[q] Graphic card for brute force pass cracking?

[hacker@sr.gov.yu]

So I want to buy a card for cracking passes(apps like passwords pro). My choise is Gainward GeForce® GTS 450 512MB GDDR5 (Nvidia link here)it has 192 CUDA cores and GPU clock 783 Mhz. What do you think? Does memory type(DDR3, DDR5) or memory clock matter for pass cracking or not?

[FuyuKitsune]

Nope. You're gunna want ATI. Somebody asked once, here's my reply:

NO NVIDIA.

For hyperparallel processing you would be better off with several AMD/ATI cards. AMD's "more cores!" mentality is really badass for cracking. NVidia designs cards that are fairly balanced and even the Tesla series don't match AMD's core count. NVidia's balanced style is good for graphics (it stays on par or slightly exceeds 'more cores') but sucks for bruteforcing.
This style difference is extremely noticeable to anyone who has mined bitcoins which is basically bruteforcing SHA-256 hashes. NVidia cards get utter crap speeds while the AMD cards fly. Even the optimized CUDA SHA functions are lucky to get a third of the speed of OpenCL on AMD. Check this chart and see the diff:
https://en.bitcoin.it/wiki/Mining_hardware_comparison Leftmost column is the card model, 2nd from the left column is the hashrate in million hashes per second.
Mid-to-upper level AMD cards generally get 100-300 (depending on clock) and the 59xx and 69xx series gets 300-800. Nvidia's competing cards get around 1/4 of the AMD cards. The highest NVidia card, some Telsa model, only reaches 155Mhash/s.

tl;dr - want to crack hashes? Use AMD, more cores.

An ATI 5770 would be good for cracking. It's about the same price as the GTS 450.

[ande]

Just a small input here; Dont use passwords pro if you want serious bruteforce. I got like 800k passwords/s on passwords pro and 280M(350M overclocked) with BarsWF: Use BarsWF: http://3.14.by/en/md5

[hacker@sr.gov.yu]

Used BarsWF, but only with CPU not GPU bacause I have ATI card 5750, it doesn't support ATI cards right? Because of BarsWF I want to buy a Nvidia card. I just posted passwords pro bacause it was first on my mind.

[FuyuKitsune]

Take that 5750 and rev up oclHashCat

[hacker@sr.gov.yu]

Take that 5750 and rev up oclHashCat

Will do when I get to that PC, its home where I did not been for days now. What do you think about HD 6770 ?

[FuyuKitsune]

The OpenCL cracking performance will be about the same as the 5770. It'll be better for games but for cracking it's nearly the same.

[hacker@sr.gov.yu]

Model    Mhash/s
5750    105
6770    180

Hm how is this nearly the same? I don't get it. 

[Huntondoom]

sorry to bump into this thread but, how the hell do you crack password with the use of you're Gpu?, isn't that meant for graphic process (still I understand the fact that its has great power but how do you utilize that?)

[noob]

sorry to bump into this thread but, how the hell do you crack password with the use of you're Gpu?, isn't that meant for graphic process (still I understand the fact that its has great power but how do you utilize that?)

GPU can performe parallel tasks x times

[FuyuKitsune]

Model    Mhash/s
5750    105
6770    180

Hm how is this nearly the same? I don't get it. 

You said 5770 which will get about 200MHash/s when configured properly. Same on 6770. The basic with programs with no tweaking will get the rates you posted. I'd go with the 6770 because it will overclock better and have better firmware.

[hacker@sr.gov.yu]

You said 5770 which will get about 200MHash/s when configured properly. Same on 6770. The basic with programs with no tweaking will get the rates you posted. I'd go with the 6770 because it will overclock better and have better firmware.

LOL sorry, its 5750. My mistake. 

[FuyuKitsune]

Oh ok. 5750 will get kinda close to the 5770 and 6770 if you mod the firmware and overclock it. The 6770 is still the best of those.

[noob]

just get the bunch of hashes you will be fine