Disk Image encryption complexity (number of hash iterations) is variable from file to file (from 1000 upto 300 000). The following tables are based on .dmg files with 100 000 iterations.
The final password recovery speed is equal to CPUspeed + GPU(1)speed + ... + GPU(N)speed.
For example: Intel Core i3 + AMD R9 270 = 250 + 3500 = ~3750 p/s.

I password protected a.dmg file ages ago and stupidly forgot the password but I know some of the numbers that could be in the password and I know of some words that could be in the password. Are there any programs that could crack the password for me? For example a bruteforce program (for mac). If you have an idea what the password is, you can use a password guessing program. If you know the length of the password, you can try xnav's option. If you know none of this, you can try to crack it; if its a password of any strength however, you'll probably be out of luck (unless you have several years to try).

CPU:
Instructions Set:
Speed p/s:

Intel® Core™2 Duo T7500 @ 2.20GHz	Intel® Core™ i3 2100 @ 3.10GHz	Intel® Core™ i3 4130 @ 3.40GHz	Amazon EC2 'c5.large' Xeon® Platinum core
SSE2	AVX	AVX2	AVX512
~50	~110	~250	~300

AMD and Nvidia GPUs
Compute units or stream multiprocessors (CU, SM, SMX, SMM) are the main building blocks of GPU calculation power, thus 32xCU GPU card is usually twice as fast as 16xCU GPU card of the same family and architecture running at the same frequency.
You can expect approximately 300-400 p/s performance per every Nvidia SM running at 1Ghz and approximately 150-200 p/s per every AMD CU.

GT 640 (Kepler) 2xSMX, 1045 MHz	Tesla M60 (Maxwell) 16xSMx, 1150 MHz	GTX 1080 Ti (Pascal) 28xSM, 1580 Mhz	Tesla V100 (Volta) 80xSM, 1380 Mhz
+ 670 p/s	+ 7 700 p/s	+ 22 000 p/s	+ 33 000 p/s
670/2/1.05=319	7700/16/1.15=418	22000/28/1.58=500	33000/80/1.38=300

Forgot Dmg Password Windows 7

Forgot Dmg Password Mac

HD 6770 (VLIW5) 10xCU, 850 Mhz	R9 270 (GCN 1) 20xCU, 950 MHz	RX 480 (GCN 4) 36xCU, 1260 MHz	RX Vega 64 (GCN 5) 64xCU, 1500 MHz
+ 1 750 p/s	+ 3 500 p/s	+ 7 900 p/s	+ 17 000 p/s
1750/10/0.85=205	3500/20/0.95=185	7900/36/1.26=175	17000/64/1.50=180

Apply permissions to all items in a folder or a disk. On your Mac, select a folder or disk, then choose File Get Info. If the lock at the bottom right is locked, click it to unlock the Get Info options, then enter an administrator name and password. Click the Action pop-up menu, then choose “Apply to enclosed items.”. Feb 07, 2013 hdiutil locks a DMG file when attempting to mount it, so crowbarDMG runs single threaded, which essentially means a cracking speed of 1 password c/s. For my particular circumstance, this was fine.

Forgot Dmg Password Recovery

It is important to mention that AMD and NVIDIA architectures are quite different and although AMD per CU performance is lower, there are more CUs per card in a similar price range. Moreover GPU performance is somewhat variable with number of factors including GPU/CPU combination and even a driver version. Please contact us if your recovery speed is noticeable different from the data above.