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. 1101 // 16GB DDR3 (4x4GB) @ 1333mhz // 500GB+250GB+120GB hard drives // GTX 460 786MB // PC Power n Cooling MKII Silencer 950W power supply // Antec 300 case // 19" westinghouse 1440x900 + lcd 19" 1280x1024 // 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   
[quote name='BigCee' date='20 April 2012 - 07:01 AM' timestamp='1334930517' post='1398712']
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?
[/quote]
well per Nvidia just 1 GTX 275 needs a 550watt psu so take it from there.
[quote name='BigCee' date='20 April 2012 - 07:01 AM' timestamp='1334930517' post='1398712']

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?



well per Nvidia just 1 GTX 275 needs a 550watt psu so take it from there.

Corsair C70 case, ASUS Sabertooth X58,Intel i7 970 6 core cpu, 24gigs Avant memory, PNY GTX 680 4GB, Corsair AX1200 psu with sleeved cables, Sound Blaster Z, 2 LG Blu-Ray, 2 Crucial M500 120GB SSD, 1 Seagate 500GB HDD, 1 Western Digital VelociRaptor 1TB HDD, Microsoft SideWinder X4 keyboard, Corsair M65 mouse, Xbox 360 controller, Logitech 5.1 speakers, LG 27" IPS LED monitor, 3 Noctua 120mm fans, 2 Noctua 140mm fans, 1 Noctua 92mm fan, Noctua NH-C12P SE14 140mm SSO cpu cooler. Windows 7 Pro 64 bit. GPU has a small overclock by me.

#2
Posted 04/20/2012 04:46 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. 1101 // 16GB DDR3 (4x4GB) @ 1333mhz // 500GB+250GB+120GB hard drives // GTX 460 786MB // PC Power n Cooling MKII Silencer 950W power supply // Antec 300 case // 19" westinghouse 1440x900 + lcd 19" 1280x1024 // 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 05:10 PM   
[quote name='BigCee' date='20 April 2012 - 10:10 AM' timestamp='1334941838' post='1398785']
right....and beyond that I've got some headroom...but is it enough?
[/quote]
all you can do is give it a try.
but myself i would go for a 1000watt
but the 750w should run everything.
I use a 1200w myself with 2 580's
and they only need 600w each and
when i first built my system i had
a 950w and it would not even get past
windows splash screen without shutting
off due to not enough power so i
installed the 1200w and have been good
since Feb 2011.
[quote name='BigCee' date='20 April 2012 - 10:10 AM' timestamp='1334941838' post='1398785']

right....and beyond that I've got some headroom...but is it enough?



all you can do is give it a try.

but myself i would go for a 1000watt

but the 750w should run everything.

I use a 1200w myself with 2 580's

and they only need 600w each and

when i first built my system i had

a 950w and it would not even get past

windows splash screen without shutting

off due to not enough power so i

installed the 1200w and have been good

since Feb 2011.

Corsair C70 case, ASUS Sabertooth X58,Intel i7 970 6 core cpu, 24gigs Avant memory, PNY GTX 680 4GB, Corsair AX1200 psu with sleeved cables, Sound Blaster Z, 2 LG Blu-Ray, 2 Crucial M500 120GB SSD, 1 Seagate 500GB HDD, 1 Western Digital VelociRaptor 1TB HDD, Microsoft SideWinder X4 keyboard, Corsair M65 mouse, Xbox 360 controller, Logitech 5.1 speakers, LG 27" IPS LED monitor, 3 Noctua 120mm fans, 2 Noctua 140mm fans, 1 Noctua 92mm fan, Noctua NH-C12P SE14 140mm SSO cpu cooler. Windows 7 Pro 64 bit. GPU has a small overclock by me.

#4
Posted 04/20/2012 05:23 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. 1101 // 16GB DDR3 (4x4GB) @ 1333mhz // 500GB+250GB+120GB hard drives // GTX 460 786MB // PC Power n Cooling MKII Silencer 950W power supply // Antec 300 case // 19" westinghouse 1440x900 + lcd 19" 1280x1024 // 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/

#5
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. 1101 // 16GB DDR3 (4x4GB) @ 1333mhz // 500GB+250GB+120GB hard drives // GTX 460 786MB // PC Power n Cooling MKII Silencer 950W power supply // Antec 300 case // 19" westinghouse 1440x900 + lcd 19" 1280x1024 // 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/

#6
Posted 04/21/2012 12:32 AM   
[quote name='BigCee' date='20 April 2012 - 05:32 PM' timestamp='1334968353' post='1398936']
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?
[/quote]
nope just install it and run it.
[quote name='BigCee' date='20 April 2012 - 05:32 PM' timestamp='1334968353' post='1398936']

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?



nope just install it and run it.

Corsair C70 case, ASUS Sabertooth X58,Intel i7 970 6 core cpu, 24gigs Avant memory, PNY GTX 680 4GB, Corsair AX1200 psu with sleeved cables, Sound Blaster Z, 2 LG Blu-Ray, 2 Crucial M500 120GB SSD, 1 Seagate 500GB HDD, 1 Western Digital VelociRaptor 1TB HDD, Microsoft SideWinder X4 keyboard, Corsair M65 mouse, Xbox 360 controller, Logitech 5.1 speakers, LG 27" IPS LED monitor, 3 Noctua 120mm fans, 2 Noctua 140mm fans, 1 Noctua 92mm fan, Noctua NH-C12P SE14 140mm SSO cpu cooler. Windows 7 Pro 64 bit. GPU has a small overclock by me.

