mersenneforum.org  

Go Back   mersenneforum.org > Great Internet Mersenne Prime Search > Hardware

Reply
 
Thread Tools
Old 2011-01-19, 03:00   #56
KingKurly
 
KingKurly's Avatar
 
Sep 2010
Annapolis, MD, USA

101111012 Posts
Default

Quote:
Originally Posted by Christenson View Post
Is a DVD reader on the far side of the USB port going to be enough to load Windows, or do I need to get a DVD drive on the PATA or SATA socket on these motherboards? Do they do USB flash drive boots?
The DVD reader attached via USB should be okay. A DVD drive on PATA/SATA would work also, but shouldn't be strictly necessary. And a USB flash drive should work too!
KingKurly is offline   Reply With Quote
Old 2011-01-19, 05:03   #57
sdbardwick
 
sdbardwick's Avatar
 
Aug 2002
North San Diego County

5×137 Posts
Default

I own a 1090T, and I won't be purchasing another 6 core AMD. The performance (and especially performance/watt) of Sandy Bridge is more compelling.
Now if AMD produces 8 core Phenom IIs at 1090T prices, I will need to rethink my position.
For some data, I did a Google Docs spreadsheet a while back.

Last fiddled with by sdbardwick on 2011-01-19 at 05:04
sdbardwick is offline   Reply With Quote
Old 2011-01-19, 07:06   #58
Rodrigo
 
Rodrigo's Avatar
 
Jun 2010
Pennsylvania

3A616 Posts
Default

Quote:
Originally Posted by mdettweiler View Post
Come to think of it, I did something similar when I upgraded a laptop from 98 to 2000 a while back. It worked, but I ended up with a weird same-partion dual-boot setup.
mdettweiler,
I meant to say before that this was a very, umm... unexpected outcome!

Rodrigo
Rodrigo is offline   Reply With Quote
Old 2011-01-19, 07:11   #59
mdettweiler
A Sunny Moo
 
mdettweiler's Avatar
 
Aug 2007
USA (GMT-5)

186916 Posts
Default

Quote:
Originally Posted by Rodrigo View Post
mdettweiler,
I meant to say before that this was a very, umm... unexpected outcome!

Rodrigo
Hmm...now that I think about it, I believe it gave me the choice of whether to keep the existing Windows install (thus creating a dual-boot setup) or replace it. I chose to keep it because I was a little curious how it would turn out. (In the end, I'm glad I did, since the computer really had too little RAM to run Windows 2000 very well, so I ended up going back to 98 much of the time because it at least wasn't constantly crawling along while it thrashed the hard disk trying to frantically move stuff in and out of the pagefile.) Anyway, indeed, you're right, this is not normally the way it would turn out.
mdettweiler is offline   Reply With Quote
Old 2011-01-19, 22:44   #60
Christenson
 
Christenson's Avatar
 
Dec 2010
Monticello

5·359 Posts
Default

Now the case that was suggested has, like most electronic components, gone out of stock...possibly permanently.
Why would I want the PFC "green" power supply over a case with a standard power supply already inside at 450W?
Christenson is offline   Reply With Quote
Old 2011-01-19, 23:20   #61
lavalamp
 
lavalamp's Avatar
 
Oct 2007
Manchester, UK

22×3×113 Posts
Default

Because you want a good power supply. If you buy a cheap case+PSU combo, they'll both have been made for absolute peanuts.

Such PSUs are liable to be noisier, supply dirty power*, fail sooner and/or cause other components to fail prematurely or when the PSU fails (ie: it'll take them with it).

*By dirty power, I mean things such as:
  • more AC ripple in the voltages, you want as flat and as steady a voltage as possible
  • more prone to swings in voltage when the load changes
  • further away from the desired voltages (12V, 5V, 3.3V).
The ATX specification allows for 5% deviation in 12, 5 and 3.3 V lines, and these are where almost the entire load of the PC hangs from. Good PSUs will deliver voltages that are pretty much bang on, even under varying loads and at high temperatures, lesser PSUs may not.

Every component in your case depends on the power from the PSU, which is why it's important to choose a solid brand.

If the case happens to have a good PSU in, then there's no problem, but the vast majority of bundled PSUs are absolutely pants.

