What is the difference between the PWM, the ULN and the FLX versions?
1742852
PWM fans have 4-pin connectors and the speeds can be controlled by your motherboard, usually see those connectors on cpu heatsinks. ULN and FLX have 3-pin connectors and can only be controlled by voltage adapters supplied by Noctua or a fan controller etc. ULN (Ultra Low Noise) means that they will generally run at the slowest speeds while being the quietest. FLX covers more range in terms of fan RPM.
1742853
PWM is a "pulse-width-modulated" fan whose rotational speed is controlled by motherboard and thus needs 4 pin connector. Most of the new motherboards have four pin connectors. ULN and FLX are not PWM and thus only 3 pin connector. If your motherboard is new, then you should buy a PWM version.
1742854
PWM is the most standard version. People who want to push a little extra air but still stay quiet and keep up with a mild overclock, these are also 4 pin.ULN is targeting users who hate sound. These are lower voltage and push less air.FLX is the dynamic fan, you can run it a little higher or lower watt and push a littler higher or lower air.Personally I can't see any reason to use anything but PWM. They even come with a free adapter to lower the voltage if for some insane reason this already super quiet fan isn't quiet enough.
1343948
As i know, that is only different firmware and different installation. You won't even know which version you will get until you have the solid usb in front of you. Here is the information from dlink. http://12.130.207.50/products/revision.asp?productid=DWA-130so far i only saw they have driver for 32bits and 64 bits, no A-E revision.
1976527
The difference that I can see when comparing is that the Fein FMM 350Q is newer, the motor is more powerful and is more expensive. The Fein FMM 350Q is 350 Watt as compared to my 250 Watt. I chose my Fein 72293768090 Top (2013) Kit MultiMaster Oscillating Multi-Tool because it was a bit cheaper and it has more blades in the kit.
4096
http://www.ehow.com/list_7496265_differences-advance-lx-dlx-premier.html i found differences listed here!
959820
XLN is ultra low NOX, LN is low NOX. Not a performance difference as far as I'm aware, only emissions controls.
782477
I can't find any difference at all besides on the top banner after Coreldraw X6 it says "Not for Commercial Use" ... otherwise it is exactly the same for all intensive purposes.
1494199
29320LPE is U320 SCSI controller. 19160 is U160. They also have different type of external connectors.
207317
There is no difference in speed, both are gigabit Ethernet switches. I can't say if there is any internal difference with the new one because I don't have it. But the plastic one works great for me
291488
The whole idea behind PWM (pulse width modulation) is so you can plug it in and forget about it because the bios or software takes control and adjusts fan or pump speeds for you. Anytime you see analog knobs on a device, that should let you know that you will have to manually control fan speeds on the fly or if the hardware has the ability, you can set max and min temps to dictate your fan speeds based on the temps you are getting from that particular temperature probe channel. Personally I like seeing temps and being able to manually adjust. Also I just like the look and feel of analog knobs on a potentiometer. Hope my point of view helps.
1668697
Yes, the led power is integrated into the fans, the pwm only relates to the rpm of the fans. I've run splitters with 3 & 4 fans at a time & all leds work just fine.
359260
Yes, the bios actually supports manually configuration or pre-set settings for PWM control
602399
I don't know the technical aspects of the differences since I haven't tried both types with my computer. Sorry.
145703
I have bought both and both have worked. Not sure of the technical differences.
798562
The specifications for each are online. One has greater wattage and runtime and projects a longer distance. You can compare to determine which one would suit your intended application.
1968572
The primary difference is the addition of an on/off button on the front panel of the 641P. As far as I can tell they are identical otherwise.
1387736
1st go to http://www.coolermaster.com/cooling/jetflo/jetflo-120/ as it has a lot of information on the product itself, including the specs and on this page http://www.coolermaster.com/cooling/jetflo/jetflo-120/ you can go to the download tab and find the supporting manual and also a Specs tab showing the connector as the 4-Pin (PWM). I hope this helps.
1784378
There isn't one as far as I know. I think you have two choices - 1) use ETTL, or 2) guess the power in manual and review the histogram. I must say that I'm disappointed that they haven't published a fix for the manual / pre-flash problem, and I'm currently considering going back to PW because of this. However, if you want ETTL, they are great.