Memory Accessories
Memory Accessories is mostly memory from before today's DIMM standards: 72-pin SIMMs rated at 60, 70 and 80ns for Compaq Deskpro and early HP systems, DEC SIMMs, ECC, EDO and fast-page modules for older HP servers and workstations, and a cache module for the StorageWorks HSG80 array controller. A handful of Kingston HyperX FURY and Predator DDR4 kits for desktops are listed here too.
Memory Accessories: 185 products
Buying guide
Buying legacy memory
Speed in nanoseconds
SIMMs are rated by access time. A faster module, say 60ns in place of 70ns, generally works; a slower one may not.
Parity and ECC
Older servers and workstations often need parity or ECC SIMMs, while most desktops take non-parity modules. Match what's already installed.
Fast page or EDO
Some systems accept only fast page mode (FPM) memory, others take EDO. Don't mix the two in one bank.
Pairs and banks
Pentium-era systems with a 64-bit memory bus need 72-pin SIMMs installed in matched pairs to fill each bank.
Memory Accessories
Frequently asked questions
What's the difference between a SIMM and a DIMM?
A SIMM's contacts on both sides of the edge connector carry the same signals, while a DIMM uses separate contacts on each side for a wider data path. SIMMs were standard until DIMMs replaced them in the late 1990s.
Will HyperX FURY kits work in an OEM desktop?
Yes, in any desktop that takes unbuffered DDR4. OEM systems that don't support XMP run them at their standard JEDEC speed rather than the rated speed.
