Jump to content

will my power supply pull this


Recommended Posts

Halo everyone.

 

I am looking to buy a sapphire hd 6970 but dont know if my power will have enough power.

 

ok my specs

 

CPU: phenom x6 1055t @ stock

mobo: Asus crosshair 4 formula

RAm : 2x2 TEam xtreme 1600mhz

3 hard drives

1 optical drive

5 fans

 

and my power supply is a vantec ion2+ 600wat 80+effiency

 

Thanks for the replies to come

Share this post


Link to post
Share on other sites

  • Replies 24
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Share this post


Link to post
Share on other sites

I think it would be pretty close to its max. Using the Antec PSU calculator your system came out at 593watts. I used 10% capacitor aging as well. If your PSU is new then you have a little headroom.

 

Personally I don't think its a good Idea to run your system near the max of the PSU all of the time, so perhaps better to look at 650watts.

Share this post


Link to post
Share on other sites

The figure for power consumption for the HD6970 of 306W (from the wall, about 260W from the PSU) is for a fairly powerful i7-965 system running a popular graphics benchmark as a fairly typical representation of real world gaming. It's arguable whether the 3DMark06 canyon flight test is typical but even so let's allow another 150W from the power supply and it's still only 410W and that as to be about as much that is ever going to be needed with the CPU at stock. I think 600W is more than enough but I can't find much information on the performance of the Vantec ion2 power supply and with a total of only 32A (432W) available on it's two 12V rails it's a little too low for my liking when other high end power supplies offer 40A + and it could be an indication of mediocre performance. There's very little reliable test/review information out there for the Vantec ion2, 600W is more than enough but it's hard to call.

Share this post


Link to post
Share on other sites

The figure for power consumption for the HD6970 of 306W (from the wall, about 260W from the PSU) is for a fairly powerful i7-965 system running a popular graphics benchmark as a fairly typical representation of real world gaming. It's arguable whether the 3DMark06 canyon flight test is typical but even so let's allow another 150W from the power supply and it's still only 410W and that as to be about as much that is ever going to be needed with the CPU at stock. I think 600W is more than enough but I can't find much information on the performance of the Vantec ion2 power supply and with a total of only 32A (432W) available on it's two 12V rails it's a little too low for my liking when other high end power supplies offer 40A + and it could be an indication of mediocre performance. There's very little reliable test/review information out there for the Vantec ion2, 600W is more than enough but it's hard to call.

+1 Whatever he says. :P

Share this post


Link to post
Share on other sites

From memory I read that a psu is chosen by taking 80% of the computers full load. The reason being is the psu will have a peak amount which will provide the power it requires. Full load is not something which is 24/7 occurance. Therefore, I would be cautious of benchmark software which is attempting to max out a computer for an extended period of time. If the psu is sized for 80% load at least.

Share this post


Link to post
Share on other sites

From memory I read that a psu is chosen by taking 80% of the computers full load. The reason being is the psu will have a peak amount which will provide the power it requires. Full load is not something which is 24/7 occurance. Therefore, I would be cautious of benchmark software which is attempting to max out a computer for an extended period of time. If the psu is sized for 80% load at least.

 

GPU benchmarking software is used to simulate a typical gaming load and not fully load the power supply. ;)

 

When you say 80% I take it you mean your computers full load is 400W so fit a 500W power supply? There aren't really any rules for power supply choice, obviously you need enough but I think 80% is cutting it a bit close especially when you consider power supply quality. Most enthusiasts appreciate the benefits of fitting a high end power supply but I've seen numerous forum signatures with power supplies of questionable quality. These power supplies may not deliver their full rated power and 80% could very well be beyond their capability or close to their "realistic" maximum meaning full load.

 

My advice would be to fit a power supply at least twice as big as needed if you can for maximum efficiency, you'll also get the added benefit of lower power supply working temperatures and low fan noise.

Share this post


Link to post
Share on other sites

The Power Factor (not the 80+ rating - that's all pretty much garbage when you see how they do the rating) is probably your best bet in determining the efficiency... In my work system, I dropped the power supply down from a 750 to 550 just because it was determined to be oversized (QX6800 + HD3850 + 5 Hard drives + burner + bunch of accessories, fans, USB devices, lighting). Compared to newer components, these actually draw more power off the wall, and the 550 still works without a problem

 

I am looking at 3x servers in front of me - all running 2x E5630 + 18GB RAM @ average load - all off a single 1000W power supply (there's actually more that I'm not including - hard drives, a 24 port gig enterprise switch that's powered by the same power supply). Your power supply might work out just fine - I've noticed that about 90% of the people tend to get power supplies much larger than they actually need.

 

If you already have the components, the best thing to do - test it...

Share this post


Link to post
Share on other sites

Please sign in to comment

You will be able to leave a comment after signing in



Sign In Now

×
×
  • Create New...