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Old 14-Aug-2009, 21:06   #1
Davros
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Default Core i5 and Core i7 Socket LGA-1156 Lynnfield based processors now on sale

linky
http://www.tweaktown.com/news/12989/...wan/index.html
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Last edited by Davros; 16-Aug-2009 at 04:28.
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Old 16-Aug-2009, 04:29   #2
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ps: fry's website the CPU is selling for $205 and is listed as "in stock", with same-day shipping available. A quick search for faster Lynnfield CPUs and P55 motherboards however turns up no results.
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Old 18-Aug-2009, 00:28   #3
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It would be nice if we could see i5 750 and some nice MB combo for about 250ish euros in Europe. And 300ish with i7 860.
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Old 18-Aug-2009, 06:26   #4
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Shouldn't this be in the Processor & Chipset Technology subforum?

Anyway, local stores have been 'selling' them for about a week.
None actually have it in stock yet though & none are even advertising any mobos
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Old 18-Aug-2009, 11:56   #5
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Quote:
Originally Posted by hoom View Post
Shouldn't this be in the Processor & Chipset Technology subforum?
Agreed - and has been moved.
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Old 18-Aug-2009, 16:15   #6
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i5 750 review:
http://en.inpai.com.cn/doc/enshowcon...04&pageid=5443
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Old 18-Aug-2009, 16:44   #7
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Wow... AMD are in trouble if those benchmarks hold true elsewhere. Its basically a sub $200 CPU with reasonable platform costs that performs as well as an i7 920 in games but draws WAY less power!

I wonder if they had turbo boost turned off in those tests as well since I would have expected the i5 to perform better in some cases with it on.
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Old 18-Aug-2009, 17:23   #8
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the lowest i5 lacks VT-D as a gamer is it of any use to me ?

ps: what is a IMST 9.0 interface ?

pps: does anyone know how i7/i5 @2.66 compare to a core2 quad @2.66 ?
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Old 18-Aug-2009, 17:56   #9
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Quote:
Originally Posted by Davros View Post
the lowest i5 lacks VT-D as a gamer is it of any use to me ?

ps: what is a IMST 9.0 interface ?

pps: does anyone know how i7/i5 @2.66 compare to a core2 quad @2.66 ?
I'm almost certain the answer to your first question is no. I think it has something to do with virtualisation.

No idea on the second one.

To answer your third question, in CPU limited situations, both i5 and i7 would slaughter an identically clocked C2Q. In fact, they can both easily beat a 3Ghz C2Q in CPU limited or highly threaded games. In none gaming situations they will be faster in every situation but by how much will vary. In some it will be a little, in others the difference will be massive.
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Old 18-Aug-2009, 18:01   #10
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IMST = Intel Matrix Storage Technology?
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Old 18-Aug-2009, 18:58   #11
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so its a raid controller ?
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Old 18-Aug-2009, 21:35   #12
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just checked out some benchmarks and in games the difference seems to be on average 10%
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Old 19-Aug-2009, 03:46   #13
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If the pricing holds similar to what is currently being advertised & the mobos come in at the expected relatively low prices, I think I'm probably going to get a Core i7 860 (2.8Ghz)

What happens with the Turbo Boost when you've overclocked? Does it boost higher or does it pretty much disable that feature?
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Old 19-Aug-2009, 08:32   #14
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Quote:
Originally Posted by hoom View Post
If the pricing holds similar to what is currently being advertised & the mobos come in at the expected relatively low prices, I think I'm probably going to get a Core i7 860 (2.8Ghz)

What happens with the Turbo Boost when you've overclocked? Does it boost higher or does it pretty much disable that feature?
On LGA1366 it depends on the board.
With non-Extreme chips most will give you the option of leaving it off or on and increasing the QPI speed, so you'll still get the 2x multiplier increase for single core loads, and 1x for 2-4 core loads (assuming you are within TDP).
On Extreme chips you can also tweak the multiplier - the ASUS boards tweak the max non-Turbo multiplier and doing so disables Turbo mode. On the Intel DX58SO you tweak the turbo multipliers and TDP limit, so you can set a max TDP and maximum multipliers for 1, 2, 3 and 4 core loading.

