NVIDIA 840M (laptop)
#1
Did some overclocking just for fun and informational testing and here are the benchmark results:

OS: Windows 10 64bit
Driver: 355.60
oclHashcat v1.37

Default settings for WPA = 31,400 hashes per second
Default settings for MD5 = 790,000 hashes per second


+135 Mhz GPU Clock Offset = 35,100 hashes per second for WPA (11.78% performance increase over stock)
+135 Mhz GPU Clock Offset = 881,000 hashes per second for MD5 (11.39% performance increase over stock)

Tool used: EVGA Precision X 16 software utility. Raising the Mem Clock Offset will actually hinder performance so it's left alone. Most of us know already that unless you have adequate cooling, overclocking a laptop GPU is NOT recommended!

To put this into perspective, if it normally takes your word list 1 hour to complete, then:

10% increase = 6 minutes faster (54 minutes)
11% increase = 6.6 minutes faster
12% increase = 7.2 minutes faster

For 10 hours, a 12% increase in performance is about 1.5 hours shaved off of your time.


Messages In This Thread
NVIDIA 840M (laptop) - by logistix111 - 09-05-2015, 07:30 PM
RE: NVIDIA 840M (laptop) - by Difermo - 09-07-2015, 08:24 AM
RE: NVIDIA 840M (laptop) - by FlippingGerman - 09-08-2015, 02:58 AM
RE: NVIDIA 840M (laptop) - by Difermo - 09-08-2015, 09:15 AM
RE: NVIDIA 840M (laptop) - by FlippingGerman - 09-09-2015, 09:15 PM
RE: NVIDIA 840M (laptop) - by atom - 09-14-2015, 11:27 AM