Pros: It runs very cool while doing everything I need. I use my PC for 3D, video, and gaming. For my previous couple of builds, I opted for faster/more expensive components that are overclockable. This was great, but over time I ended up being unhappy with the heat and noise, both at idle and at load. This time I wanted to see how quiet I could go while keeping costs under $1000. I didn't want any hyper-threading, and decided to skip the overclocking this time since coming to the conclusion that it wasn't really as fun/rewarding as it used to be in the old days. I read reports that Haswell chips run hotter than Ivy Bridge, but also run cooler while idle. The latter seemed interesting, so I decided to try the i5 4570S, "S" for the 65Watt version. I paired it with a low power, mid-range discrete GPU and put them on an Asrock h87 board with a good SSD and a 400W fanless PSU. I modded both CPU and GPU heatsinks with bigger, ultra-quiet fans and ran everything at stock speeds. I gotta say, this is a new kind of joy. It's temp ranges from ~30C at idle to ~65C at full load torture test. The fans never go above 25% speed, and are barely audible. It may not be a hard-core gaming rig like we have at work, but it runs the latest games (Metro Last Light) at med settings very well and without moving much air. Just as an experiment, I unplugged the CPU fan entirely, and the idle temp stabilized at 40C. Running an older game like Skyrim took this up to 50% load and fanless it stabilized at 47C. I then tried running a fanless torture test and it tool over 5 minutes to reach 85C. Never would have tried any of that with my previous machines... Now I'm tempted to upgrade my GPU heat sink as well and see if I can have a completely passive gaming rig. Pros: Perf/Power ratio along the entire use range. Scales down power use really well while still being able to turbo boost to 3.6 GHz for more demanding applications.

Cons: Cons: For what I wanted, none. The integrated graphics and drivers are much better than they were, but for my needs are still not good enough to replace a dedicated GPU.

Overall Review: Wish I could get a CPU nowadays without the stock heatsink/fan. Oh well... O hey, I forgot to plug my CPU fan back in...

Pros: Absolutely outstanding performance from a 65w TDP. If you are afraid that it will not perform because of the low stock ghz do not be afraid. The turbo function works and it works well. 22nm and low tdp keep this chip running cool even in my small bitfenix prodigy case which is only being cooled by the cpu fan, graphics cards fans, and one 120mm fan. It's an intel which means it has better performance per core even at a slower clock speed, don't ask me how this magic works it just does. I'm coming from an overclocked Phenom II x 4 970 BE Quad Core at 3.9ghz and I can tell you even at a much slower speed this chip destroys my old amd in performance.

Cons: No overclock but I knew that going in, kind of pricey, no extra threads like the i7 line, not the newest i5 on the block anymore.

Overall Review: Although the price is up there it is much less than an I7 and if you are thought conscious of power consumption but still want great performance this is the chip to get. Couple this with a GTX 750 Ti you are looking at a very good system per price and per watt.

Pros: This CPU has been running my home server: Windows Server 2012 with a couple of other OSed on Hyper-V. The CPU runs cool on 8GB of memory. No overclocking (I don't need it), no high temperatures, and just great response. I researched Haswell CPU models fairly carefully, looking for a good fit for my home server needs. This came on top considering many aspects including core count, max memory, socket type, no HT, power, graphics, VT.

Cons: none

Pros: Speedy little CPU Low power (what I was looking for) Quad Core Fan seems quiet enough (HTPC setup) PC boots up in under 12 seconds (with Bios splash-4-5 secs) Fresh isntall with all updates on windows - Added AVG install and now it's under 20 sec's...but that's software: SSD installed.

Cons: Speed could be faster, but then you wouldn't get as much energy effeciency.

Overall Review: I bought this for a HTPC, as of right now the PC pulls around 30-50 watts (have a watt meter plug) on average. This is normal web browsing or video watching. Haven't checked Games as I am going to add a video card to the system to test it out. Setup: 30-50 watts average electic pull for HTPC Fractal Node 605 HTPC case (x3 120mm x2 80mm Fans) Samsung EVO 120GB SSD Bluray Slim Drive ECS B85H3-m(1.0) Mobo 1600 8G RAM (x2 4G sticks) Will update if I get more info

Pros: Cool, around 30-35 C idle, around 55 C under load, not bad given it's inside a small mini-ITX case and that I'm using a stock cooler. Quite fast, enormously faster than my old Core 2 Duo. Low wattage, therefore less heat, ideal for small cases.

Cons: Locked multiplier, so cannot overclock, but I knew that before buying it, I don't want to overclock anyway, I just wanted a fast and cool cpu that wouldn't require an aftermarket cooler.

Pros: This CPU runs very cool and uses very little power. Despite this it is extremely capable. This is a fantastic choice for a HTPC or a mid-range general computing box. The integrated graphics are more than enough for general computing tasks and can even do OK with some games. I tested it with Starcraft 2 on medium settings and it did quite well.

Cons: The integrated graphics aren't enough for most hardcore gamers. If you're building a gaming rig then you'll probably want a discrete GPU.

Pros: Low power, low cost quad core with high performance on tap (3.6Ghz) when needed. No need for aftermarket cooler unless you're pegging the processor for hours at a time.

Cons: Limited overclocking due to locked multipier. But you knew that going into this purchase, didn't you? Just think of the 3.6Ghz turbo performance as free built-in overclocking ;)

Overall Review: Gets 7.6 on the cpu portion of Windows Experience Index. Actually about 3% faster than my i5-3570K (not overclocked) in 7-zip benchmark (16677 mips vs. 16186 mips). If you're not interested in overclocking, this processor is probably the best bang for your buck, especially when you factor in power consumption and cool operation with stock cooler. The highest temps I've seen when running burn-in programs is around 65 C. Typically, it'll be closer to 45-55 C under load.

Pros: -Low power; -Low heath; -Quad core; -Great speed; -Love the new GPU updates.

Cons: None so far, it does what I want it to and so far no problems.

Overall Review: Great for HTPC builds or everyday usage. HTPC build with Windows 8.1 Pro 64bit with XBMC.