Unleash the Gladiator (RV670): 862MHz GPU Clock Limit Fixed

[SNiiPE_DoGG]

I just ordered a ATI HD 3870 w/ an 835 core and 2400 (!!!) RAM. i cant wait to set it up, unfortunately space limits me to wait for a new case @ christmas

[HousERaT]

What model did you get and where did you get it from?

[Rumon]

I'v been keeping eye on this thread and have gotten lots of useful info so i
though it'd post my Oc'ed results

This is my Stable Overclock of 12284 3dmark 06


managed to get a complete 3dmark 06 bench on 891 core but
was not stable when it came to gaming


This is with the stock cooler with fan fixed at 70% but i have ordered a Accelero AC-S1 should arrive on Thursday then might try out the higher voltage bios see if i can get a greater OC

[SNiiPE_DoGG]

i got the extreme-pc xxx edition, made directly at the ati fab. it's the roxxors

[slugzkea]

Okay guys, I finally Oc'ed at stable clocks.

3dmark06 FULL TEST passed.

Score: 12051

Clocks: Rivatuner reads 885/1291
GPU-Z reads 877/1287

I used rivatuner to OC, catalyst overdrive is junk. And the autotune doesn't mean anything. Sure it can run those clocks, but not when gaming!

I'm going to try to aim the mem for a bit higher.

Since my mem is rated 1200mhz, usually 100mhz oc is very possible.

Using non volt modded bios.

PCIE Freq. at 104mhz.

be back soon!

Okay. Here it is.

I have discovered that running 3dmark06 once means nothing. Run the test 3 times in a row (it's a setting if u have the full version). That will determine true stability.

At certain higher clocks, It would complete 3dmark06 just fine. But if I set it to repeat x3, it would crash.

So the most stable clocks I have achieved are:

885/1311 <---EDTIED: accidentally put "855" on initial post

GPU-Z reads: 877/1296

3dmark06 Full testsx3 FINAL SCORE: 12198

I'd say, not bad. Not bad considering no voltage mods.

Remember people, those 1.377v and 1.47v bios's don't do anything.

[PhilDoc]

885 will give you 877.5. Just tried it myself with Riva Tuners own hardware monitoring. The core will only increase in 13.5 increments. So 864, 887.5, 891, 904.5. Not sore if this is bios controlled or not. So even if you try 890 you'll still get 877. Hit 900 and you'll get 891, etc. Haven't checked how the memory increments.

[slugzkea]

885 will give you 877.5. Just tried it myself with Riva Tuners own hardware monitoring. The core will only increase in 13.5 increments. So 864, 887.5, 891, 904.5. Not sore if this is bios controlled or not. So even if you try 890 you'll still get 877. Hit 900 and you'll get 891, etc. Haven't checked how the memory increments.

wow...THANK YOU for informing me about this! I was hitting VPU recover all the time until i tried that actual 877core setting via rivatuner.

Has anyone tried those clocks mentioned above (877.5, 891, 904.5) with the new volted bios's?

Because of not, I'm the first to volunteer

[STEvil]

volt modded bios do not work.

[slugzkea]

Okay, What about PCI-E frequency? what mhz should be used with SATA drives, and regular IDE drives?


I've read that ATI cards can't handle higher frequencies like the nvidia cards, is this true?

bump!

*note* I am using a MSI P35 Neo2-FR motherboard (P35 express chipset)

[cstkl1]

i got the extreme-pc xxx edition, made directly at the ati fab. it's the roxxors

??? the 835/2400??
errr but anybody can just go to the IAX tech and flash their cards to the 860/2400.. so errr

[slugzkea]

I agree. I am just as disapointed.

I was hoping for this 55nm tech. to not only OC and be on par with the 8800GT, but to consider it performing better than the 8800GT due to this "new core", which is showing colourless "flying colours".

I'm not giving up hope yet though. This card is very new. and The drivers for it are very new.

I just dunt understand how some people here are reaching above 860 core, and some cant?

It's the same core!! Yes temps matter but mine are so low! 31C idle, under 56 load!

WTF....

I'll wait a bit longer, maybe a month. But if nothing improves, screw you ATI. i'll spend the extra cash to get a REAL gamer's graphics card.

it's too bad ATI's image quality is highly addictive tho...blargh

ALSO:
I read at sapphire forums that the 3870 is built on the same principles as the x1950. from what i remember in the early days of the 1950pro's, the low level OCing for the memory only worked in 27mhz incriments.

Just an idea...

UPDATE:

Using RivaTuner and setting clocks to: 877:1339 is working flawlessly. I'm usin the 27mhz incriments increase on the memory (1126+27+27 etc...).
It's an old property of low level OCing of the 1950pros, so I guess it is based on the same principles..

Anybody else know anything about this?

