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Current/wattage requirement for the TWINX2048-4400PRO?

C

computer

Platinum Member
I posted this at the Corsair forums, but no replies yet so I'm hoping someone here can answer it.

Can anyone possibly tell me please what the current/wattage requirement is for the Corsair TWINX2048-4400PRO modules? That's 2x1gb w/LED's.

I need to get a new PSU and I'm concerned that 25A on the 3.3v rail isn't enough (ST50EF-Plus). I seem to have had some issues with PSU's with less than 30A on the 3.3v rail with these sticks. I say that because the PSU's I tested that were less than 30A got MemTest and WMD errors & lockups. Now that could be attributed to something else, but I can't be sure. I've also seen some comments about PSU's in the 25A range like "may not be enough for some memory" and things like that.

I should clarify something in case someone thinks I think memory needs ~25A of current...I don't think that. What I need to know is on my platform ( http://www.anandtech.com/mysystemrig.aspx?rigid=25693 ), I have reason to believe that less than 30A on the 3.3v rail is not enough with this memory, but it WAS enough for my PREVIOUS 2x512mb DC kit (Geil PC4000 Ultra Platinum). So if someone can tell me the current (amperage) requirement for this memory, that would help, or, how much more current does the Corsair draw than a typical 2x512mb DC kit.
Thanks.
 
You're taking the piss.

Honnest, you are.

Really.

Come on, own up, this is a wind up.

You're not really serrious?

ah heck, you are as well.

Ok then, here's the answer....

You ready yet?

Well here it is:

ah heck all, maybe as much as 7A for 2 sticks.

Your issues with other PSUs is completely irrelevant to the power draw of the RAM. There is no way, simply none, that 2 RAM sticks are sucking down 90W of power.
 
Originally posted by: Bobthelost
You're taking the piss.

Honnest, you are.

Really.

Come on, own up, this is a wind up.

You're not really serrious?

ah heck, you are as well.

Ok then, here's the answer....

You ready yet?

Well here it is:

ah heck all, maybe as much as 7A for 2 sticks.

Your issues with other PSUs is completely irrelevant to the power draw of the RAM. There is no way, simply none, that 2 RAM sticks are sucking down 90W of power.
Click to expand...
Like I pointed out, which I guess you missed:
"I should clarify something in case someone thinks I think memory needs ~25A of current...I don't think that. What I need to know is on my platform ( http://www.anandtech.com/mysystemrig.aspx?rigid=25693 ), I have reason to believe that less than 30A on the 3.3v rail is not enough with this memory, but it WAS enough for my PREVIOUS 2x512mb DC kit (Geil PC4000 Ultra Platinum). So if someone can tell me the current (amperage) requirement for this memory, that would help, or, how much more current does the Corsair draw than a typical 2x512mb DC kit."

There ARE more things in a system than memory that use the 3.3v rail. So yes, I AM "serious".

 
Originally posted by: henryay
My guess, at max, 5W each. You would be able to feel the heat at anything above. That's 1.5A BTW.
Have you tested the sticks with Memtest?

Edit: According to this: http://www.extreme.outervision.com/PSUEngine, 2 sticks of DDR draws 14W of power. LEDs may just add about 1W.
Click to expand...
Hello, I mentioned in my first post:
"I say that because the PSU's I tested that were less than 30A got MemTest and WMD errors & lockups. Now that could be attributed to something else, but I can't be sure. I've also seen some comments about PSU's in the 25A range like "may not be enough for some memory" and things like that."
That URL you posted is a bad link. Is it supposed to be http://www.extreme.outervision.com/psucalculator.jsp ? Isn't there a newer page than that, that has 10k rpm Raptors listed for HD's and memory sizes instead of just # of sticks?
 
Try bumping the DDR voltage, some RAM are unstable at low voltages. According to Corsair, they achieved 3-4-4-8 at 2.8V.

The stick of RAM I was using came up with a bunch of errors in Test #5 until I bumped the voltage up 0.1V.
 
Originally posted by: henryay
Try bumping the DDR voltage, some RAM are unstable at low voltages. According to Corsair, they achieved 3-4-4-8 at 2.8V.

