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Post your Rig [Will it run SC2? - Page 72

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KOFgokuon
Profile Blog Joined August 2004
United States14893 Posts
January 24 2010 06:20 GMT
#1421
Does anyone have an opinion on power supply calculators? For example, http://extreme.outervision.com/psucalculatorlite.jsp

I entered my build (based on an i5-750 overclocked to 3.5 ghz with 1.4 voltage [more than in reality] and a 5850), and it says that I only need a 350 watt power supply, some previous advice in this thread or elsewhere said that an i5-750 and a 5850 could use almost 400 W or more on its own, I guess my question is how accurate are these calculators?
FragKrag
Profile Blog Joined September 2007
United States11552 Posts
January 24 2010 06:29 GMT
#1422
An i5 750 + 5850 uses around 300-350W if they aren't overclocked.
*TL CJ Entusman #40* "like scissors does anything to paper except MAKE IT MORE NUMEROUS" -paper
semantics
Profile Blog Joined November 2009
10040 Posts
Last Edited: 2010-01-24 07:04:13
January 24 2010 07:03 GMT
#1423
1 high end gpu and high end cpu and overclock with just a few things like 2 ram sticks and other things like sound card etc now of days can fit in a 500w easily with enough over head for the oc.

You realize that the psu is most effectiveness at like 60% usage and so that where i'd aim for 90% of your usage because outside of a benchmark the gpu will never be under 100% actual draw all the way same as a cpu in games for the most part so you just have to worry about peak usage and you're solid.
FragKrag
Profile Blog Joined September 2007
United States11552 Posts
January 24 2010 07:17 GMT
#1424
yeah but those spikes in power are what mess up the power supply usage
*TL CJ Entusman #40* "like scissors does anything to paper except MAKE IT MORE NUMEROUS" -paper
ghermination
Profile Blog Joined April 2008
United States2851 Posts
January 24 2010 07:40 GMT
#1425
On January 24 2010 16:17 FragKrag wrote:
yeah but those spikes in power are what mess up the power supply usage

Actually, not really. If a power supply under normal gaming runs at, say, 80% usage, (and i'll use a 4870 since i remember it's power draw off the top of my head) this would draw roughly 120 watts of power. When it moves up to 100% in synthetic benchmarks, getting up to around a peak power draw of 160 watts or so, this doesn't make much of a difference for the system power load, at least in wattage. You will only have problems with power overdraws and freezes etc if your power supply is severely under specifications. For example, when i first put together my 2x gtx295 system, i only had an 800 watt modular PSU, so it couldn't handle the draw along with an i7 920 and other stuff.
U Gotta Skate.
FragKrag
Profile Blog Joined September 2007
United States11552 Posts
January 24 2010 08:01 GMT
#1426
well if you're trying to cut corners, the bit of the peak is what catches you :p
*TL CJ Entusman #40* "like scissors does anything to paper except MAKE IT MORE NUMEROUS" -paper
LxRogue
Profile Blog Joined March 2007
United States1415 Posts
Last Edited: 2010-01-24 10:58:28
January 24 2010 10:54 GMT
#1427
On January 24 2010 15:20 KOFgokuon wrote:
Does anyone have an opinion on power supply calculators? For example, http://extreme.outervision.com/psucalculatorlite.jsp

I entered my build (based on an i5-750 overclocked to 3.5 ghz with 1.4 voltage [more than in reality] and a 5850), and it says that I only need a 350 watt power supply, some previous advice in this thread or elsewhere said that an i5-750 and a 5850 could use almost 400 W or more on its own, I guess my question is how accurate are these calculators?


Did you include a hard drive? DVD drive? Other peripherals? These things can add up.

I forget my exact PSU wattage, but my specs are a bit lower than yours, and I have around 500W. I wouldn't get less than that.

Also wattage isn't everything. Some brands have much better reps for being efficient than others; read the reviews. You also have to be careful that the PSU comes with enough connectors.
KOFgokuon
Profile Blog Joined August 2004
United States14893 Posts
January 24 2010 14:47 GMT
#1428
Of course I added them, like I said i entered the specs built based around an i5-750 and a 5850. This computer is already built, but i'm running a 9600 GSO right now while waiting for a 5850 price drop, and i'm analyzing whether I need to get a new power supply if I upgrade my video card.

