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Gulftown Seamlessly Compatible with X58 Chipset Platform

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#26
It is. Nehalem sucks at games--so did Pentium 4. Nehalem has hyperthreading--so did Pentium 4. Nehalem kicks ass at multimedia--so did Pentium 4. Nehalem runs hot--so did Pentium 4. Nehalem codename was supposed to be a Pentium 4 (~2000) with Common System Interface (CSI). CSI is now known as "QuickPath Interface." Nehalem was scraped and revived many times until about a year prior to the release of Core 2. Everything about Nehalem screams Netburst.


There's only two things different about Nehalem that wasn't there on the original Netburst codename: multi-core and turbo mode. Multi-core because the dual- and quad-core revolution didn't start until 2005 and turbo mode was a revival from the 286, 386, and 486. I have no idea why they did. Perhaps it is because Nehalem has a core clock of 133 MHz so 1x or 2x more on the multiplier isn't going to hurt anything.
So basically when I upgraded from a Pentium 4 560 (Prescott) to a Core i7 920 I just "modernized" more or less? :laugh:
 

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#27
It is. Nehalem sucks at games--so did Pentium 4. Nehalem has hyperthreading--so did Pentium 4. Nehalem kicks ass at multimedia--so did Pentium 4. Nehalem runs hot--so did Pentium 4. Nehalem codename was supposed to be a Pentium 4 (~2000) with Common System Interface (CSI). CSI is now known as "QuickPath Interface." Nehalem was scraped and revived many times until about a year prior to the release of Core 2. Everything about Nehalem screams Netburst.


There's only two things different about Nehalem that wasn't there on the original Netburst codename: multi-core and turbo mode. Multi-core because the dual- and quad-core revolution didn't start until 2005 and turbo mode was a revival from the 286, 386, and 486. I have no idea why they did. Perhaps it is because Nehalem has a core clock of 133 MHz so 1x or 2x more on the multiplier isn't going to hurt anything.
No, architecturally, it has nothing to do with P4. The only thing they have in common is Hyper Threading, but Nehalem's version is actually completely different in operation, and some code names. Nehalem is still based heavily on Core 2, which gets its roots from P3. Reviving the idea of an interconnect like "CSI", or the use of multiple threads from a single core, does not make it related to netburst. It just means the engineering department recycled some terms.

We wouldn't be seeing the IPC we are if it's roots were in netburst. Even with HTT disabled, it's IPC is higher then all other current x86 chips out. Netburst failed miserably at ipc, due to it's retarded long and narrow pipelines that favored clock speed over ipc whick took forever to flush in case of a cache miss or prediction error (which was what made it the netburst architecture.) Nehalem does not have long and narrow pipes. Even with todays much improved branch prediction, netburst still couldn't be made this efficient.

And it does not suck at gaming. Where in the hell do you get that conclusion? Just because it doesn't benefit gaming, doesn't mean it sucks at it. Almost all games on the market are gpu limited. The cpu makes no difference to gameplay (within reason, of course).
 

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#28
So basically when I upgraded from a Pentium 4 560 (Prescott) to a Core i7 920 I just "modernized" more or less? :laugh:
Pretty much--from a broken Netburst to a properly functioning Netburst. ;)



Netburst had serious leakage and cache miss issues. Nehalem has the leakage and caching issues fixed.

Penryn has 14 stages. Early Netburst processors have 20 stages. Later Netburst processors (Prescott) have 32 stages. Guesstimates put Nehalem at somewhere between 20 and 24 stages.

The SMT capabilties of Netburst were strapped on after they realized how much of the processor sat idle. Nehalem was designed knowing SMT was going to be included so it is a much better implementation.

Nehalem is effectively Netburst done right. Remember, Intel spent over 7 years trying to fix Netburst and never really succeeded.


And it does not suck at gaming. Where in the hell do you get that conclusion? Just because it doesn't benefit gaming, doesn't mean it sucks at it. Almost all games on the market are gpu limited. The cpu makes no difference to gameplay (within reason, of course).
At low resolutions where the CPU is the most important, Nehalem does better. The higher the resolution, the worse Nehalem does compared to Core 2 and Phenom II. I've never found an explaination for this--perhaps a shortcoming of QPI.
 

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#29
Pretty much--from a broken Netburst to a properly functioning Netburst. ;)



Netburst had serious leakage and cache miss issues. Nehalem has the leakage and caching issues fixed.

Penryn has 14 stages. Early Netburst processors have 20 stages. Later Netburst processors (Prescott) have 32 stages. Guesstimates put Nehalem at somewhere between 20 and 24 stages.

The SMT capabilties of Netburst were strapped on after they realized how much of the processor sat idle. Nehalem was designed knowing SMT was going to be included so it is a much better implementation.

Nehalem is effectively Netburst done right. Remember, Intel spent over 7 years trying to fix Netburst and never really succeeded.



At low resolutions where the CPU is the most important, Nehalem does better. The higher the resolution, the worse Nehalem does compared to Core 2 and Phenom II. I've never found an explaination for this--perhaps a shortcoming of QPI.
Again, having similarities to netburst, does not make it a derivative of netburst.

And all the tests I've seen show i7 slightly ahead at higher resolutions in most games, with only a couple of exceptions. Even tho i7 pulls ahead slightly, it makes no real difference anyway, as the playability remains the same between all the chips at high res gaming. Thus, no modern chips actually "suck" at gaming.
 

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#30
Again, having similarities to netburst, does not make it a derivative of netburst.
Does having a child look like you not make it your child? Unfortunately, processors don't have DNA to test.
 

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#31
Does having a child look like you not make it your child? Unfortunately, processors don't have DNA to test.
My nephew looks like me, but is not my child.
 

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#32
You and him are both humans making you 99.900% alike, genetically. Considering heredity, you are no less than 99.925% alike.

Shall we stick a percentage on how alike Pentium 3, Pentium 4, Core 2, and Core i7 are? It might be fun. :D
 
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Wile E

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#33
You and him are both humans making you 99.900% alike, genetically. Considering heredity, you are no less than 99.925% alike.

Shall we stick a percentage on how alike Pentium 3, Pentium 4, Core 2, and Core i7 are? It might be fun. :D
Go right ahead.
 

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#34
But...what definies the architecture? SMT for sure does. I'd argue that SSE doesn't because such technologies can be integrated into pretty much any x86 architecture. x86-64 does...

Maybe MCM... but multi-core really isn't an architectural feature.
 

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#35
But...what definies the architecture? SMT for sure does. I'd argue that SSE doesn't because such technologies can be integrated into pretty much any x86 architecture. x86-64 does...

Maybe MCM... but multi-core really isn't an architectural feature.
SMT doesn't define it, if it's designed in a completely different manner than the original SMT. Only the concept itself remains, not the design.
 

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#36
So, then, what does? XD

I'm down to just x86-64/x86 now. :(
 

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#37
So, then, what does? XD

I'm down to just x86-64/x86 now. :(
That's what I mean. There's nothing to link it directly to netburst, aside from a longer pipe than Core2. Likely, it's a derivative of both.
 

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#38
It is my belief that it borrows more from Netburst than it does from P6. At the same time, I think they may have started with a clean slate and aimed for what the original Nehalem had promised (high clock speeds, SMT, and CSI).
 
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#39
so X58 still around more than other mobo's