I'm pretty sure my Mac has 64 bit slots. I checked the Apple site for my machine and it states as follows:
Processing and memory
1GHz, dual 1.25GHz, or dual 1.42GHz PowerPC G4 processors
Velocity Engine vector processing unit
Full 128-bit internal memory data paths
Powerful floating-point unit supporting single-cycle, double-precision calculations
Data stream prefetching operations supporting four simultaneous 32-bit data streams
256K on-chip L2 cache running at processor speed
Up to 2MB DDR SRAM L3 cache per processor with up to 4-GBps throughput
Up to 167MHz system bus supporting over 1.3-GBps data throughput
256MB or 512MB of PC2100 (266MHz) or PC2700 (333MHz) DDR SDRAM main memory supporting up to 2.7-GBps throughput
Four DIMM slots supporting up to 2GB of DDR SDRAM using one of the following4:
â€”256MB DIMMs (64-bit-wide, 128- or 256-Mbit)
â€”512MB DIMMs (64-bit-wide, 256-Mbit)
Storage and expansion
Four 3.5-inch hard drive expansion bays
â€”One 7200-rpm Ultra ATA/100 drive preinstalled in standard configurations: 60GB, 80GB, or 120GB5
â€”Support for up to four internal ATA drives (two Ultra ATA/100 and two Ultra ATA/66)
â€”Support for up to four internal SCSI drives (requires third-party solution not offered by Apple)
â€”Support for a combination of internal ATA and SCSI drives (total of four)
One of the following optical drives:
â€”SuperDrive (DVD-R/CD-RW); writes DVD-R discs at 4x speed, reads DVDs at 8x speed, writes CD-R discs at 16x speed, writes CD-RW discs at 8x speed, reads CDs at 32x speed
â€”Combo drive (DVD-ROM/CD-RW); reads DVDs at 12x speed, writes CD-R discs at 32x speed, writes CD-RW discs at 10x speed, reads CDs at 32x speed
â€”Optional Combo drive in second optical drive bay
Four open full-length 64-bit, 33MHz PCI slots
One AGP 4X slot with graphics card installed
Are you suggesting that the speed difference between a 32 & 64 bit card is negligable with say just 1 Raptor 150GB drive?
Do you think that if at a later date I wanted to go RAID 0 with a pair of Raptors I'd be better off with a 64 bit card?
On the subject of the Raptor 150GB HD's , I've noticed that theres 2 models:
WD1500AHFD (Raptor X)
Does anyone know:
1. What the difference is between the two?
2. Which would be better from a gaming point of view?