Sign in with
Sign up | Sign in
Your question

How do I know if I have enough power?

Last response: in Components
Share
May 16, 2012 10:34:49 AM

I upgraded not too long ago to an XFX Radeon HD 6790 and it wound up using 2 pci-e power connectors where my old card used one. The performance has not been where it should so I am starting to wonder if I have enough power. My PSU is an OCZ ModXStream pro 700W. I have listed my full specs below.

MSI 870A-G54 Motherboard (not the FX one)
4 GB of Corsair XMS3 DDR3 RAM 9-9-9-24
OCZ ModXStream Pro 700w PSU
AMD Athlon II 635 Propus 2.9GHz
AMD Radeon HD 6790 (dual fan)
Asus DVD rom drive
2 500GB Seagate Barracuda 7200 rpm hard drives
1 80GB Seagate Barracuda 7200 rpm hard drive
5 case fans (with blue leds except one)
Asus PCE-N10 wireless card
Zalman CNPS 7500 Cu LED cpu fan
Windows 7 Ultimate (dunno if that matters)
and I have an 360 controller, webcam, microphone, mouse and keyboard and a few usb cable for things plugged into it.

More about : power

a c 139 ) Power supply
May 16, 2012 10:42:39 AM

How do I know if I have enough power?

Stopping by here was a good idea.

That OCZ ModXStream Pro 700W should be getting plenty of power to your system.

In what way has 'performance has not been where it should'?

How has the performance changed with the graphics card swap? Any other changes made?

What card did you replace?


m
0
l
May 16, 2012 11:19:47 AM

I had a PNY Nvidia GTS 250 and it has more pop in and less fps. I kinda lags more than the old card as well. I also completely cleaned my comp recently so it is a fresh install.
m
0
l
Related resources
a c 139 ) Power supply
May 16, 2012 11:24:41 AM

sixstring88 said:
I had a PNY Nvidia GTS 250 and it has more pop in and less fps.
Pop in? What is that?
m
0
l
a c 164 ) Power supply
May 16, 2012 11:33:09 AM

WR2 said:
Pop in? What is that?


i think he means certain things pop onto the screen rather then coming into view from a distance.
m
0
l
a c 243 ) Power supply
May 16, 2012 11:50:52 AM

WR2 said:
AMD Radeon HD 6970 Graphics System Requirements
http://www.amd.com/us/products/desktop/graphics/amd-rad...

--> 550 Watt or greater power supply with one 150W 8-pin PCI Express® power connector and one 75W 6-pin PCI Express® power connector recommended

sixstring88 said:
XFX Radeon HD 6790

m
0
l
a c 139 ) Power supply
May 16, 2012 11:56:29 AM

Yikes!
6790. That's hardly an upgrade over GTS 250.

m
0
l
a c 243 ) Power supply
May 16, 2012 11:57:39 AM

WR2 said:
Yikes!
6790. That's hardly an upgrade over GTS 250.

;) 
m
0
l
May 18, 2012 5:03:13 AM

Yea still dunno why it isn't as powerful as my GTS 250 :-(
m
0
l
a c 697 ) Power supply
May 18, 2012 5:26:56 AM

The new fresh install done before or after the GPU change? If before might be driver issue.
m
0
l
May 18, 2012 6:36:11 AM

Before and after. I did it twice :-P
m
0
l
May 18, 2012 7:23:26 AM

The Asus thing said I would be using 650 is that enough power? I know mine says 700 but someone in a thread somewhere that my power supply only puts out like 550.
m
0
l
a c 139 ) Power supply
May 18, 2012 7:28:12 AM

A 500W PSU would be plenty of power for your system.
m
0
l
a c 697 ) Power supply
May 18, 2012 7:38:26 AM

WR2 said:
eXtreme Power Supply Calculator Lite is suggesting a 400W PSU is about right for your system
http://extreme.outervision.com/PSUEngine

Agree with that result!
Some calculators like ASUS and Newegg really exaggerate the power need (legal issue, probably because of so many crap PSU's on the market that do not deliver the promised output)
m
0
l
May 18, 2012 7:44:40 AM

Oh alright thanks guys :-)
m
0
l
May 18, 2012 8:27:14 AM

I ran Prime 95 cause I might overclock and was gonna just make sure everything was good before and was gonna run it again after. Well even not OC'd my comp crashed...
m
0
l
a c 139 ) Power supply
May 18, 2012 8:30:04 AM

Run Memtest86+


What kind of crash?
Had you been monitoring your temps?
m
0
l
May 18, 2012 8:42:37 AM

I just went to prime 95 and clicked test and went to see if it was actually running anything and the sound started skipping and I got these white static looking lines on the screen then the blue screen of death and a restart :-/
m
0
l
a c 139 ) Power supply
May 18, 2012 8:44:58 AM

Right - run Memtest86+
m
0
l
May 20, 2012 11:07:54 AM

Well I found out it was overclocked apparently by my mobo with the OC Genie feature. I ran Unigine Heaven on it earlier by the way and it didn't do horrible performance wise, however certain buildings or in some cases everything in some scenes would disappear every once in a while or kinda flicker. Does anyone know what that could mean?
m
0
l
a c 139 ) Power supply
May 20, 2012 11:19:23 AM

sixstring88 said:
certain buildings or in some cases everything in some scenes would disappear every once in a while or kinda flicker. Does anyone know what that could mean?
That sounds like a driver issue to me.
m
0
l
May 20, 2012 11:45:57 PM

hmm :-/ Any ideas on how to fix it?
m
0
l
!