[STEvil]

Okay, What about PCI-E frequency? what mhz should be used with SATA drives, and regular IDE drives?


I've read that ATI cards can't handle higher frequencies like the nvidia cards, is this true?

bump!

*note* I am using a MSI P35 Neo2-FR motherboard (P35 express chipset)

increasing PCIE used to help some card's cores clock better... ati/nv both were able to do high PCIE frequencies if you look around. Max freq will depend on motherboard PLL's.

[slugzkea]

increasing PCIE used to help some card's cores clock better... ati/nv both were able to do high PCIE frequencies if you look around. Max freq will depend on motherboard PLL's.

Right now I have it at 110mhz, Going to leave it at that for now. I read that going over 125mhz can damage your SATA drives, I tried 125 and got no post, had to press the magic button (Cmos reset)!

UPDATE:

Okay 27mhz increments increase on the mem seems to be the most stable. I'm currently experiemnting with 21mhz increments as well.

I tried 7mhz increments, and that resulted in VPU recover.

I was able to run at 1339 using 27mhz increments but was getting artifacting. So right now my mem is at 1315 with very very little to no artifacting using 21mhz incriments.

Actually, i think the very very little artifacting is caused by the catalyst A.I.

[slugzkea]

I have compiled a new thread based on the Sapphire 3870 version.

http://www.sapphiretech.com/en/forum...916#post102916

[jedimindtriks]

volt modded bios do not work.

arent some of the guys in this thread using vmod bios?

or is there another way i can change the voltage?

[K404]

Guys...stop clocking for 20 minutes please.

We all need/want voltmods for these cards...

Please can someone (ideally someone who also has a DMM) take some high-res fairly close-up pics of the control ICs for the cards and post them up here:

http://www.xtremesystems.org/forums/...d.php?t=166623

The labels on the ICs would also be welcome

Im also surprised very few people are using water.

Come on!!! Grow a set!

[slugzkea]

Right now I have it at 110mhz, Going to leave it at that for now. I read that going over 125mhz can damage your SATA drives, I tried 125 and got no post, had to press the magic button (Cmos reset)!

UPDATE:

Okay 27mhz increments increase on the mem seems to be the most stable. I'm currently experiemnting with 21mhz increments as well.

I tried 7mhz increments, and that resulted in VPU recover.

I was able to run at 1339 using 27mhz increments but was getting artifacting. So right now my mem is at 1315 with very very little to no artifacting using 21mhz incriments.

Actually, i think the very very little artifacting is caused by the catalyst A.I.

UPDATE: Older games like CSS and NFS carbon were running fine for hours at mem 1315 but when I ran COD4, I got VPU Recover. I put the mem back to default to make sure core was stable at 877mhz and it is.

Currently testing mem at 1288 (27x6) on newer games for stability

[slugzkea]

Guys...stop clocking for 20 minutes please.

We all need/want voltmods for these cards...

Please can someone (ideally someone who also has a DMM) take some high-res fairly close-up pics of the control ICs for the cards and post them up here:

http://www.xtremesystems.org/forums/...d.php?t=166623

The labels on the ICs would also be welcome

Im also surprised very few people are using water.

Come on!!! Grow a set!

Water on a 55nm GPU? What for? lol it's like the same properties as the C2D CPU's. Shrink the die, less heat output, less power consumption.

I strongly believe water cooling will become obsolete in the future.

[LowRun]

Water on a 55nm GPU? What for? lol it's like the same properties as the C2D CPU's. Shrink the die, less heat output, less power consumption.

I strongly believe water cooling will become obsolete in the future.

As soon as you add volts watercooling is more than welcome whatever the process is, i can't see it being obsolete in the forseeable future.

[coolice]

this is mine,brand sapphire,memory clock really boost alot of pts
aq3


3d01 is about 63k iirc,sorry..forgot to take screenie

3d03


3d05


3d06


cooled with accelero s1 + 2 panaflo

[Smy]

do guys ccc overdriver to overclock cf settup? use rivetuner for turn up the fanspeed?

my 2 hd3870 is running at stock with q6600@3.7ghz got 18,5 i 3dmark06 her (7.11 cat driver)

[slugzkea]

do guys ccc overdriver to overclock cf settup? use rivetuner for turn up the fanspeed?

my 2 hd3870 is running at stock with q6600@3.7ghz got 18,5 i 3dmark06 her (7.11 cat driver)

you have not done your reading...

[Sage]

ffs.. listen to K404.. stop posting your max clocks and lets focus on getting the BIOS volt mod up and running.

[GAR]

so no volt mod yet??? i am really interested in the volt mod, as i picked up one of these, about to get me a second one for crossfire.

[GAR]

after some testing, my max of this diamond 3870 is 850/1250 and i gotta say, this card is crap compared to my 8800GT, this thing is going back first thing tommorrow morning.