laviathan and verstapp, was that compared to stock MW CPU app, or the optimized one? I came to a factor of 29 when comparing GPU and CPU opti. app runtimes of my C2D E8500 and ATI 4870HD.
BR,

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>106 times faster
My [quite possibly much less scientific] calculations show my 4870 crunching ~60 times as fast as my i7 940 o/c'd to 3.4GHz

That sounds close to what I would expect if I was to roughly guess your speed, if you had just told me your specifications.

There are some issues with comparing systems using the CPU-equivalent comparison - for example, your system is probably running the ATI app with different settings. I have to have mine set so that I can have smooth GUI and 1080p video playback, at any time I require it, while the GPU's are grunching in the background. If you had the settings optimised for performance then your system would have that advantage over mine. Also things like (system) RAM performance may affect speed of CPU processing of MW WU's which would make the comparison a bit more complicated as well. (An expert on the workings of the CPU based MW application may correct me on that.)

Based on the incredible performance gains from grunching, I have actually stopped running CPU based BOINC projects (as much) in an attempt to save some money on my next power bill... yet I am still pleased with my computers overall contribution to MW.

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laviathan and verstapp, was that compared to stock MW CPU app, or the optimized one? I came to a factor of 29 when comparing GPU and CPU opti. app runtimes of my C2D E8500 and ATI 4870HD.
BR,

Compared to the standard auto-downloaded application with a standard version of boinc client.

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Compared to the standard auto-downloaded app for me too.
WUs are completing in 68sec on my grunching boxes, 3 x i7, 2 x 9450; as suggested by Cluster, it is the GPU [#shaders] that dertermines the processing speed, the cpu seems to have no say in the matter [I'm still eager to try out my Z80. :)].

My 'general use' i7 has <cmdline>w1.2</cmdline> in the app_info.xml file to leave some grunching power for screen updating. I'm not a WoW-er, so my needs are modest. I experimented a bit before settling on 1.2 which gives me reasonable screen update speed and reasonable grunching speed. But only reasonable grunching speed - it takes between 75 and 90sec to do a WU. My grunchers have no cmdline parameters

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Cheers,

PeterV

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I have noticed tonight (I have some spare time) that the new DE WU's are taking a lot longer. Maybe two or three minutes to do 4 simultaneously, where as the last 'type' of WU's were taking only 55-60 seconds. Also it seems they ALL give 74.24 credit now, whereas the last 'type' were giving ~35, ~50, or ~70 (I forget the precise values).

Verstapp, have you experimented with your grunchers by changing the parameters to favor MW performance? There could be a few % gain which is always helpful.

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Perhaps you have a different type of DE to me :) - for the two boxes I checked the DEs are taking the same processing time as previous types of WU.

>experimented
No, unlike WoW-ers, i don't do obsessive-compulsive. If I want more performance i just add another 4870 to another box, which is how come I now have 6 4870s in 6 boxes, all of which have their cpus flat out doing cpdn.

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Cheers,

PeterV

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