Smallville8vdm Posted December 29, 2010 Posted December 29, 2010 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 More sharing options...
El_Capitan Posted December 29, 2010 Posted December 29, 2010 It's cutting it awefully close, but I'd have to say more "no" than "yes". Averaging about 300w for the 6970 at load, and 200w for the 1055t at load (stock). Share this post Link to post Share on other sites More sharing options...
jdm_freek Posted December 29, 2010 Posted December 29, 2010 i dont see why not i am running an HIS5870@900/1200 wtih an i7 870 @4.0ghz on a coolermaster 600w with no problems Share this post Link to post Share on other sites More sharing options...
F13Bubba Posted December 29, 2010 Posted December 29, 2010 It's cutting it awefully close, but I'd have to say more "no" than "yes". Averaging about 300w for the 6970 at load, and 200w for the 1055t at load (stock). Share this post Link to post Share on other sites More sharing options...
El_Capitan Posted December 29, 2010 Posted December 29, 2010 http://www.bit-tech.net/hardware/cpus/2009/09/08/intel-core-i5-and-i7-lynnfield-cpu-review/9 http://www.guru3d.com/article/phenom-ii-x6-1055t-1090t-review/5 i7 870 stock load - 197w - 218w i7 870 4.0GHz load - 270w http://www.xbitlabs.com/articles/cpu/display/amd-phenom-ii-x6-1055t-overclocking_9.html#sect0 http://www.guru3d.com/article/phenom-ii-x6-1055t-1090t-review/5 1055t stock load - 158.4w - 183w 1055t 4.0GHz load - 313.5w http://www.bit-tech.net/hardware/graphics/2010/12/15/ati-radeon-hd-6970-review/10 5970 load - 270w 6970 load - 306w As long as you're at stock voltages on the CPU, you should be fine. Share this post Link to post Share on other sites More sharing options...
dihartnell Posted December 29, 2010 Posted December 29, 2010 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 More sharing options...
paulktreg Posted December 29, 2010 Posted December 29, 2010 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 More sharing options...
El_Capitan Posted December 29, 2010 Posted December 29, 2010 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. Share this post Link to post Share on other sites More sharing options...
sticknstone Posted December 29, 2010 Posted December 29, 2010 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 More sharing options...
Boinker Posted December 29, 2010 Posted December 29, 2010 Here is a decent power supply calculator for you if you wish to use it. Calculator I don't care what the numbers say though. Id get at least an 850watt psu or better. The system in my sig below is rated to need at least 850. lol Share this post Link to post Share on other sites More sharing options...
paulktreg Posted December 29, 2010 Posted December 29, 2010 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 More sharing options...
mcw Posted December 29, 2010 Posted December 29, 2010 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 More sharing options...
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