Thanks, that worked. It must be an issue on Deepbit with the long passwords I use cause I haven't had a problem with Phoenix on other pools like BTC Guild and Slush.

I'm having trouble getting Phoenix 1.50 to connect to Deepbit. I'm using the latest version of GUIMiner and the default OpenCL Poclbm miner connects fine but every time I try to use Phoenix it gives me the error in the console "MSG: wrong login or password". And I've double checked my username and password several times.

Is there any way you could add an option to select multiple devices in GUIMiner so that you could just create one miner tab and fill in the info with Server, E-mail, Password, Extra flags, ect and then just select all the devices you want to mine on that individual Worker? That way you wouldn't have to create a ton of different miner tabs if you have 4-6+ devices and use several different pools with different kernels and flags. It would also make it easier to start and stop your miners if you just had to click stop and start once instead of multiple times for each device. Is something like that possible?

You applied the tweak to the phatk.cl file in the main part of the GUIMiner folder didn't you? Because I don't see the bitminer.cl file included with the latest update to GUIMiner any more so I'm guessing that is due to it being replaced with the modified phatk kernel.

Question, if you have to use the BFI_INT flag for this tweak to work with the Phoenix Phatk kernel what flag do you use to make use of it with POCLBM? I'm running the latest version of GUIMiner with the default OpenCL POCLBM miner and extra flags "-v -w128 -f2". I applied this kernel tweak to the modified phatk.cl file that is in the main directory for GUIMiner and it seemed to give me a boost in hash rate but is it actually working without an additional flag?

What kind of average hash rate are you getting reported at the pool your mining through? Does it match up with what your seeing on your miner? Also, what is your stale shares percentage when mining at those speeds with Phoenix?

I have two XFX 6990's.

Yeah I have the OC switch on and the voltage set to 1.12v since 1.175v made no improvement in hash rate.

I've been testing these settings shown here in this thread as well as others on my 6990 for the last two days using GUIMiner and Phoenix 1.50 along with all the kernel tweaks I could find and I'm not getting anywhere near 432-455Mh/s. At 910/840 clock speeds using the flags (-k phatk VECTORS BFI_INT AGGRESSION=7 WORKSIZE=128) on Windows 7 x64 with the 11.7 CATs I'm getting about 407 Mh/s which is 25-48Mh/s less per core. So if you guys are actually getting speeds in the range of 432-455 Mh/s at 910Mhz there must be something else going on here allowing the higher hash rate other than just using the settings mentioned otherwise the results would be more replicable.

Download the latest Catalyst 11.7 Preview drivers and you should no longer need a dummy plug for Windows.

http://developer.amd.com/tools/gDEBugger/Pages/default.aspx

Tested the latest 2011-07-07 kernel on my 6990 @ 880Mhz core using the latest 7/1 version of GUIMiner without any additional kernel tweaks and saw roughly a 15 Mh/s increase. Thanks and hope to see further improvements in hash rate to come .

Lower the voltage to 1.12v if your using the BIOS switch to enable 880/1250 clocks and then lower your memory clocks as far as you can until you see a drop in Mh/s. After that it's just up to getting better airflow to the cards. My room is pretty warm with ambients ranging in the 75-80F department but I have a Silverstone FT02 case with the side panel off and a tower fan blowing in the direction of my 6990.

Any time you enter a new cell in a game the textures needed are loaded into VRAM for that cell. This is why your VRAM usage goes up with the use of high-res texture packs. It is also why your VRAM usage goes up with the use of Anti-Aliasing and Anisotropic Filtering which is applied to those textures present in the VRAM.

Yeah I've already tried lowering the memory clocks further as well as raising them higher and it doesn't really effect the hash rate. Lowering the memory speed only really seems to improve temps more than anything else. Also his guide suggests using Windows 7 x64 and Catalyst drivers 11.6 or 11.7 which I've tried both.

The last couple of days I've been tweaking trying to get the highest Mh/s I can on my 6990 and after trying a number of different overclock settings, extra flags, every kernel tweak I could find and even several different miners and pools I still don't get anywhere near the 432-455Mh/s at 910Mhz that this guy is showing he's able to achieve here:

http://forum.bitcoin.org/index.php?topic=25798.0

So I'm just wondering what it is I'm missing that he found in order to get that additional ~27-50Mh/s at only 910Mhz core speed. Is anyone else here able to replicate his Mh/s or anywhere close to it?

I'm using the exact same settings as him and this is what I'm getting at 910Mhz core clock per GPU:

Operating System:
Windows 7 X64
Aero Theme Disabled

Drivers:
11.7 preview

Software:
GUIminer: Miner(Phoenix with 3% patch to phat kernal), Flags(-k phatk VECTORS BFI_INT AGGRESSION=7 WORKSIZE=128)

GPU Clocks:
Core: 910
Mem: 840

Cooling:
60% Fan speed on cards

Temps:
Hottest: 72c
Coolest: 71c

Hash Rate:
405 MH/s per GPU