-
Hi, this topic ain't dead yet...
at least two questions remained unanswered.
what type of load should one put on the 3.3V if one went full parallel with same models ATX?
what about using AT plus ATX, does it share ground?
- - - - -
it aint all about watts.
I had a better look at power supply Bistro pointed to.
their stabilisation may be a LOT better
over voltage protect?
just look at the range the power supply voltage regulator has...
no wonder they are somewhat pricey...
the one in the big tower is this one http://english.aopen.com.tw/products...0-60bt(PF).htm
when I made some sums, it just seems the ATHLON requires so much power it seriously limits output on +5V for peripherals.
If I want to use as many hard disks as I once did, it looks I am going to be forced to again use the much less powerhungry Piii-600EB...
600EB=roughly 16W compared to about 45W for the athlon...
that's three hard drives difference... during read write on all three..
7W idle, 11W in use per drive (roughly 30 peak at power up)
cut down to 512RAM, frees another ten watt.
yet another drive at idle...
hmmm, I gottta do some more figuring.
they once told me to never add apples and pears, but this math is about
$$$, Watts and innards-space
yup, they's gonna be some A-rythm-antics https://discussions.virtualdr.com/
------------------
it's only FREE advice!
Kind regards, Jaak
VDR SEARCH
-
Now look at those capacitors, looks more like a 3 phase motor startup controller for a single phase line than a ps. https://discussions.virtualdr.com/ The $$$$ for it though. https://discussions.virtualdr.com/
Been thinking maybe you may be wanting to set yourself up a scsi server and net them together. Cheaper? Just a idea. 600Watts ps are probably server stuff, special order at that.
------------------
SMILE
and post back
[ Book mark this post to find it again]
-
All verrry interrresting jt, are you also going to install an air conditioner?LOL https://discussions.virtualdr.com/
------------------
Live like you'll die tomorrow - learn like you'll live forever.
_Junker
-
Hi Junker
No,
would it help?
far as I can tell, I do need approx 150 watt I don't have
A jonker was gentry.
derivative of jong (means young / as in offspring)
------------------
it's only FREE advice!
Kind regards, Jaak
VDR SEARCH
-
hi all
let's try do some rheumy antics
Hi
main concern is still the combined load on 3.3 and +5V
(on which I have 150 watt)
the configuration changed since the athlon has been put in a new motherboard, with DDR and RAID on board....
*3.3/5V & 12V peripherals
= 6 Watt- 14 Watt- scsi plexwriter (values on drive)
= 4 Watt- 08 Watt- scsi harddisk 6.4GB (values on drive)
= 2 Watt- - - - -- floppy drive (no info on 12V, so why does it have 12V??)
= 3.5 W - 08 Watt- REMOVABLE BAY
= 3 Watt- 07 Watt- 40 giga diamondmax during use
= 3 Watt- 07 Watt- 40 giga diamondmax during use
+ 3 Watt- 07 Watt- 40 giga diamondmax during use
+ 3 Watt- 07 Watt- 40 giga diamondmax during use
= 3 Watt- 07 Watt- 30 giga diamondmax during use (source maxtor.com)
- - - - - 02 Watt- a typical fan has less than that
= 4 Watt- 10 Watt- 16X DVD normal (12v=16 Watt peak load)ACER source[/b]
note; 35 Watt per hard drive PEAK on 12V during spin-up
______________________________________________________________
drawing power off motherboard
-- 3.3V -- 5 V - - 12 V - - device ON motherboard
-- total 47 Watt---??----- Athlon 1133 load (some of them early buggers use up to 70W...)
-- total 30 Watt---??----- motherboard (guestimate, no values found, EPOX 8K7a+)
-- total 07 Watt- 04 Watt- ati Xpert 2000
-- total 12 Watt---------- guestimate on old scsi 2940AU PCI
-- total 20 Watt---------- 10W per 128MB (wouldn't DDR use less? Currently 256 DDR)
-- -- -- -- -- -- -- -- -- got a raid/DDR board so I don't need the hotrod in there.
-- total 15 Watt -- -- -- - two NIC and modem
+ playing with the idea to put the hauppage TV primio card in it...
(sound on board)
for hard drives, I took the higher requirement during read write, because I figure that when it does that, it isn't doing a seek. would that be correct?
-seek requires a bit less than read/write-
maxtor source
excerpt = maxtor POWER REQUIREMENTS (Average)
Mode---------+12VDC+-10% - +5VDC +-5% -Power
----------------------------------------------
Spin-up (peak) 2950 mA - - - 430 mA - -41.2 w
Seek - - - - - -550 mA - - - 510 mA - - 9.5 W
Read/Write - - -600 mA - - - 550 mA - -10.0 W
Idle- - - - - - 350 mA - - - 500 mA - - 6.7 W
Standby - - - - -30 mA - - - 150 mA - - 1.2 W
this looks much LESS bleak on the combined maximum load for 3.3V and 5V than it did before, does it not?
(seems I would be only about 25W short on 3.3/5V under normal operation after I add the stuff I want to.)
and have room left on 12V under normal use
(about 80W used)
but what a huge 12V peak-load at spinup...
over 260W PEAK
------------------
+ zero (SCSI CDROM. Currently in use in other machine. It can stay in there...)
+ TWO 7200rpm IDE drives on highpoint (future total of four)
https://discussions.virtualdr.com/ HMMMMM, seems I had better get me larger drives...
= drivecoolers (on 12V)
+ 20 W second stick DDR RAM (currently 256 in one stick)
-------------------
it's only FREE advice!
Kind regards, Jaak
[This message has been edited by jtdoom (edited 08-21-2001).]
