1.501V. Your resistor is too high. Get a 25-step 5k trimmer.
Just because it is digital does not meant that you can adjust it digitally. Maybe it has some default preprogrammed voltage states you can switch between, but cannot go outside of regardless. These are very likely outside the scope of the card BIOS. Either way to put it simply, there is not and will be no BIOS voltage mod for the 4870. But, I guess you can always keep hoping :pQuote:
Originally Posted by Dirton
Quote:
Originally Posted by dejanh
There is not a resistor on it any longer as I pulled it to make sure it wasn't an incorrect pot or position in the dial, but It still reads 2.0-2.1v on the MVDDQ. It's the same voltage regardless of the present of the pot or not.
Are you talking about a 4850 or a 4870? If it is a 4870, I'd take that thing back fast because it will blow up any second. The critical voltage limit for the Qimonda 40X GDDR5 chips is 2.00V.Quote:
Originally Posted by NCspecV81
Okay, I guess it's going back to bestbuy for an exchange. Think there could be something bridged on it?Quote:
Originally Posted by dejanh
Sure seems like you have a short somewhere. Either way something is very wrong.Quote:
Originally Posted by NCspecV81
NCspecV81 - why don't you flash it back to stock to check just once more.. Maybe ASUS did something veeeeryyy naughty in their BIOS (somehow)
i'm completely noob with this.
i just want to ask what settings to use in the digital multimeter to measure the voltage?
i already killed 2pcs. 4850 because of the pencil modding without a multimeter
how can i measure the idle & load voltage of the card?
is it safe to measure the voltage while benching or doing some stability test to get the load voltage?
sorry for my bad english :D
thanks! ;)
Yes, it's safe as long as you don't touch nearby contacts. In load PCB gets about 100 degrees, so try to do it quick until you burn your fingers. :)
Set direct current voltage on your multimeter.
ok.
while penciling the blue one
http://img179.imageshack.us/img179/1...cilvmemkn5.jpg
does the vmem measure point in the image below is the one to check the resistance? or the one i'm shading in the image above?
http://img516.imageshack.us/img516/4547/overviewxh8.jpg
sorry.
thanks
I'm preparing to pencil mod my 4850, I just got done doing a bios flash. I can't clock any higher then I could before (I think I can clock lower) and an unusal thing happened. On load i used my DMM and it said that there was 1.3v's going through the vgpu....
All i did was flash the bios ? I don't think it's suppoused to go that high?
Did I measure it wrong? If I don't have something properly grounded will it measure higher then it's suppoused to? And I'm still on the stock cooler for the moment (my s1 is sitting right next to me, ready to go) and my temps seem good. I don't think I'm measuirng correctly. But I tried all 3 of the vgpu spots that I know of.
Anyone have any suggestions?
Quote:
Originally Posted by LuxZg
I did, and it was fubar. Not sure what happened there. I exchanged it and flashed to the ASUS TOP bios again. Everything is fine. Volts are matching on both memory voltages. I just got it soldered up a minute ago and I'm testing'er out!
NCspec - at least you got your new card right away ;)
Btw, RBE 1.13 is OUT! and it has some niiiceee features like overdrive limits unlocking and lower 2D voltages for 4870 cards :) Check it out here!
Wow, this really makes the 4870 XOC BE obsolete now, lol :p:Quote:
Originally Posted by LuxZg
Well, let's just say it this way - it gives you a choice :D ;) Now you can add lower 2D voltage to ASUS bios, and add even higher Overdrive settings.. Btw, just popped into my head few minutes ago. This "tweak" allows lower 2D voltage. But maybe it alows voltage CHANGES in general :shocked:Quote:
Originally Posted by dejanh
So maybe it's now possible to bump voltages a bit in BIOS just like 4850's allowed - that would be nice :up:
Almost 800 posts and there's people killing cards left and right AND some even have edge to recommend others to falsely RMA'ing the cards they killed due to their own sheer cluelessness. I wonder how many "noobers" have butchered their cards already... Dare I even start backtracking the thread?
Sorry to be blunt, but that's just f'ed up. :shakes:
killing cards left and right?
Only 1 or maybe 2 people because they were morons and penciled without a multimeter.
Yeah, I really only noticed a couple of people killed their cards too. Maybe I missed some. However, I do agree that modding without a DMM is a very bad idea. Worse yet, soldering if you do not know how to do it. ;)
Anyone who RMA's a card they screwed while modding needs a long vacationQuote:
Originally Posted by largon
It is clearly stated in the forum rules and these things need to be enforced, Grow a pair and admit you pooched your card not Best-Buy.
