HP EliteDesk 800 G3 SFF – Specs and upgrade options (2024)

Can you upgrade HP EliteDesk 800 G3 SFF to play games?

Yes, you can upgrade HP EliteDesk 800 G3 SFF for gaming with better processors, graphics card, memory, and storage devices.However, like many other business pre-built PCs, this model may have proprietary elements like the power supply, the chassis or the power connector, which can make it difficult for usersto install aftermarket PSUs to support better GPUs. You can also find that there is space constrains inside the chassis, making it difficult to accommodete larger GPU to boost the gaming performance.

Please explore the sections bellow to find ideas and suggestions on how to upgrade HP EliteDesk 800 G3 SFF.

Windows 11 compatibility

No, HP EliteDesk 800 G3 SFF does not meet the Windows 11 hardware requirements. According to Windows 11 specification, all models with Intel 7th Gen CPU or older are not officially supported. Processor with TPM 2.0 and a UEFI Secure boot BIOS is also required in order to upgrade from Windows 10 to Windows 11 through Windows Update.

However, anyone with PC that does not pass the upgrade test can download the official Windows 11 ISO, make a bootable flash drive, and install the OS manually.

GPU upgrade

To upgrade the GPU of OptiPlex 7040 SFF, a low-power, low-profile graphics card must be used. Currently, the most reasonable GPU option is AMD's Radeon RX 6400 low profile.This model has a good price point, delivers decent FPS, and does not require any addtional hardware upgrades.

The low power requirements of this model make it the perfect option for an SFF gamingbuild. The RX 6400 low does not need any additional power from the PSU and can rely solely on the power delivered by the PCIe slot (75W).

GPU upgrade options for HP EliteDesk 800 G3 SFF with the stock180W power supply:

GPUPower consumptionMemoryReq.
RX 6400 Low profile50 W4 GB DDR6Works with no additional hardware changes
GTX 1050 Ti Low profile75 W4 GB DDR5Works with no additional hardware changes
GTX 1650 Low profile75 W4 GB DDR5Works with no additional hardware changes
RTX A2000 Low profile70 W6 GB DDR6
12 GB DDR6
Works with no additional hardware changes

Keep in mind that these low-profile, low-power GPUs can be quite noisy and may run hot when under full load.


The HP EliteDesk 800 G3 SFF supports Gen7 Intel Core technology. The 7th generation of Intel Core processors were introduced in 2016. Named Kaby Lake, they are refresh of the 6th gen architecture with few efficiencies and power improvements and the same 14nm manufacturing process. Kaby Lake introduces a new graphics architecture that improves 3D performance, 4K playback and HDCP 2.2 support. Processors in this generation use LGA 1151 socket and have dual-channel support for DDR4-2400 RAM slots.

Best CPUs for HP EliteDesk 800 G3 SFF upgrade:

ModelCores (Threads)Base frequencyTurbo
Core i5 75004(4)3.4 GHz3.8 GHz
Core i5 76004(4)3.5 GHz4.1 GHz
Core i7 77004(8)3.6 GHz4.2 GHz


HP EliteDesk 800 G3 SFF has four RAM slots and supports dual channel memory configuration. This is sufficient for almost any use case and especially in situations where the workload calls for more RAM.

To cover the needs of your OS, games, and apps, HP EliteDesk 800 G3 SFF supports up to 64 GB of DIMM DDR4-2400 RAM. For office work, home use, and light gaming we recommend 8GB of RAM. For everything else, use 16GB or more.

Faster RAM speeds permit your processor to access the data stored inside the memory faster. This is important for the overall speed of your system. The motherboard of the HP EliteDesk 800 G3 SFF supports RAM speeds of up to 2400 MT/s.

Wi-Fi Support

HP EliteDesk 800 G3 SFF supports Wi-Fi and Bluetooth combo card with the on-board M.2 2230 (Wi-Fi/BT) slot. The card contains a Wi-Fi module that supports various Wi-Fi standards, as well as aBluetooth module. It is small circuit board that is designed to fit into a dedicated slot on the motherboard.

