been having a play with this, it came with graphics card [asus 8800 gtx 768mb]
so i tried O'Clocking card then use 3d mark. when i get over 614 MhZ it is unstable and crashes machine, i am now trying the mem option to make it higher [900MhZ atm] any advise as i see peeps say they have over 614MhZ. It does pass the nvidia gpu test when you do it, but the extreme 3d mark test kills it on the 3rd demo.
More aboutbenchmark question
well because it passed the nvidia test and the first few tests of 3dmark i want to say that it may be a heat issue. but also there are certain cards that just dont overclock well. i know that the gtx's dont usually have a problem but who knows.
it seems to die on the cpu tests, so perhaps having it at 3.ghz is affecting it