3870 @ 1200MHz Core w just Dry Ice

Finally got some 3870 to play with :D
So far testing with Dry Ice, too lazy to cut the blocks down smaller, the temperature is just around -39C once it gets to benching.

http://img156.imageshack.us/img156/6012/3870dicexd5.jpg


-39C is actually enough for 1200MHz Core!! With just a low 4.25GHz CPU, 16.4K 3D Mark 06!!

http://img409.imageshack.us/img409/7038/92431866iq9.jpg

With 1.75v @ 1200MHz
However, the card doesn't even break 1100MHz core until the Over Current Protection is removed! Here's how ;)

How much does this equate to a 2900XT? 1100MHz core?

Over Current Protection link missing.

Wow, very impressive!!

Those are sickening clocks, really makes one wonder what might happen with more cooling. Once again you have demonstrated your superior voltmodding ability :clap:

Thanks Sham

Really good and those vmods is impressive.

Keep pushing it.

very well done sham! :toast:
cant wait to get my 3870s... but the prices here still suck, there is almost no supply to europe in seems :(

omg just saw the card... damn is it really necessary to move all those caps around or did you have to do that to find and kill the ovp? :D

:eek: 1.2GHz! core on 1.75V, very impressive with clock speed and vmods

congratz :toast:

Nice clocks Peter! The card looke like a typical "modded by Shamino" piece of hardware :D

oi! 175v? didnt see that... thats quite high isnt it?
how were the temps?

omg nice clock

i knew that 1200mhz (for core) would be totally possible with ati3870 cards.. very impressive mate :toast:

Crazy mods Peter!

And I thought 1.65vgpu was alot for 2900 :eek:

Much bigger inductors....

http://img143.imageshack.us/img143/4848/12774867bw1.jpg

These cores are really the rejects, they require lots of volts to run the same mhz as 2900. Good thing these cards are easier to tame than 2900, the main heat is from core clocks, raising voltage by +0.1v creates only the same amount of heat as raising ~20MHz of the core.

Quote:

---

Originally Posted by Solarfall

i knew that 1200mhz (for core) would be totally possible with ati3570 cards.. very impressive mate :toast:

---

wow ATI brand new or new Nokia model ?:ROTF: calm mate... calm :D

btw. i mean to joke not mean to other :p:

Impressive with the new inductors and good info ;).

Keep pushing it.

@LardArse:Could you make thread what did you actually do on your card? For that HARD vmoding :)

Impressive core clocks Peter. 1200MHz @ -39c. Those mods are quite sick too :D

Now I would like to see how is HD2900XT doing ~1000-1100MHz with same CPU speed. The I can decide :up:

This is closest I can found: http://www.hwbot.org/result.do?resultId=627923

very nice results and nice modding !
How high can you set vgpu till overvolt protect kicks in?

Quote:

---

Originally Posted by ZoLKoRn

wow ATI brand new or new Nokia model ?:ROTF: calm mate... calm :D

btw. i mean to joke not mean to other :p:

---

hahah what a funny typo on my part..:ROTF: :rofl: damn where did i put my glasses :D

nice score there sham !! Congrats

Sham... totally killing it!!
Tho nothing less is expected from you :)
and yeah... Wicked MODS!!!

Amazing work.
Must get 3870, MUST GET. MUST GET.......

Wicked ... bet u guys can squeeze some more mhz out of it

:shocked: This is freakin' sick dude :D

Damn impressive mods there :clap:

very nice! What vgpu does overcurrent protection kick in, 1.6v? Also what brand/size caps did you use to replace? Can't load the pics here :\

huah add 0,25 and gain 200Mhz :D

how about 2v :rehab:

Quote:

---

Originally Posted by quake6

@LardArse:Could you make thread what did you actually do on your card? For that HARD vmoding :)

---

I think you should just try the OCP mod and see hwo it goes first, maybe the mnods are not necessary

Quote:

---

Originally Posted by EmineM

very nice results and nice modding !
How high can you set vgpu till overvolt protect kicks in?

---

theres no over volt, just OCP

Quote:

---

Originally Posted by Miwo

very nice! What vgpu does overcurrent protection kick in, 1.6v? Also what brand/size caps did you use to replace? Can't load the pics here :\

---

I simply added I didn't replace any

06 GT2 is just killer for the card, I can pass GT1 @ 1200mhz core with just -20+C but GT2 needs -30+c to pass

Knowledge is everything , keep the hard work well done

a question : why dint i see never a vapochill on a gpu ?

I have my Runny/Gosmeyer Cryostar evaps with me, just no compressor or refrigerant :D

Quote:

---

Originally Posted by LardArse

Much bigger inductors....

http://img143.imageshack.us/img143/4848/12774867bw1.jpg

These cores are really the rejects, they require lots of volts to run the same mhz as 2900. Good thing these cards are easier to tame than 2900, the main heat is from core clocks, raising voltage by +0.1v creates only the same amount of heat as raising ~20MHz of the core.

