hi! i'm Andrea, i write from italy...
i have the sparkle spag43(6600), but, i dont overclock my 6600 because there is a nvidia bug that report my 6600 at the default frequency..
sorry... my english is very bad..
i use the pencil for the r87 mod..
my 6600 now work @580-670...but when i select over the 670(memory) this board crash and reselect the default frequency! please helpme!vmem is 2,58...
Andrea
670 for memory is ok.you can attach heatsinks for memory modules to improve cooling and maybe you can rise a little the memory clock.I can not do more than 680 with heatsinks.As you can see we didn't fint yet the volt mod for memory but still trying.
I hope you replaced the GPU stock cooler before volt mod and that you have temperature monitoring activated in the bios.
just don't overclock to much and you will not have resets and throttling.make sure you have good cooling on both GPU and memory and wait till a memory volt mod shows up.
you must know that pencil mod vanish after a while and you will see texture coruption or artifacts when voltage is not enogh for the clock you running.
search on italian forums,maybe you can find something about memory voltage mod and you can help us.
this card relly needs higher memory clock
in italy this graph.board is not famous..
in 3dmark 2005 my score is 3330 pti...
i use the revoltech heatsinks...and with a external sensor i see that the gpu in overload the gpu dont go over 58°c... i build an artigianal cooler for the gpu...
but...i have a great problem with the memory...
at 540/670 are artifactfree.... i can play and bench...
but the mem...hynix 3,3ns dont go over 670 for the software...but 700 is very nearly!i need the vmod!!!
I need the volt mod too.But we can only wait.nodak is our only chance since I don't know electronics.Your 3Dmark 2005 score is very good.I can not do more than 3200 even at 600/680 volt modded.So be patient!
How comes you have 3.3ns memory?I have 3.6 Hynix.
sorry....3,6 hynix!
!we are trust in nodak!
we neeEEEeeEEEEd the VMOD!!!
SALUTI from ITALY!
w la figa!!
Last edited by Andrea20ge; 04-08-2005 at 07:03 AM.
http://people.overclockers.ru/golos2/articles
It's a voltmodding guide of Sparkle 6600 AGP 128Mb by golos2.
The result is impressive - 614/803 and 8272 03'3DMarks. I also have such 6600, now it is running at 570/660 (no mods, just Titan CuD5Tb heatsink on GPU), and I tried to increase memory timings. It gave me 760MHz (+100MHz DDR accurately), but perfomance stayed at the same level. Now I want to make heatsinks for memory chips and get 800MHz with this Vmod.
And if you have troubles with Russian language, I can translate some words.
First, comments on the main Vmod photo:
Green arrows - points of measurement (positive, Ground u can take where you like):
upper - memory
lower - GPU
Variable resistors:
For memory:
100kOhms, large black resistor
For GPU:
10kOhms, small metallic one.
Two other yellow arrows showing ground wires of the MOLEX connector.
Finally,somebody did it! This is great! Congrats for the modder !
Didn't take time to study the mod but I will.I'm a little scared cause I'm not ready for soldering on my card and void warranty.
If we can figure a pencil trick out of this mod will be better for me because I will try to sell this card.
As you probably saw,nodak found a pencil trick mod for GPU wich works very fine.I can do 600Mhz when voltmoding to about 1.55V.
Problem is the memory on this card.I go now at 680Mhz,but I need more.
I can tell you that I get about 3200 in 3DMark 2005 at 595/680.
It was great to let us know about this voltmod.I don't have news from nodak in the last days,but I think he will be happy too.
Thanks a million Ilya!
I'll start studying
Sorry,I forgot to post some news about a voltmod in bios.
A thai guy claims that he modded a bios for higher voltage in Leadtek6600 card.
I asked him to post the bios but he says that is testing.For me is strange because NiBiTor does not show voltage in bios for 6600nonGT cards.
You can read here:
http://www.mvktech.net/component/opt...3312/catid,13/
and here:
http://www.vmodtech.com/modules.php?...howpage&pid=62
seaman
595! Nice freq! =)
But as for me, I don't like pencil-tricks. This method is a way to check out overclocking abilities of a card, but it's usually terribly unstable in daily use. Once I had unlocked 256K hidden cache on Throton CPU with a pencil trick. I saw some problems with proper detecting of this CPU - 50/50 Thorton or Barton, as it like to do. This bug was successfully fixed with soldering contacts of bridge.
By the way, if a mod is carefully made, you can easilly remove all wires and warranty will not be void.
P.S. Today I had made temperature monitoring trick in BIOS, with CuD5TB heatsink it shows 58*C max @ 570MHz after 3-4 loops of 3DMark or 1-2 hrs gaming HL2. Probably, I'll change this heatsink for smth more serious, for example, IceHammer 3600SC. I want to keep temperature in 50-55*C degrees limit after Vmod.