The build is this http://www.teamliquid.net/blogs/viewblog.php?topic_id=108310
And the wattage (with a 5850) came out to 350, so this seems a little borderline.
ghermination
Profile Blog Joined April 2008
United States2851 Posts
January 24 2010 17:50 GMT
#1429
I wouldn't got with the 500w, only because it just seems slightly too low for me, and it's always better to have a hundred watts or so of headroom not only for when you ugprade but also to make sure you don't have too little. Maybe go with this Diablotek power supply? I've used the exact model as well as other in the series probably ten or fifteen times in builds, i love Diablotek and they've never let me down.
650w Diablotek PHD series power supply, $43.60. Proof that quality=/=expense
http://www.newegg.com/Product/Product.aspx?Item=N82E16817822004&cm_re=diablotek_phd-_-17-822-004-_-Product
U Gotta Skate.
FragKrag
Profile Blog Joined September 2007
United States11552 Posts
January 24 2010 18:52 GMT
#1430
Does it not have a 12V rail?
*TL CJ Entusman #40* "like scissors does anything to paper except MAKE IT MORE NUMEROUS" -paper
ghermination
Profile Blog Joined April 2008
United States2851 Posts
Last Edited: 2010-01-24 19:08:35
January 24 2010 19:06 GMT
#1431
On January 25 2010 03:52 FragKrag wrote:
Does it not have a 12V rail?

The information isn't available on newegg.
I have the box of one right here, the (single) +12v rail is at 48a. 140mm fan, the power supply itself just feels very well put together, it's very solid and painted with some polish so it feels very smooth. Looking inside, i can see a mix of Ferrite chokers and Iron resistors.
U Gotta Skate.
FragKrag
Profile Blog Joined September 2007
United States11552 Posts
January 25 2010 07:42 GMT
#1432
Heh I wish I could SLi PSUs T_T
*TL CJ Entusman #40* "like scissors does anything to paper except MAKE IT MORE NUMEROUS" -paper
semantics
Profile Blog Joined November 2009
10040 Posts
Last Edited: 2010-01-25 11:05:51
January 25 2010 11:05 GMT
#1433
On January 25 2010 16:42 FragKrag wrote:
Heh I wish I could SLi PSUs T_T

you can use more then 1 psu nothing is stopping you besides finding where to put it they used to seel those gpu psus only that fit into your 5" rom drives bays lol when the 8800 and the 7950GX2's etc came out
Ecael
Profile Joined February 2008
United States6703 Posts
January 25 2010 15:59 GMT
#1434
On January 24 2010 15:10 FragKrag wrote:
http://secure.newegg.com/WishList/PublicWishDetail.aspx?WishListNumber=17216647

I think this build will stay relatively stable until April :D!

Decided to go with a 750W psu so there are more options with xfire

Are you content with the price as it is or are you counting on the savings that's bound to come with combo deals and such, heh. Like how 23" monitors will just randomly drop to $150 or so on newegg.
FragKrag
Profile Blog Joined September 2007
United States11552 Posts
January 25 2010 16:01 GMT
#1435
yeah I'm going to modify it based on the savings that randomly occur on newegg but for now that is the basis.
*TL CJ Entusman #40* "like scissors does anything to paper except MAKE IT MORE NUMEROUS" -paper
Undisputed-
Profile Blog Joined September 2008
United States379 Posts
January 25 2010 19:43 GMT
#1436
OS: Windows 7 64bit
Cpu: i5-750
Mobo: ASUS P7P55D-E Pro ATX Intel Motherboard
Memory: G.SKILL Ripjaws Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)
Graphics: SAPPHIRE 100282SR Radeon HD 5850 1GB
Hard Drive: SAMSUNG Spinpoint F3 500GB 3.5" SATA 3.0Gb/s
PSU: CORSAIR CMPSU-750TX 750W
Underlying most arguments against the free market is a lack of belief in freedom itself.
FragKrag
Profile Blog Joined September 2007
United States11552 Posts
January 25 2010 19:44 GMT
#1437
Why the Samsung HDD?
*TL CJ Entusman #40* "like scissors does anything to paper except MAKE IT MORE NUMEROUS" -paper
Undisputed-
Profile Blog Joined September 2008
United States379 Posts
January 25 2010 19:47 GMT
#1438
On January 26 2010 04:44 FragKrag wrote:
Why the Samsung HDD?


It's one of the fastest HDD available and can't beat the price.
Underlying most arguments against the free market is a lack of belief in freedom itself.
FragKrag
Profile Blog Joined September 2007
United States11552 Posts
January 25 2010 19:55 GMT
#1439
Oh it's a 1 platter 500gb
*TL CJ Entusman #40* "like scissors does anything to paper except MAKE IT MORE NUMEROUS" -paper
Undisputed-
Profile Blog Joined September 2008
United States379 Posts
January 25 2010 20:06 GMT
#1440
On January 26 2010 04:55 FragKrag wrote:
Oh it's a 1 platter 500gb


yep
Underlying most arguments against the free market is a lack of belief in freedom itself.
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