Welcome to the short and succint guide to the HP Elite t755 thin client
(Also known by HP internal codename Puffin)
So why should you care (as a home labber)?
It's a large-ish thin client, roughly in the dimensions of 210mm W x 210mm H x 50 mm D, ~2.20 Liters, released in Q4 2023, GA in Q1 2024.
The HP t-series thin clients are about as close as AMD got to releasing an intel NUC competitor, and on their big expandable clients (t620 Plus, t730, t740, t755) you are offered an AMD NUC but with a PCIe 3.0 x16 slot (of which x8 are populated)
Laissez les bon temps rouler!
In the t755 Elite, you have a Ryzen embedded APU from the AMD Grey Hawk family, which offers good performance, low power usage/noise levels combined with one thing that most AMD TMMs didn't have - a full size low form factor PCIe x16 slot, which opens up some good possibilities. Even at the currently inflated retail pricing (as of Q2 2026 - about 700 USD for a base model) the t755 can still be often had for about 1-200 USD.
In the t740, you can expect hardware SRIOV/passthrough support in Linux (which is an exciting feature), and for once the PCIe ARI forwarding was enabled. That might be sufficient for very useful microserver functionalities. There are still some flaws...
How much CPU and GPU firepower can I expect from one?
The Ryzen V2546 has a CPU configuration of 6 cores, 12 threads on a 7nm lithography process. The CPU performance is slightly above a Ryzen 5 4600H and outpaces the Core i5-11500H.
The Radeon Graphics 384SP Mobile embedded GPU onboard has 6 Vega Compute Units arranged in a 386 Unified Shader: 8 Render Output Unit: 24Texture Mapper Unit configuration. Raw GPU horsepower is about 2300 FP16 Gigaflops.
Base configuration as shipped is 8GB of RAM in 2 DDR4 DIMMs, and 64GB tp 128 of eMMC in the NVMe/eMMC M.2 slot. The SATA M.2 is usually empty but a retaining screw is included.
Base OS is HP ThinPro (a variant of Ubuntu Linux) or Windows 11 IoT edition x64.
What’s my path to expandability?
• 2 DDR4 Notebook RAM slots (supporting up 64 GB via a pair of 32GB DDR4 SODIMMs)
• 3 M.2 slots -
- Key E (Wireless, or PCIe x1)
- Key M (NVMe/eMMC)
- Key B+M (SATA)
• 2 USB3.1 ports in the back, 2 USB 2.0 ports (at an angle in the back), 2 USB 3.1 ports in the front, one USB 3.1 type C port up front
• One PCIe 3.0 x16 small form factor slot, 75 Watt max (although that has not been 100% documented so I'll be wary about anything over, say, 50w)
Upgrade Compatibility with the t740
The following bas been tested and known to work:
• Intel i340-T4 Quadport GigE cards
• SolarFlare SFN5122F 10GbE card
• SolarFlare SFN7122F 10GbE card
• Mellanox ConnectX3 VPI 40GbE/Infiniband adapter (MCX354A-FCBT)
The following bas been tested and known to NOT work due to lack of BAR resizing support:
• AMD Radeon Pro V620 cards
• AMD Radeon Pro V340L cards
Is there a guide to working inside the chassis?
Check their user guide.
What does the power usage look like?
(All figures assume 2x32GB DDR4-2666 SODIMM, 512GB m.2 SATA SSD, a Mellanox ConnectX3 VPI Dual 40/56GBit NIC/IB HBA) and a Zooz ZST10 Z-Wave controller hub connected
Vampire Draw (powered off and connected to the wall): 2w.
Idling, Proxmox VE 9.2, no VMs running, 14w
Idling, Windows 10 Pro driving a 1080p screen via HDMI, 15-22w
Idling, Proxmox VE 9.2, 4 VMs running, 3 with 2 VFs assigned - 20w
Windows 11 Pro playing Super Mario Galaxy within Dolphin, 2x native resolution, 1x MSAA: 41-45w
WIndows 11 Pro playing 4k VP9 via Google Chrome + Youtube: 42-49w
Fully stressed, Proxmox 6.2, stress-ng -c 30 -vm-bytes 1G -m 60, and 3 VMs running, each with two SRIOV SFs: 84-87w
OS Compatibility with the t755
The following has been tested and known to work:
Proxmox 7 and up
VMWare ESXi 6.5U3/6.7/7.0 (requires custom ISO for Realtek NIC)
Windows 11 IoT/Pro
Debian Linux 13/14
How much am I expected to pay for one?