Last fiddled with by lavalamp on 2011-01-19 at 23:22
lavalamp is offline   Reply With Quote
Old 2011-01-20, 00:03   #62
Rodrigo
 
Rodrigo's Avatar
 
Jun 2010
Pennsylvania

2·467 Posts
Default

Quote:
Originally Posted by lavalamp View Post
By dirty power, I mean things such as:
  • more AC ripple in the voltages, you want as flat and as steady a voltage as possible
  • more prone to swings in voltage when the load changes
  • further away from the desired voltages (12V, 5V, 3.3V).
The ATX specification allows for 5% deviation in 12, 5 and 3.3 V lines, and these are where almost the entire load of the PC hangs from. Good PSUs will deliver voltages that are pretty much bang on, even under varying loads and at high temperatures, lesser PSUs may not.
lavalamp,

I don' thave much experience (all right, none) putting together a system. Suppose that I were going to. In that case, is there a way to research this voltage variability issue for a particular PSU model that one might be considering, or is it better to go by the brand?

Rodrigo
Rodrigo is offline   Reply With Quote
Old 2011-01-20, 01:49   #63
lavalamp
 
lavalamp's Avatar
 
Oct 2007
Manchester, UK

101010011002 Posts
Default

I tend to just go by brand, Seasonic, Enermax, Tagan, and a few others.

However, before buying a particular PSU (or any component really), I do google around for reviews. Try and find an actually useful review if you can, this article explains what a non-useful review is:
http://www.hardwaresecrets.com/article/410

The same site has a list of power related articles, many of them reviews:
http://www.hardwaresecrets.com/page/power

Honestly I wouldn't sweat it too much though, if you stick to the name brands you should be fine. The standard of PSUs has GREATLY improved since about 2005/6 when Tom's Hardware did some full load 24/7 PSU stress tests and several of them died.
lavalamp is offline   Reply With Quote
Old 2011-01-20, 04:49   #64
Rodrigo
 
Rodrigo's Avatar
 
Jun 2010
Pennsylvania

2·467 Posts
Default

Thanks for the tips, lavalamp.

BTW, fantastic website you pointed me to -- I've added it to my Favorites!

Rodrigo
Rodrigo is offline   Reply With Quote
Old 2011-01-20, 06:27   #65
Christenson
 
Christenson's Avatar
 
Dec 2010
Monticello

179510 Posts
Default

Lava, thanks...

Went ahead and ordered a case with a fan, the good PSU, and the 6-core Phenom II, motherboard, memory, heatsink is on the way, with some additional parts....heat sink grease (though I have the plain stuff and the x2 stuff at work), screen (biggest $$), and network parts.

Left out the Windows disk...I'm going to see if I can make this box live under Ubuntu; the boot CD just popped out of the burner. You will know I've succeeded when my ECM rank starts improving dramatically.

Decided to buy two of the cheap HDs, one for later or if the first one is DOA. I may get that second box yet...

P.S. Newegg policy is to only accept "non-useful" reviews...see the notes in terms of service about direct comparisons to competitors....

Last fiddled with by Christenson on 2011-01-20 at 06:28
Christenson is offline   Reply With Quote
Old 2011-01-20, 10:49   #66
lavalamp
 
lavalamp's Avatar
 
Oct 2007
Manchester, UK

22·3·113 Posts
Default

Alright, should be a fun time this weekend assembling it all.

Take some pictures! Those parts will never be that shiny again.
lavalamp is offline   Reply With Quote
Reply



Similar Threads
Thread Thread Starter Forum Replies Last Post
CPUs assigned houding Hardware 10 2015-03-25 00:33
Number of CPUs to use houding Software 3 2015-02-26 19:56
cpus running at 10% wildrabbitt Information & Answers 9 2015-01-20 13:31
Whither Older CPUs? Rodrigo Operation Billion Digits 4 2010-10-20 15:12
A tale of 3 CPUs chris2be8 Hardware 7 2010-07-20 23:12

All times are UTC. The time now is 19:44.


Sun Aug 1 19:44:36 UTC 2021 up 9 days, 14:13, 0 users, load averages: 1.06, 1.23, 1.46

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.