Keep in mind that the card is not always included and you have to install one yourself.

Wi-Fi and Bluetooth wireless adapter upgrades for HP EliteDesk 800 G3 SFF:

WiFi 6E (Gig+) Kit3000 Mbit/s2.4GHz / 5GHzNGFF M.2 A/E Key
Rekong AX2103000 Mbit/s2.4GHz / 5GHzNGFF M.2 A/E Key
Gigabyte GC-Wbax2002400 Mbit/s2.4GHz / 5GHzPCIe
TP-Link Archer TX50E2400 Mbit/s2.4GHz / 5GHzPCIe
TP-Link Archer T9UH1300 Mbit/s2.4GHz / 5GHzUSB 3.0


Ports are important and often people don't think about them when buying a PC. For example, if you don't have enough USB ports, using external devices becomes problematic. Before you buy any system, considering your use case, check the number of external devices you are going to use and plan the number of the extension ports accordingly.

USB ports

The HP EliteDesk 800 G3 SFF comes with ten USB ports in total. Having more USB ports is always better, but also pay attention to the version of those USB ports. Higher version ports support faster transfer speeds. Unfortunately, this model doesn't come with a USB 3.1 port. If you need a faster connection for your peripherals, like external Solid State Drive, you will need to choose another model.

Video ports

The DisplayPort (DP) is the most widely used digital interface for transmitting digital video and audio between display devices and PCs. It is good to see that the HP EliteDesk 800 G3 SFF is featuring a DisplayPort 1.2. The post version is important if you target higher resolutions with high refresh rate. Although, ver. 1.2 is completely fine for most users, if possible, aim for the higher versions DisplayPort.

The HDMI port is another digital video port you can use to connect external display. It has very similar capabilities to the DisplayPort with few exceptions. However, the HP EliteDesk 800 G3 SFF doesn't have one. This is not a problem if there is on-board DisplayPort.

*Please keep in mind in order to use the video ports available through the motherboard, you need a CPU with integrated graphics card. If you have a dedicated GPU, use his ports instead.

SSD storage - M.2 sockets and SATA ports

The SATA port is one of the places where you can connect a stora gedevice. The HP EliteDesk 800 G3 SFF comes with three SATA port(s). Not enough SATA ports might limit your options for additional storage devices. Think about your use case and decide if the SATA ports provided by this model will be sufficient.

HP EliteDesk 800 G3 SFF has also one M.2 socket(s) that supports both PCIe NVMe (PCIe 3.0 x4) and SATA M.2 drives with speed of up to 4 GB/s. This configuration works very well for both gaming and work related tasks.

The M.2 PCIe SSD connector in combination with an NVMe drive allows for higher transfer rates, compared to the old SATA interface. In some situations, NVMe device connected to the M.2 PCIe socket can be more than 5 times faster.

Best PCIe NVMe drives for HP EliteDesk 800 G3 SFF storage upgrade:

ModelForm factor / InterfaceNAND typeDRAM
Samsung 980 PRO SSDM.2/x4 PCIe 4.0/NVMeTLCYes
SAMSUNG 970 EVO PlusM.2/x4 PCIe 3.0/NVMeTLCYes
Western Digital Black SN770M.2/x4 PCIe 4.0/NVMeTLCYes
Kingston A2000M.2/x4 PCIe 3.0/NVMeTLCYes

Power Supply

The HP EliteDesk 800 G3 SFF comes with a 180 Watt PSU. Having a power supply with high power rating is important, especially if you are doing upgrade with addtional components, like dedicated GPU and more HDDs. Will this 180 W be enough, it all depends on your specific use. Please keep in mind that some models might have more than one PSU option. Whenever possible get the most powerful one, as it might make future upgrades easier.


HP EliteDesk 800 G3 SFF – Specs and upgrade options (2024)
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