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What would be a good choice for a graphics card for a HP DC7900 Windows 10 64bit because of the low power supply?

Here is the specs.....

Any help you can provide would be greatly appreciated.

Edited by MeBryan
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Quick, practical summary tied to the thread: the HP Compaq dc7900 Small Form Factor ships with a 240W internal power supply and a low‑profile chassis, so the safest GPU upgrades are low‑profile, single‑slot cards that draw their power from the PCIe slot (no external 6‑pin). The PCIe x16 slot is generally limited to ~75W of board‑power, so pick cards rated to run from slot power only or explicitly list “no supplemental power.” (manualzilla.com)

Reasonable, compatible choices that respect that limit are the GeForce GT 1030 (very low power, good for video/HTPC and light 3D) or small Quadro models (P400 / P620) which are low‑profile, single‑slot, and specified with low maximum power consumption and no auxiliary connectors — these are common picks when staying inside a 240W SFF budget. Some Pascal-era GeForce models (example: low‑profile GTX 1050/1050 Ti boards) were produced to run from slot power only, but those must be verified on the exact vendor spec sheet (length, bracket, and “power connector: none”) before buying. (techpowerup.com)

Practical checklist and gotchas not covered in the replies: verify the power‑supply label inside the case (confirm 240W and whether a PCIe auxiliary cable exists), measure clearance for card length and height and confirm a low‑profile bracket is included, update the system BIOS if HP has a newer build, and test the card with minimal drives/peripherals installed on first boot. Also be aware some newer cards ship with UEFI‑only vBIOS (no legacy GOP); older OEM BIOS/CSM settings can affect pre‑boot display — if the screen is blank at boot but drivers load in Windows, that may be a vBIOS/UEFI issue to research before returning the card. (newtownspares.com)

Notes: this expands on ’s power‑budget point and gives alternatives to consider; exact vendor model specs (board power, length, bracket) are the deciding factor for any dc7900 SFF install.

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Member Avatar for rproffitt

You didn't reveal what this graphics card is for or what monitor it would be driving.

However I will share my power consumption tests on an old HP dv9000t with the Core2Quad CPU and what it peaked out at with a few cards.
I had tests with the GT 240, 1050 Ti and a 1060.

Numbers are over at https://www.cnet.com/forums/discussions/im-upgrading-some-old-iron-what-would-you-like/

  1. GT 240 was Max: 1.32A or 160W max during tests.
    Idle: .69A or 83W.
  2. The SSD helped too and was Max: 1.15A or 140W max during tests.
    Idle: .58A or 70W.
  3. 1050 Ti was Max: 1.43A or 173W max during tests.
    Idle: .58A or 70W.
  4. GTX 1060 6GB came in at Max:2.07A or 250W max during tests.
    Idle: .60A or 72.6W

All the models noted an 85 plus PSU at 240 Watts so at 85% efficiency your PC's limit would be the GTX 1050 Ti 4GB in some low profile model.
Many will pull back to the 1030 but that would not be suitable for say someone that is trying to game as 1080p 60Hz today.

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