2 x 120mm Lian Li V1000 case fans (plus PCU fan) enough for SLI?
HI, thinking of getting an i7 950 system with 12g of RAM (HD editing) with 2 x GeForce GTX 460 cards in SLI. Obviously the cards have their own fans and I'll have a fan on the CPU. But will 2 x 120mm case fans be enough (1 front and 1 back)? Don't plan to overclock.
All depends on the ambient room temp, internal case temp, whether or not the cards are self-exhausting, their slot spacing, and other factors. Really, unless someone already has such a configuration, you're pretty much in a trial and error situation.
Regardless, when it comes to air-cooling, I prefer and recommend filtered positive-pressure air-cooling configurations. Loosely translated, it's a configuration that has slightly more air being pushed in than their is being pulled out. Also, all intake ports have a removable dust filter. No case is airtight, so the extra positive-pressure will find a vent or crack to leak out of the case.
In a negative-pressure setup, vents and cracks allow air in, which often leads to dust build-up that slowly reduces the amount of air that can enter the case. Also, cracks are virtually impossible to filter, so dust will enter the case's interior. Interior dust will build-up on the various internal heatsinks, thus reducing their cooling effectiveness and efficiency.
Here's a link explaining it better, along with picture examples: http://www.demcifilter.com/filters_performance.php#positive_pressure
I think the case will work.
It is a nice, well ventilated case, just not a lot of fans.
I assume you own it, otherwise, there are better cooling lian li cases available.
If you only need one external 5 1/2" bay, you could add a front intake 120mm intake fan.
Something like this:
I think scythe also makes a simpler, and cheaper version called kama bay.
For sli, pay particular attention to the motherboard, and where the two pcie-x16 slots are located.
In many motherboards, the two cards will be located next to each other, and the top card will run hot.
Find a motherboard where the slots have a bit more separation.
If you own the GTX460cards, then fine. If not, I think things would be simpler using a single stronger card.
Also, why the i7-950? Sandy bridge cpu's are much stronger and cheaper. A basic 2400 can compete with a i7-980.
A 2500K with a mild OC would be much better.
For your editing, you could get a full 16gb(4 x 4gb)
Tells you why here