It's been five or six years since I last upgraded my PC which means a) it's old and b) I'm out of the loop. I'm hoping if I run my plans past you lot you can point out anything I've missed. I'm currently running Vista on a Core 2 Duo with 8GB DDR2 RAM and an nVidia 8800GT with an 800W supply. I have a 1TB HDD which I'm perfectly happy with. My plan is to update the processor and GFX, with an implied replacement of the motherboard and PSU, and upgrade to Windows 7. I was hoping to re-use my existing RAM but it would appear that DDR2 is too out of date and incompatible with all the DDR3-based MB's knocking about. I've seen the following on Dabs and wondered what you thought given a budget of ~£800: Asus Intel Gamer Plus Ivybridge Bundle (Includes P8Z77-V, Intel Core i7-3770K & 8GB DDR3) (ASUSINTEL-BUN1 - dabs.com Gigabyte GeForce GTX 550 Ti 970MHz 1GB PCI-Express HDMI (OverClocked) (GV-N550OC-1GI) - dabs.com Fractal Design Newton R2 1000W 80Plus Modular (FD-PSUNEWT21000) - dabs.com Is the GTX 550 Ti a worthwhile investment to last at least 3 years, or is it already knocking on? Dabs have GTX690s going for around £900 which is ******* ridiculous. The GTX 570s are ~£220 but are they worth paying double for? Perhaps a more complicated question is to do with my OS upgrade plan: I want to build the new rig with the existing HDD (and existing Vista installation) but then stick the Windows 7 CD straight in. Is it possible to do the OS upgrade and handle the change in hardware profile in one go, or should I boot up the new rig with the Vista installation disk, do the necessary, and upgrade to 7 once it's settled? I'm running 32-bit Vista (the 4GB of unused RAM I have sat in the machine only cost an extra £20 when I bought my last PC so I went for it on the off-chance I updated to a 64-bit OS) and I'd be going for 64-bit 7 - will this make a difference? Should I even bother with 7 or just repair my Vista for the new hardware, run it on 4GB RAM for a bit, then invest in Windows 8 when it comes out? Views, opinions, alternative stores etc. all appreciated.