two GTX 275s on an OCZ 750Watt cutting it close?
Hey all,
I purchased an OCZ 750W psu. I am hoping it will run (2) GTX275's with my current setup in my sig.
What do you think? :)
Am I cutting it close?

Also, are there any specific break-in practices that you guys recommend for power supplies?
Hey all,

I purchased an OCZ 750W psu. I am hoping it will run (2) GTX275's with my current setup in my sig.

What do you think? :)

Am I cutting it close?



Also, are there any specific break-in practices that you guys recommend for power supplies?

AMD Phenom II X4 955 3.2Ghz // Asus M4n98TD EVO BIOS ver. 1301 // 16GB DDR3 (4x4GB) @ 1333mhz // 500GB+250GB+250GB hard drives // EVGA + Zotac GTX 580 1.5GB in SLI // PC Power n Cooling MKII Silencer 950W power supply // Antec 300 case // 2x 22" westinghouse 1920x1080 // win7 home prem sp1 64bit
Wisdom is supreme; therefore get wisdom. Though it cost all you have, get understanding. - Proverbs 4:7
http://www.truthaboutdeath.com/
http://www.sabbathtruth.com/

#1
Posted 04/20/2012 02:01 PM   
right....and beyond that I've got some headroom...but is it enough?
right....and beyond that I've got some headroom...but is it enough?

AMD Phenom II X4 955 3.2Ghz // Asus M4n98TD EVO BIOS ver. 1301 // 16GB DDR3 (4x4GB) @ 1333mhz // 500GB+250GB+250GB hard drives // EVGA + Zotac GTX 580 1.5GB in SLI // PC Power n Cooling MKII Silencer 950W power supply // Antec 300 case // 2x 22" westinghouse 1920x1080 // win7 home prem sp1 64bit
Wisdom is supreme; therefore get wisdom. Though it cost all you have, get understanding. - Proverbs 4:7
http://www.truthaboutdeath.com/
http://www.sabbathtruth.com/

#2
Posted 04/20/2012 05:10 PM   
lol, well sounds like I may be out of luck...eh? /blarg.gif' class='bbc_emoticon' alt=':/' /> I'm hoping I'm wrong, but I may be under the requirements if one takes a 550watt p/s and has a max of 219w...219+219 is already 438watts leaving only 312watts for my system...
any other thoughts that can ease my mind or confirm my fears? lol.
lol, well sounds like I may be out of luck...eh? /blarg.gif' class='bbc_emoticon' alt=':/' /> I'm hoping I'm wrong, but I may be under the requirements if one takes a 550watt p/s and has a max of 219w...219+219 is already 438watts leaving only 312watts for my system...

any other thoughts that can ease my mind or confirm my fears? lol.

AMD Phenom II X4 955 3.2Ghz // Asus M4n98TD EVO BIOS ver. 1301 // 16GB DDR3 (4x4GB) @ 1333mhz // 500GB+250GB+250GB hard drives // EVGA + Zotac GTX 580 1.5GB in SLI // PC Power n Cooling MKII Silencer 950W power supply // Antec 300 case // 2x 22" westinghouse 1920x1080 // win7 home prem sp1 64bit
Wisdom is supreme; therefore get wisdom. Though it cost all you have, get understanding. - Proverbs 4:7
http://www.truthaboutdeath.com/
http://www.sabbathtruth.com/

#3
Posted 04/20/2012 05:41 PM   
alrighty, I went with returning the OCZ and went with this one!
PC Power and Cooling 950W! Crazy single rail 12v at 83.4A! http://www.newegg.com/Product/Product.aspx?Item=17-703-028&SortField=0&SummaryType=0&Pagesize=10&PurchaseMark=&SelectedRating=-1&VideoOnlyMark=False&VendorMark=&IsFeedbackTab=true&Page=2#scrollFullInfo

My question still stands about power supply break-in procedures though. Any thoughts on that folks? Good practices?
alrighty, I went with returning the OCZ and went with this one!

PC Power and Cooling 950W! Crazy single rail 12v at 83.4A! http://www.newegg.com/Product/Product.aspx?Item=17-703-028&SortField=0&SummaryType=0&Pagesize=10&PurchaseMark=&SelectedRating=-1&VideoOnlyMark=False&VendorMark=&IsFeedbackTab=true&Page=2#scrollFullInfo



My question still stands about power supply break-in procedures though. Any thoughts on that folks? Good practices?

AMD Phenom II X4 955 3.2Ghz // Asus M4n98TD EVO BIOS ver. 1301 // 16GB DDR3 (4x4GB) @ 1333mhz // 500GB+250GB+250GB hard drives // EVGA + Zotac GTX 580 1.5GB in SLI // PC Power n Cooling MKII Silencer 950W power supply // Antec 300 case // 2x 22" westinghouse 1920x1080 // win7 home prem sp1 64bit
Wisdom is supreme; therefore get wisdom. Though it cost all you have, get understanding. - Proverbs 4:7
http://www.truthaboutdeath.com/
http://www.sabbathtruth.com/

#4
Posted 04/21/2012 12:32 AM   
When they rate the PSU for the video card, they are taking into consideration the rest of the system (an average system). The original OCZ PSU would have run those cards, IMHO.
When they rate the PSU for the video card, they are taking into consideration the rest of the system (an average system). The original OCZ PSU would have run those cards, IMHO.

http://www.hollywoodpcrepair.com/index.html



https://plus.google.com/113631846936966512572/about?gl=US&hl=en-US



Intel Core i7 X 980 3.33GHz @ 3.3 GHz

eVGA X58 Classified 4-Way SLI motherboard

HAF-X Case, Corsair H80 CPU Liquid Cooler

12GB System RAM

EVGA NVIDIA GeForce GTX 480

KingWin Mach 1 ATX 1220-Watt Power Supply

Western Digital VelociRaptor 10000 RPM hdd



Image

#5
Posted 04/21/2012 03:24 AM   
Nvidia themselves haven't certified any 750W units for GTX 275's in a 2-way config (see [url="http://www.nvidia.in/content/EMEAI/PDF/sli_psu_components/PSU.pdf"][b]here[/b][/url]). That doesn't mean that the OCZ 750W unit wouldn't have supported this setup, but there is strong possibility that you would have had issues, depending on how much power the rest of your system draws of course.

