Alternative to NN493: Better-Value Equivalents in Stock
Comparing the NN493 (NN493 - Dell 305-Watts Mini Tower Power Supply for OptiPlex GX745 Dimension E520) 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 NN493
| SKU | NN493 |
|---|---|
| Product | NN493 - Dell 305-Watts Mini Tower Power Supply for OptiPlex GX745 Dimension E520 |
| Stock status | In Stock |
| Detail page | View NN493 › |
Alternatives to NN493
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.
0P2721 - Dell 160-Watts ATX SFF Power Supply for Dimension 2400C 4600C and OptiPlex GX270 Mini-Tower and OptiPlex GX270 SFF Desktops
SKU: 0P2721
Price: $461.84
OP2721 - Dell 160-Watts ATX SFF Power Supply for Dimension 2400C 4600C and OptiPlex GX270 Mini-Tower and OptiPlex GX270 SFF Desktops
SKU: OP2721
Price: $461.84
P2721 - Dell 160-Watts ATX SFF Power Supply for Dimension 2400C 4600C and OptiPlex GX270 Mini-Tower and OptiPlex GX270 SFF Desktops
SKU: P2721
Price: $461.84
H9073 - Dell Assembly System Fan for Optiplex 320/ 320 Mini-Tower/ 740/ 740 Mini-Tower/ 745/ GX520 DesktopS
SKU: H9073
Price: $73.68
0H9073 - Dell Assembly System Fan for Optiplex 320/ 320 Mini-Tower/ 740/ 740 Mini-Tower/ 745/ GX520 DesktopS
SKU: 0H9073
Price: $106.49
GK929 - Dell 305-Watts 100-240V ATX Power Supply for OptiPlex 740, 745, 755 Tower
SKU: GK929
Price: $304.78
0GK929 - Dell 305-Watts 100-240V ATX Power Supply for OptiPlex 740, 745, 755 Tower
SKU: 0GK929
Price: $304.78
AC240EM-00 - Dell 240-Watts Power Supply for OptiPlex 5040 / 7040 / 9040 Mini Tower
SKU: AC240EM-00
Price: $143.39
0M1C3 - Dell 240-Watts Power Supply for OptiPlex 5040 / 7040 / 9040 Mini Tower
SKU: 0M1C3
Price: $149.47
0F233T - Dell 255-Watts 100-240V Mini Tower Power Supply for OptiPlex 760 960
SKU: 0F233T
Price: $165.79
F233T - Dell 255-Watts 100-240V Mini Tower Power Supply for OptiPlex 760 960
SKU: F233T
Price: $165.79
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.