Do you need a core per gpu?

[rowpie]

Right now i believe that when you use a graphics card you lose one cpu core to the crunching hence the using of old computers by you lot.

What if you were to build a system with 4 graphics cards and a cheep single core as a crunching box (no im not going to but i can dream)

would only one graphics card be able to run?

Just a thought.

[MacDitch]

Theoretically you can run one graphics card per thread/core/whatever. That said, as Megacruncher is finding, multiple cards can be iffy.

If you put 4 graphic cards with (say) a Pentium3, then three of them would be idle. Use a Quad or hyperthreaded P4 and all 4 may be utilised.

Clear as mud? :)

[rowpie]

so currently if you were to put 3 or 4 cards into a board you need a quad core cpu to run them (or a dual core with HT if they can be found)

seems like this boinc gpu adventure has a long way to go yet.

[Temujin]

seems like this boinc gpu adventure has a long way to go yet.

Possibly not according to this post by GDF of PS3Grid
Cpu cores will soon be not necessary.

[rowpie]

good news indeed by the looks of it.

would allow mega graphics cruncher with cheap cpu or even better a mega quad cpu which is also crunching lol