3040 mt psu upgrade

Question

Does anyone know of any psus higher than 240w that would be compatible with an optiplex 3040 mt without having to use a 24 to 8 pin adapter? Ive seen cases of these adapters not being trustworthy. Thanks.

redxps630 · Answer

OptiPlex XE2 Small Form Factor (SFF) 315-watt proprietary power supply is one potential candidate

Connectors: Proprietary 8-pin motherboard power, 4-pin 12V connector, and a 6-pin GPU power connector

Common Part Numbers (P/N): 4FCWX, H315ES-00, D315ES-00, VX372

Psu connector cross-compatible with Optiplex 3040 MT, OptiPlex 3020, 7020, and 9020 SFF

redxps630 · Answer

The Dell OptiPlex 3040 Mini Tower (MT) 240w power supply unit (PSU) measures 220 x 80 x 60 mm.

The Dell OptiPlex XE2 Small Form Factor (SFF) 315W power supply (models H315ES-00 / D315ES-00) measures 239mm x 72mm x 63mm

redxps630 · Answer

The 315w psu is 3 mm taller and 19 mm longer than 3040 psu. Op needs to make sure there is good clearance in the chassis. 3040 mt is 274 mm in depth.

The mounting screw hole position of 315 w psu doesn’t match 3040 mt psu which is a draw back. User who installs 315w psu need to find a custom way to fasten the psu at bottom of 3040 mt

if op is willing to have psu sitting outside case, then a better option is Optiplex XE2 MT 365 w psu with same compatible connectors.

OptiPlex XE2 Mini Tower (MT) 365-watt power supply unit (PSU) with part numbers like 7VK45, T1M43, HU365EM-00, or D365EM-00

bradthetechnut · Answer

Does the XE2 MT PSU come with PCIe GPU connector?  The 365w PSU for a Precision 3620 does. @Bucket100  What would be the most helpful is to know what GPU card you plan on powering.

Bucket100 · Answer

i appreciate the in depth answer. Thank you very much.

Bucket100 · Answer

@bradthetechnut​  ideally a 1660 super

bradthetechnut · Answer

The 315w XE2 SFF PSU as suggested by redxps is a good bet then.  In an SFF, you might have to look out for heat issues.

Optiplex Desktops

3040 mt psu upgrade

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