post #11 of 11
Quote:
Originally Posted by asusm View Post
ocz 700w good ennough?

q9450
evga 780i
2* 8800gtx 630/2000

the rest of my rig u can see below
I dunno 2x 8800gtx(or 2x 9800gtx) + 45nm Quad + 780i + unknown # of optical drives + 5 120mm fans + 1 200mm fan + 2x Hard drives + sound card =
You might be close to 400W+ loads when gaming/benching/stress testing, and that's not good with this PSU... Ripple(very high) can damage components.

http://www.jonnyguru.com/modules.php...Story2&reid=24

Quote:
Things were satisfactory until test 3. During test 3, I started to see ripple on 12V1 and 12V2 that was nearly 100mV. By test 5, the ripple was 100mV on 12V3 and 12V4 and had exceeded 100mV on 12V1 and 12V2. By test 6, the ripple on 12V1 and 12V2 had exceeded 150mV.

ATX specification has an "allowance" for 120mV. Mind you, test 6 was very stressful, pushing the power supply to it's limits, but it doesn't change the fact that the ripple exceeded spec and this is the first power supply to date I have had do this.

What's wrong with too much ripple? Well, if the voltage fluctuates too erratically, it can over work other regulators used to provide Vcore to the CPU, GPU, etc.

A representative of OCZ did find my findings concerning and asked that I return the unit for an exchange. I did so, and in the interim I obtained an FSP Epsilon 600W. The 600W version of the power supply the OCZ GameXstream is based on. In testing that unit, I found a good deal of ripple as well. When a brand new GameXstream was finally returned to me, I immediately plugged it in and found the same results as the first sample.

Fortunately, it is very unlikely any of us will have one of these power supplies at or above 400W, at least for any considerable period of time, but this high ripple measurement will be taken into consideration when calculating the performance score.
-EDIT-

I had a GXS700 watt PSU but I decided to downgrade to my current Corsair vx550w PSU... If you decide to switch out PSUs I'd recommend the PC P&C Silencer 750W. $159.99 shipped @ newegg.com
Calculon Ω
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6700 @ 3.7Ghz 1.37V DFI LT X48-T2R vNB 1.24 EVGA 460GTX 4x2GB Patriot 1000mhz CL5 
Hard DriveOSMonitorPower
2x x-25m Vista x64 24" BenQ G2400WD Corsair VX550W 
Case
CM Cosmos 1000 
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Calculon Ω
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6700 @ 3.7Ghz 1.37V DFI LT X48-T2R vNB 1.24 EVGA 460GTX 4x2GB Patriot 1000mhz CL5 
Hard DriveOSMonitorPower
2x x-25m Vista x64 24" BenQ G2400WD Corsair VX550W 
Case
CM Cosmos 1000 
  hide details  
Reply