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Thread: 2015 Hardware
Post: RE: 4x 7990 build
| because no one in the HPC world uses Windows. do you know who MOSIX are? |
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epixoip |
Hardware
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39 |
63,647 |
11-18-2013, 10:43 PM |
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Thread: 2015 Hardware
Post: RE: 4x 7990 build
| they do a lot more than sponsor vcl's development. their main business is developing a linux-based cluster operating system... |
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epixoip |
Hardware
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39 |
63,647 |
11-19-2013, 01:52 AM |
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Thread: Review - AMD Radeon R9 290X
Post: RE: Review - AMD Radeon R9 290X
| Bringing this thread back on track, I've determined that most of the problems identified at the start of this thread are caused by Overdrive6. Or rather, the lack of Overdrive6 support in the current ... |
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epixoip |
Hardware
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75 |
216,074 |
11-18-2013, 08:33 AM |
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Thread: 2015 Hardware
Post: RE: 4x 7990 build
| it is on topic. you asked why there are no windows vcl binaries, and if they have intentions of making windows binaries. the answer is they only care about linux binaries, because they only care about... |
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epixoip |
Hardware
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39 |
63,647 |
11-19-2013, 03:17 AM |
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Thread: 2015 Hardware
Post: RE: 4x 7990 build
| do you really mean > 5000, or do you really mean < 5000? if you mean > 5000, then go with the tyan ft77, hands down. if you mean < 5000, go with a UD7 in a Chenbro RM41300. |
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epixoip |
Hardware
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39 |
63,647 |
11-19-2013, 05:42 AM |
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Thread: Need help to build my first hash cracking machine
Post: RE: Need help to build my first hash cracking mach...
| search the forums. this has already been covered dozens of times over. |
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epixoip |
Hardware
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5 |
9,898 |
11-19-2013, 07:30 PM |
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Thread: Review - AMD Radeon R9 290X
Post: RE: Review - AMD Radeon R9 290X
| what does that have to do with hashcat, or even with compute in general? reviews like this have been out there for well over a month now, and are completely worthless for our purposes. from a compute ... |
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epixoip |
Hardware
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75 |
216,074 |
11-21-2013, 07:30 AM |
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Thread: 15k budget - how would you spend it?
Post: RE: 15k budget - how would you spend it?
| search through the hardware forum, we cover this a lot :) but the ft77 is definitely a great place to start, either with 8x 7970 or 4x 7990. and i'd absolutely avoid water cooling. also, i just sent y... |
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epixoip |
Hardware
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4 |
9,557 |
11-22-2013, 12:11 AM |
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Thread: 15k budget - how would you spend it?
Post: RE: 15k budget - how would you spend it?
| there's a complicated reason for why i haven't done that, but the simple answer is, i have a financial motivation not to do so, and it would be inappropriate for me to advertise on these forums. |
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epixoip |
Hardware
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4 |
9,557 |
11-22-2013, 03:28 AM |
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Thread: Possible PSU issue
Post: RE: Possible PSU issue
| do you have supplemental power supplied to the pci bus?
it sounds like what's happening is your gpu is trying to draw too much power through the pci slot, and either the motherboard is proactivel... |
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epixoip |
Hardware
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8 |
16,168 |
11-25-2013, 06:08 AM |
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Thread: Possible PSU issue
Post: RE: Possible PSU issue
| you may or may not see melted plastic. if you do see melted plastic, then yes you will need to replace the motherboard and psu.
the psu is not the culprit! you only need to replace the psu if the a... |
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epixoip |
Hardware
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8 |
16,168 |
11-25-2013, 10:54 AM |
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Thread: Build Spec Review
Post: RE: Build Spec Review
| ^ this. three or four 7970s will do well with it though. but you need to make sure that case can handle four 7970s with the UD7. most can't. |
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epixoip |
Hardware
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13 |
23,979 |
11-26-2013, 10:06 PM |
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Thread: Possible PSU issue
Post: RE: Possible PSU issue
| no, it won't stop working all together if you melt the 12V. i had a board with 4x 6990 that i ran for several months with a melted 12V. very unsafe, but the point is it will still run. that board did ... |
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epixoip |
Hardware
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8 |
16,168 |
11-25-2013, 09:51 AM |
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Thread: Build Spec Review
Post: RE: Build Spec Review
| that chassis you linked to definitely won't hold four GPUs.
the best chassis for the UD7 is Chenbro RM41300-FS81. |
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epixoip |
Hardware
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13 |
23,979 |
11-27-2013, 09:13 AM |
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Thread: Build Spec Review
Post: RE: Build Spec Review
|
brav0hax Wrote: (11-27-2013, 08:19 PM)
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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 ;-)
--
the mos... |
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epixoip |
Hardware
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13 |
23,979 |
11-27-2013, 09:53 PM |
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Thread: Build Spec Review
Post: RE: Build Spec Review
| you need a server chassis with high static pressure fans |
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epixoip |
Hardware
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13 |
23,979 |
11-28-2013, 12:30 AM |
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Thread: Cost optimized GPU farm
Post: RE: Cost optimized GPU farm
| Stay away from the 2027GR-TRFH. I know it looks tempting, six GPUs in 2U, but it does not work for our purposes.
First, it requires passive GPUs with a special mounting bracket (which Teslas have.)... |
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epixoip |
Hardware
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3 |
12,866 |
12-03-2013, 12:24 AM |
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Thread: Cost optimized GPU farm
Post: RE: Cost optimized GPU farm
| you don't really gain anything with expansion enclosures since you're still going to hit the 8 GPU limit, plus you have the drawback of increased startup latency due to sharing 8 devices over one lane... |
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epixoip |
Hardware
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3 |
12,866 |
12-04-2013, 12:16 AM |
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Thread: Radeon HD 7990 Review -- Part 2
Post: RE: Radeon HD 7990 Review -- Part 2
| ambient is around 23C. no, they both run at the same temp. but the gpu that drives the display, even when just sitting at xdm, is always hotter. |
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epixoip |
Hardware
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22 |
53,797 |
12-07-2013, 04:51 AM |
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Thread: Radeon HD 7990 Review -- Part 2
Post: RE: Radeon HD 7990 Review -- Part 2
| if you were to build it yourself it would cost around $13k. reason for doing it is quite obvious. |
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epixoip |
Hardware
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22 |
53,797 |
12-12-2013, 04:09 AM |
