Corsair HX620's Maximum Load?

[TheTorch]

What is the maximum load that I can run on a Corsair HX620.

Using this,
http://extreme.outervision.com/psucalculatorlite.jsp
it says I need 563 Watts for my PSU.

 

[MCMONOPOLY]

A quick way to absolutely make sure you can use a certain PSU for a given load i use is this: take the rated power of the PSU( in this case 620W peak), multiply it by 0.8 (in this case it gives us 496W) for high efficiency units, and 0.7-0.75 (in this case it gives us 420-465W) for average units, and if this is below what you need (in this case you said you needed 563W), then you should go to a more powerful unit.

I had that exact PSU with my previous rig, and I was able to run 4 HDDs, 2x1950pro in XF, an OC'ed X2 and a bunch of case fans no problems. The only time I ran into troubles was when the room temps got over 30C in the summer, then I would get random reboots when gaming.

One thing to look for are PSUs that rate their power efficiency @ 50C instead of the usual 25-30C.

Mind that the rated power of a particular unit is almost always peak power, the little trick above can help you get a quick reference to what you get form the advertised rated peak power.

Hope this helps.

EDIT: Just out of curiosity, what setup did you calculate, because from the rig in my sig, with a second HD3870 in Crossfire, I only get a 403W requirement?!

 

[aevm]

I can tell you that the 620HX can even run two 8800GTX cards and a Quad CPU. It should be enough for a lot of people. Of course, if you want something like two 9800GX2 cards and 7 hard disks you will need something bigger. What is your configuration?

 

[HyperBladeST]

Your crashes in gaming were probably due to the X1950 overheating old P4s on stock cooling had problem too when it was hot in summer (mine was sometimes at 55C IDLE when it was only 28 ambient temp...)

 

[MCMONOPOLY]

Your crashes in gaming were probably due to the X1950 overheating old P4s on stock cooling had problem too when it was hot in summer (mine was sometimes at 55C IDLE when it was only 28 ambient temp...)

At first that's what I thought also, but I had X1950Pros with the second kind of PRMs, the ones that were made after all of the first batch of 1950Pro were sent back because of them failing at light load, but I alway ran Atitool with the fans set @ 90%, which kept both GPUs and Vram well within their thermal envelopes. The X1950Pros were/are very power hungry.

Also just before I changed my rig, I bought the PSU in my sig, and all was well even during the last hot weeks of last summer.

The Corsair got so hot at times that I tought a few times that it would go altogether.

 

[TheTorch]

EDIT: Just out of curiosity, what setup did you calculate, because from the rig in my sig, with a second HD3870 in Crossfire, I only get a 403W requirement?!

Asus Rampage Formula
Q9450 OCed to 3.6GHz
Thermalright Ultra 120 Extreme Cooler /w Scythe S-Flex 120mm
2x2048 Corsair XMS2 C4 PC6400
5x250GB Sata HDDs
2xDVD Burners
1xDVD Rom
Radeon 3870X2
RocketRaid 2320 PCIe 4x Raid Card
Creative X-Fi XtremeMusic
Netgear PCI WiFi Card.

The Corsair HX620 is rated at 50C.
The room temperature here is like 40C.

 

[aevm]

I got 717W for that setup, with 15% capacitor aging and 1.4V for the CPU and 4 fans and so on. Maybe you should look at the Silencer 750W Crossfire Edition or the Antec Quattro 850W.

 

[MCMONOPOLY]

I agree that 620W won't cut it at all...
As AEVm said ~750-850w is all but the minimum.

 

[TheTorch]

I have an APC Back-UPS RS 1000VA (620w).
What would happen if I ran my computer on this UPS with the 750w PSU?
I presume it would overload only if I was gaming or something.

 

[XMSYellowbeard]

First, are you saying it stays 104F in your room???

Second, the HX WILL run this setup but, you are better off hitting about 65% of your PSUs max output for longevity. A 750w unit is probably best. Also, that power calculator looks to be VERY high.

 

[TheTorch]

First, are you saying it stays 104F in your room???

Second, the HX WILL run this setup but, you are better off hitting about 65% of your PSUs max output for longevity. A 750w unit is probably best. Also, that power calculator looks to be VERY high.

Ya I'm from India. Daytime temperature is around 36 to 40 C.

I suspected that the power calculator was high, but then I assumed that it was correct because it showed the lowest values compared to the other online calculators which showed ridiculously high values. It says my current rig needs 550w but I only have a 500w cheapo PSU and it works fine, stable with OC.
I've already got the Corsair 750HX. But I didn't get a GPU yet, since the GTX 280 is releasing on June 18th. I'll import it instead of buying an "outdated" 3870X2 over here.

And since you're from Corsair, is there much difference between the TWIN2X4096C4DHX and the TWIN2X4096C5DHX? I'll need to OC them to around 900MHz and only the C5 RAM is available here.

 

[bob8701]

wait a minutes:
x3210 oc 3.4 Ghz
8800 gts 640 MB
2 Gb ram
3 hard drvies: 74 GB raptor 2 750 GB hard drive
4 fans
it only draw less than 250 WATT when run 3d 06 test, i have corsair 520 w which get job done, I measure power by a kill watt meter.
for Op set up, it is no way to get close to 360w, yes I know we should pay attention on 12v rail max current, not the total wattage, so any psu can output least 30 A will be good.
my conclusion is 620 w is good enough for your set up.

 

[TheTorch]

My UPS software shows the wattage being drawn. For my current setup it shows 250w idle and 360w in gaming. According to that I think my new setup should draw atleast 500w ?

 

[bob8701]

I thought new cpu and video card use smaller size transistor, so it should use less ac power, it will be interesting to know what is actually usage