#7
Posted 04/21/2012 01:30 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

#8
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

#9
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. 1101 // 16GB DDR3 (4x4GB) @ 1333mhz // 500GB+250GB+120GB hard drives // GTX 460 786MB // PC Power n Cooling MKII Silencer 950W power supply // Antec 300 case // 19" westinghouse 1440x900 + lcd 19" 1280x1024 // 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/

#10
Posted 04/22/2012 02:17 AM   
I leave my system on 24/7 unless i will be gone for more then 24 hours or on vacation,
I have it set to turn off the monitor in 10 mins and have the hard drives stop spinning
after 20 mins, but ever since i built this sytem and put in the 1200watt psu my electric
bill shows it and i also leave it running on a very large APC XS 1500 battery backup as when
i do turn it off and then power it back up the lights in my home office will dim for a 2nd
so i also leave the office light off untill i'm powered up, my 950w didnt do this so i guess
1200w is just lots of power.
I leave my system on 24/7 unless i will be gone for more then 24 hours or on vacation,

I have it set to turn off the monitor in 10 mins and have the hard drives stop spinning

after 20 mins, but ever since i built this sytem and put in the 1200watt psu my electric

bill shows it and i also leave it running on a very large APC XS 1500 battery backup as when

i do turn it off and then power it back up the lights in my home office will dim for a 2nd

so i also leave the office light off untill i'm powered up, my 950w didnt do this so i guess

1200w is just lots of power.

Corsair C70 case, ASUS Sabertooth X58,Intel i7 970 6 core cpu, 24gigs Avant memory, PNY GTX 680 4GB, Corsair AX1200 psu with sleeved cables, Sound Blaster Z, 2 LG Blu-Ray, 2 Crucial M500 120GB SSD, 1 Seagate 500GB HDD, 1 Western Digital VelociRaptor 1TB HDD, Microsoft SideWinder X4 keyboard, Corsair M65 mouse, Xbox 360 controller, Logitech 5.1 speakers, LG 27" IPS LED monitor, 3 Noctua 120mm fans, 2 Noctua 140mm fans, 1 Noctua 92mm fan, Noctua NH-C12P SE14 140mm SSO cpu cooler. Windows 7 Pro 64 bit. GPU has a small overclock by me.

#11
Posted 04/22/2012 02:26 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

#12
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. 1101 // 16GB DDR3 (4x4GB) @ 1333mhz // 500GB+250GB+120GB hard drives // GTX 460 786MB // PC Power n Cooling MKII Silencer 950W power supply // Antec 300 case // 19" westinghouse 1440x900 + lcd 19" 1280x1024 // 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/

#13
Posted 04/22/2012 12:00 PM   
yep your both correct, but the main reason I use my backup
is years ago I had a server in my home office and my wife
used an outlet in my office for the vacuum and when she
turned it on the lights dimmed and my server died, the server
belonged to our employer (Intel Corp) and the techs tested it
and said the memory sticks were damaged due what they called
was a Brownout which is when the power is sucked from the server
because of the vacuum, so they told us a backup is a must.
that was back in 1996 when i just started learning about computers
with Intel.
yep your both correct, but the main reason I use my backup

is years ago I had a server in my home office and my wife

used an outlet in my office for the vacuum and when she

turned it on the lights dimmed and my server died, the server

belonged to our employer (Intel Corp) and the techs tested it

and said the memory sticks were damaged due what they called

was a Brownout which is when the power is sucked from the server

because of the vacuum, so they told us a backup is a must.

that was back in 1996 when i just started learning about computers

with Intel.

Corsair C70 case, ASUS Sabertooth X58,Intel i7 970 6 core cpu, 24gigs Avant memory, PNY GTX 680 4GB, Corsair AX1200 psu with sleeved cables, Sound Blaster Z, 2 LG Blu-Ray, 2 Crucial M500 120GB SSD, 1 Seagate 500GB HDD, 1 Western Digital VelociRaptor 1TB HDD, Microsoft SideWinder X4 keyboard, Corsair M65 mouse, Xbox 360 controller, Logitech 5.1 speakers, LG 27" IPS LED monitor, 3 Noctua 120mm fans, 2 Noctua 140mm fans, 1 Noctua 92mm fan, Noctua NH-C12P SE14 140mm SSO cpu cooler. Windows 7 Pro 64 bit. GPU has a small overclock by me.

#14
Posted 04/22/2012 07:50 PM   
/wallbash.gif' class='bbc_emoticon' alt=':wallbash:' /> dont know why this blank page came up
/wallbash.gif' class='bbc_emoticon' alt=':wallbash:' /> dont know why this blank page came up

Corsair C70 case, ASUS Sabertooth X58,Intel i7 970 6 core cpu, 24gigs Avant memory, PNY GTX 680 4GB, Corsair AX1200 psu with sleeved cables, Sound Blaster Z, 2 LG Blu-Ray, 2 Crucial M500 120GB SSD, 1 Seagate 500GB HDD, 1 Western Digital VelociRaptor 1TB HDD, Microsoft SideWinder X4 keyboard, Corsair M65 mouse, Xbox 360 controller, Logitech 5.1 speakers, LG 27" IPS LED monitor, 3 Noctua 120mm fans, 2 Noctua 140mm fans, 1 Noctua 92mm fan, Noctua NH-C12P SE14 140mm SSO cpu cooler. Windows 7 Pro 64 bit. GPU has a small overclock by me.

#15
Posted 04/23/2012 02:55 AM   
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