and X1900XT VS. X1900XTX + OVERCLOCK VOLTAGE GUIDES

My Sapphire XTX gets the following.

725/873 with volts at 1.475/2.150/2.102/1.486, this is on stock cooler.

3DMark:

01: 42,339
http://service.futuremark.com/compare?2k1=8915278

03: 22,241
http://service.futuremark.com/compare?2k3=4657952

05: 13,872 (14k may be possible here)
http://service.futuremark.com/compare?3dm05=1852650

06: 6,203
http://service.futuremark.com/compare?3dm06=165215

System:
Opteron 146 @ 3.4Ghz
1GB Mushkin Redline @ 243Mhz 2-2-2-5
X1900XT-X @ 725/873
DFI Ultra-D (unmodded)
OCZ 600W Powerstream
6.2 Cats

It's going under water soon. Just need a new mount for my Silverprop.

Does anyone know whats safe max voltage for the vddci? My card clocks mem really bad and only gets up to 770 with 1.503 vddci and ~800 with vddci ~1.575 (just tested it quickly last night and am unsure of settings but i think thats what i had it at). Is it worth upping the vddci volts or is that unsafe?

is 1.55v+ safe for core voltage under an MCW55? What about max Vreg volts or ram volts with ramsinks on them and good airflow?

okay, updated with the first overclocking database now that we have a small group of contributors. PLEASE, continue to add. Every week or so I will update the database.

Hmm i overclocked with ATITool and it was so weird... sometimes it benched on 760 and sometimes it hanged when first screen in 3dmark game up :S
Though at DEFAULT videocard clocks I was able to get 12,575p in 3DMark2005.

http://www.zone.ee/wrc2006/1/X1900XTX_default.JPG

My Powercolor X1900XT has problem with mems. I can't use even default XTX clocks (775). Nothing helps - raising/lowering voltages, changing drivers etc. If I set ie. 760, 3DMarks 03/05 runs great, but raising clock to ~770 makes artifacts and freez. IT"S IMPOSSIBLE that this mem runs so bad :mad: I'm using Ati Tool 025 beta14. Any ideas?

I had an X1800XL with an AquagratiX 1800 (for water cooling) on it, if i change it with an X1900XT will I be able to mount it either? are they identical?

Quote:

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Originally Posted by Hanu

My Powercolor X1900XT has problem with mems. I can't use even default XTX clocks (775). Nothing helps - raising/lowering voltages, changing drivers etc. If I set ie. 760, 3DMarks 03/05 runs great, but raising clock to ~770 makes artifacts and freez. IT"S IMPOSSIBLE that this mem runs so bad :mad: I'm using Ati Tool 025 beta14. Any ideas?

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you probably dont have the xtx ram. remove your stock cooler and check. i've seen two others who's xt's did not make it to xtx speed cuz of the ram, but the core was fine.

I dont think its the ram, i have bj11 on mine and it strugglest to clock to 775. Like i said before, upping the vddci increases max mem clocks on my card. Thats why i think the vddci is related to the memory controller and its a weak memory controller thats keeping the ram clocks low.

Hmmm, I'll try incrase vddci. But I think, that can't help...
I have another idea. That's very high VDDCI temps - ca.56C at 2D and ca.70C at 3D. Is that normal?

Without a fan, that temp is normal.

You can always do this:
http://i3.photobucket.com/albums/y55...Z/DSC00476.jpg

Its an AMD 70mm boxed fan ;)

http://i3.photobucket.com/albums/y55...2mbram-osv.jpg

Does anybody know whether there are Crossfire Mastercards with 1.1ns memory?

Most XT Cards at the moment seem to have 1.1ns, but the Mastercard has 1.2ns mostly.

thanks to all this tread has helped a ton,
it was the volts for me and running ATITool carefully by setting back to 2d settings on atitool menu the benching. sweetness
again thank you all very much.:toast:
sig update needed

Hi all, I'm new on here so just want to say hello first!

I've just got an x1900xt and have been playing around with it. Using CCC I can OC to the max settings no problem. Using ATI Tool when I set the voltage to anything higher (Such as 1.3v) I can then get even higher clocks but I get a strange pulsing sound coming from the card when I scan for artifacts. It runs completely stable, no artifacts and the pulsing only occurs when using the ATI Tool scan function, not during games or 3DMark.

Has anyone else come across this? It's a sapphire card so a good make.

Cheers, G

Sapphire X1900 XTX
Stock Cooler
VGPU 1.550V
MVDDC 2.236V
MVDDQ 2.160V
VDDCI 1.500V

751.50 GPU MEM 918 Through 3DMark 01 & i'm not maxed yet, the memory will run 932 with a bit more voltage with slight artifacting!!!

Nice. What cooling?

i think sumthing aint right with my card,
with the VGPU set at 1.575 i can only hit 730 max[anything higher will cause a dark black screen in 3d mark 05 and then a sudden black screen]
and my MVDDC 2.150V,MVDDQ 2.150V will allow me 840
VDDCI is at 1.500V

anyone can help me out?

btw, its a sapphire 1900XTX

Quote:

---

Originally Posted by LivingL@rGe81

Sapphire X1900 XTX
Stock Cooler
VGPU 1.550V
MVDDC 2.236V
MVDDQ 2.160V
VDDCI 1.500V

751.50 GPU MEM 918 Through 3DMark 01 & i'm not maxed yet, the memory will run 932 with a bit more voltage with slight artifacting!!!

---

Quote:

---

Originally Posted by LenniZ

Nice. What cooling?

---

:stick:

Quote:

---

Originally Posted by LenniZ

Nice. What cooling?

---

Just the stock coller mate, which I think is very nice!!! I wanna try some water action to see if I can hit 800 core on a stock card!!!

I finaly broke 46K last night, but I ran CL about 50 times & never got a good run:mad:

Thats a sick clock. Beats my XT on water and ocz bga ramsinks :P

i dunno whats the deal with me running 3d mark.
everytime i reach the end of the GT2 in 05', i freeze.
i ran 3d mark 05 4 times and it seems to freeze all the time.
i dun noe whether its my card or sumthing

btw, i ran my card at 730/855
1.55/2.168/2.168/1.514
[kinda high rite?]

yep, seems high alright. u may want to go easy on the vgpu and lower mem clocks a bit :)

Played around with voltages a little more and got a bump to 749/864. Temps are 30*/40* on a seperate loop with an mcr220 and about 60*F ambient.
http://webpages.charter.net/aari/11905.jpg

and a picture of my "testbed"

http://webpages.charter.net/aari/mess.jpg

ready to do some heavy air
http://i3.photobucket.com/albums/y90...r/DSC07247.jpg
next week or so im gone start with the thing bang it up to wc than phase with mod , gfx didt full stock cooling and vgpu 729/890 . hope she will fly , test on cold bug has been done -12°C with ccc stil on ;)
scores so far , need new psu
http://service.futuremark.com/compare?3dm06=120944
http://service.futuremark.com/compare?3dm05=1799477
http://service.futuremark.com/compare?2k1=8909393

Now that im thinking about it.. does 2.315 seem too high for MVDDC ? they dont seem to get too hot.