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Anyone built a machine with a J1800 or J1900?

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26 Apr 2014
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These are the new dual and quad-core Celeron onboard things. Mobo, chip and fanless heatsink for £50 doesn't sound bad, plus 10W TDP.

They sound perfect for a low-power server, maybe even a HTPC, but can't see anyone build a runner yet.

The only drawbacks seem to be that the BIOS of most boards is set to Win 8 only (UEFI/fast boot or whatever) and needs to be flashed to support others, and the commonly found mobos only have a couple of SATA ports. Supermicro seem to offer one with 6, but doesn't look like they sell in the UK.

Anyway, low power machine, but more capable than an Atom, and cheap. What's not to like?
 
I had a fanless 300w Silverstone ATX PSU in my HTPC until yesterday, it was on the way out (worked fine when on, but wouldn't wake the system from sleep anymore).

So I swapped it for a 160w PicoPSU.

Hardly empirical testing, but it idles about 6-7w lower and during playback of a recorded program about 8w lower.

Not much, but that equates to about an 11% drop.

Not bad for an old 5050e (45w) with five HDDs (all spun down, granted).
 
tbh said:
The problem is that nobody seems to make quality, high efficiency low wattage power supplies, which seems crazy because I'm sure there is a market for them; I'd love to be able to buy an 80+ gold ~120 watt mini-ITX PSU but such an item doesn't exist.
Click to expand...

Given the fact that so many mini-ITX cases support a full-size ATX PSU, I'm still amazed no one is selling a sub-200w 80+ model. The lowest I could find in a quick scan was 300w, and to go fanless (like my old Silverstone), you're looking at 400w.

I've been unimpressed with the idle power on the AMD chips I've bought (largely because they were cheaper/offered something the Intel ones at the time couldn't).

Mind you, that might be because of the UK power supply being higher to start with (I never got close to Jeff Atwood's power consumption on my AMD build, and I'm envious of the current gen).

I'd certainly like to see more UK-based reviews that compare idle power. Maybe we should start some sort of submission list where we can build a database of power draws.
 
I have a 90w PicoPSU (lowest with a P4 connector) and 84w brick to replace the stock unit in my ISK 300-65 (actually a 135w PSU with a 65w brick).

Will be interesting to see if it lowers the idle usage.

(Bought, incidentally, because I've had a few random shutdowns, probably only a dozen or so in three years. I assumed they were because I was overloading the brick -- my system idles at 45w, so no inconceivable it would overload it -- but subsequent reading suggests the factory power supply is junk and it may well be that.)
 
I decided to replace my 4050e system with a 5350.

I went AMD as they offered a mATX option with more PCI-E slots, which I needed for my HD tuner card and a SATA header card to expand the measly two onboard ports (there are some boards with four - an ASRock I think - but I needed six).

So, I have five HDDs (1*2.5" WD Blue, 4*3.5" WD Green) and an optical drive. I was running it off a 120w PicoPSU with an 84w brick, but currently running off the PSU out of an Antec ISK 300-65 and its 65w brick.

Boots fine, but wall power monitor suggests it spikes to ~90w at startup (I leave it on). With everything spun down it idles at 28-30w. Watching TV/a movie won't push it much above 35w.

For comparison, the old system idled at ~50w.

The stock cooler isn't silent, but fairly quiet (I have all the sides off the case currently and haven't noticed it from a few feet away).

I haven't been able to find any aftermarket coolers yet, but considering I ran my 4050e using a fanless Mini Ninja (and a couple of case fans), I'll hold out for a passive solution.

Feels at least as snappy as my old system (maybe better), records HD no problem, plays back ripped Blu-rays no problem.
 
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