My T9300 cpu arrived today from NewEgg. The cpu swap on my T2330 based Y510 went smoothly. I did apply some thermal paste on the heat sink contact area to get a good thermal connection. Buttoned it up (whole operation took about 20 minutes) and held my breath while I turned it on. The words "LENVOVO" never meant more than they did on the boot screen. It was ALIVE! It booted up and gave a "new hardware detected" message and indicated it was installing the device driver. When completed, it stated that a restart was required.
After this reboot it seemed fine. I even ran a benchmark or two just to make sure it would take a load. But shortly I got an error that "Digital Cable device registration" had a problem and had stopped. **bleep**... I didn't know to expect this one...but happily a Google search found the solution. There is a DRM folder that I had to empty and restart. After that the Digital Cable error went away and all is well. I still don't know what that is all about, but it appears to be a common problem for overclockers and signficant cpu upgrades.
So - the swap of a new T9300 for the original T2330 is indeed virtually "plug and play". The only anomaly I've seen is the two core cpus always display a few degrees difference in their operation temperatures. Core 1 is invariably a bit cooler than core 2. Not much (a few degrees F) but it seems odd. Perhaps this is normal... The Arctic Silver installation info indicates that sometimes it takes a couple hundred hours of operation to get maximum efficiency out of the thermal paste. Time will tell.
Anyway, for those who have been reluctant to pursue such an upgrade, I'll just say that my experience was golden. Not much harder than swapping the RAM. Now - anybody need my old T2330 cpu? lol
BTW - the simple Vista experience index value has improved. On my factory stock Y510 it was 3.1 (with graphics being the lowest performer). After the upgrade (including an upgrade to 4gb of RAM) it now registers 3.5 and the processor value is 5.4! Every test value increased with the single exception of primary hard disk which remained at 5.2.
I am happy with the upgrade. Was a bit of a gamble to spend $325 on a cpu upgrade to a machine that I bought new for $529 a few months ago. But then, I've got a lot of performance now and probably couldn't replicate it with a new Lenovo at anything near the same investment. The experiment was worthwhile!