Molykote :
I am by no means a computer building expert, but came across this thread by accident. I went from a mid grade i5 + 16GB (Dell XPS) to an i7-4790K +32GB (self built) and the difference was pretty astonishing using CS6 and DxO 9 for my 22MP Canon 5D3 files (a little under 30MB in RAW form). The same Samsung SSD was used in both computers.
I bought a mid grade graphics card as an upgrade from the crappy but adequate HD6450 that came in my Dell ($150 in my new machine, but I was told that it would be of minimal significance). For perspective I removed the video card and did some operations without it (integrated graphics on an Asus Z97-A). The speed seemed nearly the same, so I'd imagine that the "don't overkill the graphics card" advice was solid.
I won't get involved in the "OMG 2 Bluray drives" discussion. However, with regard to processing speed I would absolutely recommend the extra CPU power and RAM... especially if you're dealing with a small incremental cost. Running the DxO PRIME denoising function on an 18MP RAW file (Canon 7D) would take 7+ minutes on my i5/16GB setup. On my i7/32GB setup the same file took about 2.5 minutes. I'm only an amateur, but I'd imagine even a part time professional would justify the full cost of the machine I just built ($1500 + recycled SSD + recycled 1TB platter used for post processing photo storage only). I do recognize that my DxO prime example might be extreme (and by no means necessary for every photo), but the long processing times of this function do at least help to demonstrate the improvements under "full throttle" processing conditions. How much intense editing one does on a particular photo is case specific (and possibly hard to predict - since I try to take a photo that needs minimal editing whenever possible!).
I bought a mid grade graphics card as an upgrade from the crappy but adequate HD6450 that came in my Dell ($150 in my new machine, but I was told that it would be of minimal significance). For perspective I removed the video card and did some operations without it (integrated graphics on an Asus Z97-A). The speed seemed nearly the same, so I'd imagine that the "don't overkill the graphics card" advice was solid.
I won't get involved in the "OMG 2 Bluray drives" discussion. However, with regard to processing speed I would absolutely recommend the extra CPU power and RAM... especially if you're dealing with a small incremental cost. Running the DxO PRIME denoising function on an 18MP RAW file (Canon 7D) would take 7+ minutes on my i5/16GB setup. On my i7/32GB setup the same file took about 2.5 minutes. I'm only an amateur, but I'd imagine even a part time professional would justify the full cost of the machine I just built ($1500 + recycled SSD + recycled 1TB platter used for post processing photo storage only). I do recognize that my DxO prime example might be extreme (and by no means necessary for every photo), but the long processing times of this function do at least help to demonstrate the improvements under "full throttle" processing conditions. How much intense editing one does on a particular photo is case specific (and possibly hard to predict - since I try to take a photo that needs minimal editing whenever possible!).
The performance increase was likely due to the fact it is a self built machine, rather than a mass manufactured box. A self built PC is generally built using better and matched components, rather than whatever was cheapest that week. The difference between an i5 and an i7 are not really noticeable to most users, as well as the difference between 8 and 16gb of RAM. I am not saying the difference isn't there, only that it isn't utilized by most consumers/users. Even gaming will not benefit in any way that is noticeable to the average user (unless you are using a FPS monitor, and think that 2-3 FPS is a noticeable difference *here is a clue, it is not*). The only noticeable difference between the two specs will come when you are doing heavy number crunching (workstation type loads) and video encoding/editing, which are not typical consumer level loads.