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[extremetech] Intel Begins Making Next-Gen 'Nehalem' Pitch

post #1 of 12
Thread Starter 
Quote:
Intel provided an architectural update to its roadmap on Monday, setting the stage for its transition into the "Nehalem" architecture near the end of the year.
At that point, users will have a choice: stick with the tried-and-true "Penryn" architecture (currently sold as the Core 2 Duo) or transition into Nehalem, a modular architecture that will will integrate the CPU and core logic from three into two chips. From there, all eyes will be cast toward "Larrabee," Intel's planned integration of the graphics controller into the CPU, and when Intel will re-enter the discrete graphics market.
Quote:
Nehalem will also be an attempt to shift the market to the next-generation DDR-3 specification. The chip will include an integrated memory controller supporting either DDR3-800, 1066, and 1333 speeds, as well as support both Registered and Unregistered DIMMs (RDIMMs and UDIMMs, respectively).
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post #2 of 12
It will only support DDR3-800, 1066, and 1333? That sucks. DDR3 1333 isn't even that much faster than DDR2 1066.
    
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post #3 of 12
Quote:
Originally Posted by jonny1989 View Post
It will only support DDR3-800, 1066, and 1333? That sucks. DDR3 1333 isn't even that much faster than DDR2 1066.
It is quite a bit faster actually, about 25%. Nehalem seems like it is going to memory bandwidth intensive. Why else would they put triple channel memory controller on the chip?
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post #4 of 12
Quote:
Originally Posted by jonny1989 View Post
It will only support DDR3-800, 1066, and 1333? That sucks. DDR3 1333 isn't even that much faster than DDR2 1066.
And the way that Nehalem is supposed to handle memory and memory caching is supposed to be much more efficient than todays chips. So DDR3-800 will be significantly faster.
    
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post #5 of 12
DDR3 1333 in any current intel motherboard and chipset is not even close to being 25% faster. It's maybe 2% at the most.

I'm sure it will be faster with the in die memory controller. I've seen some tests were DDR3 1333 in a Intel board got less than 7000Mb/s of bandwidth were as with my AMD board and a 590 sli chipset I get 9000+ Mb/s of memory bandwidth form DDR2 1066
    
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post #6 of 12
1333MHz CL7-7-7-20 vs. 1066MHz CL4-4-4-12
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post #7 of 12
Quote:
Originally Posted by jonny1989 View Post
DDR3 1333 in any current intel motherboard and chipset is not even close to being 25% faster. It's maybe 2% at the most.

I'm sure it will be faster with the in die memory controller. I've seen some tests were DDR3 1333 in a Intel board got less than 7000Mb/s of bandwidth were as with my AMD board and a 590 sli chipset I get 9000+ Mb/s of memory bandwidth form DDR2 1066
Have you forgotten that you are comparing DDR2 to DDR3 and not Intel Northbridge vs AMD IMC. How can you objectively look at the difference between DDR2 and DDR3 when they are using completely different memory management.

Imagine the bandwidth you would get out of DDR3 on a AMD chip .
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post #8 of 12
Quote:
Originally Posted by jonny1989 View Post
.....as with my AMD board and a 590 sli chipset I get 9000+ Mb/s of memory bandwidth form DDR2 1066
Granted the X38 is newer than the 590, but my intel board gets around 8300Mb/s at DDR2 800 and 10K+ at DDR2 1066. Latency sucks at DDR2 1066 (72ns)though, where as at DDR2 800 my latency should compete closely with that 590 AMD board.....around 44ns. Intel's current NB MCH layout, while inferrior to AMD's on-die solution, does compete rather well.
Quote:
Originally Posted by pauldovi View Post
Imagine the bandwidth you would get out of DDR3 on a AMD chip .
Nehalem with it's AMD like on-die MCH is going to PWN with DDR3.
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post #9 of 12
umm i think ill want to "transition" once i see what these chips can do. AMD always praised their "revolutionary" ideas and ended up with a slow chip, period. if i see these chips beat out core 2 chips by like a factor of 5, then id be interested.
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post #10 of 12
Quote:
Originally Posted by pauldovi View Post
It is quite a bit faster actually, about 25%. Nehalem seems like it is going to memory bandwidth intensive. Why else would they put triple channel memory controller on the chip?
but the purpose of ddr3 is it's ability to get crazy speeds, being limited to 1333mhz is kinda crappy.
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