---

Very Very Cool V mod and Score Mr. Shamino :up: :up:

Don't all ATI cards have an OCP chip, which can be removed?

omFg.. thats freakin awesome :eek: :shocked: :shocked: .

Look at the mods, the caps are all over the place :p: :clap:

Shamino, the link in your first post does not work :(

Sick clockin' Sham. :clap:

can you mod a second and put it in crossfire? hehe, awesome mod!

amazing work.... 1200mhz is sweet.... these cards are so much fun to play with...

Good Job shaminó, 1,2GHz is very impressive!:clap:

normal clock.

Very impressive! :D

Love the mods, nice!

Impressive clocks!

Very nice Peter!

I would estmate that your 3870 clocks is pretty equal to a 2900XT running 1160-1180MHz core with 950-980MHz frame buffer, it might even be just as fast. That GDDR4 speed offers alot of bandwidth wich should be enough to compensate for the 256-bit interface. In my testing on air cooling if you max 3870 and 2900 frame buffer freq with gpu set at 800MHz the perf is pretty equal in 06.

Quote:

---

Originally Posted by Kinc

Very nice Peter!

I would estmate that your 3870 clocks is pretty equal to a 2900XT running 1160-1180MHz core with 950-980MHz frame buffer, it might even be just as fast. That GDDR4 speed offers alot of bandwidth wich should be enough to compensate for the 256-bit interface. In my testing on air cooling if you max 3870 and 2900 frame buffer freq with gpu set at 800MHz the perf is pretty equal in 06.

---

Thanks!! Knowing you as the guy who benches the 2900s the most heheh I would believe your estimation! Alright, so that's pretty sweet, at least a whole lot easier to cool than 2900 and doesn't lose much!

woot. saw this from VRZ

well done!

woah very nice stuff Peter... i'd have to say if Hipro and you got together again, manufacturers won't be able to recognise their products with all the extreme mods and component replacements :D

just dry ice? :ROTF:

nice clocks

Quote:

---

Originally Posted by LardArse

Much bigger inductors....

http://img143.imageshack.us/img143/4848/12774867bw1.jpg

These cores are really the rejects, they require lots of volts to run the same mhz as 2900. Good thing these cards are easier to tame than 2900, the main heat is from core clocks, raising voltage by +0.1v creates only the same amount of heat as raising ~20MHz of the core.

---

doesnt that void your warranty?:ROTF:

wow, nice results bro. :toast:
that ocp mod ist really awsome. :D

Heh, heh, heh.......This VGA looks.......agly...... :D :p:

Nice going my friend...... ;)

Hello, I would like to know or to find the vmod ddr4 on the HD3870. Thank you

:eek:1.75 vgpu..any vdroop on that 3870 sham?

think u can brake the 06 record with 2 of those in xfire? use the tech9s that k1ngpin made, they look slick and cool better (from what ive heard)

Quote:

---

Originally Posted by the-strokes

:eek:1.75 vgpu..any vdroop on that 3870 sham?

---

no man no vdroop on my modded cards

they still will only go a bit above 1200mhz on good cooling, 124+ is difficult to pass.

Dear Peter,find the better two cards,and get 1300+:D

Hmmm...unrelated to this thread directly, but I guess that Lardarse = Shamino?

yes, lol :D

That look exotic :smoke:

What exactly help it with more capacitors ?
Where does the OCP start being a problem ?
What would you recommend to be the max vcore for 24/7 if I want to keep it for 1 year minimum ? (finally I have found out I need to save for driving license and a car :P)

Going to run them on High-end Watercooling.

thanks

Edit: One more thing. Did you remove the component on the other side off the PCB on the spot marked in the pic ?
http://img120.imageshack.us/img120/3...9076ao2dz6.jpg

norway i think its better to have an overkill and have no need to find out where all the pwm limit is to begin with, thats what i always try to do

its an emtpy pad not removed. I'm setting up a water rig with the cards myself and plan to do the ocp and vmods and just add a cap or two only.

what hapen if the OCP resistors does not remove ?

The in the shop said it was to littl info on the cap. so i need the farad value on the red and blue ones ;)
Also any else info if there is any :D

Thanks :up:

I have done the OCP mod and vmod, but i still need to know the value on the capacitors. If I just add a random farad value capacitor wouldn't that do it very unstable ?

haha i just love the look of that card :D hardcore =)

nice clocks & mods. OCP mod link doesnt work though

It work fine for me

Where can i find the OCP mod?