The rules since no-one reads them:
10. Theft, Fraudulent activities & RMA's
The management of this Forum does not condone theft, trading in stolen property, fraudulent return of merchandise, or the aiding and abetting of those who do. Any such discussions regarding stolen property or fraudulent returns will be dealt with swiftly, and the offending member risks complete loss of membership privileges in our Forums.
on a lighter note, I just upped my 24/7 clock to 1.38v 880/1150mhz :) Anything past 880mhz requires a lot more voltage.
300mhz 1.08v idle as well. :D
gurusan,
I haven't followed this thread actively so I couldn't tell if there was a mass-extinction going on but I was dumbfounded to find the last 20-30 posts had a toll of several cards... I truly hope those proverbial cases were isolated and the same trend hasn't been going on from the beginning.
If you do a volt mod or bios mod, you void the warranty. To RMA an item that you yourself destroyed is fraud. It's your own business if you want to do this. XtremeSystems does not condone discussion of fraudulent RMAs. No more discussion please.
i have a DMM now but i dont know where to set the DMM. i have an option to choose from 200ohms, 2k, 20k, 200k, 2m, 20m ohms.
please help me where to set that & in which part of the card need to measure the resistance of vgpu and the memory.
http://img519.imageshack.us/img519/1190/overviewgs0.jpg
http://img185.imageshack.us/img185/6...cilvmemzh1.jpg
http://img503.imageshack.us/img503/9...2lh9er5tw6.jpg
i tried measuring the vmems measure point with my DMM but the result is not matching the range shown in the image above.
the result is random & far from the voltage resistance in image above :(
please mark where's the right measure point & the right DMM settings.
sorry for a noob question :(
btw:
i'm using Wheeler WDM-3547 DMM.
please help! :D
thanks in advance
Uh-oh...
I can't even figure out what you're trying to measure?
Voltage or the resistance of the mod points?
so i got a hold of another 4850 to pencil mod (AND NO I DID NOT BLOW MY FIRST ONE, I SOLD IT TO MY COUSIN - STILL RUNNING STRONG 900/1225 1.41 VGPU, 2.07 VMEM), this time i couldn't get the resistor to read under .8 for vgpu, and i kept scratching the top of it so eventually it wouldn't go under .90, then i penciled the pcb b/t the points shown on the pencil mod diagram and got that from stock 5.06 resistance down to 3.40.
so w/ the resistor at 1.0 and the resistance b/t the points at 3.4 i decided to boot up the comp, vgpu was at 2.05. (that was my mistake, but card is still ok).
shut it off immediately and had 1.0 on the resistor, then had 4.5 b/t the points, vgpu is 1.47 under load, haven't tested out ocing the 4850 yet since i am trying to get this 3110 cpu to hit 3.9 stable but i think i got a crappy one.
2.97 vmem? !?
Hi guys,
can anyone post the photo of 4870's v-core measurement point?
Thanks
Is getting a cheap DMM a bad choice? like... if I get a cheap one will it be like "meh, 1.25vgpu sounds about right" when it really is 1.5?
DJSUB, can you post a picture of your DMM plz :P I think you have to set it to 20.
I am using a cheap DMM and it works fine. Just get a cheap digital multimeter from Radioshack or something drizzt
Get a Nimipa 1400 and u should be fine...
k, ashame the one I had didn't work right... lol so much for "top quality"
lol, sorry guru, it was really late last night, should be 2.07 vmem.Quote:
Originally Posted by gurusan
ah ok that makes more sense
is there a vgpu / vmem modification for r700, if so, what clocks are expected?
One of my two cards wouldnt go lower than .9 too, must have spent 2 hours trying, the other one went straight down to .5 with just a few rubs.Quote:
Originally Posted by zbomb5610
I had to use silver paint to get the first card upto 1.4vgpu.
All's well on the visiontek 4870 front. Flashed to asus & e8500.
http://service.futuremark.com/compare?3dm06=7761786
does anyone could tell me whats the voltage convertion of 3.58k vgpu & 3.81k vmem?
how to convert the resistance value to real voltage?
also want to ask whats the voltage of 3.40k
sorry for a noob question.
vGPU 3.58Ω = ~1.65v
vGPU 3.4kΩ = ~1.75v
vMEM 3.81Ω = ~2.10v
ok thanks bro! :)Quote:
Originally Posted by largon
btw : how did you get the real voltage in dmm? is there a settings to get the real voltage?
thanks
Err...
I didn't measure anything to get those values. I calculated them based on the resistance a non-modded card referenced to the values you posted.
For example:
"vGPU 3.58Ω = ~1.65v"
Stock resistance between the mod points is 5.13kΩ, stock voltage is ~1.16v.
New voltage after resistance is lowered to 3.58Ω is:
original_voltage * (original_Ω / new_Ω)
->
1.16v * (5.13Ω / 3.58Ω) = 1.66v
*cough* ~1.65v :P *cough*
thanks bro for the big help! :D :up:
Nobody can help me? :(Quote:
Originally Posted by kur¡