This is different. The card won't drive more than 4 non-Display Port monitors at all. I don't fully understand why, but it seems that DP connections are less arduous than DVI/VGA connections for cards to drive.
This is different. The card won't drive more than 4 non-Display Port monitors at all. I don't fully understand why, but it seems that DP connections are less arduous than DVI/VGA connections for cards to drive.
Yes, it's NUMA rather than SMP. But all the RAM is accessible by all CPUs. Each CPU can access "local" RAM fastest, with slower access to RAM in other "nodes". But each CPU has access to all the RAM, should it require it.
I tend to think in terms of SMP vs. clusters. Where SMP is lots of processors and RAM in one box, where any process can run on any CPU and access all the memory. Whereas a cluster is a maze of twisty little boxes, all alike.
That is a fruitbat of a lot of slots ... but (as I noted) I had intended to exclude server boards.
Yes, it does. My "at any price" remark was meant to stop people saying "Ah, but if 256GB DIMMs were available then I could ...". AFAIK 16GB is as big a DIMM as one can currently buy (and they're around £600 each from Crucial) ... and not all memory controllers support them.
I'd like enough memory to have one bit to model the state of every fundamental particle in the universe ... but I haven't got a universe large enough to put it in ...
Indeed, but I was replying to Nix's remark about
.. and while it's not impossible to build an SMP Opteron system with
2TB+ (128+ slots each holding a 16GB DIMM) I don't know of any hardware than can do it, and I suspect there is very little, if any.There certainly are servers with more total RAM in multiple address spaces, though. As the number of processors/cores accessing RAM increases the memory bus becomes a bottleneck, and you get more efficient memory usage in non-SMP architectures with multiple memory buses. As these new architectures gain importance I'd think it's becoming less and less likely that anyone will build a multi-terabyte SMP system.
Cheers, Daniel.
FWIW I have a Seasonic 330W PSU in a system with an (older model, socket AM2) Athlon X2 4200+ EE in an Asus M2NPV-VM uATX motherboard (with onboard nVidia graphics) with 6GB or RAM. The whole system with a vanilla DVD drive and a single SATA HDD draws a little over 65W at the mains when idle. 330W is really too much ...
Cheers, Daniel.
Except the totally crap way Dell do it. Turn off the monitor and the built-in hub is useless until you force a re-enumeration by disconnecting and reconnecting the USB from the PC.
MBQ
We were somewhere around Barstow, on the edge of the desert, when the drugs began to take hold. I remember Bob Eager saying something like:
In article , Daniel James scribeth thus
Won't harm 'tho will it. I have noticed that overrated PSU's seem to last that bit longer .. in fact a lot longer;!..
Q.. If your PC seems to be drawing just 65 watts why do you think makers do them in the Hundreds of watts range?..
"65 watts When idle"?
In article , Davey scribeth thus
Yes, now what's the watts when there're not idle;?..
The worst case will probably be at power-on, when everything is active at once, including spinning up disc drives, CD/DVD drive, etc. I CBA to find out my power meter but I think I get about 250W drawn from the mains at startup for a system which draws 60W when idle - and that's without a snazzy graphics card etc. My PSU is probably over-specced at
450W but IME the lower powered ones die sooner, as you said !This point about PSU's being very inefficient at low outputs is one I didn't know though. Hmmm.
Nick
They may be inefficient, but:
Just thinking out loud. It's a little like a guy I knew who had a Lotus Esprite, he was worried about whether to buy the sticky-but-short-lived tyres, or the not-so-sticky-but-longer-lived ones. Since he only drove it at weekends, he would probably never get through the first set. QED.
On 18 Mar 2011, Bob Eager spake thusly:
No, something much rarer: a Maltron. I tried using a Model M a few years ago and it was even worse than a normal keyboard: normal keyboards are like hot wires in the back of my hand, the Model M was like running hot lead in my bones.
So, not a Model M fan here. Also they're too noisy: if anyone in my office environment got something that loud I'd have to kill him. Maltrons use Cherry MX Black keyswitches, which are *quiet*.
On 18 Mar 2011, Nigel Wade uttered the following:
Yeah, sorry, I picked the wrong word. I meant *directly* accessible: the other RAM is indirectly accessible.
In article , Nick Leverton scribeth thus
Which is really the point. Whatever the system is doing on "tickover" is not relevant to what its doing under sail when the watts will really be needed...
Dunno really most of the switch mode supplies we use here and there very rarely seem to get hot at all up to their rated loads, unlike the linear versions...
Oi!, it's Esprit:).. Had to sell mine, couldn't fit in it with the advancing years and waist measurement let alone the height...
Dunno .. If you used them like you could you'd get thru them;)..
Haven't seen one of these of any variant around on the roads for quite some time now. I suppose people are preserving them and don't want to risk them being damaged as they didn't hold together all that well in crashes..
Let alone the olde Colin Chapman adage that,
"If it hangs together for more than the one race .. we've built it too well"
Yep, sorry. Got mixed up with my old Sprite. Performance was different, though.
The one I referred to was in fact in Tennessee, and was definitely a second car, for occasional use. The roads around the Saturn car factory grounds were unlimited, for plant employees like the owner, and unoccupied on Sunday afternoons. Fun!
[snip]
A lower-rated PSU might have been a little cheaper, had one been available, and the average current drawn by the system would have been closer to the maximum efficiency point of the PSU ...
All in all it might have saved a couple of beers over the lifetime of the PC.
It'll draw maybe 110W when working hard. I haven't pushed it hard with the meter connected ...
Several reasons, though: Mostly because people don't know how much power a PC is actually going to draw and assume "bigger is better"; partly because people observe that when they buy cheap trashy PSUs they need to get one with a ridiculously high rating just to get stable voltages and low ripple; and partly because some people put a couple of
200W GPUs in their systems while I (like the OP) am using onboard graphics that draws maybe 20W on a bad day.Cheers, Daniel.
Isn't it because the wattage is the total over all the 'rails', but the individual limits on each rail are much lower. Good PSUs will deliver decent wattages over all the rails, whereas poor ones will skew the individual wattages to give the 'best' overall wattage.
At least that's how I understood it, last time I looked at buying PSUs.
Maybe because the low powered ones that you see failing are the very cheap ones.
There are good quality low wattage PSUs, just as for higher wattage. There are, however, a whole lot more cheap, low powered, PSUs. Especially in systems sold by box shifters. A cheap PSU is a simple way of shaving a few pounds off the total cost.
Sometimes people do have more than the one drive, and other stuff still not a lot of difference in price. I paid a bit more to get a quiet one;)..
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