G74SX-A1 - stock hardware - BIOS 202 - 2nd Monitor VISIO VF551XVT
You're right, but when you regularly work with Photoshop, and 12MB RAW image files it does make a difference. That's why a comparitive benchmark between the series 510 and the 320 on a G74 would be helpful.
If a 12Mb RAW file is writing to disc while you're working with it, you need more RAM!
I had the Crucial M4 installed on my Rampage III BE so I put the OCZ Vertex 2 on the G74 to start with and them got to thinking I have things backwards here, so I wipe them both and swapped them between the systems. I really don't seem to see any difference in how fast the apps open, boot times, or anything else. But, then again the Crucial M4's are not the fastest of the SATA III drives anyways.