mfaktc hanging ?!

[NormanRKN]

it´s a 680w beQuiet!
this cards dont need extra power cable/connectors.
they only get energy from MB pcie slots (max. 75 watt).
each card need under heavy load max. 65 watt.. usualy 50-55w.
before i had a gtx and a ati in the system and they needed together min. 3 times more power then two 640 that do ;)

to the testruns:

i couldn´t UC the coreclock. it´s always 901.5 mhz but i reduced the memoryclock from 891 to 400mhz and began a testrun with both card together.
fazit: the same as before !

the next run with only one card but both installed. second card in idle-mode.
fazit: the same again.

the next run with only one card installed in the system.
fazit: the same again.

the next run with a gt 640 (slot1) and a OC gtx 260 (slot2) for sure with the same application mfaktc-win-64 (4.2)
fazit: the same again with the exception that the gtx is working and working ... after i´ve stopped ;)

the next run with two gt 640 (slot1 and 2) and a gtx 260 (slot3)
fazit: the same with the exception the old gtx is working. system is a little bit more busy :D

the next run with only the old gtx
fazit: working. !

Norman

[NormanRKN]

NOW IT`S WORKING!

after install newest beta-drivers 3.04.79 (some fixes included) mfaktc is running

[aketilander]

Originally Posted by NormanRKN

@aketilander: no, cards are in pcie2 slots (16x) but they downcompatible and the bandwidth should more then enough with 16 lanes.
mfaktc used not much memory and so the controllerload is very low.

Well I don't think your cards will work in PCI-E 2 slots, but I am not an expert. Please check the manual which the cards came with.