EDIT found it

The blue ones are 180uF 16v dc

I have a question about the ocp mod u say u have to take 2x300k ohm but i cant get hold on any 300k ohm smd resistors only 330k ohm is that ok?

You got 300K ohm on Elfa just search for 60-453-71 .......

Thanks man great shop

I cant buy there i have to have a company damn

Is there anyone here ready to do the OCP mod on my 2 cards ? I haven't the necessary competences and tools to do it here and can't find anyone to do it for me in france :(

If there's someone interested send me an MP ;)

Thanks,
Bye
p€p|n0r@ng

I can do it but i live in Denmark!

Quote:

---

Originally Posted by Riska

I can do it but i live in Denmark!

---

You have a MP :)

Bye
p€p|n0r@ng

Quote:

---

Originally Posted by Riska

I have a question about the ocp mod u say u have to take 2x300k ohm but i cant get hold on any 300k ohm smd resistors only 330k ohm is that ok?

---

sorry for the thread revival.

BUT i was wondering the same thing. all i can find are 330k ohm. and i do not want to run a few 100k in parallel if i dont have to. so are the 330k ers going to do me well?:p: :cool:

It works fine with 330kohm i have done it with that

Quote:

---

Originally Posted by Riska

It works fine with 330kohm i have done it with that

---

thank you very much! respect!!! and now for more then 1026mhz core on my 3850... YAHOOOOO :p: :D :cool: :rolleyes: :rofl:

very nice!:up:

do you know if it is 1026Mhz on 3870 too ?

Quote:

---

Originally Posted by Norway

do you know if it is 1026Mhz on 3870 too ?

---

do you mean as a mhz wall?



also on a side note. i have done the ocp mod on my 3850 works great. but now i cant even get a 1026mhz run. cause my mosfets are getting ragging hot even with copper sinks super glued to them AND a 120mm fan. i cant even touch the sink for more then a second when im benching. there are contact points for some more caps that the 3870s have and the 3850s don't. so i might just have to add the caps on the contacts tonight and see.. but any info on helping those mosfets i would LOVE YOU! :D :up: :yepp:

Quote:

---

Originally Posted by anubis

doesnt that void your warranty?:ROTF:

---

I think wont cover if sender is "Peter Tan" :rofl:

Just ridicules these cards can only do 1200mhz with so many mods. I've seen 2900xt's dry ice cooled @ 1200mhz core. I expected more from these cards, especially because there 55nm instead of 80nm.

double strapping the mosfets might get some more (basically take identical mosfets and attach them in parallel).

lol 16k!!

1200MHz@DICE:D
Look at mine 3870@aircooling;)
1147MHz@1,76V
http://ceemic.pri.ee/45nm/81153.jpg
http://service.futuremark.com/compare?2k1=9343847

Volcano12 + "window_open_mod" + -1C outside temp:D

Card+Vmod: http://ceemic.pri.ee/hardware/hd3870/

So, no ocp needed, when going over 1100MHz?:rolleyes:

Quote:

---

Originally Posted by ceemic

Volcano12 + "window_open_mod" + -1C outside temp:D

---

crap, your GDDR3 card scores and oc-s like hell.


Copy-paste from another forum:
Intel C2D E8400@4722MHz
2x1GB@524MHz
HD3870@1134/1134 Vgpu=1,79V Aircooled :lol:
PCIe=150MHz :lol:
53080p
http://service.futuremark.com/compare?2k3=5755095

And 3D Mark 2006: http://ceemic.pri.ee/45nm/15384.jpg

Open window mod: http://ceemic.pri.ee/hardware/bench/ :lol:

Respect:up:

That Volcano 12 reminds me of PlatoonSgtElias 7800GTX :)

Those were Ceemic´s runs..
My HD3870 GDDR3 is at Jaan´s place for vmods:D

Kasparz, tnx "neighbour". Estonia rules on aircooling:D

Very nice results ceemic:slobber:, but i will be back in game soon :) :D

-4C ambient power: http://ceemic.pri.ee/45nm/81408.jpg HD3870@1174/1161 Vgpu=1,84V :rofl:

http://ceemic.pri.ee/45nm/28327.jpg
http://ceemic.pri.ee/45nm/53640.jpg

:up:

My Sapphire HD3870 is also fully modded and with highend water and 2.03v on gpu it brooke 2 records..

http://www.hwbot.org/result.do?resultId=731706

http://www.hwbot.org/result.do?resultId=731802

Look at the Core and mem speed 1250+mhz core and 1460+mhz mem

Here is some pics of the mods.

Hectic stuff!

That is extreme :up:

2V and 1263MHz on water?!?!? WTF?

Now that is.. extreme :up:

I can get it to 1288mhz but 3d stable and 1504mhz on mem but not 3d stable