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[WCCFT] Leaked Intel Roadmap Details Sandy Bridge-E Flagship CPU “Core i7 3980X” - Page 21

post #201 of 238
Out of my price range anyways frown.gif
    
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post #202 of 238
Quote:
Originally Posted by ZealotKi11er;14518450 
BD does not have to be faster. It has to be a good base to improve on. Look at what happened to ATi when 8800GTX/GTS hit. They could not get anything fast enough but after HD 4800 ATi started closing the gap and surprising Nvidia. Now they fight neck to neck. The way i see it if BD does not pull them out they will probably focus on APUs.

Faster than what? I would damn well hope its faster than current AMD CPUs. laugher.gif
post #203 of 238
Quote:
Originally Posted by ecnelitsep;14517708 
They tested an ivy es dual core vs an i3 at the same clocks. Pretty hard to fake that.

Yeah, because it's impossible to fake Cinebench.

207488d1303779016-amd-32-cores-bulldozer-8-cores-lol.jpg

If that was real though I highly doubt the actual IPC increased. It should've been something else impacting performance. No die shrinks actually improve IPC because they're just the same chip on a smaller manufacturing process.
Edited by Usario - 8/9/11 at 8:31am
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post #204 of 238
Quote:
Originally Posted by Usario;14519408 
If that was real though I highly doubt the actual IPC increased. It should've been something else impacting performance. No die shrinks actually improve IPC because they're just the same chip on a smaller manufacturing process.

Didn't Penryn have a small ~5-10% IPC increase over Conroe? I think its actually quite rare that Intel does a dumb shrink of a chip, they tend to make a few small changes like the implementation of new instruction sets (SSE4.1 for Penryn, AVX for Westmere) or minor IPC improvements.
post #205 of 238
Quote:
Originally Posted by Usario;14519408 
Yeah, because it's impossible to fake Cinebench.

207488d1303779016-amd-32-cores-bulldozer-8-cores-lol.jpg

If that was real though I highly doubt the actual IPC increased. It should've been something else impacting performance. No die shrinks actually improve IPC because they're just the same chip on a smaller manufacturing process.

Tri-gates and other stuff added to Ivy though as well.

I remember mathing out their tests quite extensively and very conclusively finding that Ivy seemed to be a 10-20% IPC gain over Sandy.
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post #206 of 238
Quote:
Originally Posted by gplnpsb;14519699 
Didn't Penryn have a small ~5-10% IPC increase over Conroe? I think its actually quite rare that Intel does a dumb shrink of a chip, they tend to make a few small changes like the implementation of new instruction sets (SSE4.1 for Penryn, AVX for Westmere) or minor IPC improvements.

Those are not IPC improvements. Those are better instruction sets. IPC is the number of instructions a chip can execute per clock cycle. Didn't Penryn also add a ton of extra cache?
Quote:
Originally Posted by kweechy;14519778 
Tri-gates and other stuff added to Ivy though as well.

I remember mathing out their tests quite extensively and very conclusively finding that Ivy seemed to be a 10-20% IPC gain over Sandy.

As I said, if they're real (which they might not be) it's more likely that we're seeing something BESIDES IPC increasing performance.
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post #207 of 238
Quote:
Originally Posted by Usario;14519408 
No die shrinks actually improve IPC because they're just the same chip on a smaller manufacturing process.

that's not the only thing that happens when moving to smaller process, Intel does some improvements on the architecture, and they will do the same on IB.

thankfully, I got history on my side - about two years ago, Westmere came out and was a die shrink (32nm) of Nehalem (45nm), there was a significant increase in IPC.

just google Nehalem vs Westmere, and look at Single Thread benchmarks for the same clocks(Nehalem wasn't HT).

here's one example :
http://www.anandtech.com/show/2777/5
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post #208 of 238
Quote:
Originally Posted by nirxy;14519933 
that's not the only thing that happens when moving to smaller process, intel does some improvements on the architecture, and they will do the same on ib.

Thankfully, i got history on my side - about two years ago, westmere came out and was a die shrink (32nm) of nehalem (45nm), there was a significant increase in ipc.

Just google nehalem vs westmere, and look at single thread benchmarks for the same clocks(nehalem wasn't ht).

Here's one example :
http://www.anandtech.com/show/2777/5

ORLY?

I think the difference below can probably be explained by the extra cache.
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post #209 of 238
Quote:
Originally Posted by ecnelitsep;14498548 
You know how it goes zeal. Some people just think that throwing more cores out there is more important then ipc improvements. Personally i can't wait for the 2500K's replacement.


ignorance...^


For an idea of where the world is headed, just bring up task manager for a clue, then include that and everything else running on ur system. "Cores" are becoming synonymous with tasks.

Chips will relatively stay the same size, while the cores get smaller and more specific to their goal. (20 core/40 core in 5 years time)



Coincidentally, what single threaded program needs speed..? The answer is old business software.. or, if ur a hobbyist who wants things.

If u understand code & how it executes on hardware, you can see how Intel made use of IPC on their cores for business reasons, not for home owner needs. Their whole architecture is directly related to BAPCo.

Windows 8 will be more threaded, as independent functions increase in their speed & unfettered use of their own cores, or cores shared with only a few programs. Instead of congested cores, who have IPC and tricks to pump more through a crowded lane highway.

Unfettered is the key... not speed.
post #210 of 238
Quote:
Originally Posted by Usario;14520069 
ORLY?

I think the difference below can probably be explained by the extra cache.

maybe, it can also be explained by your source and their methodology (some sites forget to turn off turbo lol)

but really, the whole point was to show you that there are architectural differences on Die Shrinks..
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