Apple Mac Upgrades - RAM, SSD Flash, External Drives and More

Convert AIFF to MP4 (AAC 128 bit) - iTunes 4	L2 Cache	L3 Cache	Time, Sec.

Reference Apple Systems

PM G4/466MHz Digital Audio	1MB SPB SRAM	0MB	631
PM G4/2x 533MHz Digital Audio	1MB SPB SRAM x2	0MB	515
PM G4/667MHz Digital Audio	0MB	1MB DDR SDRAM	520
iMac 1GHz (167MHz, 768MB, GF4MX 32MB)	256k	0MB	473
PB G4 17" 1.33GHz (167MHz, 512MB, R9600 64MB)	512k On Chip	0MB	305
PM G4/2x 1.25GHz FW800	256k	2x1MB DDR SDRAM	266
PM G4/2x 1.42GHz FW800	256k	2x2MB DDR SDRAM	238
PM G5/1.6GHz (800MHz Frontside Bus)	512k On Chip	0MB	228
PM G5/1.8GHz (900MHz Frontside Bus)	512k On Chip	0MB	195
PM G5/2x 2.0GHz (1GHz Frontside Bus)	512k On Chip	0MB	158

Acceleration Cards

OWC Mercury Extreme G4/800MHz	256k	2MB SPB SRAM	438
Sonnet Encore/ST G4/800MHz	256k	2MB DDR SRAM	412
OWC Mercury Extreme G4/1GHz	256k	2MB SPB SRAM	369
Sonnet Encore/ST G4/1GHz	256k	2MB DDR SRAM	360
Sonnet Encore/ST G4/1.2GHz	256k	2MB DDR SRAM	312
GigaDesigns G-Celerator G4/1.25GHz	256k	2MB SPB SRAM	311
OWC Mercury Extreme G4/1.25GHz	256k	2MB SPB SRAM	310
OWC Mercury Extreme G4/1.33GHz	256k	2MB DDR SRAM	280
Sonnet Encore/ST G4/1.4GHz	256k	2MB DDR SRAM	277
GigaDesigns G-Celerator G4/1.25GHz @ 1.467GHz	256k	2MB SPB SRAM	274
OWC Mercury Extreme G4/1.467GHz	256k	2MB DDR SRAM	274
PowerLogix PowerForce Dual G4 2x1.2GHz (7457)	512k x2	2MB SPB SRAM x2	288

Time to convert standard CD Audio AIFF files to MP4 AAC 128 bit - Shorter bars are better Total 11 songs 1.2 Hours 758.1MB of music converted. In previous testing I had been converting one track ripped directly off of a CD. It became apparent that the testing was not exactly fair enough in the respect that the CD drive played a big part in the test results. While a CD drive can spin up quite quickly, I eliminated that variable by copying the raw AIFF files to the internal hard drive and converting from there. These results certainly are impressive for any of the G5 systems, that's for sure!