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[OC3D] AMD's Zen will have a "greater than 40%" IPC improvement over Excavator, says Lisa Su - Page 32

post #311 of 841
Quote:
Originally Posted by Hattifnatten View Post

Frequency does not matter one bit when comparing IPC. IPC is how many instructions can be carried out per clock/cycle. If one cpu can do 1 operation per cycle, and another one does 2, that's double the IPC. But if the first one is clocked to 2Ghz (2 billion cycles per second), and the second one is clocked to 1Ghz, they perform just as many operations per second. IPC * Hz = performance.

Awh got it, I was confused.
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post #312 of 841
Quote:
Originally Posted by Hattifnatten View Post

Frequency does not matter one bit when comparing IPC. IPC is how many instructions can be carried out per clock/cycle. If one cpu can do 1 operation per cycle, and another one does 2, that's double the IPC. But if the first one is clocked to 2Ghz (2 billion cycles per second), and the second one is clocked to 1Ghz, they perform just as many operations per second. IPC * Hz = performance.

The correct term is IPC * Hz = IPS biggrin.gif
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post #313 of 841
Quote:
Originally Posted by sugarhell View Post

The correct term is IPC * Hz = IPS biggrin.gif

I thought so. You're both confusing me now! I know enough to be dangerous, but let's be honest I don't know as much as some of the talent on here.

The question to representative has been asked, and I'll just post if I get a message back.

I'll let you confusing jerks decipher it.
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post #314 of 841
Quote:
Originally Posted by SpeedyVT View Post

I thought so. You're both confusing me now! I know enough to be dangerous, but let's be honest I don't know as much as some of the talent on here.

The question to representative has been asked, and I'll just post if I get a message back.

I'll let you confusing jerks decipher it.

Don't be confused. IPS = performance.
post #315 of 841
Quote:
Originally Posted by xxdarkreap3rxx View Post

Don't be confused. IPS = performance.
'

Well all I know is that AMD is very messy about their description on performance of IPC and IPS. Remember that whole FX debacle back in the day! It's faster it's better! Stock to stock, yeah! You matched it clock to clock and the IPC of the Phenom II was better, providing you could get it's clock that high.

So really AMD misusing the words meant IPS not IPC when comparing performance.
Edited by SpeedyVT - 1/26/16 at 11:05am
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post #316 of 841
Quote:
Originally Posted by SpeedyVT View Post

'

Well all I know is that AMD is very messy about their description on performance of IPC and IPS. Remember that whole FX debacle back in the day! It's faster it's better! Stock to stock, yeah! You matched it clock to clock and the IPC of the Phenom II was better, providing you could get it's clock that high.

Man I don't even remember much after AMD went to hell. The 3500+ Athlon 64 was the last one I owned and haven't really kept up with their architecture names or performance details frown.gif
post #317 of 841
Quote:
Originally Posted by xxdarkreap3rxx View Post

Man I don't even remember much after AMD went to hell. The 3500+ Athlon 64 was the last one I owned and haven't really kept up with their architecture names or performance details frown.gif

I'm just hoping we can get an accurate understanding of Zen eventually.
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post #318 of 841
Quote:
Originally Posted by SpeedyVT View Post

I'm just hoping we can get an accurate understanding of Zen eventually.

The main article makes it pretty clear but we won't truly know until they're in the hands of reviewers and the NDA is lifted.
post #319 of 841
Well, AMD is launching carrizo in march/april... still nothing about AM4.

TheStill said that ZEN will be smaller than Skylake and will reach around 4.0-4.5GHz. Could be ZEN more power efficient?
post #320 of 841
Quote:
Originally Posted by Themisseble View Post

Well, AMD is launching carrizo in march/april... still nothing about AM4.

TheStill said that ZEN will be smaller than Skylake and will reach around 4.0-4.5GHz. Could be ZEN more power efficient?

Will Carrizo desktop be both AM3+ and AM4? I noticed it supports both DDR4 and 3. I may want a Carrizo before a Zen till I can save up enough and slowly transplant the Carrizo into the AM4.
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