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I did not find any information of the OCP for 5850, controller is the same as in 5870, but SMD elements around a little bit differently located.Quote:
Originally Posted by BenchZowner
What do you think, if you do both at 5870, will it work?:confused:
I wouldn't even think of trying that.
Too much risk involved, and the chances are very slim.
This is very bad, will have to abstain from this modification. What And what about the CAP-MOD? Should it be done?
In most cases it doesn't really help.
Riska and me where testen my 5870 asus Voltage tweak, it runs 1340 mhz at core on ln2 only by soft mod, then Riska makes a nice hard mod, and the card rock above 1400 mhz core :up:
http://i1014.photobucket.com/albums/.../am3385000.jpg
Nice work there lads.Quote:
Originally Posted by Rosty
Give Riska my best regards ;)
1400/1310MHz on a reference card :eek: Good! :toast:
We also did 1420 on that card and i think it has more in it with a better pot and some more volt only 1.545v to acheive 1420mhz
What about the 5870 lightning???
Any hard mod yet???
The 1,35 volts from msi afterburner didn't awake the monster..
Only 1036/1230 stable!!
there are more complicated mods for the lightning..[VID and vDDCI] and as far as I know they have not been made available to the public yet...AFE should work nicely for you for +1.35v ..no?
It does, I sorted him out ;)
My freind can you sort me out to i have a team mate ho has the card also and it sucks he says even with ln2
Hopefully it's not one of those that really suck, because some pieces suck for real.
Quote:
Originally Posted by monteboy
Why such large capacitance? You would see better results from some good film capacitors of lower uf value.
The crazy long leads would probably negate any of their advantage.
Solid caps and Ceramic type caps are great for voltage... but suck hard for filtering ESR. They tend to 'pass on' the noise rather than filter it out. Electrolytic caps are best for these applications. And while the longer leads are there..they dont hurt. I have done temp mods like this before, and once reworked to a perm. solution and shorter leads... I got no gains or improvements... If it is doing something negative, its not on a large enough scale to hurt at all.
can anyone comment on the validity of the pencil mod for non reference 5850's that are not able to be controlled via software? If there is anyone with any experience of doing one then please share :)↲↲Cheers
This is a pic of the VR and surrounding area from my card which is a Sapphire non ref, rev 2 5850.
Is there a pencil or hard mod for this config? Software control is obviously not possible with this VR.
Thanks!
http://i8.photobucket.com/albums/a49...r/IMG_0734.jpg
You can hardmod ... FB pin for mod is 6th pin from the left..on the bottom of the IC as shown in the pic. Trace the pin to one of the resistors in the bottom row, using continuity on your volt meter..then measure the resistance value from the resistor to ground. Here is the datasheet for reference. http://pdf1.alldatasheet.com/datashe.../NCP5395T.html
may i ask what mods were done ?Quote:
Originally Posted by Rosty
just got a asus 5870 back as an rma
is crap on air but @ -80 it pulls 1330/1285 with 1.48v no hard mods
im look to go futher with the core :)
sorry its a hwbot image only one got that shows the clocks :(
http://i556.photobucket.com/albums/s...108539copy.jpg
also what is the UPI controller for and the 5870's ?
Bill, i need sorting for 5870 Lightning.
Don't pull any punches, i need the lot ;)
everyone should have this....:yepp:
vMEM
http://i265.photobucket.com/albums/i...tning_vMEM.jpg
VID
http://i265.photobucket.com/albums/i...htning_VID.jpg
vDDCI
http://i265.photobucket.com/albums/i...ning_vDDCI.jpg
OCP per phase
http://i265.photobucket.com/albums/i...g_phaseOCP.jpg
overall OCP
http://i265.photobucket.com/albums/i...htning_OCP.jpg
direct feed GPUv
http://i265.photobucket.com/albums/i...PUv_direct.jpg
:eek::eek: ;)
you hacked msi datacenter?
amazing!!!
f(l)uck :eek:
shhh.. you guys gonna get me in real trouble.. :p
Those are the mods, though, and they are all confirmed needless to say. Have at them, and post your results!! These GPU's have been out for a while now! Good luck and good modding. :D
vMEM, what is the result of changing to 1.1k? not variable?
Difference between phase OCP and overall?
vGPU only VID moddable?
