[citation][nom]rwpritchett[/nom]I liked the article, though it would have been nice to discuss what kinds of low-profile graphics cards could the ISK-310 handle with its 150W PSU. An HD5550 maybe? Could it manage an HD5570? Surely you have some cards laying around you could try.[/citation]
A 5450 lo-pro would work, but it depends on the CPU. Anything above that and you're gonna blow the PSU. Remember that some CPU's are rated up to 135W. If you use something like a 65W, and you consider the drives, the motherboard requirements, RAM, USB devices, etc., and the life-span/efficiency of the PSU, you can't just allow for 150W.
Just FYI though: AMD recommends a MINIMUM 400W PSU for even a 5450. That's for a complete desktop system mind you, but 150W is a huge step down for that.
If you look at
Antec's PSU calculator, without putting any system specs in beyond a baseline mobo config, it sits at 34W. With a 5450 added, it jumps to 96W. So according to Antec, a 5450 uses about 63W by itself. That doesn't leave much headway for the rest of the system. If you used a 45W CPU, you might have enough for a 5450 with a bit of headroom left, but that's assuming the PSU is going to put out 150W of clean power, all the time, which is extremely unlikely. You should include at least a 10-15% low-point buffer in the wattage as a best practise, to allow for capacitor aging. 10% less of 150W is only ~136W. Keep that in mind.
Word of advice: if you want to use a video card, get a case with a bigger power supply (250W+ depending on the card). Check Antec's PSU calculator for more precise requirements of each video card too. Remember that by using a PSU that's less than spec for the card, you're taking some risks with reliability. Mini-ITX components often (but not always) take less power than a comparable desktop. Most of this is attributed to using notebook parts due to the small size of the case though (2.5" hard drives vs. 3.5", slimline ODD's vs. half-height desktop ODD's, LV CPU's, sometimes SODIMM's, etc.)
Also FYI: I built a system with the ASUS 880G Mini-ITX mobo in the ISK-310 with an Athlon II X4 605e and slot-load DVDRW and it's pretty nice as an HTPC. Gaming is okay, considering it's just a Radeon HD 4250 integrated - far better than anything Intel has for integrated video in mini-ITX. I'm curious to know how the new Stars GPU cores are going to perform in the upcoming Llano APU's though. Stars is what they use in the 56x0-series GPU's, so I think that's going to make for an awesome integrated PC if it keeps the same performance as the 5650/5670. Llano is set to replace the current Athlon II X2 and X4 CPU's, so the price will be very reasonable (Athlon II quad cores sell for