Pros: (I'm primarily a productivity user) Big enough that Windows 125% scaling works pretty well. Picture is gorgeous. Haven't run into any quirky behavior.

Cons: Tried hard but could not get 60Hz working over HDMI (same card and cable worked with another 4k monitor; swapped to cable included with monitor and same result - 30Hz max). Eventually gave up and used the DisplayPort cable, and it works fine at 60Hz. Easy to lose the mouse cursor among all those pixels... WIN10's huge cursor is kind of oversized, but that's a software issue.

Overall Review: Thinking of buying another for my adjacent Mac - and dual monitor use. Xcode could certainly use a 7680 x 2160 display! Gamers will want a higher refresh rate, but 60Hz is fine for me.

Pros: Usual good price, quick enough free delivery.

Cons: Manufacturer packaging had been previously opened, edge connector shows signs of prior use. Hoping it will work OK, I thought I was buying a brand new item. This qualifies as opened box status IMO.

Pros: Low cost, low power consumption. Plenty of cores. With a good MB, it will work with a PCIE 3.0x4 SSD.

Cons: Nothing serious so far. Obviously there are better, more expensive processors available, but the vanilla 2600 is great for me. I probably botched the memory setup with 4 8GB sticks, apparently 2 16GB sticks would clock faster? Got a temporary brick situation, had to use the BIOS clear jumper - UEFI is new to me. VirtualBox blue screened on me occasionally, but this seems to have ended - probably a software bug.

Overall Review: By next Black Friday, I imagine the 3600/3600X or higher will be a better deal. The 2600 was great for me because I want a somewhat low-TDP "green" PC, and 6/12L cores is a step up from my last build.

Pros: Reasonably quiet and blows very cold so far.

Cons: Nothing major. While it shows the target temperature, it doesn't seem able to display current temperature, like a similar unit I had. Ambient room temp from 10 feet away seems to run 3-5 degrees colder than the thermostat setting.

Overall Review: This seems like a slightly updated and rebranded version of a Haier 12000BTU I had (which lasted ten years). If so, I'd call this a plus, I've been happy with Haier. A bit heavy to handle, installing by myself - get a helper or be careful.

Pros: Win10 *PRO* 2x Standard DDR3-12800 CAS-9 slots - I reused some old memory no problems Arrived in 2 days Worked out of the box, no problems at all Runs *very* cool and quiet.

Cons: i3 is a tad slow (as expected - sort of a nextgen Atom or Celeron) No wifi, had to use a USB dongle NIC (Rosewill from Newegg, no problems) Bright blue power switch LED kind of lights the night, ha ha.

Overall Review: Win7 Pro might be nicer, and I imagine I could downgrade from the licensed Win10 Pro A little uncertain what will work for HDD (SATA 2.5/PCI-E/M.2) and video adapter upgrades. Probably won't try. A 2.5" 2GB hybrid SSHDD sounds tempting. I normally would not buy any refurbished electronics, my luck runs bad in this area - seems they do a few trivial tests and assume the original owner didn't know what he was doing. These were retired working equipment, so I felt a bit more confident that no defects linger.

Pros: Nice picture Cables included Energy sticker says it is very low power consumption. I don't feel any heat coming off it, so I assume this is right.

Cons: Weak stand, the right side was at least a quarter inch below the left. Propped it up with a little piece of 2x4 wood. Now I want one of those wooden keyboards! :)

Overall Review: Worked out of the box, I only touched the menu buttons to adjust the brightness and contrast. Very happy so far (but only used for 2 days).