Alternative to 815100-B21: Better-Value Equivalents in Stock
Comparing the 815100-B21 (815100-B21 - HP 32GB DDR4-2666 PC4-21300 ECC Registered Dual Rank x4 CL-19 288-Pin 1.2V DIMM 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 815100-B21
| SKU | 815100-B21 |
|---|---|
| Product | 815100-B21 - HP 32GB DDR4-2666 PC4-21300 ECC Registered Dual Rank x4 CL-19 288-Pin 1.2V DIMM Memory Module |
| Current price | $1,349.47 |
| Stock status | In Stock |
| Detail page | View 815100-B21 › |
Alternatives to 815100-B21
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.
815100-K21 - HP 32GB DDR4-2666 MHz PC4-21300 ECC Registered CL19 288-Pin RDIMM 1.2V Memory Module
SKU: 815100-K21
Price: $400.00
815100-H21 - HP 32GB DDR4-2666 MHz PC4-21300 ECC Registered CL19 288-Pin RDIMM 1.2V Memory Module
SKU: 815100-H21
Price: $400.00
HPE 815100-K21#0D1 32GB PC4-21300 DDR4-2666MHz ECC Registered CL19 RDIMM 1.2V Dual-Rank Memory Module
SKU: 815100-K21-0D1
Price: $299.33
815100-S21 - HP 32GB DDR4-2666MHz PC4-21300 ECC-Registered CL19 288-Pin DIMM 1.2V Dual Rank Memory Module
SKU: 815100-S21
Price: $400.00
840758-091 - HP 32GB DDR4-2666 PC4-21300 ECC Registered Dual Rank x4 CL-19 288-Pin 1.2V DIMM Memory Module
SKU: 840758-091
Price: $271.58
850881-001 - HP 32GB DDR4-2666 PC4-21300 ECC Registered Dual Rank x4 CL-19 288-Pin 1.2V DIMM Memory Module
SKU: 850881-001
Price: $331.58
838083-H21 - HP 32GB DDR4-2666 MHz PC4-21300 ECC Registered CL19 288-Pin RDIMM 1.2V Memory Module
SKU: 838083-H21
Price: $299.33
P05590-K21 - HP 32GB DDR4-2666 MHz PC4-21300 ECC Registered CL19 288-Pin RDIMM 1.2V Memory Module
SKU: P05590-K21
Price: $299.33
838083-K21 - HP 32GB DDR4-2666 MHz PC4-21300 ECC Registered CL19 288-Pin RDIMM 1.2V Memory Module
SKU: 838083-K21
Price: $299.33
P05590-H21 - HP 32GB DDR4-2666 MHz PC4-21300 ECC Registered CL19 288-Pin RDIMM 1.2V Memory Module
SKU: P05590-H21
Price: $299.33
876319-081 - HP 8GB DDR4-2666 PC4-21300 ECC Registered Dual Rank x8 CL-19 288-Pin 1.2V DIMM Memory Module
SKU: 876319-081
Price: $184.21
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.