The Intel Ivy Bridge (Core i7 3770K) Review
by Anand Lal Shimpi & Ryan Smith on April 23, 2012 12:03 PM EST- Posted in
- CPUs
- Intel
- Ivy Bridge
Power Consumption
Intel isn't really exploiting 22nm for significantly higher default or max turbo frequencies. While it does seem like you'll hit turbo frequencies more often with Ivy, most of what 22nm offers will be realized as power savings.
The data in the charts below is from our original 3770K preview, however I've also provided a table comparing the 3770K to the 2700K using Intel's own Z77 motherboard which is a bit more power hungry than our typical testbed:
| Power Consumption Comparison | ||||
| Intel DZ77GA-70K | Idle | Load (x264 2nd pass) | ||
| Intel Core i7 3770K | 80.1W | 146.4W | ||
| Intel Core i7 2700K | 79.4W | 177.6W | ||
As you can see, there are no savings at idle and a reasonably significant improvement under load.
The same is echoed on our earlier chip in a more power efficient platform:
I was also curious to see what power consumption would look like compared to other low-end GPUs. For these next results I used the 3770K alone, without a discrete card and measured power consumption. I then added in discrete GPUs from our HD 4000 comparisons and looked at both idle and load power while playing Metro 2033:
Obviously at idle it's impossible to beat the HD 4000, the GPU is largely stopped/gated when idle keeping power consumption to a minimum. Under load is where things get interesting:
Ivy's GPU is much more power efficient than SNB's, however Intel still has a way to go before it starts to equal the power efficiency of modern discrete GPU architectures. Remember the HD 4000 is on Intel's 22nm process here while the GT 440 is built on TSMC's 40nm process.
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sld - Wednesday, April 25, 2012 - link
.... and in this multivariate comparison you choose to ignore the superior battery life which makes Llano a serious competitor in the mobile space.midn8t - Thursday, June 28, 2012 - link
this the frames pre secound for CPU, you cant really figure out well when gamming its all mostly based around what ever video card they used, in this artical so I would have to guess that they might have used diffrent GPU video card in each system.obivuously they cant use same motherboard for amd vs intel
Also I find it wired that other reciews have Rated the phenom II x6 lower in preformance then the FX chip makes it wired how these review claims that the phenom II which is lower grade CPU is more powerfull then the top of the line AMD product out.
zeagus - Wednesday, April 25, 2012 - link
A huge chunk of text is spent explaining how while its a step in the right direction, they need to do more on the GPU side of the equation. Take off your strangely coloured glasses.wingless - Monday, April 23, 2012 - link
EDIT: I'M NOT KIDDING. I bought my 2600K the Friday before last for $199 and paired it with an ASUS P8Z77-V PRO. Ivy Bridge is simply too hot and lacks OC performance.I overclock so I WILL be keeping my 2600K for the foreseeable future!
fredisdead - Sunday, April 29, 2012 - link
So HD4000 igp is weaker than last gen Brazos ?? Based on the leaked Trinity benchmarks, Trinity blows any Intel igp into the weeds, never mind the ( already 1.5 yr old ) Brazos, which is 'only' 5% faster.fredisdead - Sunday, April 29, 2012 - link
So HD4000 igp is weaker than last gen Brazos ?? Based on the leaked Trinity benchmarks, Trinity blows any Intel igp into the weeds, never mind the ( already 1.5 yr old ) Brazos, which is 'only' 5% faster.1ceTr0n - Monday, April 23, 2012 - link
I'll keep my 2500k @ 4.6ghzNot kidding
smookyolo - Monday, April 23, 2012 - link
And I'll keep mine at 4.9GHz.But that's just because I'll be waiting for the tock, not the tick.
I will however be getting a Ivy Bridge Laptop soon.
Flunk - Monday, April 23, 2012 - link
Me too, the 2500K is a great chip. Especially with watercooling.Ratman6161 - Monday, April 23, 2012 - link
For anyone like me who already has a Sandy Bridge quad core (mine's a 2600K) it wouldn't make a lot of sense to "upgrade" to an Ivy bridge. But for those with older systems looking to upgrade, these actually seem like pretty good deals. @ $313 the 3770K is cheaper than the 2700K and cheaper than the typical price on a 2600K (unless like me you are lucky enough to live near a Micro Center).As to those complaining about graphics, come on. Will anyone who really cares a lot about graphics, particularly gaming, be using the on board graphics anyway?