I have just got a 370, with a quadro fx540pci, all from dell. All went well for around 2 months, the cpu fan started to fail, now the motherboard is on its way out (error codes gallor)......
When we called dell they wouldnt come out till we ran the dell diag test. That didnt show anything so they wouldnt come out or fix it.
We then looked into the bios, and all the errors were listed there. When we told dell they quickly came out.
But Dell didnt tell us to look in the bios, just told us to run their own diag test.
Even then after all the hours wasted ( 3 reistalls of all software, drivers toolbars bla bla bla) they were only prepared to replace the parts, not, oh we are sorry for the shoddy pc and service heres a new one.
Its only cos our company has a contract with em we get stuck with them....
my opinion: You have to be crazy to buy DELL. They are expensive, U have to buy dell hardware to upgrade. No support, the list goes on.
I have had 2 dells now, both seam to be friday afternoon pc's.