Unfortunately I've not played with overclocking any LGA1156 parts yet, but should have third-party boards soonish.
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Old 19-Aug-2009, 13:15   #15
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so its a raid controller ?
Well, I suppose it is. Nothing else comes to mind though.
IMST is basically a special RAID mode.

http://anandtech.com/weblog/showpost.aspx?i=614
Quote:
Our least favorite area of the board contains the six SATA 3Gb/s ports provided by the P55 chipset that feature RAID 0, 1, 5, and 10 support along with Intel’s new version 9 Matrix Storage technology.

Last edited by green.pixel; 19-Aug-2009 at 17:09.
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Old 20-Aug-2009, 19:08   #16
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Quote:
Originally Posted by hoom View Post
If the pricing holds similar to what is currently being advertised & the mobos come in at the expected relatively low prices, I think I'm probably going to get a Core i7 860 (2.8Ghz)
Why would you get that rather than the i7 920?
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Old 20-Aug-2009, 19:57   #17
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Maybe 'cause it has almost the same perfomance @ stock, overclocks to nearly identical levels, motherbords are cheaper and the whole platform producess less heat aka it has better perf/watt ratio?
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Old 20-Aug-2009, 21:04   #18
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I would expect the 860 to be quite a bit faster than the 920 actually. Its certainly priced higher and the only major difference other than clock speeds between them is a triple vs a dual channel memory interface. The 860 has about 200Mhz stock advantage though and with overdrive that increases to something like 600Mhz I think.
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Old 20-Aug-2009, 21:18   #19
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So the reasoning then is the triple channel memory interface won't produce results to counter the increased clock?

Does anybody really take power consumption into consideration? Seriously?
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Old 20-Aug-2009, 22:22   #20
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maybe they take heat into consideration which is sorta related
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Old 20-Aug-2009, 23:53   #21
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Quote:
Why would you get that rather than the i7 920?
What the other guys said.
The i5 750 looks to be about the same performance as an i7 920.
The 860 has a stock clock advantage + higher Turbo Boost so should be notably faster than i7 920 for not much more $ in the cost of CPU.

Meanwhile, the cheapest LGA 1366 mobo available locally is nearly the same price as is being advertised for an i5 750 CPU itself, not so long ago they were the same price as an i7 920.
LGA 1156 mobos are supposed to be coming at much lower prices.

BTW, does anyone know what the 'uncore' clocks are for the new chips?
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Old 21-Aug-2009, 02:13   #22
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Has anybody seen an i5 review that actually took advantage of the triple channel memory controller on the i7?

The one review I read from the chinese website used only dual channel memory on the i7.

Since the triple vs dual memory controllers is one of the key, if not the key difference between the two, I found that choice to be rather odd.
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Old 21-Aug-2009, 13:34   #23
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Quote:
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BTW, does anyone know what the 'uncore' clocks are for the new chips?
2.4Ghz (http://www.pcgameshardware.com/aid,6...overy/Reviews/).
In contrast to Bloomfield with triple-channel memory where this would be only good for 1.2Ghz DDR3, it is said that for dual-channel Lynnfield this is enough for DDR3-1600.
Oh and they say the multiplier for those 2.4Ghz can't be changed, so for overclocking uncore clock you have to increase reference clock.
Not sure about Clarkdale though - this one could well run IMC and L3 cache at different clocks, since L3 is on cpu die and IMC on daughter die...

Edit: maybe those 2.4Ghz are not true. This one, http://en.expreview.com/2009/08/19/t...-i5-750.html/7 claims multi 16 instead of 18 for uncore, hence 2.14Ghz instead of 2.4Ghz...

Last edited by mczak; 21-Aug-2009 at 13:46.
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Old 21-Aug-2009, 21:45   #24
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Few reviews floating around put i5 some 10% slower then i7
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Old 21-Aug-2009, 22:49   #25
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Quote:
Originally Posted by RancidLunchmeat View Post
Does anybody really take power consumption into consideration? Seriously?
Only in a, "Does my PSU still provide enough go-go juice for my rig if I add this?", kind of way; and in regards to heat as Davros said.
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