What's about memory timings? Could someone give a description of them? I don't want to change them without understanding. I found several sets of timings, and they allowed me to increase frequency, but perfomance right the same, maybe because the timings are too low.
I tried:
3-16-11-6-0-0-4-0-0-1-0-5-6 ( HEX: 060B1003; 05010409; 20230206)
instead of my native:
17-19-11-6-0-0-5-0-0-1-0-7-7 (HEX: 060B1311; 07010509; 20230207)
Memory timmings for 6600nonGT cards seems to be the fastest in the Geforce 6 series.DDR3 cards have more relaxed timmings.I tried and other people tried too,but there is no performance increase if use slower timmings and rise the clock a little.
I use in my computer DDR400 at 333MHz but with timmings 2-2-2-6 and they give better performance this way.
You can find a lot of bioses at mvktech forum and can make an ideea what memory timmings have the cards in the Geforce 6 series.
The memory mod ,as I can see, could be done with a single solder,the other wire from the variable rezistor could be connected directly in the Molex connector.I'm not an expert with such a small soldering,and I'm not an expert in electronics.That's why I'd rather go for a bios voltage mod.And indeed pencil trick is not stable,it fades away after a while.
I need little explanation about the memory volt mod.After installing the variable rezistor,wich will be position for the first start?For maximum 100Kohm?And later decrease easy,easy the value?Could it be decreased while card is running or it needs a reeboot for each setting?
As far as I understand, this resistor is for decreasing total resistance between controller (APW7063) pin and GND, that's why you need to set it to the max position before starting. Low resistance (at minimum position it will give 0 Ohms!) can cause shortening of this pin to ground.
Also he had troubles with >600MHz core speed, because this controller have protection: when total power consumtion of the core achieving preseted limit, card shutting down. Fixed by changing 1.2KOhm resistor to 1.6KOhm one, this resistor connected to the pin#7 of APW7063. It's not shown on the photo, this was made some time later.
You can change voltage "on the fly", but under control. Ask someone to measure resulting Vmem.
About single soldering. Yes, you're right. Any ground contacts are suitable, but be careful! Contact should be stable.
And if you'll find BIOS Vmod, let me know please! =) But, IMHO, it's not possible on this card.
Last edited by Ilya /Martin/; 04-10-2005 at 08:50 PM.
The pin for memory mod is pin14?I have no intention to go with extreme voltage - maybe 1.55V for core and 2.8V for memory(2.9V is maximum,isn't it?).
What epoxy used to glue heatsinks on memory modules?In my place can not find any thermal tape.
Now I'm going out to buy variable rezistor and to ask a friend to do the soldering for me.Keep in touch!
Thermal tape - sux!
Use usual thermal grease on almost all memory chip surface and a liiiitle drop of super glue at the corners. This way you'll fix heatsink properly, and the thermal contact will be excellent. But don't use too much glue, or you'll have difficulties with removing heatsinks.
About voltages - I agree with you completely. I see no reason to extremely overvolt my card, this device it not for records in 3DMark. But I want to overclock it to 6600GT perfomance.
Yes, look at the photo. Good luck to you!The pin for memory mod is pin14?
P.S. Ask your friend to solder measurement wire too. It's very inconveniently to test voltage without additional wire when card is running.
P.P.S. golos2 says, that there is no reason to overvolt more than 1.6V (Vcore), it will not affect frequency.
Last edited by Ilya /Martin/; 04-10-2005 at 10:08 PM.
I think achieving 6600GT performance is posible.When I use pencil trick for GPU I could rise clock up to 610 at 1.61V.But I got green artifacts,due to poor cooling.Ithink even 595Mhz is enogh for core if a clock of 750 could be achieved for memory.This way,the card will outperform a standard GT(not overclocked).
This card is hungry for memory bandwidth and give all kind of hang-ups when using AA in HL2.This is what I want to achieve.
Thanks for help!Didn't find variable rezistor but I keep searching.
I can measure memory voltage very easy in the points indicated in some of the pictures in this thread.Wire for memory volt mod will not be a problem.
I haven´t been hire for a week a noe i can see the mod is copmleted.I look a litte bit closer on that russian mod but it´s right the units have self protection so if your voltage is too high or too low the card wil freez.Could any one me explane the timmings?I will try it today.THX
What you need to know about timmings?I will ask in the forum at mvktech.
Have the timmings anything to do with the mod?
nodak
As i mentioned before, there is no reason to raise Vcore more than 1.6V, and it's good, that protection works with this mod too. And how do you changing timings? I found perfect tool - nTimings - that's for setting timings on the fly.
seaman
We need to find info about these timings. (Datasheet?) I want to study this question and determine, what timings are more suitable for me, maybe we should create together a guide about them.
