Alternative to TPN8G: Better-Value Equivalents in Stock
Comparing the TPN8G (TPN8G - Dell 155-Watts 100-120V Power Supply for OptiPlex 3240 3440 7440) 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 TPN8G
| SKU | TPN8G |
|---|---|
| Product | TPN8G - Dell 155-Watts 100-120V Power Supply for OptiPlex 3240 3440 7440 |
| Current price | $235.79 |
| Stock status | In Stock |
| Detail page | View TPN8G › |
Alternatives to TPN8G
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.
D155E001L - Dell 155-Watts 100-240V Power Supply for OptiPlex 3240 3440 7440
SKU: D155E001L
Price: $184.21
PS-5221-2DF-LF - Dell 220-Watts 100-120V / 200-240V Power Supply for OptiPlex GX520 GX620
SKU: PS-5221-2DF-LF
Price: $96.84
NC905 - Dell 230-Watts 100-120V/200-240V ATX Power Supply for OptiPlex 210L,Dimension E310/3100
SKU: NC905
Price: $96.84
MC633 - Dell 230-Watts 100-120V/200-240V Power Supply for OptiPlex 210L/GX250,Dimension E310/3100
SKU: MC633
Price: $96.84
VP-09500051-000 - Dell 255-Watts 100-120V Power Supply for Optiplex 360 380 580 760 780 960 MT
SKU: VP-09500051-000
Price: $96.84
F255E-00 - Dell 255-Watts 100-120V Power Supply for Optiplex 360 380 580 760 780 960 MT
SKU: F255E-00
Price: $96.84
KC672 - Dell 220-Watts 100-120V / 200-240V Power Supply with PFC for OptiPlex GX520 GX620 Dimension C521
SKU: KC672
Price: $96.84
PS-6311-1D - Dell 305-Watts 100-120V / 200-240V ATX Power Supply for Optiplex GX260 X270 Precision 360
SKU: PS-6311-1D
Price: $109.03
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.