Power Supply Recommendation (heavy duty & high temp)

Arrow · Post by **Arrow** » 2005-10-17 11:40am

Ok, this is for a system at work. We need a power supply that put out at least 36 amps on the 3.3v rail (more would be preferrable), is standard size (that rules out something like the PCPnC Turbocool 850) AND (here's the kicker) operate at up 50 C (like anything else in the system will work at the temperature, but that's one of the requirements...).

The 5.5v should be 36 amps as well, but we should be able to get away with less, if necessary. The 12v rail isn't that important - its just powering one HD and some fans.

I know this is a tall order, but hopefully someone has stumbled across such a PSU.

phongn · Post by **phongn** » 2005-10-17 12:25pm

Supermicro has some that will at least power that many amps but I don't know their thermal limits. You may have to go with something like an industrial power supply.

Uraniun235 · Post by **Uraniun235** » 2005-10-17 01:17pm

What the christ are you running that requires such a monster power supply?

How about this one?

Arrow · Post by **Arrow** » 2005-10-17 01:22pm

A dual Xeon machine with very power hungery, very power senstive PCI-X FPGA boards (in its current configuration, it has five FPGAs, including three large Vertex 2 Pros, and it can have up to two more in alternate configuration).

Edit: The amps look good, and I have looked that PSU before, but the Enermax site doesn't seem to work (in either IE or Firefox), so I can't tell if it meets the temperature spec. We currently have an Enermax 550W powering it, and it barely makes - if we add anything to FPGA images (which we will), our current PSU probably won't be enough. Also, it doesn't meet the temperature spec.

And we've also tried a PCPnC TurboCool 510 XE - it dips into the red on the 3.3 rail, so our data comes back fucked up. I wish we had the room for the bigger 850 and 950 PSUs.

phongn · Post by **phongn** » 2005-10-17 01:26pm

Uraniun235 wrote:What the christ are you running that requires such a monster power supply?

How about this one?

As they say on Ars, friends don't let friends buy Enermax

Arrow · Post by **Arrow** » 2005-10-17 01:32pm

Also, I didn't know Supermicro made PSUs. There 650 and 700 watt PSU look interesting, but there's no spec sheet on their site. Time to email the sales department...

Uraniun235 · Post by **Uraniun235** » 2005-10-17 05:12pm

Arrow Mk84 wrote:Edit: The amps look good, and I have looked that PSU before, but the Enermax site doesn't seem to work (in either IE or Firefox), so I can't tell if it meets the temperature spec.

The images on Newegg include a shot of the sticker on the power supply, which includes a graph indicating the fan level at various temperatures, and the fan isn't maxed out at 55C. I would guess that it would fall within spec, but I don't blame you for wanting to be triple sure.

phongn wrote: As they say on Ars, friends don't let friends buy Enermax

Really? The SH/SC Power Supply Guide suggests that Enermax is a decent brand.

phongn · Post by **phongn** » 2005-10-17 05:20pm

Uraniun235 wrote:
phongn wrote: As they say on Ars, friends don't let friends buy Enermax
Really? The SH/SC Power Supply Guide suggests that Enermax is a decent brand.

Back in the day they had some shady numbers on them and while they might have improved, well, I don't trust them.

EmperorMing · Post by **EmperorMing** » 2005-10-17 10:57pm

You already mentioned the PCPnC site, did you find anything there that would fit your requirements?

Since I went looking around anyway; that is a tall order.

Arrow · Post by **Arrow** » 2005-10-18 02:04pm

EmperorMing wrote:You already mentioned the PCPnC site, did you find anything there that would fit your requirements?

Since I went looking around anyway; that is a tall order.

Actually, even the large PCPnC PSU don't meet our 3.3V requirement. If only the folks that manufactured the FPGA boards put a molex or PCIe power connector on them...