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Will a passive 8800GT cause my Corsair 520W to ramp up?

Posted: Tue Dec 18, 2007 2:48 am
by noneedforaname
I'm considering whether it's time to buy a new graphics card, leaning towards getting a passive 8800GT 512 mb.

Currently I'm using an Antec Solo case with two slow fans (92 and 120 mm), which provide relatively little airflow. I'm wondering, therefore, if a passive 8800GT would raise the case temperature and cause my Corsair 520W PSU to ramp up and cause more noise.

Does someone know? Thanks!

Posted: Tue Dec 18, 2007 3:19 am
by Aard
To be able to answer this question properly we would need to know your current system specifcations (to get an idea of current power draw) and also your current temperatures.

Posted: Tue Dec 18, 2007 4:08 am
by johnniecache7
Yes, sure it will . How can it not your adding component that create more heat and draw power it just common sense. I doubt it make notice able different in noise. Depends on what video card you have now but passive video card is forsure going create more heat then active cooled one.

Posted: Tue Dec 18, 2007 4:49 am
by noneedforaname
Aard wrote:To be able to answer this question properly we would need to know your current system specifcations (to get an idea of current power draw) and also your current temperatures.
OK. My system is:

Antec Solo w. 120 mm and 92 mm fan.
Corsair 520W
Asus P5B Deluxe
Intel E6600 at 2.5 GHz (w. Scythe Infinity + 120 mm fan).
Corsair Dominator 2 Gb
Samsung 250 Gb HD
Soundblaster X-Fi
MSI GeForce 7900GS (passive cooling)


I'm not sure about my current temperatures. My fans are set to 5-7 V, that's all I know.

Posted: Tue Dec 18, 2007 5:11 am
by johnniecache7
I do not thing there going be change to your noise level. Considing your specs. I cannot see there being much of difference between passive 7900 GS and 8800 GT.

Posted: Tue Dec 18, 2007 1:52 pm
by LuckyNV
it shouldn't, I have a Q6600 at 3.24GHz (folding 24/7) and 8800GT, during gaming my HX620W doesn't increase in sound
according to corsair

its 18dBA until 40% load, and 23dBA at 50% load

for the HX520W
18dBA 40%
20dBA 50%
23dBA 60%

So the increased load shouldn't cause fan ramping.

Now I know your main worry is the increased heat, Corsair do not supply fan noise vs temp of the unit.

However I can say, in my old case it was a traditional top mounted PSU, the air coming out the back of the unit was quite warm, but no more warmer than I felt with out units. Fan noise was practically non-existant (ear against the PSU)
I switched to a bottom mounted PSU that extracts air from a vent under the case and now the air coming out the rear is very cool to the touch.

Also Corsair units are rated at 50C internal temp (many units only 40 or 45C) and the main capacitor is rated at 105C (many units are only 80C or 85C) so they are quite resilient to heat.

Posted: Wed Dec 19, 2007 4:38 am
by Delta_42
My HX520 is still inaudible in a P180 housing an overclocked E6600 and two HR-03GT clad 8800s, there are four fans in the system, three tri-cools set to low (top, rear and middle drive bay) and one Noctua fan mounted on the CPU cooler, apart from a quiet whoosh from the tri-cools and the odd rattle from the Raptors its quiet.

Posted: Wed Dec 19, 2007 6:14 am
by noneedforaname
Thanks for your help, guys.