As of Q2 2026, about 1-200 USD for a used unit, but RAM/NAND pricing will be critical for economic performance. Raid those old laptop parts bins, people!
Advantages
• No IPMI, and no VPro (AMD DASH seems to be limited to Windows clients only)
• Only 2 DDR4 Notebook DIMM slots (64GB is the max, so about the same as the Intel "Lake" series)
• Need a 90w HP power brick, HP 4.5mm blue-ring-tip Notebook power plug and cannot be modded to run USB-PD like the t640/t655 series
• The default NIC is a Realtek GigE model, and they are known until recently for some truly crapulent showstopping drivers (and no native driver support in ESXi)
• Almost as loud as the t740
• Zen2 heartbleed mitigation also extracts its pound of flesh
• No BAR resizing so you can't use it to drive more modern dGPUs via direct connect or OCulink
• Due to the way how the Renoir iGPU/security processor complex was wired up, iGPU passthrough also not really a thing
• The Vega 6 iGPU onboard is GCN5.1/VCN2 design (this is before RDNA2/RDNA3). If you plan to use it as an HTPC box, remember that it'll decode H264/H265 (HEVC) at up to 4k, and VP9 is only assisted decoding. H264/H265 encoding is...not that great.The Vega iGPU is good for its time but the RDNA2/RDNA3 based Navi iGPUs beat it in almost all tasks (both gaming, video playback and inferencing)
So, what can I do with it?
- Use it as a thin client.
You can drive up to 4 LCDs in 4k resolution, so at the very least you can use Synergy to connect to multiple desktops. HP ThinPro out of the box can support various protocols like VNC, RDP, VNC RGS, NoMachine NX or Cendio ThinLinc. USB remote access is supported so you can in theory setup a remote VM in KVM and remotely connect USB and audio to it via the SPICE protocol.
So yes. Use it to drive multiple screens - delight friends, intimidate enemies.
- Run a “much more powerful” firewall.
Many people here swears by the t620 Plus, but if you have some serious packet filtering, you could in theory toss in a dual port 1/10/40GbE card on the t755, toss up a virtual function or 2 via SRIOV to accelerate throughput, and work successfully with higher line speeds.
- Solid performance expandable hypervisor.
About as good as an Alder-Lake i5-U but more efficient.
- Use it as an HTPC or as a living room PC.
It's about ~60% bigger than a Mac Mini (1.4 L for a Unibody or USB-C MacMini, versus 2.2 L for the t740), but you get expandable RAM, storage (in 2 m.2 slots) and a PCIe x16 slot. Add a 10/40GbE card, run some singlemode fiber to a 10/40GbE NAS, and you can have the world's best equipped HTPC, and it can play h264/h265/VP9 and any older format just fine. You want something smaller? There's the t640, and it's 1.4 L. Only 1 M.2 SATA slot (unverified) though, and no PCIe x16 slot. But you can use the fiber NIC from the t730 on the t640.
- You can do some moderate gaming on it...although for the same money, you can score an AMD BC-250 board and have a ton of fun with it.
Are there similar products out in the market today?
Kinda - I would recommend a Zen4 based Phoenix / Hawk Point APU as a mid-term investment (like a Minisforum X1 or N5 Air) if you want chassis bang for the buck, but unless you lucked out on the DDR5 SODIMM buys prior to the steep RAM/NAND price increases, you are better off with a Renoir machine and its DDR4 requirements.
Are there active discussion on STH for this device?
KInda...?
(Also known by HP internal codename Puffin)
So why should you care (as a home labber)?
It's a large-ish thin client, roughly in the dimensions of 210mm W x 210mm H x 50 mm D, ~2.20 Liters, released in Q4 2023, GA in Q1 2024.
