Main Rig
Gigabyte mobo
I-5 2500K
16Gb G.Skill Ram
Msi 970Gtx 100ME
Antec 900 modded case
1000 watt psu
Samsung 250gb SSD
1tb WD blue hard drive
Crossover 2795 27" 1440P OC to 96Hz
Evga Torq X5 mouse, CM storm quickfire Tk and Razer Tartarus keypad
W7
 
Music recording Rig
Gigabyte GA-78LMT-USB3
CPU- AMD FX 4130 Black edition 3.8 Quad Core
Ram- 8 gigs Crucial Ballistix
PSU- Apevia 500w with black sleeved cables
GPU- Asus 8400 GS passive
Modded Thermaltake V21 case
Dual screen 1080P 27" and 24"
W7
http://forums.evga.com/Pr...FINISHED-m2395781.aspx
 
HTPC
Old 775 build with E6850
4 gigs of ram
Evga 430gt
4 tb of hds
going to a 100" projector
W7
 
Bedroom computer
Another old 775 build
E8400
4 gigs ram
500gb hd
W7
Craptop 1
Pavillion G7 I-3
4gb ram
W10
 
Craptop 2
Some Dell AMD turd
 
Tablets
Asus Tf300
and Samsung Galaxy
 
3 or 4 old desktops that may or may not work but they are currently in use as they are acting a shelves for paperwork. LOL
 
and then I have a Raspberry Pi in the garage for watching movies/music on the treadmill and working out.
 
 
 

Main rig is in signature.  Below is what I actively use - I have probably another 4 desktops, 2 laptops, and 2 servers (PE R710 and TS140) sitting around unused...  Not to mention the amount of spare parts to build another 2-3 machines!  Maaaan I need to do cleaning!
 
HTPC
Lenovo M93p Tiny
i5-4570T
8GB Ram
500GB SSHD
Windows 10 Pro
 
Laptop1
Asus N53SN
i7-2670QM
GT 550M - 2GB
8GB RAM
Samsung 830 128GB SSD
Windows 10 Pro
 
Laptop2
Lenovo Thinkpad T540p
i7-4600M
GT 730M - 1GB
16GB RAM
240GB Intel SSD
Windows 10 Pro
 
Tablet (Used with USB OTG cable for car alarm / remote start programming and OBD2 diagnostics)
Dell Venue 8 Pro
Atom Z3740 Quad
2GB RAM
32GB SSD
Windows 8.1 Pro
 
File/Media Server (soon to be decommissioned)
Dell Poweredge R710
2x Xeon X5660
32GB ECC RAM
PERC H700 RAID
2x450GB 15K SAS RAID1 OS Drives + 4x2TB 7.2K RAID5 storage drives
VMWare ESXi 6.0 -- W2012R2 / pfSense / Ubuntu

main rig
NZXT switch 810
Dell 2560x1440p 144hz gsync
i5 6600k 4.3ghz
Gskill 16gb 3200mhz
gigabyte Z170X G6
eVga 1080SC
corsair 1000wt psu
noctua cpu cooler
corsair force gt 180gb
WD 500gb storage
WD 300gb velociraptor
 
spare rig
NZXT 810 FULL TOWER
EVGA 970SC GPU
ASUS Z77 SABERTOOTH MOTHERBOARD
I5 3570K CPU
G SKILL SNIPER 16GB 1866GHZ RAM
CORSAIR H80 LIQUID CPU COOLER
CORSAIR 1000 WT PSU
CORSAIR FORCE 120GB SSD
LG DVD/BLUERAY BURNER
FAN CONTROLLER
WINDOWS 7 HOME 64BT

My main computer:
 
Asus X99-A
Intel i7 5820K
CoolerMaster Hyper 212 EVO
EVGA GTX 1080 ACX 3.0
512 GB Samsung Pro SSD (C)
4 TB Toshiba 7200 rpm HDD (D)
32 GB of GSkill DDR4-2400
Thermaltake Overseer RX-1 Case
Corsair HX 850i PSU
Two Pioneer BDR-2209 Blu Ray Burners
Windows 10 Professional
 
Secondary Computer
 
MSI X99S SLI Krait Edition
Intel i7 5820K
CoolerMaster Hyper 212 EVO
500 GB Samsung 850 EVO  (C)
1TB Western Digital "Black" (D)
16 GB of GSkill DDR4-2400
Antec Eleven Hundred Case
Corsair HX 850 PSU
Pioneer BDR-208
Windows 10 Professional
 
Laptop
 
MSI PE70 Prestige (PE70 6QE)
Intel HM170 Chipset / Intel i7 6700 HQ Quad Core
MSI GTX 960M / Intel HD 530 Graphics
Samsung MZNLN256HCHP-000L7  256 GB M.2 drive (C)
HGST 1 TB 7200 rpm HDD (D)
16 GB Samsung DDR4-2133
HL-DT-ST DVD-R / RAM
Samsung SE-506 External BD-R
 
 
 
 

These are always fun :)
 
Main:
Asrock X58 Extreme
X5690 stock
6Gb Mushkin cl7.7.7.21 1333MHz 1.5-1.6v
0db EVGA GeForce GT 210
Samsung 840 Pro SSD
OCZ Vertex2 SSD
8 x Samsung 1Tb F3 on an Asus Power strip for easy On/Off switching
Asus VG278H
Steelseries 6Gv2 Cherry MX Blacks
MS Sidewinder X3
2009 Seasonic X650w Gold
ABS Black Pearl
 
