Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
My OCZ StealthXStream 700w PSU
#1
Anyways, I built my i7 PC in July (specs are in the sig). I got a OCZ StealthXStream 700w PSU w/ it. It appeared to be working fine and all, but recently the fan started running at 100% even when the PSU is ice cold. Then I started experiencing random reboots w/o having the processor on load (random browsing, etc causes a reboot that returns no BSOD and Windows just logs it as Error 41, which just means the sytem shutoff abnormally). I looked around and read about OCZ StealthxStream PSUs having a huge voltage ripple. I don't really know what ripple does. However, people have been saying this 700w PSU only really provides 500w of power. When I did my math, my i7 930 and GTX 480 should have a powerdraw of around 600w including all my other components. I'm just throwing my concerns out there. Now let the suggestions begin.Rolleyes
CPU: i7 930 @ 2.8GHz(Everyday)/3.6GHz(Gaming)/4.0GHz(Encoding)
GPU: Geforce GTX 480 @ 850MHz/1001MHz
Motherboard: ASUS P6X58D-E
RAM: 2x3 6GB OCZ @ 1527MHz 8-8-8-24
Reply

Sponsored links

#2
I did some lookin' and read that those PSUs are "known to have ripple issues at around 600w". Basically, high ripple causes an inconsistantcy and reduces the amount of power the hardware recieves. It can be bad for overclocking and the lifespan of your hardware. Excl

Imagine the Vcore on a graph over a period of time. Normally (or ideally), it would be a straight line. The higher the ripple, the more rippled or "wavy" the line becomes. If the line (or amount of acutal power to be providable) happens to be at a low point when it attempts to raise to the required Vcore at the peak of a clock cycle, that low will be reflected in the maximum. If that lowered maximum happens to be too low for what is required... Well, I think you know what that means. Closedeyes

In the instance of overclocking, the higher ripple will cause the need for overvolting in excess of what would otherwise be unnecessary. Although, this seems a fitting solution to the problem, as mentioned earlier, high ripple is bad for your hardware. In particular, the capacitors that filter ripple will degrade faster and your hardware is sure to fail sooner than it should.
Reply
#3
Oh boy, I guess I need to spend money on that Corsair 750w even if its gonna cost me another 100 dollars.

I'm RMA'ing this anyway, if the OCZ guys let me do it do you think switching to a 750w Fatality would be good?
CPU: i7 930 @ 2.8GHz(Everyday)/3.6GHz(Gaming)/4.0GHz(Encoding)
GPU: Geforce GTX 480 @ 850MHz/1001MHz
Motherboard: ASUS P6X58D-E
RAM: 2x3 6GB OCZ @ 1527MHz 8-8-8-24
Reply
#4
Looks like a winner. It can definitely handle the full 750W (more actually, but I'm not suggesting anything) and was tested at a 45c room temperature (almost twice the standard).

Oh, and no high ripple issue. Smile
Reply
#5
I just have to use my DMM and test the 3 rails and take pics and the OCZ ppl should swap it w/ a 750w Fatality.
CPU: i7 930 @ 2.8GHz(Everyday)/3.6GHz(Gaming)/4.0GHz(Encoding)
GPU: Geforce GTX 480 @ 850MHz/1001MHz
Motherboard: ASUS P6X58D-E
RAM: 2x3 6GB OCZ @ 1527MHz 8-8-8-24
Reply
#6
I would go for the corsair.
[Image: 1454055.png]
Reply
#7
(09-14-2010, 10:19 PM)ChronicNL Wrote: I would go for the corsair.
I would end up w/ a replaced OCZ StealthxStream 700w that'll be gathering dust. I'll try my luck w/ getting OCZ to swap it for a 750w Fatality before thinking about Corsair 750w/850w since it costs me another $100 (where it can be spent else where like my new case, or AC Accelero Xtreme Plus)
CPU: i7 930 @ 2.8GHz(Everyday)/3.6GHz(Gaming)/4.0GHz(Encoding)
GPU: Geforce GTX 480 @ 850MHz/1001MHz
Motherboard: ASUS P6X58D-E
RAM: 2x3 6GB OCZ @ 1527MHz 8-8-8-24
Reply
#8
You could just sell the replaced OCZ.
[Image: 1454055.png]
Reply
#9
I have no idea who would buy PSUs ;o

Anyways, I just did some reading w/ my DMM and took some pics, but these readings are bizarre... I tested the DMM w/ a AAA battery and it reads 2.0-2.1v, but my Analog Multimeter(20 years old), reads 2.0-2.1v too... Weird stuff


[Image: dsc01044j.jpg]
12V Idle

[Image: dsc01052u.jpg]
12V Load

[Image: dsc01049tp.jpg]
5V Idle

[Image: dsc01051uw.jpg]
5V Load
CPU: i7 930 @ 2.8GHz(Everyday)/3.6GHz(Gaming)/4.0GHz(Encoding)
GPU: Geforce GTX 480 @ 850MHz/1001MHz
Motherboard: ASUS P6X58D-E
RAM: 2x3 6GB OCZ @ 1527MHz 8-8-8-24
Reply




Users browsing this thread: 1 Guest(s)