Overclock.net › Forums › Components › Power Supplies › 750w or 850w for my setup
New Posts  All Forums:Forum Nav:

750w or 850w for my setup - Page 3

post #21 of 40
Quote:
Originally Posted by Riou View Post


These numbers are at the wall with a Kill-a-Watt meter. Load numbers are with Furmark 1.8.2. Assuming they used a 90 percent efficient power supply, that is only 536 watts. If that was an 80 percent efficient power supply, that is only 477 watts.

750W is enough for 580 SLI or 6970 CF. Just don't use that GPU-z power consumption override for the 580 though.
There's no way that's accurate and definitely not from the wall.

Honestly, that chart doesn't make sense in any way.
2013
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-6300 ASRock 970 Extreme3 MSI GTX 470 8GB G.SKILL Sniper 1600 1.25v 
Hard DriveOptical DriveCoolingOS
Kingston HyperX 3K 120GB LG GH22NS50 CM Hyper 212 Evo W7 Ultimate x64 
MonitorKeyboardPowerCase
Asus VE228H i-rocks KR-6820E-BK  Antec Neo ECO 520C  HAF 912 
Mouse
G9x  
  hide details  
Reply
2013
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-6300 ASRock 970 Extreme3 MSI GTX 470 8GB G.SKILL Sniper 1600 1.25v 
Hard DriveOptical DriveCoolingOS
Kingston HyperX 3K 120GB LG GH22NS50 CM Hyper 212 Evo W7 Ultimate x64 
MonitorKeyboardPowerCase
Asus VE228H i-rocks KR-6820E-BK  Antec Neo ECO 520C  HAF 912 
Mouse
G9x  
  hide details  
Reply
post #22 of 40
Quote:
Originally Posted by Confessed View Post
There's no way that's accurate and definitely not from the wall.

Honestly, that chart doesn't make sense in any way.
Actually that is pretty much right on. How is it not from the wall?
You tell me how else you are going to measure power consumption.

Just so you know, they are measuring the power consumption of the whole system, not just the cards. DUR DA DUR
post #23 of 40
Quote:
Originally Posted by thrasherht View Post
Actually that is pretty much right on. How is it not from the wall?
You tell me how else you are going to measure power consumption.

Just so you know, they are measuring the power consumption of the whole system, not just the cards. DUR DA DUR
You measure power from thew wall and you get reasonable numbers, those aren't reasonable.

Under Furmark with my rig @ 3.4GHz and stock 5850 I pull 390w from the wall. That's about 315w DC. That's just an example for the 5850 on the chart example.

As for the 580 SLI example...really??? Two cards pull over 480w DC alone.

There's a reason nobody here recommends a 650w unit for 480/580 SLI.

THAT. CHART. SUCKS.

And for it to say 6970 Crossfire uses as much as 580 SLI....WHAT!?!?
Edited by Confessed - 12/29/10 at 2:56pm
2013
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-6300 ASRock 970 Extreme3 MSI GTX 470 8GB G.SKILL Sniper 1600 1.25v 
Hard DriveOptical DriveCoolingOS
Kingston HyperX 3K 120GB LG GH22NS50 CM Hyper 212 Evo W7 Ultimate x64 
MonitorKeyboardPowerCase
Asus VE228H i-rocks KR-6820E-BK  Antec Neo ECO 520C  HAF 912 
Mouse
G9x  
  hide details  
Reply
2013
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-6300 ASRock 970 Extreme3 MSI GTX 470 8GB G.SKILL Sniper 1600 1.25v 
Hard DriveOptical DriveCoolingOS
Kingston HyperX 3K 120GB LG GH22NS50 CM Hyper 212 Evo W7 Ultimate x64 
MonitorKeyboardPowerCase
Asus VE228H i-rocks KR-6820E-BK  Antec Neo ECO 520C  HAF 912 
Mouse
G9x  
  hide details  
Reply
post #24 of 40
I have mixed feelings about the chart. But almost 400W from the wall with just a Phenom II X4 and a 5850 sounds like a lot more than it should be.
post #25 of 40
Quote:
Originally Posted by Confessed View Post
There's no way that's accurate and definitely not from the wall.

Honestly, that chart doesn't make sense in any way.
That review site said they used a Kill-A-Watt meter so it has to be from the wall. It is possible their Kill-A-Watt meter was inaccurate or the drivers reduced the power consumption like on the GTX 580. Perhaps they already calculated for AC/DC conversion and I am incorrect.

