Posts: 6
Threads: 2
Joined: Dec 2014
I have
GPU 1
Ati Radeon HD7870 XT With Boost (Tahiti core 7950/2 ( share on 2) = my 7870)
Program to recover WPA/WPA2 passcape and elcomsoft give me speed about 120000-160000 pass/s
oslHashCatGui give me 49312 pass/s
Seems there in oclHashCat is a special limitation on the graphics card
How to remove this limit and who made it and for what???
2 And anyway very small speed on all card less than other programs (passcape and elcomsoft ) on 5000-10000 pass/s
How to contact the developer on this subject?
Posts: 2,940
Threads: 12
Joined: May 2012
First, there is no "special limitation."
Second, those other programs are lying to you. Your GPU has 1536 cores @ 975 Mhz, and WPA2 has ~ 14000000 instructions. Therefore the theoretical maximum performance for your GPU is:
1536 cores * 975000000 Hz / 14000000 instructions =~ 106.9 KH/s
To get 160 KH/s out of your GPU you'd need a clockrate of ~ 1458 Mhz, which your card cannot support.
Third, you've not posted your command line or even specified the attack you are running to obtain this number. Try running "oclHashcat64.exe -b -m 2500," it should be around 100 KH/s. If so, there is something wrong with your attack. Maybe you have a very high rejected rate due to testing mostly candidates that are less than eight characters.
Posts: 6
Threads: 2
Joined: Dec 2014
Thanks for the answer, my command line such
oclHashcat64.exe -a 3 -m 2500 --session=all -o "C:\Users\Palladin\Desktop\Hashcat GUI-WORK\ALEX_found.txt" --outfile-format=2 -w 2 --gpu-temp-retain 45 "C:\Users\Palladin\Desktop\CLEAN\ALEX.hccap" ?d?d?d?d?d?d?d?d?d?d
Му speed is
Device #1: Tahiti, 2048MB, 725Mhz, 24MCU
Device #2: Cypress, 1024MB, 725Mhz, 20MCU
Device #3: Cypress, 1024MB, 725Mhz, 20MCU
Device #4: Cypress, 1024MB, 725Mhz, 20MCU
Device #5: Cypress, 1024MB, 725Mhz, 20MCU
Device #6: Cypress, 2048MB, 725Mhz, 20MCU
Device #7: Cypress, 2048MB, 725Mhz, 20MCU
Speed.GPU.#1...: 49357 H/s 7870
Speed.GPU.#2...: 79676 H/s 5970
Speed.GPU.#3...: 79592 H/s 5970
Speed.GPU.#4...: 79752 H/s 5970
Speed.GPU.#5...: 79753 H/s 5970
Speed.GPU.#6...: 98346 H/s 5990
Speed.GPU.#7...: 98413 H/s 5990
Posts: 6
Threads: 2
Joined: Dec 2014
What's the key -b
Where can I find a description of all key commands?
I'll try to start with the key -b
Posts: 6
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Joined: Dec 2014
With key -b i have error invalid argument for benchmark mode specified
oclHashcat64.exe -a 3 -b -m 2500 --session=all -o.........................
Posts: 2,940
Threads: 12
Joined: May 2012
This is likely your problem:
Quote:-w 2 --gpu-temp-retain 45
Get rid of --gpu-temp-retain and use -w 3.
Your 7870 is also clocked at 725 Mhz instead of 975 Mhz, so that's another problem.
For benchmark mode your command is incorrect. Your command should just be simply "oclHashcat64 -b -m 2500"
Quote:Where can I find a description of all key commands?
"oclHashcat64 --help" or read the wiki page http://hashcat.net/wiki/doku.php?id=oclhashcat
Posts: 6
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Joined: Dec 2014
with command oclHashcat64 -b -m 2500
I have log....
C:\UTemp>C:
C:\UTemp>cd "\Users\Palladin\Desktop\Hashcat GUI-WORK\oclHashcat-1.31
C:\Users\Palladin\Desktop\Hashcat GUI-WORK\oclHashcat-1.31>oclHashcat64 -b -m 25
00
oclHashcat v1.31 starting in benchmark-mode...
