Core i5 vs i7 920 vs Core 2 Quad vs AMD PII完整测试强势曝光了

skyfx

Lynnfield Pricing and SpecsFrom Intel’s first disclosure of Nehalem we knew that the architecture, albeit optimized for quad-core processors, would scale up to 8 cores and down to 2:

Lynnfield, however, does not scale Nehalem’s core count in any direction. The eight-core derivative is Nehalem-EX and the two-core versions will appear later this year in 32nm mobile form. Lynnfield is a direct replacement for the quad-core Penryn CPUs that have dominated the market for the past year and a half.

Name	Manufacturing Process	Cores	Target Market	Release
Gulftown	32nm	6	High End Desktop	1H 2010
Core i7 (Bloomfield)	45nm	4	High End Desktop	Q4 2008
Lynnfield	45nm	4	Performance Desktop	Q3 2009
Clarksfield	45nm	4	High End Mobile	Q3 2009
Clarkdale	32nm	2	Mainstream Desktop	Q4 2009
Arrandale	32nm	2	Mobile	Q4 2009

A few places have published rumored Intel roadmaps for Lynnfield, indicating that three Lynnfield chips will be launched in the second half of this year:

Model Number	Clock Speed	Cores / Threads	Maximum Single Core Turbo Frequency	TDP	Price
?	2.93GHz	4 / 8	3.60GHz	95W	$562
?	2.80GHz	4 / 8	3.46GHz	95W	$284
?	2.66GHz	4 / 4	3.20GHz	95W	$196

All of the processors are quad-core Nehalems with the same cache sizes as the Core i7. The only crippled beast is the entry level Lynnfield that has Hyper Threading disabled. Note the ridiculously high turbo frequencies which are, I believe, Lynnfield’s secret weapon.

Processor	Price
Intel Core i7-940 (2.93GHz)	$562
Intel Lynnfield 2.93GHz	$562
Intel Core i7-920 (2.66GHz)	$284
Intel Lynnfield 2.80GHz	$284
Intel Lynnfield 2.66GHz	$196
Intel Core 2 Quad Q9650 (3.00GHz)	$316
Intel Core 2 Quad Q9550 (2.83GHz)	$266
Intel Core 2 Quad Q9400 (2.66GHz)	$213
Intel Core 2 Quad Q8400 (2.66GHz)	$183
Intel Core 2 Quad Q8200 (2.33GHz)	$163

With a 2.66GHz Lynnfield and a $100 P55 motherboard you now have the ability to deliver a good quad-core system at around $150 - $200 cheaper than the cheapest Core i7. Price-wise the 2.66GHz Lynnfield would be priced cheaper than today's Core 2 Quad Q9400, and as you'll see Lynnfield is clearly a faster bet.
The 2.80GHz Lynnfield should also be able to outperform the i7-920 without a problem, at a lower total system cost
as well.

The LGA-1156 Socket and New HeatsinksThe LGA-1156 socket, as its abbreviated name implies, is designed to interface with Land Grid Array packaged CPUs. The pins are located in the socket itself. To install you set the CPU in the socket, lower a clamp and then fasten the clamp in place with a lever.

The LGA-1156 Socket

I wish I could provide a more detailed motherboard pic but a quick Google search should yield good results. The entire plate that holds the CPU in place actually lifts up and to the right in the picture above. The notch at the left of the plate slides under the screw you see on the left side and the lever at the bottom secures it in place. It works pretty well in person.
The new socket requires a new cooler. The four mounting holes are closer together on the LGA-1156 socket than they are on LGA-1366 boards, but further apart than LGA-775. It’s just different enough to require a brand new cooler, or at least a new mounting bracket.

Thermaltake's SpinQ: Our first LGA-1156 cooler

Thermaltake sent over its SpinQ which will ship with an adjustable LGA-1366 bracket that can be used on both LGA-1156 and LGA-1366 motherboards. Each peg can slide back and forth to get the right positioning before locking it down, allowing the cooler to work on both platforms.

