I'd unsuccessfully tried to find a prove that 2Mb of L2 is better than 1Mb of L2 on the MDD, and I think I have found it... by chance.
My recent setup of a RAID0 SSD's on a 64bits SATA controler was to try to put NI DFD (Direct from Disk) to properly work.
I've achieved a Max transfer rate of 190 MB/s,but DFD worked as bad as usually.
This test was done in a MDD 1.5Ghz single (1.25 overclocked) with 1Mb L3.
Further test, evidence a CPU speed problem. DFD besides hard HD work, seems to implies a 25-50% more of compute power.
I've put the RAID and the SATA card into a more speedier Sawtoth
[email protected] Ghz, but without achieve any enhacement.
The surprise come when I put the SSD RAID and the SATA card into a
[email protected] (1.42 overclocked) and work noticeably better than in the other two systems even working in single CPU mode.
And what is the main difference between those three systems? ...the 2Mb of L3 in to the 1.66!!