The HP t-series thin clients are about as close as AMD got to releasing an intel NUC competitor, and on their big expandable clients (t620 Plus, t730, t740, t755) you are offered an AMD NUC but with a PCIe 3.0 x16 slot (of which x8 are populated)
Laissez les bon temps rouler!
In the t755 Elite, you have a Ryzen embedded APU from the AMD Grey Hawk family, which offers good performance, low power usage/noise levels combined with one thing that most AMD TMMs didn't have - a full size low form factor PCIe x16 slot, which opens up some good possibilities. Even at the currently inflated retail pricing (as of Q2 2026 - about 700 USD for a base model) the t755 can still be often had for about 1-200 USD.
In the t740, you can expect hardware SRIOV/passthrough support in Linux (which is an exciting feature), and for once the PCIe ARI forwarding was enabled. That might be sufficient for very useful microserver functionalities. There are still some flaws...
How much CPU and GPU firepower can I expect from one?
The Ryzen V2546 has a CPU configuration of 6 cores, 12 threads on a 7nm lithography process. The CPU performance is slightly above a Ryzen 5 4600H and outpaces the Core i5-11500H.
The Radeon Graphics 384SP Mobile embedded GPU onboard has 6 Vega Compute Units arranged in a 386 Unified Shader: 8 Render Output Unit: 24Texture Mapper Unit configuration. Raw GPU horsepower is about 2300 FP16 Gigaflops.
Base configuration as shipped is 8GB of RAM in 2 DDR4 DIMMs, and 64GB tp 128 of eMMC in the NVMe/eMMC M.2 slot. The SATA M.2 is usually empty but a retaining screw is included.
Base OS is HP ThinPro (a variant of Ubuntu Linux) or Windows 11 IoT edition x64.
What’s my path to expandability?
• 2 DDR4 Notebook RAM slots (supporting up 64 GB via a pair of 32GB DDR4 SODIMMs)
• 3 M.2 slots -
- Key E (Wireless, or PCIe x1)
- Key M (NVMe/eMMC)
- Key B+M (SATA)
• 2 USB3.1 ports in the back, 2 USB 2.0 ports (at an angle in the back), 2 USB 3.1 ports in the front, one USB 3.1 type C port up front
• One PCIe 3.0 x16 small form factor slot, 75 Watt max (although that has not been 100% documented so I'll be wary about anything over, say, 50w)
Upgrade Compatibility with the t740
- RAM: Yep - the t755 Elite requires DDR4, same as the previous "4" series.
- PCIe Key M (NVMe/eMMC) - Works fine
- PCIe Key B+M (SATA): Works fine
- PCIe Key E slot - the old fiber cards will not fit, and as for the Wifi....you'll need to figure out how to run the antennas if it's not included in your particular SKU
- PCIe 3.0 x16 slot - should work for the most part.
The following bas been tested and known to work:
• Intel i340-T4 Quadport GigE cards
• SolarFlare SFN5122F 10GbE card
• SolarFlare SFN7122F 10GbE card
• Mellanox ConnectX3 VPI 40GbE/Infiniband adapter (MCX354A-FCBT)
The following bas been tested and known to NOT work due to lack of BAR resizing support:
• AMD Radeon Pro V620 cards
• AMD Radeon Pro V340L cards
Is there a guide to working inside the chassis?
Check their user guide.
What does the power usage look like?
(All figures assume 2x32GB DDR4-2666 SODIMM, 512GB m.2 SATA SSD, a Mellanox ConnectX3 VPI Dual 40/56GBit NIC/IB HBA) and a Zooz ZST10 Z-Wave controller hub connected
Vampire Draw (powered off and connected to the wall): 2w.
Idling, Proxmox VE 9.2, no VMs running, 14w
Idling, Windows 10 Pro driving a 1080p screen via HDMI, 15-22w
Idling, Proxmox VE 9.2, 4 VMs running, 3 with 2 VFs assigned - 20w
Windows 11 Pro playing Super Mario Galaxy within Dolphin, 2x native resolution, 1x MSAA: 41-45w
WIndows 11 Pro playing 4k VP9 via Google Chrome + Youtube: 42-49w
Fully stressed, Proxmox 6.2, stress-ng -c 30 -vm-bytes 1G -m 60, and 3 VMs running, each with two SRIOV SFs: 84-87w
OS Compatibility with the t755
The following has been tested and known to work:
Proxmox 7 and up
VMWare ESXi 6.5U3/6.7/7.0 (requires custom ISO for Realtek NIC)
Windows 11 IoT/Pro
Debian Linux 13/14
How much am I expected to pay for one?