Here is Anandtech's:



The majority of review sites use readings from the wall. The 580 SLI likely has the GPU-z power unlocker enabled. Remember 580 has that driver profile for Furmark. These are stock values so overclocking will increase power consumption.
post #26 of 40
Quote:
Originally Posted by Shub View Post
I have mixed feelings about the chart. But almost 400W from the wall with just a Phenom II X4 and a 5850 sounds like a lot more than it should be.
9 fans, 2 cathodes. That might add a little more than usual.

I'll hook my rig up to the kill-a-watt right now and test with GPU clocks and higher CPU clock.
2013
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-6300 ASRock 970 Extreme3 MSI GTX 470 8GB G.SKILL Sniper 1600 1.25v 
Hard DriveOptical DriveCoolingOS
Kingston HyperX 3K 120GB LG GH22NS50 CM Hyper 212 Evo W7 Ultimate x64 
MonitorKeyboardPowerCase
Asus VE228H i-rocks KR-6820E-BK  Antec Neo ECO 520C  HAF 912 
Mouse
G9x  
  hide details  
Reply
2013
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-6300 ASRock 970 Extreme3 MSI GTX 470 8GB G.SKILL Sniper 1600 1.25v 
Hard DriveOptical DriveCoolingOS
Kingston HyperX 3K 120GB LG GH22NS50 CM Hyper 212 Evo W7 Ultimate x64 
MonitorKeyboardPowerCase
Asus VE228H i-rocks KR-6820E-BK  Antec Neo ECO 520C  HAF 912 
Mouse
G9x  
  hide details  
Reply
post #27 of 40
Quote:
Originally Posted by Riou View Post
That review site said they used a Kill-A-Watt meter so it has to be from the wall. It is possible their Kill-A-Watt meter was inaccurate or the drivers reduced the power consumption like on the GTX 580. Perhaps they already calculated for AC/DC conversion and I am incorrect.

Here is Anandtech's:



The majority of review sites use readings from the wall. The 580 SLI likely has the GPU-z power unlocker enabled. Remember 580 has that driver profile for Furmark. These are stock values so overclocking will increase power consumption.
480s take up 851w?

Right...

My hx750 handled
2 x 4ghz i7
2 x 480
1 x 470

Some how I doubt this...
post #28 of 40
Quote:
Originally Posted by hoth17 View Post
480s take up 851w?

Right...

My hx750 handled
2 x 4ghz i7
2 x 480
1 x 470

Some how I doubt this...
The 851W figure is obtained at the wall and includes the entire system.
post #29 of 40
Quote:
Originally Posted by hoth17 View Post
480s take up 851w?

Right...

My hx750 handled
2 x 4ghz i7
2 x 480
1 x 470

Some how I doubt this...
If you put that much load on the HX750 I don't see how it wouldn't shut off. It can handle a bit more than it's rated for, but you must have been pushing 1000w.

As for my rig, kill-a-watt shows 420-430w under Furmark right now.
2013
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-6300 ASRock 970 Extreme3 MSI GTX 470 8GB G.SKILL Sniper 1600 1.25v 
Hard DriveOptical DriveCoolingOS
Kingston HyperX 3K 120GB LG GH22NS50 CM Hyper 212 Evo W7 Ultimate x64 
MonitorKeyboardPowerCase
Asus VE228H i-rocks KR-6820E-BK  Antec Neo ECO 520C  HAF 912 
Mouse
G9x  
  hide details  
Reply
2013
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-6300 ASRock 970 Extreme3 MSI GTX 470 8GB G.SKILL Sniper 1600 1.25v 
Hard DriveOptical DriveCoolingOS
Kingston HyperX 3K 120GB LG GH22NS50 CM Hyper 212 Evo W7 Ultimate x64 
MonitorKeyboardPowerCase
Asus VE228H i-rocks KR-6820E-BK  Antec Neo ECO 520C  HAF 912 
Mouse
G9x  
  hide details  
Reply
post #30 of 40
Fortunately for me I got a killer price on my AX850 so I went with it but the HX750 should be more than enough for that setup i'd recommend the AX750 due to its superior component quality but it probably not worth the extra 25bucks.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Power Supplies
Overclock.net › Forums › Components › Power Supplies › 750w or 850w for my setup