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Quad Core CPU's ETA 2007 - Page 5

post #41 of 50
Quote:
Originally Posted by HrnyGoat
Contrary to popular belief, L1 cache is not expensive. L1 cache costs exactly the same the amount is L2 cahce or any other component on the CPU. The only reason they dont add more L1 is that L1 cache has extremely low latency, and the more you add, the more the latency increases. So that is why they keep it so small, in order to mantain that exteme low latency.
What are you basing that statement on? I've read several times in technical journals how L1 cache is significantly more expensive than L2 and is the reasoning that it comes in lower quantities, not because they can't make it larger without slowing it down. Here's geek.com's definition of L1 cache just for some thought...

L1 cache (Level 1 Cache) - A small piece of very fast memory that's almost always on the CPU chip itself. It sits between the CPU registers and the L2 cache. Typically L1 cache has a lower latency than L2 cache, making it more expensive to produce and harder to produce in larger quantities without additional complexity.
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post #42 of 50
Dual Core -- AMD vs Intel

Read Me - http://reviews.cnet.com/4520-10442_7....html?tag=lnav

sorry for my intel guys...

they have to keep the sizes of the l1-l2 caches down or the speed wont be as fast like the other guy said...
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post #43 of 50
After quad-core they might have a heating issuse so you could get a Mobo with dual CPU slots and have 8 cores and have 4 card SLI lol and 16GB of ram. You could have 4 15k hard drives and 2 X-FI's lol. I don't think you would need that much speed and it would cost over $10,000, but at least you know you won't need to upgrade... ever. Maybe 7.2 Surround Sound in DD Pro Logic IIIIII and a 28" LCD Monitor. That would be sweet.
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post #44 of 50
Quote:
Originally Posted by sccr64472
What are you basing that statement on? I've read several times in technical journals how L1 cache is significantly more expensive than L2 and is the reasoning that it comes in lower quantities, not because they can't make it larger without slowing it down. Here's geek.com's definition of L1 cache just for some thought...

L1 cache (Level 1 Cache) - A small piece of very fast memory that's almost always on the CPU chip itself. It sits between the CPU registers and the L2 cache. Typically L1 cache has a lower latency than L2 cache, making it more expensive to produce and harder to produce in larger quantities without additional complexity.
CPUs are produced using lithography, which basically is applying a layer of silicon or metal and then etching it away with light. In other words, they simply "draw" the compenents onto the CPU. "Drawing" L1 cache on a CPU die costs just the same as "drawing" any other component. Like I said before the only reason they dont add more L1 cache is because it increases the latency to the point where the high latency outweighs the advantage of a larger cache.
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post #45 of 50
Quote:
Originally Posted by Ninja_Boy
After quad-core they might have a heating issuse so you could get a Mobo with dual CPU slots and have 8 cores and have 4 card SLI lol and 16GB of ram. You could have 4 15k hard drives and 2 X-FI's lol. I don't think you would need that much speed and it would cost over $10,000, but at least you know you won't need to upgrade... ever. Maybe 7.2 Surround Sound in DD Pro Logic IIIIII and a 28" LCD Monitor. That would be sweet.
You can already get most of that with a high-end workstaion motherboard. I would bet by the time Intel and AMD start producing quad core processors, they'd be building them on 45nm transistors, which according to Intel's projections at least, use about 1/8th the power of their 90nm fab. Quad core chips could probably run cooler than current single core chips. I say bring on the cores, once more software becomes multithreaded, the program can make use of any processor you have avaiable. It's not just dual threading, it's multithreading, where the only limit of threads you can run is either the number supported by the OS or by how many processors you have.
You lack the other part of the fab process. I believe someone posted here it costs Intel about $38 in materials and labor to build a Pentium 4. But that's not factoring in the research and development in designing the processor. To add more cache, they need to design it differently and change the structure to keep the latencies lower, that designing costs extra money. And with L1 cache needed to be exceptionally fast and almost zero latency, I bet the design process is quite complex.
    
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post #46 of 50
do the processor companys not just use other processors to map out the new processors? After all mapping super complex circuitry is best done by super complex circuitry.
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post #47 of 50
yeah yiffygriffy. Greatly explaind greatly apretiated.
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post #48 of 50
Can't wait! 1/8th the power of current-gen CPU's? My TEC will come really handy then!
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post #49 of 50
Quote:
Originally Posted by The_Jester
do the processor companys not just use other processors to map out the new processors? After all mapping super complex circuitry is best done by super complex circuitry.
Pretty much. CPUs are so complex now that they have to be designed by computers.
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Very nice!
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post #50 of 50
Quote:
Originally Posted by J3r3my
Pretty much. CPUs are so complex now that they have to be designed by computers.
Hmm..... Computers designing computers!? Sounds like a quote from The Matrix....
    
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