The stick of RAM I was using came up with a bunch of errors in Test #5 until I bumped the voltage up 0.1V.
Click to expand...
I already went through all the voltage changes and a host of other BIOS changes that didn't change anything as far as being able to use a PSU with less than 30A on the 3.3v rail. These sticks wouldn't work very well above 2.85v. These sticks are rated at 2.75v for 3-4-4-8. The only way I was able to get the sticks to run error and crash free was on my current PSU. But, it's turned out to be really crappy one with the stability of a heroin addict on withdrawal....ironically, instability on the 3.3v rail! Asus PCprobe keeps going off warning of the 3.3v down to 3.0v!! I'm on my SECOND ONE and I'm not f**king with this POS brand anymore.
 
Originally posted by: PurdueRy
Originally posted by: computer
:frown:
Click to expand...

you got your answer...its way more than enough for any type of ram...that is not your problem.
Click to expand...

Like I've said 3 times now.....
---------
Like I pointed out, which I guess you missed:
"I should clarify something in case someone thinks I think memory needs ~25A of current...I don't think that. What I need to know is on my platform ( http://www.anandtech.com/mysystemrig.aspx?rigid=25693 ), I have reason to believe that less than 30A on the 3.3v rail is not enough with this memory, but it WAS enough for my PREVIOUS 2x512mb DC kit (Geil PC4000 Ultra Platinum). So if someone can tell me the current (amperage) requirement for this memory, that would help, or, how much more current does the Corsair draw than a typical 2x512mb DC kit."

There ARE more things in a system than memory that use the 3.3v rail.
------------

I know the current is enough for any RAM MODULES, but the PSU is going to have to power more on the 3.3v rail than just the RAM modules alone. Something is not right if I can use a 2x256mb DC memory and a 2x512mb DC memory, but not the Corsair 2x1gb DC kit with PSU's less than 30A on the 3.3v.
 
Originally posted by: computer
Originally posted by: PurdueRy
Originally posted by: computer
:frown:
Click to expand...

you got your answer...its way more than enough for any type of ram...that is not your problem.
Click to expand...

Like I've said 3 times now.....
---------
Like I pointed out, which I guess you missed:
"I should clarify something in case someone thinks I think memory needs ~25A of current...I don't think that. What I need to know is on my platform ( http://www.anandtech.com/mysystemrig.aspx?rigid=25693 ), I have reason to believe that less than 30A on the 3.3v rail is not enough with this memory, but it WAS enough for my PREVIOUS 2x512mb DC kit (Geil PC4000 Ultra Platinum). So if someone can tell me the current (amperage) requirement for this memory, that would help, or, how much more current does the Corsair draw than a typical 2x512mb DC kit."

There ARE more things in a system than memory that use the 3.3v rail.
------------

I know the current is enough for any RAM MODULES, but the PSU is going to have to power more on the 3.3v rail than just the RAM modules alone. Something is not right if I can use a 2x256mb DC memory and a 2x512mb DC memory, but not the Corsair 2x1gb DC kit with PSU's less than 30A on the 3.3v.
Click to expand...

If the Silverstone unit was that far off the voltages something was wrong internally and it did not have to do with taking too much power. Your ram isn't anything special nor is the board you have and plenty of people run them off sub 500 watt power supplies. Just get a quality PSU and see if it works. If it still doesn't I would look elsewhere for your problem.
 
Originally posted by: PurdueRy

If the Silverstone unit was that far off the voltages something was wrong internally and it did not have to do with taking too much power. Your ram isn't anything special nor is the board you have and plenty of people run them off sub 500 watt power supplies. Just get a quality PSU and see if it works. If it still doesn't I would look elsewhere for your problem.
Click to expand...
People just aren't reading. :disgust: 😉 I DO NOT HAVE the Silverstone unit. I have the SINTEK 500SLI as mentioned in my "Rigs". It is the SINTEK with the flaky 3.3v line that I pointed out, but that has nothing to do with this issue since the Sintek CAN RUN this memory FINE. I was only mentioning the crappy Sintek to point out the reason why I need a new PSU. I want to get ANOTHER PSU because OF the flaky 3.3v line on the Sintek. I like the ST50EF-Plus (Silverstone) because it's the only PS that got a "10" at Jonnyguru's site. (At least the only one 500w or above, I did not check the ones less than that). But it has only 25A on the 3.3v rail (the Sintek has 30 or 32A, can't remember now). So, we're back to my original question now of why PSU's I tried on my PC with less than 30A on the 3.3v resulted in memory problems, and some of them were expensive PSU's.
 
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