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Power Consumption

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5:10 AM - 12/31/2008 by Thomas Soderstrom

Power consumption testing is new to our SBM, so this month’s overclocked $2,500 PC can only be compared to its stock settings.

While we didn’t record the former build’s power consumption, we did notice the reading because it was connected to a global power meter during tests. The overclocked $4,500 PC consumed approximately 800 W at full GPU and CPU load. It certainly would have been interesting to compare its idle power as well, but at least we can see how much of an impact overclocking our current PC has on the power grid. Our CPU is rated to consume no more than 130 W under full load, so an increase of around 170 W at full load means that our overclock more than doubled peak CPU power consumption.

Environmentalists would love to point out how this energy could be used more effectively to do nearly anything else, but the overclock isn’t causing the full amount of energy loss all the time. Since most PCs spend most of the day at or near idle, the idle power difference is probably most important.

The problem for anyone seeking excuses is that even at idle, the overclocked PC pulled 58 W more than at stock speed. It might only be enough power to light a 60 W incandescent bulb, but it’s also enough power to light four fluorescent bulbs of the same luminosity, a mid-performance notebook, or even a complete low-power PC.

Talkback
tipmen 12/31/2008 12:08 PM
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First
LG GGC-H20LK 6X Blu-Ray/HD DVD-ROM, 16X DVD±RW for $23??? you mean 223?

douglesso 12/31/2008 12:10 PM
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Thanks for the fantastic information and detailed analysis. I just ordered the same motherboard and video card last week for my new build. Glad to see that holding out for the i7 was a worthwhile wait.

tipmen 12/31/2008 12:12 PM
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Sorry couldn't read my comment but nice blbuild by the way nice to see this. Hlaf the price and more performance.

Ph0X 12/31/2008 12:45 PM
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Anonymous 12/31/2008 1:02 PM
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Total price is off. Should be something like 2,447 and not 2,247

kelfen 12/31/2008 1:04 PM
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kelfen 12/31/2008 1:17 PM
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except the cpu is fine because of oc

kelfen 12/31/2008 1:26 PM
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dieseldre2k 12/31/2008 2:12 PM
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appreciate the article but i would drop the third HD (keep the other 2 in RAID) and use the extra money to get 6 gigs of ram instead. i'd also be wary of the scaling on 3 video cards but i dont know enough about that, plus i'm sure u guys were trying to use up all $2,500.

thomasxstewart 12/31/2008 2:54 PM
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thomasxstewart 12/31/2008 3:10 PM
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jcknouse 12/31/2008 3:14 PM
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I didn't see it right off. might have missed it.

I saw where u said that you reached limits at 75F/23.9C room temps. However, what was the CPU temp after running full load with your air cooling solution?

I am curious, because I think I put too much thermal paste on my AMD Phenom 9850 install cause it runs up around 60C when i go 100% load. I hate going anything over that, so i haven't OCed it.

Would love to hear what you guys at Tom's consider "acceptable" full load max temp for the CPU, and how you base that temp level. Manufacturer specs? Personal experience? A little of both?

Thanks in advance

Sparky4688 12/31/2008 3:22 PM
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Great review.

The December $1250 system performs very close within 2-3 seconds for Audio/Video editing and Applications and in several cases performs better. For non-gamers the December $1250 is a better value.

I built a $1250 system based on the November E8500 chip and now wished I had waited for the i7 as it performs 100-150% better for Audio/Video editing and Applications....

Sparky4688 12/31/2008 3:26 PM
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jcknouse :
I didn't see it right off. might have missed it.I saw where u said that you reached limits at 75F/23.9C room temps. However, what was the CPU temp after running full load with your air cooling solution?I am curious, because I think I put too much thermal paste on my AMD Phenom 9850 install cause it runs up around 60C when i go 100% load. I hate going anything over that, so i haven't OCed it.Would love to hear what you guys at Tom's consider "acceptable" full load max temp for the CPU, and how you base that temp level. Manufacturer specs? Personal experience? A little of both?Thanks in advance




Guide for thermal paste is to to use a razor's edge at a nearly flat angle to very thinly, evenly, and smoothly cover the entire CPU heat sink. Too much paste can have an adverse effect as you noted.

