I've read the two articles on this site about review of these power supplies, at least some versions of them.
The EDGE is said to be not very quiet with a not-very-relaxed fan ramp-up profile.
The Corsair is said to be silent in low loads / temperatures and rises to a higher RPM when load exceeds a certain treshold.
I personally prefer a PSU to have a spinning fan at all times, even if it is a very low one.
The EDGE fan spins at about 600 RPM and then ramps up very quickly to a whopping 1800 RPM at perhaps 400W (for the 650W model), staying there as the load increases (rather nonsensical).
If this was some CPU fan PWM control you could simply change those values, but rather, this is a bit hard programmed into the thing...
I always undervolt my fans. On the screenshots of the article I couldn't really clearly see how the fan is connected to the board.
Would it be that hard, generally speaking or perhaps practically specifically speaking about this unit, to insert a resistor PWM cable (if it is PWM) between fan and socket to lower the V a few? I mean the EDGE. That won't do anything about the ramping but I doubt it responds to temperature? Also, it was said that this PSU is not all that quiet, but that mostly speaks about the ramping. The RM's fan starts at 900 RPM. Although that happens at (I guess) 200W (for a 550W unit). The EDGE that was tested was 650W. Here is the ramp-up picture:
It seems really rather stupid this profile. What were they thinking?
I'm not even sure how much my system can draw atm, it has a 95W CPU and could get a 75W GPU but that's about it (and 4 notebook hdds at 2.5" 5400 RPM) add a few fans and much more it doesn't take. I doubt it can really go above 200W. But that's what overclocking is for
.
Hey you gotta have something to heat your room.
But supposing my system would draw 200W (and even a 45W CPU system can draw 100W easily? [ I mean at the wall ]) I just can't have it running at 1800 RPM. Here is a graph from AnandTech for the 550W:
They didn't measure or record RPM, But from the looks of it the ramping isn't as steep or one-sided as that of the 650W tested here. It ramps continually, the steepest is indeed up to 200W, but after that it keeps to rise so I can assume it does about half of the max, not more than 1000RPM at 200W certainly.
And perhaps close to 900RPM, I don't know. Which puts it on par with the RM 550/650 ?.
So given that I buy a 550W CPU for 3 reasons:
- prepared for higher loads if they ever surface, because I don't think such a unit would or should break down.
- high efficiency at 100-200W which perhaps wouldn't be had for a 330W CPU.
- can use the computer as a heating device.
These "unrealistic synthetic situations" are not unrealistic for me at all, because I like to stress my CPU/GPU to generate heat (I don't have a GPU installed yet -- but I run probably 4 cores of my FX 6300 at 100% continually to make the internal climate here a bit more bearable 
). [ cpuocct64.exe uses about 64% CPU continually ]. But I still don't want the PSU to make all that much noise, especially at night.
And it works, it definitely heats up my room.
So given these factors, would it make sense to choose the EDGE over the RM, or vice versa(?) and, would it be easy or useful (without soldering) to undervolt the EDGE's fan?
1. I prefer a continually spinning fan at about 600RPM base.
2. I normally wouldn't want it to exceed 1000RPM
3. big fan (135mm) is preferable to smaller fan (120mm)
4. if the EDGE fan profile is not relaxed enough, why not undervolt it?
5. they are the same price almost
6. a realistic load for my system is probably 200-250W max, probably closer to 200W.
7. no clue about the future
8. I expect the unit to last a long time.
Like, this crap is available on Amazon:
That would fit inside the PSU, probably? It is a lengthy one.
Oh, and,
9. Corsair and Antec are the only things that I enjoy atm, with regards to these PSUs. The only brands, I mean.
The EDGE is said to be not very quiet with a not-very-relaxed fan ramp-up profile.
The Corsair is said to be silent in low loads / temperatures and rises to a higher RPM when load exceeds a certain treshold.
I personally prefer a PSU to have a spinning fan at all times, even if it is a very low one.
The EDGE fan spins at about 600 RPM and then ramps up very quickly to a whopping 1800 RPM at perhaps 400W (for the 650W model), staying there as the load increases (rather nonsensical).
If this was some CPU fan PWM control you could simply change those values, but rather, this is a bit hard programmed into the thing...
I always undervolt my fans. On the screenshots of the article I couldn't really clearly see how the fan is connected to the board.
Would it be that hard, generally speaking or perhaps practically specifically speaking about this unit, to insert a resistor PWM cable (if it is PWM) between fan and socket to lower the V a few? I mean the EDGE. That won't do anything about the ramping but I doubt it responds to temperature? Also, it was said that this PSU is not all that quiet, but that mostly speaks about the ramping. The RM's fan starts at 900 RPM. Although that happens at (I guess) 200W (for a 550W unit). The EDGE that was tested was 650W. Here is the ramp-up picture:
It seems really rather stupid this profile. What were they thinking?
I'm not even sure how much my system can draw atm, it has a 95W CPU and could get a 75W GPU but that's about it (and 4 notebook hdds at 2.5" 5400 RPM) add a few fans and much more it doesn't take. I doubt it can really go above 200W. But that's what overclocking is for
.Hey you gotta have something to heat your room.
But supposing my system would draw 200W (and even a 45W CPU system can draw 100W easily? [ I mean at the wall ]) I just can't have it running at 1800 RPM. Here is a graph from AnandTech for the 550W:
They didn't measure or record RPM, But from the looks of it the ramping isn't as steep or one-sided as that of the 650W tested here. It ramps continually, the steepest is indeed up to 200W, but after that it keeps to rise so I can assume it does about half of the max, not more than 1000RPM at 200W certainly.
And perhaps close to 900RPM, I don't know. Which puts it on par with the RM 550/650 ?.
So given that I buy a 550W CPU for 3 reasons:
- prepared for higher loads if they ever surface, because I don't think such a unit would or should break down.
- high efficiency at 100-200W which perhaps wouldn't be had for a 330W CPU.
- can use the computer as a heating device
.These "unrealistic synthetic situations" are not unrealistic for me at all, because I like to stress my CPU/GPU to generate heat (I don't have a GPU installed yet -- but I run probably 4 cores of my FX 6300 at 100% continually to make the internal climate here a bit more bearable
). [ cpuocct64.exe uses about 64% CPU continually ]. But I still don't want the PSU to make all that much noise, especially at night.And it works, it definitely heats up my room.
So given these factors, would it make sense to choose the EDGE over the RM, or vice versa(?) and, would it be easy or useful (without soldering) to undervolt the EDGE's fan?
1. I prefer a continually spinning fan at about 600RPM base.
2. I normally wouldn't want it to exceed 1000RPM
3. big fan (135mm) is preferable to smaller fan (120mm)
4. if the EDGE fan profile is not relaxed enough, why not undervolt it?
5. they are the same price almost
6. a realistic load for my system is probably 200-250W max, probably closer to 200W.
7. no clue about the future
8. I expect the unit to last a long time.
Like, this crap is available on Amazon:
That would fit inside the PSU, probably? It is a lengthy one.
Oh, and,
9. Corsair and Antec are the only things that I enjoy atm, with regards to these PSUs. The only brands, I mean.