Energy Consumption At Idle
CPU Energy Consumption At Idle
We measured the energy consumption of this processor and compared it with other models:
System-Level Energy Consumption At Idle
Compared to its 65 nm Phenom, AMD was able to reduce energy needs by between 10 and 17 watts--close to the notorious power-friendly Phenom X4 9350 from the 65 nm product family. Intel’s Core i7 still weighs in at substantially higher values than any of the AMD processors, but the Core 2 Quad Q6600 consumes 19 watts more at idle. This may make a more meaningful basis for comparison, as this CPU costs about the same as the entry-level AMD Phenom II. In the end, energy consumption comes from an entire PC system, and is not solely a function of the CPU it contains. Together, all of the components determine how much energy will be consumed, at idle and otherwise.
The 790GX consumes significantly less power than the Intel X48 and X38 chipsets, giving AMD an advantage. At idle, the system with a Phenom II consumes only 113 watts. The Intel Core i7 920 system requires 136 watts, while the Core i7 965 Extreme system takes in 145 watts. Consider also that an idle system with a Core 2 Quad 6600 requires 3 more watts than a Phenom II system.
Components Used For Energy Consumption Measurement:
| System | Phenom II | Core 2 | Core i7 |
|---|---|---|---|
| Chipset | AMD 790GX | X48 | X58 |
| RAM | DDR2-1066 | DDR3-1333 | DDR3-1333 |
| Graphics Card | Nvidia GeForce GTX 280 | Nvidia GeForce GTX280 | Nvidia GeForce GTX280 |
| Hard Disk | 2 x WD 3200AAKS | 2x WD 3200AAKS | 2x WD 3200AAKS |
| BD-ROM | Pioneer BDC-202BK | Pioneer BDC-202BK | Pioneer BDC-202BK |
| Sound Card | Creative X-Fi Xtreme Gamer | Creative X-Fi Xtreme Gamer | Creative X-Fi Xtreme Gamer |
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YAY!, The day has come! Haven't read it yet. I am excited to see what it brings!
why focus on the q6600... wouldn't the q9550 or 9650 be a more accurate comparison given their respective locations in the product lineup?
Yeah, the price comparison table should of included a Q9550, which costs same as i7 920 but with the lower mobo/ram combo price.
Ends up being the same price as the AMD bundle, but with a good more performance... there goes the whole "AMD price/performance" aspect of this chip.
Great review. Maybe some overclocking later? There were some pretty high claims about its overclocking potential. I'll wait for AM3 before I retire my E6750.
Coming up soon one-shot--I was working on that one =)
who cares about performance/watt? PRICE/PERFORMANCE is the big deal
The Q9xxx series would trump the PhenomII in all the categories listed above. THG, it was downright *criminal* to have not included the Yorkfield chips in your performance per dollar and performance per watt analysis.
hey bert/tom's:
good write up: thought id comment on i7 watts:
"we measured the power consumption directly from the 12 volt rail that supplied the CPU", i read somewhere the only i7 core logic gets power from 12v rail, the uncore/cache part somewhere else. if this is true, you going to do another measurements?
I'm so happy to see Intel has some competetion. While these new processors are not mind blowing, they offer some decent performance at the price given. I am sure this will lower the price of the q9400 and q9550, which is exactly what I want to see. Maybe even the i7s price will lower and maybe we will be back in the good days..where intel and amd flipped sides of the powerhouse like every 6 months..!! Good Write Up..
On the forums someone mentioned "why did they use DDR2-800 RAM when DDR2-1066 would give better performance for the Phenom II".Wouldn't this skew the benchmarks by a little bit (perhaps 2 to 3%)?
I'm glad AMD has provided some competition to Intel. Lack of thereof would result in Intel price gouging customers just like Nvidia did last year.
oh god!! tell me about it!!! the 8880 Ultra was like 800 even 1000 bucks online!! What the hell!! that was ridiculous!! The 4870x2 is the fastest card on the planet(currently released) and you kind find it for less than 500..! 2007 was a bad year indeed
i think this confirms this is what my next upgrade will be. can't wait for the AM3 platform. =)
Time to ditch the ole x2 6000+ Phenom 2 here i come!
http://www.newegg.com/Product/Prod [...] 6819103471
newegg is listing $US 275.
Based on on the performance numbers here and the overclocking benches from firing squad this release looks to be very promising for AMD.
Can't wait to see how well the AM3 platform performs especially if you can use an integrated 48xx chip in xFire mode.
the conclusion is a bit rushed.
how come it became a recommended buy, who will but it?
i see it a recommended buy for those who have am2 boards wanting core2quad like performance especially those like me which have an athlon x2 processor now.
anyways, if i will build a box soon based on amd,
i have to say wait for am3 boards.
nice addition of nero recode8 but it favors intel procs. now i know why my single core intel celeron m laptop works well in recode 8.
mmm, was it wrong to expect a bit more?
Even thought the intel costs more, the performance is also better... all in all, I would think only AMD folks are slipping of there chairs but not many Intel fans will change brands.
Me, im sticking to wanting to get a X58 board when the hype is gone and the prices drop...
Nice effort AMD, keep it up so we get even stronger competition!
WOW, AMD finally has a cpu that can compete with my Q6700 box, too bad that processor is almost two years old now. Pat on the back to the guys in green.
well i wonder how long my x2 6000+ is gonna last now...now imma be tempted to just stick a new Phenom II into my rig...but i think Ill wait till prices drop a lil...