From your link, and going to the more expanded specs from the Rosewill page:
http://www.rosewill.com/products/1799/ProductDetail_Overview.htm
“Active-PFC with auto AC-input voltage adjustment(100-240V)”

It appears that your PSU is equipped with Active PFC (Power Factor Correction), so it falls under the second example I’ve posted above.

To be safe, you’d require a higher VA rating UPS to handle the power. A 1.6 to 2KVA as Unaccptable noted should be sufficient, for the load. That would cover your capacity (load) needs, and run time would ofc depend on battery(s) Ah size.

In addition, due to the PFC, the UPS would need to be “highend/smart” or closer to true sine wave output.


This maybe of help: https://www.dougv.com/2010/03/01/active-pfc-enabled-psus-are-not-compatable-with-most-low-end-ups/
“In short, if you send a high-end PSU the current created by a lower-end UPS, the PSU’s built-in power factor correction hates it, and cuts power to the PC immediately. As in, the exact thing you bought the UPS to prevent in the first place is exactly what happens.

While I understand the value in having a high-performing PSU — less heat, more power, protection for internal components — a straight-up power off of the PC is never a good thing. So your choices are either to forgo a UPS, purchase a really expensive UPS, or purchase a low-cost PSU”

It may depend among other things, on the specs of your power supply. Is it Power Factor Corrected Power supply?

As an example:
From: http://www.pcguide.com/ref/power/ext/ups/funcSizing-c.html

“ Let's say we have a 650 VA UPS. The wattage limit is not specified, so to be safe, we use 60%, which yields a limit of 390W. This means any load we run cannot exceed either 650 VA or 390 W. Some sample power supply loads:
•   Regular Power Supply, 500 VA Rating: A regular power supply with a rating of 500 VA will run fine on this UPS, because its power factor is probably about 60%, much as the UPS manufacturer assumed (but you should check its specifications, if you can.). Even if the power factor is 70%, that's still 350 W, under the UPS's limit.
•   Power-Factor-Corrected Power Supply, 500 VA Rating: Some power supplies have circuitry added to them that corrects the power factor to approximately 100% (sometimes called power factor 1). In this case the power supply will have a 500 VA rating and also a 500 W rating. This power supply will overload the UPS we are discussing here because its W rating is too high.”

See also: Capacity and Run Time
http://www.pcguide.com/ref/power/ext/ups/funcCapacity-c.html

I hope this helps

First, it would be much appreciated if you keep your offensive labeling remarks (Cry babies)to your self. No one attacked you personally.

Second, the block chain now is a true issue. It takes over 3 days to download and install the client - as of a couple of weeks ago- and that is NOT because of HDD space, inet speed or computing power or RAM. (syncing also takes considerable time if you skip a couple of days) Try this for Grandpa, Grandma, Dad, Mom and so on. 5-6 wallets in a household, it is a bit discouraging, as I said it is a concern at least for now.

If that is fixed in the future than it’s ok. But now it is a drawback for the average person trying to get into it, using the most secure client/wallet. Also as I noted above some confirms take over an hour for the first, and that is another drawback.

Let’s keep the discussions civil.

Total blackout, is a rather extreme case, yes it could happen, (EMP, CME X class, circa 1859 etc). Then, does it really matter? Any and all fiat currencies will collapse. Will the ATMs be operational?
Will the banks have access to people’s accounts? The most likely currency in such a case, would be water, food, fuel, guns, ammo, other resources, and maybe gold, silver. People would be in survival mode and instinct response.

In the mean time, a concern would be the block chain size (for most of the people who want the original most secure client/wallet), and of course the time to get confirms, some take hours!
Time will tell.

It took about 3 days total running time to download the client.
274118 Blocks of Transactions
 A little over 14 Gig of memory.

In regards to online/light wallets, again it's security vs convenience. An attacker(s) would most likely go first after where the big loot is (online storage as noted in a sample of links - first post) and second after individuals.

Some of  most secure option from what I've read so far point towards, dedicated computer (keep it off line when not transacting) USB storage - remove wallet.dat from main, and recopy when transact then remove?, and paper.

Thanks for the replies.

>- Downloading using the Bitcoin-Qt option for windows, from the http://bitcoin.org/en/ site. <<

It’s been 24 hours now and it is down to 30 weeks left from 256 when it started. But the rate is not linear. It almost appears to slowing down the same as the difficulty graphs. It took about 12 hours from 256 to 62, then 12 more hours from 62 to 30. The bar at the bottom of the gui is less than ¼ full, so it should take about 4 days maybe more for the whole chain to be done.

Notebook, clean installed OS. Dedicated internet access 15Mbps. Cpu running at less that 30% avg, Low RAM usage less than 1 gig usage. Hard drive seems to be running quite a bit but expected.

I can see how this part of the process to get involved with Bitcoin can be cumbersome and unappealing to the average person out there, even prohibitive.

Unless a solution is found, with the present rate, let’s say in the near future, according to this: https://en.bitcoin.it/wiki/Talk:Scalability#Disk_space
Terrabites will be needed vs 15-20 Gigs of storage (today), and one can only speculate how long will it take to get the client synchronized.

Even if you do this, with present hardware, unplug it and store it for a year, then how long will it take to resynchronize the last 52 weeks at the new difficulty levels/chain sizes?

Searching on the net there is a lot of talk about security, and that this is the better way to get involved. (downloading the original as it was meant to be,  Bitcoin-Qt)
     An online wallet is much easier and faster, but if one is thinking of getting involved with more than few hundred or few thousands USD, he/she would be somewhat apprehensive about the security issues, especially in view of all the hacking and funds disappearing from a great number of sites.

A recent example:
https://truthnewsinternational.wordpress.com/2013/12/03/the-heist-of-96000-bitcoins-us-103296000-or-e-76416000/

List of Bitcoin Heists - link from this forum:
https://bitcointalk.org/index.php?topic=83794.0

Hopefully the next version will be solving some of these issues.

Right now, just to get the feet wet, few bucks and an online site might be the easiest way to start involvement.

I wonder, how would a restaurant, or a coffee shop, handle the confirmation times. Some transactions take over 30 minutes to get the first confirm done let alone 3 or 6 confirms as some suggest.

Assuming there are no worries about snooping, forced phone cloning, other surveillance/security issues etc.

That would work. Thank you all for the replies.

Trying to balance security along with convenience…

Ok, to spend it from the home computer where the BTC client is installed is fairly easy. Plug in the address an send it.

But how do you pay with bitcoin at a restaurant that accepts it?
Do we install it on a usb and plug it in the restaurant’s computer? Same with a coffee shop? Grocery store?

It sounds a bit cumbersome. Any other easier/faster was to do it?
Thanks

Ok, got it

Thanks for the quick replies !

It seems as the weeks get closer to recent, it takes more time to download.

Should I wait for the next 0.8.6 version ? as shown here: https://bitcointalk.org/index.php?topic=359963.0

Hi folks,
I’m downloading the Bitcoin-Qt from http://bitcoin.org/en/download

On that page it shows version Latest version : 0.8.5
When I check the help tab/about on the GUI it shows :
This program uses Qt version 4.8.3

How can I get the latest 0.8.5 ? what am I missing?
Thanks

ps: total weeks to download 256