Better timings, the OCZ gold rev. 2 is 2.5-3-3-7 and the kingston is 3-4-4-8.
Also, the OCZ gold rev. 2 is prolly the fastest, most overclockable PC3700 ram available, very good ram.
System on the way:
Antec Sonata Case w/380W PSU
Athlon 64 3200+
MSI K8T Neo-FIS2R
1 GB Mushkin PC3500
Sapphire Radeon 9800PRO
WD Raptor 74 GB