Alternative to 311-5991: Better-Value Equivalents in Stock
Comparing the 311-5991 (311-5991 - Dell 4GB DDR2-667MHz PC2-5300 non-ECC Unbuffered CL5 240-Pin DIMM Dual Rank Memory Module) against alternatives? Pro Disk Network stocks 12 similar Dell 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 311-5991
| SKU | 311-5991 |
|---|---|
| Product | 311-5991 - Dell 4GB DDR2-667MHz PC2-5300 non-ECC Unbuffered CL5 240-Pin DIMM Dual Rank Memory Module |
| Current price | $328.46 |
| Stock status | In Stock |
| Detail page | View 311-5991 › |
Alternatives to 311-5991
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.
224-5991 - Dell 2.2GHz 2400MHz HLT 6MB L3 Cache Socket Fr6(1207) AMD Opteron 2427 6-Core Processor
SKU: 224-5991
Price: $113.59
311-7154 - Dell 8GB Kit (2 X 4GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM 1.8V Memory
SKU: 311-7154
Price: $65.26
311-7894 - Dell 32GB Kit (8 X 4GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM Single Rank Memory
SKU: 311-7894
Price: $165.76
311-6393 - Dell 8GB Kit (2 X 4GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM 1.8V Memory
SKU: 311-6393
Price: $242.58
311-6960 - Dell 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Dual Rank Memory
SKU: 311-6960
Price: $257.30
311-7447 - Dell 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 non-ECC Unbuffered CL5 200-Pin SoDimm Memory for XPS M1730
SKU: 311-7447
Price: $257.30
311-6254 - Dell 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Dual Rank Memory for PowerEdge
SKU: 311-6254
Price: $257.30
311-7462 - Dell 4GB Kit (2 X 2GB) DDR2-667MHz PC2-5300 ECC Fully Buffered CL5 240-Pin DIMM Dual Rank Memory
SKU: 311-7462
Price: $257.30
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.