Gaming Rig:
to be filled out later
 

my main rig is in sig, others:
Wife-Gigabyte H97N-WIFI, i3-4160 @3.4Ghz, 8GB Kingston Hyper Fury X, EVGA 550 G2, 1TB Seagate Barracuda HD 7200 rpm, Case: Apevia Trooper x Junior
Daughter- Gigabyte H97M-HD3, i5-4460 @ 3.2Ghz, 8 GB Kingston Hyper Fury X, Corsair 600 CS, Gigabyte GTX 970 G1 Gaming, 1TB WD HD 7200 rpm, Case: DIYPC GamerX (painted purple and yellow)
Son- Gateway junk from box store (purchased before I became aware of custom machines)
and enough parts to build 2 or 3 machines

Adding mine to the mix!
Game room PCs:
Main Rig:
2 x Intel^® Xeon™ E5-2680 C2 stepping (2.7Ghz/3.4GHz, Octa Core) @ 2 x Antec H600 Pro AIO
Asus Z9PE-D8 WS
Gigabyte GTX1080 G1 Gaming
Anidees AI-Crystal
64GB GSkill Ripjaws 1600Mhz (8x8GB configuration)
      - Samsung SSD 250GB EVO 850 (System, Windows10 Pro)
      - Samsung SSD 250GB EVO 850 (System, Kubuntu 16.04.1 LTS)   
      - Mushkin Chronos Deluxe SSD 60GB (Kubuntu 16.04.1 LTS Swap Drive)
      - LSI SAS 9207-8I PCIEx8 HBA
                    - 4 x Samsung SSD 250GB EVO 850 RAID 0 (Windows10 Games)
      - Samsung Spinpoint 1TB HDD (Backup files)
ASUS Xonar DX pcie 7.1 soundcard
Corsair AX1200 PSU
 
Router/Download Server PC/AP point:
Embedded Intel^® Celeron™ J1900 (2.0 GHz/2.42GHz, Quad Core) @ passive heatsink
Gigabyte GA-J1900N-D3V
8 GB DDR3 Kingston HyperX Impact SODIMM (2x4 configuration, 1600MHz)
2 x ADATA S510 120GB SSD @ Raid0 (System, Zentyal OS)
picoPSU (120W)
mSata Wifi Card @ dual 12dbi antennas
Lian Li PC-Q10WX
 
NAS server:
HP Microserver G7 N54L
Embedded  AMD Turion II Model Neo N54L (1600MHz, Dual Core)@ Embedded GPU
8 GB DDR3 1600MHz (2x4 configuration)
     mSata 64GB SSD (System, Open Media Vault)
     2 x Seagate ST4000DM000 HDDs (5900rpm, 4TB @ Raid1)
     Seagate 7200rpm 3TB
 
Living Room PC:
HTPC:
Intel^® Core™ i7-4770T (2.7GHz/3.7GHz, Quad Core) @ passive
Streacom FC8B EVO case
Gigabyte H87N-WIFI
8 GB DDR3 Kingston (2x4 configuration, 1600MHz)
Sandisk 64GB SSD (System, Kubuntu OS)
picoPSU (150W)
 
Laptop:
Schenker w504
Intel^® Core™ i7-4810QM (2.8GHz/3.8GHz, Quad Core)
24GB DDR3 RAM SODIMM (2x8, 2x4 configuration)
Nvidia GTX870 GPU
Samsung EVO 840  250GB (System, Windows 7 PRO) 
2 x Samsung EVO 840 mSata 120GB @ Raid0 (games)
Intel Dual Band Wireless-AC7260

I need to take some better pics.
 
 
Main PC:
TT Core P5
i7 5930k @ 4ghz
MSI X99A Gaming 7 mobo
MSI GeForce GTX 980ti
16GB HyperX Predator DDR4 3000
EVGA Supernova G2 1000w PSU
Raijentek Triton 360 AiO (replacing this PoS with a full WC loop next month)
2 x Samsung 850 Evo 500gb SSD
1 x Samsung 950 Pro M.2 512gb
Dell 27" S716DG 2560x1440 144hz GSync monitor
Corsair Vengance K90 keyboard
Windows 10 Home
 
Laptop:
MSI GT72 Pro-211

Main Rig
Intel 5820k 
Corsair H100i
EVGA X99 Classified
16 Gb DATA DDR4 2400
EVGA GTX 1070 ACX 3.0
240GB ADATA SSD
1TB WD Blue
2TB WD black
Phanteks Eclipse P400
Windows 10 Home Edition.
 
2nd Rig 
Intel I5-3330
Asrock Z77 Pro3
EVGA GTX 950
8 GB DDR3 1600
120 GB SSD
500 TB WD Blue
Corsair case 
Windows 10 Home Edition
 
 
 

I currently only run the rig listed in my signature, and an ASUS ROG laptop from 2014 with a core i7 cpu and geforce 860M gpu. I don't recall the model number.
 
I don't often build new rigs. In fact I've only ever built completely new rigs (for myself, I've built some for others) from scratch three times, once in the early 90s, once in the mid 90s, and once again in 2005. What I do is upgrade and rebuild with some new components, but there's hardly ever a "spare rig" left over from a rebuild, since I'm typically adding or replacing components in an existing rig. Sometimes it's just a video card, sometimes I upgrade the mobo/cpu/RAM and use the existing video card, case, psu, hard drive/ssd, blur-ray burner, monitor, etc. Occasionally I've bought a new case and rebuilt the existing machine into it.
 
My current main rig has no components left from my original new build of 2005, but is a direct evolutionary descendant of it. Actually, when I put my 1920x1200 LCD back on my desk as a second monitor, there will be an original component of the 2005 build back in my rig, since I bought that Dell 24" LCD in 2005 for that new build, and replaced it as primary monitor only 3 or 4 months ago with the 28" Monoprice 4K.