Gtx 460 cooling suggestion

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Im purchasing the gtx 460 tomorrow

but im still using a dell vostro 230 mini tower case , i know this case
provides bad air flow for this card

I am thinking about maximizing the fan speed , leaving a side of the
case opened and underclocking the gpu a little

do these things help cool down the gpu ?
if not what else i can do , im buying an atx haf x mid tower after a

My motherboard is compatible with this graphics card
Pci express 1.0 slot x16 + pci slot x1 , the x1 slot is not used
I have a 700 watt modular power supply with a 6 pin connecter so that
covers everything

im just concerned about the heating

Re: Gtx 460 cooling suggestion

PcGAmeR22 wrote:
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You start by looking at the physical design of the card.

In the picture here, this is a dual slot card, with a
vent in the second slot position. Some of the cooling air
uses the vent. But the casing on the video card, is seldom
air tight, so some of the warm air will escape from around
the card area itself. ?$S640W$

Opening the side of the case, can either be an advantage or a
disadvantage. With the side on the case, the air flow is constrained
to move to the back exhaust vent (air moves in a preferred direction).
And sometimes that's better than just allowing warm air to collect
around the things that get hot.

The card should not overheat immediately. If you're not gaming,
the card temperature should remain at a reasonable level, with
the side cover in place. You can load up your favorite utility
(something like GPU-Z has a temp monitor) and enter a game for
a short time, then alt-tab back to the desktop and check the
video card temperature readout. That will give you some idea
whether things are headed in the wrong direction or not. Programs
like Speedfan also allow readouts, including things like CPU temp
or motherboard temp (if there is an available sensor). So there
are some means to monitor how well it's working. (GPU-Z V0.5.7) (Speedfan 4.45)

If you take the side off, you'd then have the option of pointing
a larger fan at the side of the case. Which would prevent stagnant
air from collecting.

On my current case, the side panel is always off. I keep an
80mm fan mounted under the drive cage, and blowing towards the
video card. And that sweeps warm air away from the video card
area (since the case side is off, the spill air just shoots
out into space).

       video card          80mm         Front of
    F-------------         Fan          Case
       ---                 <-------

(Air shoots out into room...)

So in my case, the video card's own fan, moves the heat from the card,
into the computer case air. And then, the added 80mm fan, blows
fresh air, into the video card area. Note that the 80mm fan just
picks up intake air, from the open area on the casing - it doesn't
have to be mounted in this case, right up against an intake vent
on the front of the case. My cooling solution is only really valid,
for as long as the cover is off the side of the casing.

To keep the fan standing upright, I run a threaded rod through the
back of the case, and the threaded rod fits right through the
mounting hole in the fan. And that prevents the fan from falling
over. It was sheer luck, that my case had the holes that I needed
to do that. Usually, it's tough finding things to secure the
fan with, so it doesn't fall over. (I've used nylon wraps before,
but I don't really like that method all that much.)

That won't solve every possible cooling problem. If the video card
fan and heatsink weren't good enough in the first place, the GPU
can still get pretty damn hot. My solution just moves warm air
away from the vicinity of the video card.


Re: Gtx 460 cooling suggestion

thank you for your suggestions  
is it recommended to do what i wanna do or should i wait for the new
case to come
i really wanna go into the gtx 460 gaming soon

Re: Gtx 460 cooling suggestion

PcGAmeR22 wrote:
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With GPUZ and Speedfan running, you can do a "quick check" and
run a game for a couple minutes and watch the temperature.
If the temperature is getting too high, then you know you need
to wait for the new case.

My video card runs at around 50C when it's flat out, but it's
a gutless card. For my own usage, if I had a better card,
I'd probably be a bit unhappy if it was over about 95C.
The silicon is probably simulated to 105-110, but if you
run it that way for a long time, I bet it doesn't do wonders
for the reliability of the card. Find some reviews for
your new card somewhere, and see what other people see for
temps. If your temps are the same, you're good to go. If
your temps shoot over those numbers, then wait for the new

The reviews on Newegg, may give you some temperature numbers.
Or a good web review may do that also.


With respect to your new case, be aware that the front panel
wiring and pins, may not exactly match a Dell motherboard.
Just so this won't be a surprise when you get there. The
Dell might have a 2x4 pin thing, for the PANEL header. The
retail computer case you're buying, could have a different
pin span on some of the twisted pair connector wires. To modify
the span, you can rewire the polyester plastic shell.

The picture at the bottom of this page, shows how the tab on
the connector bends out, so that you can pull the pin and wire
out of the shell. And that will aid in getting the right "span"
on the twisted pair front panel wiring of your new case. You pull
the wire and pin out, and put it into a different hole, so it
mates with the motherboard properly.


Re: Gtx 460 cooling suggestion

fair enough
does underclocking help in such cases

Re: Gtx 460 cooling suggestion

PcGAmeR22;1324144 Wrote:
> fair enough

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If airflow is restricted, even underclocking might not help, but you can
try it. Step it down in 5-10% increments. If you go beyond 40-50% the
GPU and video ram may become unstable...screen artifacts, etc.

If the card runs hot, wait till ya get the new case.

Re: Gtx 460 cooling suggestion

rb wrote:
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Many years ago, in pure CMOS and with large geometry devices,
the power was a simple function of clock speed. It was
proportional to F*C*V**2. In overclocking/underclocking
situations, you also have the option of adjusting the
voltage. And then the result is, you can do better than
the proportionality in F, in terms of improvement (linear
in F, plus drop the voltage a tiny bit). If you drop the
frequency by 5%, you get a 5% improvement in power, and
then you might be able to adjust the voltage down a tiny
bit and save a percent or two more. That kind of an improvement,
isn't likely to fix a case cooling problem.

In modern small geometry devices, there is leakage current.
That is a small constant term in the equation (F*C*V**2 + Leak).
At 3 microns, the leakage would be zero. For the Intel Prescott
processor, leakage was 25% of the nominal power rating. And
leakage is not proportional to clock rate. So if you'd dropped
the clock rate on the Prescott to zero Hz, the power used would
still be 25% of the nominal value.

Since the Prescott era, improvements have been made in
transistor structures (the structures are more complicated).
This has beaten back the leakage number, such that it's no
longer 25%. The structures used are not a constant. They might
use a leaky structure for a logic path that must go "fast".
And a less leaky structure for the run of the mill stuff.
Maybe the less leaky structures are even gated in some way
(for when the card is idling).

The core of the GPU, runs at around 1.0 volts and up to the
200 amp range, and the voltage adjustments are in pretty
tiny steps (as it affects the stability even in small steps).
You might even find unit to unit variation, in the voltage
setting, but I don't have any details or first hand info
on such things (maybe one card is 1.000V and another card
is 1.050V core voltage). I'm always amazed at how they
can do stuff like that, those huge currents. No room
for mistakes.


Re: Gtx 460 cooling suggestion

thank you
i have the card with me now but i did not unbox it yet
figured it might be better to wait

Re: Gtx 460 cooling suggestion

It's all about airflow, so as long as you don't let the card get too
hot, you'll be ok. :)

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