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Thread: Need advisory to build distributed cracking system
Post: RE: Need advisory to build distributed cracking s...
| PC4 on the front page is a Sagitta Brutalis.
Yes it is possible to distribute work between multiple systems. You can use a free/open source solution such as Hashtopus, or a commercial solution such... |
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epixoip |
Hardware
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1 |
5,050 |
01-28-2015, 10:49 AM |
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Thread: GTX 970 VRAM allocation bug
Post: RE: GTX 970 VRAM allocation bug
| It doesn't sound bad at all, and it's certainly not a matter of Nvidia not testing their hardware. It's a matter of using a lower-performing memory controller on a non-flagship GPU, which is entirely ... |
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epixoip |
Hardware
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2 |
5,574 |
01-26-2015, 06:26 PM |
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Thread: Question on why 1 GPU is showing ~100H/s less than the other
Post: RE: Question on why 1 GPU is showing ~100H/s less ...
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epixoip |
Hardware
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1 |
4,623 |
01-29-2015, 06:01 AM |
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Thread: Require a little help here.
Post: RE: Require a little help here.
| This post explains the difference between reference design and OEM design cards, and how to tell the difference: https://hashcat.net/forum/thread-3949-post-22844.html#pid22844
The 7970 & 7950 are la... |
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epixoip |
Hardware
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18 |
27,342 |
01-29-2015, 06:23 AM |
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Thread: Require a little help here.
Post: RE: Require a little help here.
| You will absolutely have cooling problems with non-reference design GPUs, especially in a multi-GPU setup. In addition to cooling problems, yes, OEM design cards are of inferior quality. I have lots o... |
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epixoip |
Hardware
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18 |
27,342 |
01-29-2015, 08:06 AM |
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Thread: Require a little help here.
Post: RE: Require a little help here.
| Yes, that's a reference design card. But not because it says "nvidia" on the board, I believe most if not all say that. |
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epixoip |
Hardware
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18 |
27,342 |
01-30-2015, 11:30 AM |
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Thread: A Radeon HD 6990 for hash cracking. Good or bad idea?
Post: RE: A Radeon HD 6990 for hash cracking. Good or ba...
| Yeah, power and heat are definitely a challenge with the 6990. It's a 425W card with a TDP of 375W. You may have to do a little underclocking to make it happy, or start seeking exotic cooling solution... |
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epixoip |
Hardware
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16 |
26,173 |
01-31-2015, 10:04 PM |
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Thread: A Radeon HD 6990 for hash cracking. Good or bad idea?
Post: RE: A Radeon HD 6990 for hash cracking. Good or ba...
| It's an okay price. They're selling around $130 on eBay right now.
I personally think they're far more hassle than they're worth. We ended up with 24 of them, then promptly sold them all and replac... |
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epixoip |
Hardware
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16 |
26,173 |
02-01-2015, 12:41 AM |
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Thread: A Radeon HD 6990 for hash cracking. Good or bad idea?
Post: RE: A Radeon HD 6990 for hash cracking. Good or ba...
| Power is always an issue. The more power a card draws, the harder it is to cool.
5970 is the same length as the 6990. They are both dual-GPU cards. |
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epixoip |
Hardware
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16 |
26,173 |
02-01-2015, 06:12 AM |
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Thread: A Radeon HD 6990 for hash cracking. Good or bad idea?
Post: RE: A Radeon HD 6990 for hash cracking. Good or ba...
| There's no real market for used GPUs now that GPU mining is dead, so used GPU prices are incredibly reasonable right now. Have a look at what's on the market, I think you'll be surprised. 7970s are se... |
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epixoip |
Hardware
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16 |
26,173 |
02-01-2015, 01:45 PM |
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Thread: A Radeon HD 6990 for hash cracking. Good or bad idea?
Post: RE: A Radeon HD 6990 for hash cracking. Good or ba...
| Completely disagree. As stated above, we had 24x 6990 and we couldn't get rid of them fast enough. The only card I've loathed more than the 6990 is the 295X2.
The 280X is just a re-branded 7970 tha... |
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epixoip |
Hardware
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16 |
26,173 |
02-01-2015, 10:41 PM |
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Thread: Require a little help here.
Post: RE: Require a little help here.
| Right, in systems with only one GPU a reference card might do okay. But the fact that the 270 is only a 75W card is the real reason why it's able to cool itself well. You realize that's nearly half th... |
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epixoip |
Hardware
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18 |
27,342 |
02-12-2015, 06:25 AM |
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Thread: Radeon R9 390X News
Post: RE: Radeon R9 390X News
| Just as worthless for oclHashcat as the 295X2. |
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epixoip |
Hardware
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11 |
24,217 |
02-16-2015, 08:57 PM |
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Thread: Radeon R9 390X News
Post: RE: Radeon R9 390X News
| There's no innovation here. AMD's game plan for last generation and the next is simply "let's keep adding more cores to our aging architecture." Obviously not a scalable plan, and that's why they're r... |
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epixoip |
Hardware
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11 |
24,217 |
02-16-2015, 10:29 PM |
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Thread: Radeon R9 390X News
Post: RE: Radeon R9 390X News
| Not really. Nvidia is still the de facto compute vendor. AMD was never competitive in that space.
But remember that GPGPU is nothing more than a hack. Manycore CPUs will eventually displace GPUs fo... |
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epixoip |
Hardware
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11 |
24,217 |
02-17-2015, 01:14 AM |
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Thread: Need Help With a new build plz!
Post: RE: Need Help With a new build plz!
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alexalex9998 Wrote: (02-20-2015, 12:53 AM)
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I am going to be cracking MD5 and NTML. Heat is not a problem. Any recommendation for a power supply for 11 R9 290x's?
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You cannot have 11x 290X in ... |
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epixoip |
Hardware
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28 |
40,947 |
02-20-2015, 01:22 AM |
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Thread: 6950 weaker than 5870
Post: RE: 6950 weaker than 5870
| 5870 is directly comparable to a 6970, so yes, 6950 should be slower.
You cannot use Catalyst 11.11 with any version of oclHashcat. Old versions of oclHashcat are timebombed and no longer work.
... |
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epixoip |
Hardware
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3 |
6,286 |
02-23-2015, 04:37 AM |
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Thread: 6950 weaker than 5870
Post: RE: 6950 weaker than 5870
| 5850 would be comparable to a 6950, yes. |
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epixoip |
Hardware
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3 |
6,286 |
02-23-2015, 04:48 AM |
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Thread: GTX 970 Benchmarks
Post: RE: GTX 970 Benchmarks
| You just answered your own question: no Xorg, so no PowerMizer tuning. Cards are throttling to save power. |
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epixoip |
Hardware
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17 |
35,950 |
02-23-2015, 10:11 PM |
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Thread: Crypto Miner Conversion
Post: RE: Crypto Miner Conversion
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Atticuss Wrote: (02-23-2015, 10:55 PM)
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How common is it for CPU cracking to be a better option than GPU? Does it come down to something as simple as hash type?
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Hash type + attack mode. For ex... |
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epixoip |
Hardware
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11 |
20,085 |
02-24-2015, 12:46 AM |
