Alternative to 500656-S21: Better-Value Equivalents in Stock
Comparing the 500656-S21 (500656-S21 - HP 2GB DDR3-1333MHz PC3-10600 ECC Registered CL9 240-Pin DIMM 1.35V Low Voltage Dual 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 500656-S21
| SKU | 500656-S21 |
|---|---|
| Product | 500656-S21 - HP 2GB DDR3-1333MHz PC3-10600 ECC Registered CL9 240-Pin DIMM 1.35V Low Voltage Dual Rank Memory Module |
| Current price | $93.36 |
| Stock status | In Stock |
| Detail page | View 500656-S21 › |
Alternatives to 500656-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.
500656-B21N - HP 2GB DDR3-1333MHz PC3-10600 ECC Registered CL9 240-Pin DIMM 1.35V Low Voltage Dual Rank Memory Module
SKU: 500656-B21N
Price: $93.36
500656-B21 - HP 2GB DDR3-1333MHz PC3-10600 ECC Registered CL9 240-Pin DIMM 1.35V Low Voltage Dual Rank Memory Module
SKU: 500656-B21
Price: $93.36
500656-B24 - HP 2GB DDR3-1333MHz PC3-10600 ECC Registered CL9 240-Pin DIMM Dual Rank Memory Module
SKU: 500656-B24
Price: $93.36
500656-B22 - HP 2GB DDR3-1333MHz PC3-10600 ECC Registered CL9 240-Pin DIMM Dual Rank Memory Module
SKU: 500656-B22
Price: $93.36
500656-B23 - HP 2GB DDR3-1333MHz PC3-10600 ECC Registered CL9 240-Pin DIMM Dual Rank Memory Module
SKU: 500656-B23
Price: $93.36
500656-10G - HP 10GB Kit (5 X 2GB) DDR3-1333MHz PC3-10600 ECC Registered CL9 240-Pin DIMM Dual Rank Memory
SKU: 500656-10G
Price: $120.49
500656-18G - HP 18GB Kit (9 X 2GB) DDR3-1333MHz PC3-10600 ECC Registered CL9 240-Pin DIMM Dual Rank Memory
SKU: 500656-18G
Price: $199.63
500656-14G - HP 14GB Kit (7 X 2GB) DDR3-1333MHz PC3-10600 ECC Registered CL9 240-Pin DIMM Dual Rank Memory
SKU: 500656-14G
Price: $503.24
500656-16G - HP 16GB Kit (8 X 2GB) DDR3-1333MHz PC3-10600 ECC Registered CL9 240-Pin DIMM Dual Rank Memory
SKU: 500656-16G
Price: $700.25
500656-S21-RF - HP 2GB PC3-10600 DDR3-1333MHz ECC Registered CL9 RDIMM Dual-Rank Memory Module
SKU: 500656-S21-RF
Price: $93.36
HP 500656-B21#0D1 2GB PC3-10600 DDR3-1333MHz ECC Registered CL9 RDIMM Dual-Rank Memory Module
SKU: 500656-B21-0D1
Price: $93.36
IMSH2GP02A1F1C-13HP2 - Qimonda 2GB DDR3-1333MHz PC3-10600 ECC Registered CL9 240-Pin DIMM Single Rank Memory Module
SKU: IMSH2GP02A1F1C-13HP2
Price: $66.71
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.