7800 gtx scores just halved

[ashagplz]

within the space of a month my 3dmark 2005 score has gone from around 9000 to around 4000 with no system changes...the system is a e6600 @3.15 ghz and 2 gig ram.....the card is still running at its rated speed of just under 500mhz...cant find any reason for the sudden drop in performance which i also see in games..i.e bf2 dropping from around 80fps to around 30fps...

any ideas where to look?

 

[ashagplz]

tried a bunch of drivers..newer and old..same result

 

[ashagplz]

only have an unbenched cheapo card and not sure what it would score anyway...might try it.....

speedstepping and throttling turned off...

sandra multimedia and memory scores are still same as when everything was normal...so it does seem a card issue..but how cna a card run at the same speed and score half the marks?

 

[ashagplz]

i never benched it with 06 so thats why i didnt do that..also all other benches are fine..such as sandra above and super pi at seconds....im wondering if i missed something in the bios..gonna check that..