Oooh, adjustable mounting pegs

The cooler performed just fine in our tests and looks painful so try not to sit on it.

The First Lynnfield SampleLet me preface this with the usual disclaimer. Intel did *not* supply me with this chip and it is most definitely pre-production silicon, not necessarily indicative of final, shipping performance.
With that out of the way, here is Lynnfield:

Lynnfield (front) vs. Bloomfield (back)

Core i7-Bloomfield (left) vs. Lynnfield (right)

It’s a lot smaller than the LGA-1366 Core i7, but compared to current Core 2 Quads it’s actually similar in size:

LGA-775 Core 2 Duo (left) vs. LGA-1156 Lynnfield (right)

Flipping the chips over you see that Lynnfield has a much higher pad density, enabling Intel to fit 1156 pads in about the same space as it fit 775 pads just a few years prior.

Core 2 (left) vs. Lynnfield (right)

Once more, I’ve blanked out all of the caps and other markings on the chip to protect the innocent.
The initial Lynnfield samples were all clocked at 2.13GHz with HT enabled. Turbo mode was also enabled but it too was a meager 2.26GHz regardless of how many cores were active. All of this was to enable motherboard manufacturers to test compatibility and performance of their P55 without giving away Lynnfield’s true performance.
Unfortunately this is the sample I tested with. Thankfully it was healthy enough for me to overclock the BLCK to 166MHz, resulting in a 2.66GHz frequency. Turbo mode was still stuck at a 1x increase over the stock frequency, so final Lynnfield performance should be much better in single and dual threaded apps than what you’ll see here today.
The results on the coming pages show three configurations. Lynnfield running at 2.13GHz with HT enabled, 2.66GHz with HT enabled and 2.66GHz with HT disabled. The latter is going to be the closest to actual Lynnfield performance (albeit still far away thanks the sample’s crippled turbo mode), the 2.66GHz with HT enabled just shows how much we gain from HT and the 2.13GHz chip is an experiment in seeing how low Intel could drop these things and still have a competitive part.
If you thought Nehalem needed Hyper Threading to be a strong performer, you were dead wrong.
Comments About Lynnfield's ReadinessThe current rumors in the press are that Lynnfield is being held back in order to clear out excess Core 2 Quad inventory before it ships, because once this thing ships no one is going to want a Penryn anymore. Based on what I've seen, Lynnfield isn't ready just yet - it's not an artificial delay.

sentand

散热器是亮点……

itany

Lynnfield的缓存有改动么？L123分别多大？
Diger 发表于 2009-6-11 09:48

木有改动，都是一样的

sky1976

散热器怎么这么像传说中的血滴子？

sinoyster

拜amd所赐，intel的 ix终于降价了

shuhq

两者皆可抛

larrywest

基本上还是I7领先啊，就看主板差价多少了

ai363058240

没什么好比的 价格差了一大截

caogang

看到大家都说顶到正式，虽然不知道什么意思，但是为了显示自己有文化，顺便跟国际接规，我也顶一下

superray

查了一下，i5只支持双筒，QPI换成了DMI
好像没了

superray

I5到底阉了啥？

爱离心

那个TT的洗衣机真不错。。。

野生菠菜

AMD要努力了啊，没竞争的社会真可怕

deepabyss

楼上好搞笑

排骨饭

那个TT滚筒是Lynnfield原配散热器吗？

tenzerotwo

好YY的散热器

itany

看P55价格能不能比X58便宜……不然2.8G的I5和I7 920一样价格，2.6的又阉割了一些功能
Yao_water 发表于 2009-6-2 20:46

为什么？
就凭这个飞机场，能买的上价格么？

GZeasy.cn

明年32NM不知道会如何

Yao_water

看P55价格能不能比X58便宜……不然2.8G的I5和I7 920一样价格，2.6的又阉割了一些功能