As of Q2 2026, about 1-200 USD for a used unit, but RAM/NAND pricing will be critical for economic performance. Raid those old laptop parts bins, people!
Advantages
- Even more performant than the t740 - Zen2/Renoir based, so it runs better
- Quad DisplayPort support coupled with an okay Vega Gen 2 6 Mobile GPU
- Nearly silent with a single general purpose fan
- Low profile PCIe x16 slot
- Both NVMe and SATA are present
- AMD-vi, HSA and SRIOV support baked into the BIOS
- Professional looking and can be made rather inconspicuous with the HP under-desk thin client mounting kit
• No IPMI, and no VPro (AMD DASH seems to be limited to Windows clients only)
• Only 2 DDR4 Notebook DIMM slots (64GB is the max, so about the same as the Intel "Lake" series)
• Need a 90w HP power brick, HP 4.5mm blue-ring-tip Notebook power plug and cannot be modded to run USB-PD like the t640/t655 series
• The default NIC is a Realtek GigE model, and they are known until recently for some truly crapulent showstopping drivers (and no native driver support in ESXi)
• Almost as loud as the t740
• Zen2 heartbleed mitigation also extracts its pound of flesh
• No BAR resizing so you can't use it to drive more modern dGPUs via direct connect or OCulink
• Due to the way how the Renoir iGPU/security processor complex was wired up, iGPU passthrough also not really a thing
• The Vega 6 iGPU onboard is GCN5.1/VCN2 design (this is before RDNA2/RDNA3). If you plan to use it as an HTPC box, remember that it'll decode H264/H265 (HEVC) at up to 4k, and VP9 is only assisted decoding. H264/H265 encoding is...not that great.The Vega iGPU is good for its time but the RDNA2/RDNA3 based Navi iGPUs beat it in almost all tasks (both gaming, video playback and inferencing)
So, what can I do with it?
- Use it as a thin client.
You can drive up to 4 LCDs in 4k resolution, so at the very least you can use Synergy to connect to multiple desktops. HP ThinPro out of the box can support various protocols like VNC, RDP, VNC RGS, NoMachine NX or Cendio ThinLinc. USB remote access is supported so you can in theory setup a remote VM in KVM and remotely connect USB and audio to it via the SPICE protocol.
So yes. Use it to drive multiple screens - delight friends, intimidate enemies.
- Run a “much more powerful” firewall.
Many people here swears by the t620 Plus, but if you have some serious packet filtering, you could in theory toss in a dual port 1/10/40GbE card on the t755, toss up a virtual function or 2 via SRIOV to accelerate throughput, and work successfully with higher line speeds.
- Solid performance expandable hypervisor.
About as good as an Alder-Lake i5-U but more efficient.
- Use it as an HTPC or as a living room PC.
It's about ~60% bigger than a Mac Mini (1.4 L for a Unibody or USB-C MacMini, versus 2.2 L for the t740), but you get expandable RAM, storage (in 2 m.2 slots) and a PCIe x16 slot. Add a 10/40GbE card, run some singlemode fiber to a 10/40GbE NAS, and you can have the world's best equipped HTPC, and it can play h264/h265/VP9 and any older format just fine. You want something smaller? There's the t640, and it's 1.4 L. Only 1 M.2 SATA slot (unverified) though, and no PCIe x16 slot. But you can use the fiber NIC from the t730 on the t640.
- You can do some moderate gaming on it...although for the same money, you can score an AMD BC-250 board and have a ton of fun with it.
Are there similar products out in the market today?
Kinda - I would recommend a Zen4 based Phoenix / Hawk Point APU as a mid-term investment (like a Minisforum X1 or N5 Air) if you want chassis bang for the buck, but unless you lucked out on the DDR5 SODIMM buys prior to the steep RAM/NAND price increases, you are better off with a Renoir machine and its DDR4 requirements.
Are there active discussion on STH for this device?
KInda...?