MJRSnyder 12/31/2008 3:37 PM
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Drop one of the hard drives and bluray drive and get 2 4870x2s and it would have destroyed

bourgeoisdude 12/31/2008 3:55 PM
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TW2007 said: "Total price is off. Should be something like 2,447 and not 2,247"

No, it's correct. They specifically mentioned that the price of the components went down nearly 10% since they purchased the system.

Ph0X said: "There's 3SLI GTX260, 3 x 1TB, Bluray WRITER!, but it doesn't even have 6gb ram!!?"

6GB of RAM is unusable in a 32-bit operating system, and it is not a Blu-Ray writer, it's a READER with DVD/CD writing capabilities. Your comment was probably voted down for these reasons.

dieseldre2k wrote: "appreciate the article but i would drop the third HD (keep the other 2 in RAID) and use the extra money to get 6 gigs of ram instead."

Again, 6 Gigs of RAM would have been a complete waste of money in a 32-bit build. I for one am glad they are finally benching a RAID 5 in here because I have been weighing getting a RAID 5 build for some time but have been dissuaded because of the lack of testing/interest by other gamers. I don't want to pay $2500 for a system that dies withen weeks because I just happened to be in that 3% that get a hard drive that fails withen the first year. Honestly, I'll bet that RAID 0 vs. RAID 5 performance isn't a big deal and would really like to see a RAID 0 in the next build to compare this one with.

cah027 12/31/2008 4:01 PM
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Oh Crap ! I just ordered the UD5 MB and one 260/216 with the intension of gradually adding additional 260's over time. Looks like I am limited to 2way SLI.. oh well.. Maybe I will just step up to a x2 card.... I mostly wanted the i7 for encoding and light gaming so I should be ok.. Glad to see the encoding benches look so good !

gwellin 12/31/2008 4:06 PM
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thomasxstewart :
fINAL lASLTY, yOU mENTION oCTOBERS 64 BIT TEST & recent PREVIOUS LOW COST & MID TESTS WHERE 32 BIT uLTIMATE, YET THIS TEST HAS NO MENTION OF O/S AT ALL. ITS XP RIGHT, TOM FOOLERY AGAIN, COMPARING ENTIRELY DIFFERNT SYSTEMS. BEST ULTIMATE WILL SCORE IS 13,000 VANTAGE HERE, YET ULTIMATE 64 HAS PRODUCED 38,000 3D VANTAGE BY REPUTABLE WEBSITE. SO GO FIGURE, BEFORE YOU WASTE $3,000.00SignedHYSICIAN THOMAS STEWART von DRASHEK M.D.



Why do people type this crap. Do you not actually read what you type when you type it. "i tHINK tHIS iS rEALLY cOOL". WTF really. Do us a huge favor and don't type like a retard, infact just don't post anymore.

inveriti 12/31/2008 4:18 PM
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It seems like Tom's doesn't read their own reviews... In their own GPU chart, they never recommend a 3x SLi system, and not without reason. The last card only gives a third of its on-paper output. Also, why the hell get 3 TB of storage? Do you plan on pirating that many DVD's or burning that much money on them? And only 3 GB of RAM? No, sorry, you're dropping the ball on this one. NO "enthusiast" would sacrifice a solid 6 GB of good RAM in Vista for a uselss hard drive and ostentatious third video card.

Follow your own recommendations, guys. Get an ATI 4870 x2, put the money into better RAM and cooling, then use what's left to get a pair of Raptor hard drives as workhorses and a 1 or 1.5 TB hard drive for media storage if you want to use all your $2500.

Anonymous 12/31/2008 4:18 PM
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why not spend the extra $$$ on more RAM on 64 bit Vista?


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