I have an HX750 from Corsair that I really, really like. It barely gets warm. It has a bad fan bearing so it grinds when it spins but under a 350+ watt load, a 80mm Noctua fan I just stuck on with two-sided foam tape is actually sucking enough air through to keep the fan from even spinning up at all.

Between Seasonic, Coolermaster or Thermaltake for my number two, I don't really know.

P.S. if you buy from Thermaltake, I can provide you with a code to get 10% off.

I run 2 evgas (480 FTW, and 580 FTW2) and love them dearly.

Power supplies?

Corsair FTW

I got the new Corsair 860W modular PSU inserted today. amazing PSU. very clean installation. Love it.

When I took out the old PSU, a small screw came out! lol.. wonder how that appeared inside there.. could make a fire! I was sooo precise when I built that machine due to 2x 1000usd titan cards.

I guess I got the answer to why the old PSU said good night.

The old PSU had the air blowing into cabinet, upwards, so anything falling down goes straight into the PSU. The new corsair, has its blowing out below the machine. I expect this setup now to run for "years"

Also 2 new nodes came, motherboard to fit 3 full size cards.. got 2 second hand 580s shipped this week.. so they are going into one node.
Second node will get linux installed, and one titan board inserted to test cuda on linux and see if I can utilize different processes using hyperq.

I have made a bid for more 580s, so I hope to get 4 more of them..

(total 10 GPUs.. (2x of them titan, and 2x 590s, 6x 580s).

[QUOTE=Manpowre;360006]The old PSU had the air blowing into cabinet, upwards, so anything falling down goes straight into the PSU. The new corsair, has its blowing out below the machine. I expect this setup now to run for "years".[/QUOTE]

I hope you all will forgive me for being a bit pedantic -- it's Friday night; and it's been a very good week.

1. Heat flow, air flow; thermal dynamics are critical in the domains within which we work.

2. There's some quite amazing "kit" available COTS to do this kinda thing, but (IMO) the implementer need to understand what they're doing to have success.

Have a great weekend everyone!

[QUOTE=chalsall;360009]I hope you all will forgive me for being a bit pedantic -- it's Friday night; and it's been a very good week.

1. Heat flow, air flow; thermal dynamics are critical in the domains within which we work.

2. There's some quite amazing "kit" available COTS to do this kinda thing, but (IMO) the implementer need to understand what they're doing to have success.

Have a great weekend everyone![/QUOTE]

About airflow, yes, PSU air blowing straight in isnt the best thing, but it actually was no problem with that. the air was actually not warm. The second GPU which got the air straight in the face was cooler than the one above. so that was never a problem. now, there is smaller difference in temperature between the lower gpu (closest to the PSU), and the upper gpu. before there were almost 10 degrees difference, not it is only 2 degrees. This only because the new gpu blows down and out of cabinet instead.

friday evening yes, Im building servers..

all in all, I have 4+4+8+6 cores in total, with now 8 cudalucas processes running.. the last server with the 2 processes is being built right now. Corsair 4u server cabinet..

[QUOTE=Manpowre;360011]About airflow, yes, PSU air blowing straight in isnt the best thing, but it actually was no problem with that. the air was actually not warm.[/QUOTE]

I would argue that a PSU's fan should not push ambient air into the case, after passing through the PSU's electronics generating heat.

IMO, all fans involved with cooling components which generate heat within the "case" should exhaust the heat outside of the case whenever possible.

Just my opinion, of course.

If oriented properly, a PSU should be taking fan from outside the case (if bottom mounted) or inside the case (if top mounted) and push it out immediately.

All intakes should preferably be directly from outside and pass through nothing hot. Air flow inside the case is still important for passively cooled components (memory, VRM)

[QUOTE=TheMawn;360031]If oriented properly, a PSU should be taking fan from outside the case (if bottom mounted) or inside the case (if top mounted) and push it out immediately.[/QUOTE]

Thanks TheMawn.

In the rack-mount space... All the fans are "pointed north" (away from the front).

You've got the "cold side" (the hard-drives) at the south. You've got the "hot side" (the PSUs) at the north. You've got the CPUs and GPUs somewhere around the equator.

All the various fans are cooperating, and are redundant....

[QUOTE=chalsall;360034]You've got the "hot side" (the PSUs) at the north.[/QUOTE]I find it ironic that "north" is considered "hot" (it's -19°C (feels like -29°C) here tonight and snow all over the place here. And I'm not even that far north.)