Device #1: Tahiti, 2048MB, 725Mhz, 24MCU
Device #2: Cypress, 1024MB, 725Mhz, 20MCU
Device #3: Cypress, 1024MB, 725Mhz, 20MCU
Device #4: Cypress, 1024MB, 725Mhz, 20MCU
Device #5: Cypress, 1024MB, 725Mhz, 20MCU
Device #6: Cypress, 2048MB, 725Mhz, 20MCU
Device #7: Cypress, 2048MB, 725Mhz, 20MCU
Hashtype: WPA/WPA2
Workload: 4096 loops, 32 accel
Speed.GPU.#1.: 103.3 kH/s
Speed.GPU.#2.: 96022 H/s
Speed.GPU.#3.: 81976 H/s
Speed.GPU.#4.: 81925 H/s
Speed.GPU.#5.: 96056 H/s
Speed.GPU.#6.: 96010 H/s
Speed.GPU.#7.: 96075 H/s
Speed.GPU.#*.: 651.3 kH/s
WARNING: Failed to restore default fan speed for gpu number: 0:
WARNING: Failed to restore default fan speed for gpu number: 3:
WARNING: Failed to restore default fan speed for gpu number: 4:
WARNING: Failed to restore default fan speed for gpu number: 6:
Started: Mon Dec 29 13:47:45 2014
Stopped: Mon Dec 29 13:48:02 2014
C:\Users\Palladin\Desktop\Hashcat GUI-WORK\oclHashcat-1.31>pause
with command -w3
oclHashcat64.exe -a 3 -m 2500 --session=all -o "C:\Users\Palladin\Desktop\Hashcat GUI-WORK\ALEX_found.txt" --outfile-format=2 -w 3 --gpu-temp-abort=80 "C:\Users\Palladin\Desktop\CLEAN\SHARIF\ALEX.hccap" ?d?d?d?d?d?d?d?d?d?d
I have log....
Session.Name...: all
Status.........: Running
Input.Mode.....: Mask (?d?d?d?d?d?d?d?d?d?d) [10]
Hash.Target....: alex (48:44:f7:9c:8f:f3 <-> cc:5d:4e:4a:b2:30)
Hash.Type......: WPA/WPA2
Time.Started...: Mon Dec 29 13:33:06 2014 (48 secs)
Time.Estimated.: Mon Dec 29 17:55:35 2014 (4 hours, 21 mins)
Speed.GPU.#1...: 102.7 kH/s
Speed.GPU.#2...: 95711 H/s
Speed.GPU.#3...: 81690 H/s
Speed.GPU.#4...: 81700 H/s
Speed.GPU.#5...: 95669 H/s
Speed.GPU.#6...: 95725 H/s
Speed.GPU.#7...: 95670 H/s
Speed.GPU.#*...: 648.9 kH/s
Recovered......: 0/1 (0.00%) Digests, 0/1 (0.00%) Salts
Progress.......: 30588928/10000000000 (0.31%)
Skipped........: 0/30588928 (0.00%)
Rejected.......: 0/30588928 (0.00%)
HWMon.GPU.#1...: 99% Util, 54c Temp, 100% Fan
HWMon.GPU.#2...: 99% Util, 45c Temp, N/A Fan
HWMon.GPU.#3...: 99% Util, 46c Temp, N/A Fan
HWMon.GPU.#4...: 99% Util, 47c Temp, 100% Fan
HWMon.GPU.#5...: 99% Util, 48c Temp, 100% Fan
HWMon.GPU.#6...: 99% Util, 52c Temp, N/A Fan
HWMon.GPU.#7...: 99% Util, 54c Temp, 100% Fan
[s]tatus [p]ause [r]esume [b]ypass [q]uit =>
But speed on my 5990 ( GPU 6 and GPU 7) Faling down there were 98000 with key -w3 only 95000 ????
what can be done to change the speed, can prescribe parameters for each video card ???
Thanks for the help you are a professional))))I am a beginner...
Posts: 2,940
Threads: 12
Joined: May 2012
Ok, so with the proper workload settings you're getting 102.7 KH/s - 103.3 KH/s with your 7870, which aligns perfectly with the theoretical max performance of 106.9 KH/s. Therefore oclHashcat is quite optimized for your card, and you can see there is no limitation here.
There's no such thing has a 5990, that card does not exist. Maybe you meant a 5970 or a 6990. Either way, there's not much difference between 95 KH/s and 98 KH/s. Cracking speed is rarely constant, and 3 KH/s fluctuation is normal. Don't stress over this.
Based on the output you posted, everything here looks completely normal.
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