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    Thread: Possible PSU issue
Post: RE: Possible PSU issue

Had the motherboard replaced...it wasn't the issue. The 12v rail was fine everything was in good condition when they looked at it. Issue still exists with new MB. Was told the MB should have no proble...
brav0hax Hardware 8 29,708 12-08-2013, 04:56 AM
    Thread: Build Spec Review
Post: RE: Build Spec Review

Understood, again, how to keep those at proper temps without liquid cooling...escapes me since one 7990 is lake a blast furnace. And I assume the slots don't allow for a lot of airflow when they are s...
brav0hax Hardware 13 44,492 11-27-2013, 10:55 PM
    Thread: Build Spec Review
Post: RE: Build Spec Review

Thats good to know...but I am curious because I see boxes with like 8-10 7990s and not watercooling so somebody has it figured out somewhere ;-) davejcb Wrote: (11-27-2013, 03:52 PM) -- I doubt it...
brav0hax Hardware 13 44,492 11-27-2013, 08:19 PM
    Thread: Build Spec Review
Post: RE: Build Spec Review

Understood. I am just looking for the possibility of two 7990's with enough space so one doesn't overheat the other. (Without going the way of liquid cooling.) That board and that case "looks like"...
brav0hax Hardware 13 44,492 11-27-2013, 11:57 AM
    Thread: Build Spec Review
Post: RE: Build Spec Review

What about a case like this and a few delta fans? ARK IPC-4U600 Black 1.2mm SECC Zinc-Coated Steel 4U Rackmount Server Chassis 3 External 5.25" Drive Bays http://www.newegg.com/Product/Product.a...
brav0hax Hardware 13 44,492 11-27-2013, 06:48 AM
    Thread: Proper Airflow and Case Selection
Post: RE: Proper Airflow and Case Selection

Def good to know since my original plan was 2 7990's with Delta fans ;) davejcb Wrote: (11-25-2013, 05:58 PM) -- I thought with all the airflow the Delta fans give that it would work with the 7990...
brav0hax Hardware 9 30,878 11-25-2013, 07:55 PM
    Thread: Possible PSU issue
Post: RE: Possible PSU issue

werd. Thanks for taking me to school. I am truly learning a ton here. You know now that you mention it, the first day or so, there was a faint smell or melting plastic. I thought it was just the new ...
brav0hax Hardware 8 29,708 11-25-2013, 11:02 AM
    Thread: Possible PSU issue
Post: RE: Possible PSU issue

Thanks again for the great info. Sounds like either way the PSU is the culprit and will need to be replaced. After looking at the link you sent, I guess if I pull the plug from the board I should b...
brav0hax Hardware 8 29,708 11-25-2013, 10:15 AM
    Thread: Possible PSU issue
Post: RE: Possible PSU issue

Melted down the 12V? Wouldn't it stop working all together then? Its a single 7990 card with a 875w PSU. I assume I want a 1000W but was told 875 was enough power for the card. To answer your qu...
brav0hax Hardware 8 29,708 11-25-2013, 07:06 AM
    Thread: Possible PSU issue
Post: Possible PSU issue

I have been trying to diagnose this issue for a week or so now. I am fairly certain its the PSU, though it is a brand new unit so I didn't want to blame it immediately. The PSU is 875w with one 799...
brav0hax Hardware 8 29,708 11-25-2013, 05:46 AM
    Thread: Proper Airflow and Case Selection
Post: RE: Proper Airflow and Case Selection

That's good to know. My current case would have the two 7990's stacked. So like you said with the fans blowing all the hot air directly on the bottom card, it probably won't have a chance... I've t...
brav0hax Hardware 9 30,878 11-25-2013, 05:38 AM
    Thread: 100 BHash/s NTLM mark broken on single system
Post: RE: 100 BHash/s NTLM mark broken on single system

@gpufreak - What are you using to cool this unit? I see the hoses so assume liquid. What is your setup? Hardware/etc.
brav0hax User Contributions 20 73,335 11-16-2013, 03:20 AM
    Thread: Proper Airflow and Case Selection
Post: RE: Proper Airflow and Case Selection

OK great....I am looking at fans that can push 150CFM I figure 4 of those should be able to provide adequate flow and perhaps even an additional card at some point.... Thanks again, Eric
brav0hax Hardware 9 30,878 11-15-2013, 03:12 AM
    Thread: Proper Airflow and Case Selection
Post: RE: Proper Airflow and Case Selection

epixoip Wrote: (11-14-2013, 03:16 AM) -- https://hashcat.net/forum/thread-2375.html -- I was hoping you'd respond because I read your post. So a full 4U server chasis is what you would recommend. ...
brav0hax Hardware 9 30,878 11-14-2013, 04:27 AM
    Thread: Proper Airflow and Case Selection
Post: Proper Airflow and Case Selection

I am a newbie to this whole thing and I have already made some big mistakes. I have googled for the answers and search the forums, but can't find anything quite specific enough for me. Instead of spe...
brav0hax Hardware 9 30,878 11-14-2013, 03:09 AM