Generally, a quality 850W unit would be recommended for two GTX 275's. I agree with the route you took because now you can rest assured that your 275's won't be starved for power.
Nvidia themselves haven't certified any 750W units for GTX 275's in a 2-way config (see here). That doesn't mean that the OCZ 750W unit wouldn't have supported this setup, but there is strong possibility that you would have had issues, depending on how much power the rest of your system draws of course.



Generally, a quality 850W unit would be recommended for two GTX 275's. I agree with the route you took because now you can rest assured that your 275's won't be starved for power.

EVGA E758 A1 X58 || Core i7 920@4Ghz || OCZ Platinum DDR3 1600 || EVGA GTX 670 SLI || Seasonic X Series Gold 1050w || Corsair 800D || Dual Dell Ultrasharp U2410 displays || Dell Ultrasharp 2408WFP

#6
Posted 04/21/2012 02:44 PM   
Ok, so just plug n play sounds like a good break-in? Maybe I'll leave it on for a day or two huh? Let it "burn in" or whatever?

Also, yeah HOllywood that's what I would've thought, but from that chart that Slammer linked too, I'm glad I went with my decision. It does look like an 850watt is what they recommend at the minimum at least in that chart. I do know that the chart is probably conservative estimates so that users who rely on it won't run into issues most of the time.
Ok, so just plug n play sounds like a good break-in? Maybe I'll leave it on for a day or two huh? Let it "burn in" or whatever?



Also, yeah HOllywood that's what I would've thought, but from that chart that Slammer linked too, I'm glad I went with my decision. It does look like an 850watt is what they recommend at the minimum at least in that chart. I do know that the chart is probably conservative estimates so that users who rely on it won't run into issues most of the time.

AMD Phenom II X4 955 3.2Ghz // Asus M4n98TD EVO BIOS ver. 1301 // 16GB DDR3 (4x4GB) @ 1333mhz // 500GB+250GB+250GB hard drives // EVGA + Zotac GTX 580 1.5GB in SLI // PC Power n Cooling MKII Silencer 950W power supply // Antec 300 case // 2x 22" westinghouse 1920x1080 // win7 home prem sp1 64bit
Wisdom is supreme; therefore get wisdom. Though it cost all you have, get understanding. - Proverbs 4:7
http://www.truthaboutdeath.com/
http://www.sabbathtruth.com/

#7
Posted 04/22/2012 02:17 AM   
I would think the UPS is drawing way more than the PC. A UPS is always on, always charging, and does not care what is plugged into it; it doesn't regulate itself; it is just there to provide full, clean power for whatever is demanding it. I would think your electric bill would dip back down without the UPS. When you are on the UPS you are actually on the battery all of the time, that's why they are able to warrant against power surges, and why you never miss a beat when the power goes off -- because you are never really on the wall power, you are always on the battery. That's also why the batteries don't last all that long.
I would think the UPS is drawing way more than the PC. A UPS is always on, always charging, and does not care what is plugged into it; it doesn't regulate itself; it is just there to provide full, clean power for whatever is demanding it. I would think your electric bill would dip back down without the UPS. When you are on the UPS you are actually on the battery all of the time, that's why they are able to warrant against power surges, and why you never miss a beat when the power goes off -- because you are never really on the wall power, you are always on the battery. That's also why the batteries don't last all that long.

http://www.hollywoodpcrepair.com/index.html



https://plus.google.com/113631846936966512572/about?gl=US&hl=en-US



Intel Core i7 X 980 3.33GHz @ 3.3 GHz

eVGA X58 Classified 4-Way SLI motherboard

HAF-X Case, Corsair H80 CPU Liquid Cooler

12GB System RAM

EVGA NVIDIA GeForce GTX 480

KingWin Mach 1 ATX 1220-Watt Power Supply

Western Digital VelociRaptor 10000 RPM hdd



Image

#8
Posted 04/22/2012 02:30 AM   
Yep, Hollywood is right, those things run batteries down like crazy because they are always charging that battery to full capacity, and if your using your comp, you are always draining the battery. Probably draining it at a nice rate too w/ your beefy system. :)
Yep, Hollywood is right, those things run batteries down like crazy because they are always charging that battery to full capacity, and if your using your comp, you are always draining the battery. Probably draining it at a nice rate too w/ your beefy system. :)

AMD Phenom II X4 955 3.2Ghz // Asus M4n98TD EVO BIOS ver. 1301 // 16GB DDR3 (4x4GB) @ 1333mhz // 500GB+250GB+250GB hard drives // EVGA + Zotac GTX 580 1.5GB in SLI // PC Power n Cooling MKII Silencer 950W power supply // Antec 300 case // 2x 22" westinghouse 1920x1080 // win7 home prem sp1 64bit
Wisdom is supreme; therefore get wisdom. Though it cost all you have, get understanding. - Proverbs 4:7
http://www.truthaboutdeath.com/
http://www.sabbathtruth.com/

#9
Posted 04/22/2012 12:00 PM   
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