Witch would be the best configuration for my rigs to sell and or use

Hardware Hub Build a PC
1 
(sorry for spelling dont hate me)

Okay guys heres my builds and i have a few extra parts an cant decide what to do with them. Now, aside from the 3 builds i have an navida 7600gs. So i could crossfire the 6870 & 6850 in build 1, bump the 6670 to build 2 an put in the navida 7600gs in build 3 not sure if im going to sell all of them or keep build 1 and 2 still unsure regardless wont sell till i update all of them to windows 10 (as windows 10 buget gameing pc's) but is my current configueration of the builds optimal or should i switch a few things around?????

build 1 ive spent about 1700 on over the last 3 years
build 2 3 & spares were build for free out of spare parts and people giveing me "borken computers"(just needed hdd wipes) all run perfectly under load and stressed for 24 hours no blue screen!

I also have access to my ( leting 13yo brother barrow so trying to leave alone to be nice) Dell Optiplex 390 mini tower with I-5 and evga 550ti in it because we think the 265 psu is limiting the 550ti (full specs below)

 Build 1

Fx 8120 bulldozer 8 core 3.1 Ghz-3.4 Ghz turbo(CPU)
Cooler master hyper 212+ (Heatsink)
Asus rog crosshair v formula z (MB)
Corsair vengence ddr3 4gb x2 (blue) (8gb RAM)
Gigabyte OC GV-R687OC-1GD Radeon HD 6870 (GPU)
Antec High Current Gamer Series HCG-900 900W (PSU)
OCZ Agility 4 Series 256 GB (SSD)
Western digital 1tb (HDD)
Superwrite master (dvd burner)
Nzxt phantom 410 black (Mid-size tower)
Blue led case fans 120mm x3
ASUS Xonar Essence STX Sound card
Windows 7 professional sp1 64-bit with asus rog theam 

  Build 2

AMD FX 6100 6 core (CPU)
Fx8120's stock cooler (Heatsink)
Asus M5A97 amd 9series chipset (MB)
Kingston ddr3 ram 2gb x4 (8gb RAM)
Sapphire Radeon HD 6850 (GPU)
BFG Tech BFGR650PSU 650W (PSU)
WD10EADS WD Green - 1 TB - (HDD)
Corsair Forge 3 120gb (SSD)
Lightscribe (dvd burner)
Cooler Master Elite 430 - (Mid-size Tower)
Blue led case fans 120mm x4
multi card reader for SD cards
Windows 7 professional sp1 64-bit 

Build 3

AMD Phenom II x4 820 2.8 Ghz (CPU)
stock fx6100 cooler (Heatsink)
Gigabyte ga-78lmt-s2p (MB)
Samsung ddr3 2gb x2 (4gbRam)
Amd his hd 6670
500w psu
320 gb 5400rpm 2.5" Tosheba hdd
dvd burner
Thermaltake V3 Mid tower
Windows 7 professional sp1 64-bit 

 Dell Optiplex 390 mini tower

intel core I-5 2310 2.9ghz
nivida geforce 550 ti
265w psu
500gb HDD
8GB ram
oem motherbored
dvdburner
multi drive for SD cards
Windows 7 professional sp1 64-bit

       spare / unfinished

hp pavilion
intel core 2 quad Q8400 @2.66 Ghz
stock cooler
oem (mb)
multi card reader for SD cards
off brand (2gb Ram)
needs gpu
needs psu
needs hdd
needs dvd

	Acer Aspire M3100-U3401A

AMD Athlon 64 X2 4800+ / 2.4 GHz
oem (mb)
(512mbx3) = 1.5gb or (512mbx2-1gbx1) =2gb ddr2
multi card reader for SD cards
oem psu
acer dvd
needs hdd
needs gpu

	spare parts

sata dvd drive
nvida gforce 8400gs
nvida gforce 7600 gs
80gb hdd 3.5in
160gb hdd 2.5in 5400rpm
gigabyte ga-78lmt-s2p mother bored

2

i think you know which witch. (oh couldn't help myself)

question is why do you ask... since I'm 100% sure you know it...

1) those old one won't sell
2) Maybe those new ones would sell, but what would you use without them....

3

id just use the money to build new ones but still im not sure if crossfire is worth it just to gain some extra money on build 1
when it takes the graphics on build 2 and 3 down quite a bit

4

for those old cards certainly no, those cards are too weak to get anything in first place. Not sure who would buy it, but you could try to sell those old ones... if you need power leave yourself only top 3 builds. rest is garbage.

5

also your right the old acre wont sell ever its just too old thats why i never finished it but im fairly positive the hp would sell if i finished it within the next year or 2

6

no point in getting them to work; you'll loose more money than they are worth or what you'll get...

if you actually put them together (acer) maybe you'll get ~$100 for it - maybe. (if it was me, i'd ask on forums if anyone wants it, if not i'd throw it away or bolt parts to the wall)

7

yeah soo $100 is fine for that pc when i get all my parts for free. i wont be puting money in to any of them
i didnt even spent money for build 2 or 3 everything was given to me for $0.00 the only thing i paid for was build 1

8

still its not a guarantee that you'll get anything from them... they are too old; though who knows... maybe some1 will pay for nostalgia or something.

9

Keep - STX sound card, Antec HCG psu, NZXT case, 1tb wd blue, 8gb ram from build 1 and a single windows license + probably the 212 cooler.
Then sell everything else.
Buy - i5/i7, half decent motherboard, good gpu - 290 / 290x / 390 (when released) / gtx970/980, good ssd ~ samsung, intel, crucual etc.