This listing is for a re-purposed Wyse Zx0 retro gaming machine with the following specs:
-1.65 GHZ Dual Core AMD T56N Processor
-4 GB DDR3 RAM (512mb of which is allocated to video ram)
-16 GB Solid State Hard drive (44-pin IDE vertical DOM)
-Radeon HD 6320 Graphics
-DVI, DP, and VGA (over adapter) video outputs
-AMD Azalia (Intel HD) Audio
-Realtek Ethernet Adapter
-4x USB 2.0 ports (2 front, 2 rear) and 2x USB 3.0 ports (rear)
-2 Serial Ports
-1 Parallel Port
-Dedicated PS/2 keyboard port
-Built-in PC speaker (Windows audio routes over this when no speaker is connected)

Windows XP configuration:
-All hardware drivers installed
-Daemon Tools v3.47 installed for mounting ISO's as virtual CD drives
-Chrome v49
-Framework: .net 2.0
-Visual C++ 2005, 2008, and 2010 redistributables
-DirectX 9.0c

Includes the following:
-Computer
-Power Supply
-DVI to VGA adapter

About this build:
This thin client boasts a 3dMark03 score of 6975 which is more than 2x higher than even my Wyse build that has a dedicated Radeon x600 graphics card.  For a thin client, this thing packs a lot of punch, thanks to its Radeon HD 6320 graphics chip, its 4GB of DDR3 ram, and its dual core AMD CPU.  It measures only 9x8x2 inches.  If you're looking specifically for a thin client for playing some old Windows XP games, this is the one to get, hands-down.  Moreover, it has a fair number of legacy ports including dual Serial ports, a Parallel port, and a PS/2 keyboard port.

Benchmarks:

3dMark 2001
11,000 Overall
164 FPS - Car Chase (Low)
41 FPS - Car Chase (High)
219 FPS - Dragothic (Low)
124 FPS - Dragothic (High)
142 FPS - Lobby (Low)
62 FPS - Lobby (High)
62 FPS - Nature

3dMark 2003
6,975 Overall
145 FPS - Wings of Fury
53 FPS - Battle of Proxycon
44 FPS - Troll's Lair
50 FPS - Mother Nature