1. changing the resistor should bring increased vMEM to max safe limit.. manufacturer did not realize gains past new voltage limit- so my guess is its not going to benefit.. VR should do just fine though.
2. OCP overall- as stated..overall GPUv OCP control/disable... OCP phase = OCP limit per phase - must for high vcore
3. vGPU is only VID, by default.. can still bump with software though, it just sets new default per VID mod.
hope that helps.
*vDDCI mod is must too... folks not seeing gains beyond ~1.25v though. I have not been able to monitor vDDCI for droop under load yet, but suspect capping might boost FPS in the same fashion PLL mod/cap works for 470/480
Special AB?
ok, I ve maded the OCP in my reference 5850 and it's the same for the 5870, but it's in the back of the card.
It also gave me an 0,03v increment. But I got no better OC results, no matter what I can't pass 980mhz :(
Probably I need VDDCi? My temps don't go over 65C gpu even when at 1.35v and vrm tems are cooler then 80C running furmark...
my card sux... anyway lets unless share it.
http://i45.tinypic.com/v8pkj4.jpg
http://i50.tinypic.com/4llmav.jpg
Just want to check, are you measuring with vdimm to ensure your set voltages are working?
vdimm? I think u mean dmm? (digital multimeter) I checked and it works, but no gains can be attained after 1.32v, but temperatures are low and under control, thas why I don't now why.Quote:
Originally Posted by T_M
yeah sorry slip of the tongue
Last night i tested AB 1.41 Extreme but no luck being able to change volts.
Pretty convinced 1.6 Extreme is required. Anyone got it?
i have 1.5xb as well if the 1.6b doesnt work..should though
Try this one 1.6xQuote:
Originally Posted by T_M
http://www.speedyshare.com/files/229...60x-Beta-6.exe
Thanks boys, havent tested yet but im sure thats what im looking for. :D
the 1.60x-beta6 is not an extreme version :( voltage max still 1.35V and clocks have max too.
Try one that I sent you
Hmm strange, with 5850 referent design I have up to 1.55v for gpu, also the same with 1.51X AB. Maybe Your vga bios is problem ?Quote:
Originally Posted by T_M
Try in this and this way, it works on my CF Sapphire 5850:Quote:
Originally Posted by T_M
http://img341.imageshack.us/img341/9...ge31562.th.jpg
did you go to settings and unlock the voltage limit? its an option you have to enableQuote:
Originally Posted by T_M
Yes i did that.
Anyhow, 1.51x (which was optimised for 5870) gives what i need.
I believe 1.60x was optimised for 480.
My lightning is now easily flying at 1340/1275 with only vgpu mod (thanks Hipro!) and can bench as low as -170C without problem (didnt test any lower).
i thouhgt the lightning's were goodQuote:
Originally Posted by T_M
but it seams my ref card is also good 1350/1310 no cb problems with ram or core had had filled the pot to the top and -186 was the coldest my meter would read
http://i556.photobucket.com/albums/s...4072010767.jpg
nice t_m
i also managed a bit more with my ref card
1411mhz
http://i556.photobucket.com/albums/s...80x-109696.jpg
the only problem was after 3hours the mem cold buged and would not pass 1200 i need to find a way to stop the ram bugging:shrug:
:wasntme: ..can keep the CB away..shhh :p
oooooh, do share
very tight card you got prepped there man.
Beg up
i did...but here it is again in less obvious formQuote:
Originally Posted by T_M
http://www.reptilebasics.com/flexwatt-heat-tape/
I havent got a chance to use it yet..but its got ftw written all over it. [low power TEC should work good too]
I have a Sapphire 5830 that I hardmodded (vGPU only) but the core runs out of steam unusually quickly and more voltage doesn't help.
My fear is that it's simply hitting a wall and there's nothing I can do about it, but I want to explore the other possibilities (e.g. OCP, VR cooling etc.) Here's the details:
On stock voltage (~1.15V) and cooling, the core can do 1030Mhz.
vGPU mod (~1.25V) and watercooling (core only, 38'C full load), it rapidly hits a wall at around 1150Mhz (i.e. system locks up / screen goes blank).
I've taken the voltage to 1.35V with no improvement.
