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
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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
What model did you get and where did you get it from?
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
http://img406.imageshack.us/img406/4...k062po4.th.jpg
managed to get a complete 3dmark 06 bench on 891 core but
was not stable when it came to gaming
http://img514.imageshack.us/img514/1...rk06tq0.th.png
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
i got the extreme-pc xxx edition, made directly at the ati fab. it's the roxxors
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.:cool:
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 :)
volt modded bios do not work.
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)
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? :confused:
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. :up:
I have compiled a new thread based on the Sapphire 3870 version.
http://www.sapphiretech.com/en/forum...916#post102916
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! :D
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:up:
this is mine,brand sapphire,memory clock really boost alot of pts:D
aq3
http://img413.imageshack.us/img413/5289/aq33tv1.th.jpg
3d01 is about 63k iirc,sorry..forgot to take screenie
3d03
http://img524.imageshack.us/img524/9...5143cn4.th.jpg
3d05
http://img442.imageshack.us/img442/1...5223vc0.th.jpg
3d06
http://img210.imageshack.us/img210/6...3842jf3.th.jpg
cooled with accelero s1 + 2 panaflo
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)
ffs.. listen to K404.. stop posting your max clocks and lets focus on getting the BIOS volt mod up and running. :)
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.
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.