We need to find info about these timings. (Datasheet?) I want to study this question and determine, what timings are more suitable for me, maybe we should create together a guide about them.[/QUOTE]
I got an answer from Mavke at MKVTech and he told to check at Hynix for datasheet of the memory.I can not see what is written on the memory modules because I have heatsinks sticked on them.But as I see we can find informations in these datasheets.Someone post the code of the memory.
Today a installed AMD coller on GPU and I have 58C max at full load.Good temperature!
I could hardly find a 100Kohms variable rezistor.In this small town where I live is a pain to find something sometimes.
I am ready for the memory voltmod.Any of you did it allready?I want to hear some news!
I need those timmings for testing.I will find out my max. frekv. without V-mod for memory.
give me the code on the memory and I'll look for datasheet.
I did the memory mod.I am now at 2.69V.Didn't have time to test yet.Slider of the variable rezistor is moved about 75-80%.
I'll keep you informed.
Big disapointment,my friends !
I tested with 3DMark 2005 at 2.74-2.8-2.84V.I can not do more de 700Mhz artifact free.Card will run even at 750Mhz but full of artifacts and will throttle.
Lowering the frequency,throttling stops but there are still artifacts.
nVidia driver does not accept more than 675Mhz even at 2.84V.
It lools that my memory heatsinks sux.They are sticked with double sided adhezive tape(from factory) wich seems to stop heat transfer not to improve it.
I'm so sad! I hoped that I can do 750Mhz but now I'm not sure anymore even with better coooling.
Tomorrow I will try to do something to improve cooling.
Hope you will do better than me!
gpu and memory mod for Sparkle and Pny is on the APW7063 IC,
as mentioned, cough, 2 weeks ago here
http://www.xtremesystems.org/forums/...345#post789345
picture of IC here
http://www.aocb77.dsl.pipex.com/6600mod.jpg
code sheet here
http://www.anpec.com.tw/products/do...f/APW7063a4.pdf
Result of mod here
http://service.futuremark.com/compare?2k3=3888218
685 core but only 714Mhz memory, so memory was poor like Seaman's.
Regards
Andy
Here iYou can find the datasheet for the memory on our cards:
http://www.hynix.com/datasheet/eng/dram/details/dram_04_HY5DU281622ET.jsp[/URL]
I very much doubt that something can be improved changing the timings.
I can not go more than 700 artifact free.I will try to make some heatsinks out of some old cooler,but now I don't think I can reach even 715 without artifacts.I don't know how others reached 800 but I think is a lie.
Memory is rated 550Mhz at a voltage of 2.5V +/- 5% - wich is a max of 2.75V.
Maybe others are lucky with their memory chips but 800 and even 750 is way to much
I do not think temps are the problem, I think it maye be that hynix just doesn't grade the chips as they are so cheap, in the past they may have graded them to 3.3ns but now they probably do not get enough profit to actually be bothered doing this so they stick out chips and some people are lucky and hit 750/ 800 with volt mod?! The vast majority, like me and you are not lucky though !Originally Posted by seaman
Here iYou can find the datasheet for the memory on our cards:
http://www.hynix.com/datasheet/eng/dram/details/dram_04_HY5DU281622ET.jsp[/URL]
I very much doubt that something can be improved changing the timings.
I can not go more than 700 artifact free.I will try to make some heatsinks out of some old cooler,but now I don't think I can reach even 715 without artifacts.I don't know how others reached 800 but I think is a lie.
Memory is rated 550Mhz at a voltage of 2.5V +/- 5% - wich is a max of 2.75V.
Maybe others are lucky with their memory chips but 800 and even 750 is way to much
Which is a shame as these cards are very bandwidth starved.
What we need is some nice FBA 2.8ns memory on there .. if it is good enough for the FX range it should be good enough for the 6600 range heh heh. Bloody TSOP
Regards
Andy
seaman
Did you use nTimings utility? I think, part of theese timings affects mostly internal setting, not only memory or mem controller. That's why it'll be useful to know more about each parameter. Stock presets of cards are very different from each other. Seems to me, timings is powerful tool for overclocking.I very much doubt that something can be improved changing the timings.
golos2 increased timings for achieve >750MHz mem freq _with_ Vmod.
I tried the same set and got 750-760MHz without VMod, but perfomance stayed at the same level. It's true and I can send you screenshots.
As for me, I have chosen my 6600 of 5 ones. 4 of them perfectly runs at 540/640, and one - not more than 505-510/630.
Last edited by Ilya /Martin/; 04-14-2005 at 12:03 AM.
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