Having checked the 58xx overclocking thread, it does seem that most 5850s and 5870s also crap out at about 1100Mhz until using very high voltages and extreme (sub-ambient) cooling, reinforcing my feeling that this is a chip limitation as opposed to cooling / OCP issue.
Any thoughts?
In addition, has anyone found any improvement from vMem mod and/or memory cooling? (I can't find any info on this yet - still looking).
Thanks.
George has done that type of thing before successfully
@Jimbo - try holding a block of dry ice against your radiator, this should be capable of bringing your core temps down to 10C or so pretty easily to check what the roadblock is
heres what i had in mind
an old vapo chill heater fitted bettwen the pot and the card
http://i556.photobucket.com/albums/s...6072010821.jpg
*sounds like voltage stability..Quote:
Originally Posted by Jimbo Mahoney
Use GPU-Z to monitor vDDCI and OCP% when running a graphics stress test like furmark.. chances are with such a fast core speed, you are max on input capacitance and causing voltage to drop too low on load. I noticed the same thing on my 5770, and had to add 16v caps to keep the input from dipping below 11.9v on load. Now I can run 1105mhz stable for daily gaming and bench at 1120mhz. ;)
@ EvoCarlos- vapo chill heater..nice..and yeah, almost the same thing.
do you think it will work ?Quote:
Originally Posted by CL3P20
http://i556.photobucket.com/albums/s...6072010822.jpg
it gets walm to the touch at 3v and its rated @ 5w 12v
oh dear!!
i did not even get past the 1st post screen :(
http://i556.photobucket.com/albums/s...6072010825.jpg
any option to work around this problem ?
ouch:(
Thanks for the suggestion.Quote:
Originally Posted by CL3P20
GPU-Z reports rock-solid VDDC (1.165 V) and OCP (0.0 %) both before and during MSI Kombustor in DX11 mode using "Unlock Power Draw" mode.
Other things I've tried are finding any hot components on the board after reading about the other 58xx series getting very hot fets and VRs (apologies if I'm using the incorrect terminology - I'm a novice @ electronics). However, not a single chip on the board is hot to the touch apart from the memory chips. The whole thing runs very cool and I'm only pointing a couple of 5v 120mm fans at it.
Unless anyone has any other ideas, I'm ready to admit defeat on the core (sadly). I'm going to get a mechanical guy at work to chop me up some sinks for the memory and see if that improves the headroom on those, as they do get pretty hot (too hot to hold a finger on). I've not had terribly good experiences in the past with heatsinks on graphics card memory though, so I'm not expecting much.
@ EvoCarlos- ouch!! Too much voltage or what? Accidental short to ground?
it went in to windows then when it was done loading it give me green and white stirpes then it restarted and got stuck at 2b on the post code displayQuote:
Originally Posted by CL3P20
i had checked all the voltages
vgpu = 1.15v
vmem1 = 1.62v
vmem2 = 1.62v
12v+ = 12.03v
and the 2nd voltera chip was 1.25v
not sure what happend it was all coverd in putty and at 25c
im sure rma will fix it :)
Actually, I think it could be voltage stability.Quote:
Originally Posted by Jimbo Mahoney
I found the following:
1.25 V = 1126 Mhz before strange behaviour
1.30 V = 1144 Mhz
1.35 V = 1152 Mhz
It's weird to have such tiny improvements from voltage increase and I think the voltage could be unstable, although it's hard to separate actual core voltage fluctuations from variable contact with the pin on the graphics card (I'm just holding a Multimeter probe against it with some difficulty, as opposed to soldering a nicer readout point etc.).
I also bought some clearance heatsinks for the memory and they make *slight* improvements - I can bench at 1300 Mhz instead of 1250 Mhz :up: Wow, an extra 50 Mhz - pretty much what I expected from previous experience :rolleyes:
Is there still no vmem mod (hardmod) for the reference HD5850?
Guys, i'm running my reference Sapphire 5870 on 1080 - 1350 (or 1400) MHz on GPU and Mem, but i set one mhz more on GPU and 3dmark's crashes instantly.
1.35v (set on MSI AB) max temp 37º on WC Swiftech MCW80.
Any suggestion? i was thinking that maybe it's a problem with OCP or OVP because vGPU goes to 1.16v when 3DMark crashes.
thanks in advance.