Alternative to 500660-S21: Better-Value Equivalents in Stock
Comparing the 500660-S21 (500660-S21 - HP 4GB DDR3-1066MHz PC3-8500 ECC Registered CL7 240-Pin DIMM 1.35V Low Voltage Quad Rank Memory Module) against alternatives? Pro Disk Network stocks 12 similar HP parts that offer comparable performance at different price points. Each option below is in-stock, US-warehoused, and tested-and-certified before ship. Bulk pricing is available on quantities of 5+; B2B procurement can use Net 30 with PO.
About the 500660-S21
| SKU | 500660-S21 |
|---|---|
| Product | 500660-S21 - HP 4GB DDR3-1066MHz PC3-8500 ECC Registered CL7 240-Pin DIMM 1.35V Low Voltage Quad Rank Memory Module |
| Current price | $90.28 |
| Stock status | In Stock |
| Detail page | View 500660-S21 › |
Alternatives to 500660-S21
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
500660-B21 - HP 4GB DDR3-1066MHz PC3-8500 ECC Registered CL7 240-Pin DIMM 1.35V Low Voltage Quad Rank Memory Module
SKU: 500660-B21
Price: $71.58
500660-12G - HP 12GB Kit (3 X 4GB) DDR3-1066MHz PC3-8500 ECC Registered CL7 240-Pin DIMM 1.35V Low Voltage Quad Rank Memory
SKU: 500660-12G
Price: $432.51
500660-16G - HP 16GB Kit (4 X 4GB) DDR3-1066MHz PC3-8500 ECC Registered CL7 240-Pin DIMM 1.35V Low Voltage Quad Rank Memory
SKU: 500660-16G
Price: $571.53
500204-061 - HP 4GB DDR3-1066MHz PC3-8500 ECC Registered CL7 240-Pin DIMM 1.35V Low Voltage Quad Rank Memory Module
SKU: 500204-061
Price: $71.58
501535-001 - HP 4GB DDR3-1066MHz PC3-8500 ECC Registered CL7 240-Pin DIMM 1.35V Low Voltage Quad Rank Memory Module
SKU: 501535-001
Price: $71.58
591749R-071 - HP 4GB DDR3-1066MHz PC3-8500 ECC Registered CL7 240-Pin DIMM 1.35V Low Voltage Dual Rank Memory Module
SKU: 591749R-071
Price: $90.28
595422R-001 - HP 4GB DDR3-1066MHz PC3-8500 ECC Registered CL7 240-Pin DIMM 1.35V Low Voltage Dual Rank Memory Module
SKU: 595422R-001
Price: $90.28
595422-001 - HP 4GB DDR3-1066MHz PC3-8500 ECC Registered CL7 240-Pin DIMM 1.35V Low Voltage Dual Rank Memory Module
SKU: 595422-001
Price: $90.28
500600-B21 - HP 4GB DDR3-1066MHz PC3-8500 ECC Registered CL7 240-Pin DIMM 1.35V Low Voltage Quad Rank Memory Module
SKU: 500600-B21
Price: $90.28
591749-071 - HP 4GB DDR3-1066MHz PC3-8500 ECC Registered CL7 240-Pin DIMM 1.35V Low Voltage Dual Rank Memory Module
SKU: 591749-071
Price: $90.28
How we pick alternatives
Every recommendation above was selected using these criteria:
- Spec parity — capacity, speed, port count, and form factor matched within a 10% tolerance
- Price spread — alternatives shown across the price range, so you can pick on budget
- Brand mix — both OEM-equivalent and trusted aftermarket, all certified
- Reliability data — preferred parts have failure rates below 1% in our 18-month return tracking
- In stock today — shipping today, not 4-6 weeks from now
Want a side-by-side spec comparison?
We can prepare a written comparison covering throughput, power draw, form factor and validated compatibility. Email sales@prodisknetwork.com or call +1 (407) 205-8454 — most quotes ship within 4 business hours.