News - Corsair wants to know: what features do you look for in a PSU?

[Iota]

Good point....

But, a question then on the HX1000. Does it load balance across the +12V rail that should be dedicated to graphics?

Nvidia SLI certification these days REQUIRE that the PCIe connectors be on their own +12V rail to avoid any problems from running high end graphics cards on split +12V rail PSU's.

Because i wasn't entirely sure if it did / did not from the product description when i was looking at psu options (and will again on the release of the release of Westmere).

Because i worked it out something along the lines of this:

Zalman ZM850-HP
Dual Engine (2 +12V rails)
768W / 12V = 64AMPS

Which gives 64AMPS for my graphics cards (384watts)

64/4 = 16AMPS per pci-e (32 amps per card)
384/4 = 96watts per pci-e (75watts being the rated amount)

Corsair HX1000

Dual engine (2 +12V rails)
1000W / 12V = 83.3AMPS

Which gives 83.3AMPS for my graphics cards (500watts)

83.3/6 = 13.883333333333333333333333333333 AMPS per pci-e (27.766666666666666666666666666667AMPS per card)
500/6 = 83.333333333333333333333333333333watts per pci-e (75watts being the rated amount)

I mean i could be completely wrong! The product descriptions given to the consumer are fairly "ambiguous" and could be improved 10 fold to include the imformation on amps provided on each pci-e connector, depending on configuration.

Perhaps that should be added to the list of what i'd love to see, clearer product information that gives us ALL of the information we need at a glance without having to sit down and work it out for ourselves (and getting it wrong.... )

[Gareth - ASUS]

I think you probably over-complicated/confused things a bit by trying to work it out per PCI-E plug

The HX1000W has more power at 12V - that's the main thing to look for. For the HX1000, the CPU (24-pin ATX and 8-pin EPS) and two of the modular PCI-E plugs run off 12V1 (40A), while the two fixed (captive) PCI-E plugs and other two modular PCI-E plugs run of 12V2 (40A). So it's nicely distributed.

If you have a single +12V rail (or two big ones, ooer) you don't have to worry about which cables to use - that's the main advantage over split, multi-rail units.

HX1000W is also triple SLI-certified (the first 1000Watter to get this, because of its meaty nature) which also tells you something about its capabilities.

[asposium]

in order

Reliability
Stability
Efficiency

module cables are nice
willing to pay a premium for the above

[jamjamm]

Reliability/Efficiency
Noise - has to be practically silent for me
Modular