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[LR] Hands On With Devil’s Canyon – Intel Haswell Refresh - Page 8

post #71 of 106
Quote:
Originally Posted by mav451 View Post

Pfft - $75 new or go home you mean tongue.gif

These new chips would need to clock *significantly* better than my current chip to even be considered. Regardless, more important is if this sets a precedent for future chips going forward.

Your chip would be much faster with hyperthreading on anything using more than 5-6 threads efficiently. A natural assumption is to think that those are only virtual fake threads. But in reality they share the real Cache in reality, they actually split it between them physically. That's one of the reasons they are a real benefit. They create real better flow.
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post #72 of 106
Quote:
Originally Posted by fateswarm View Post

Your chip would be much faster with hyperthreading on anything using more than 5-6 threads efficiently. A natural assumption is to think that those are only virtual fake threads. But in reality they share the real Cache in reality, they actually split it between them physically. That's one of the reasons they are a real benefit. They create real better flow.
they also add heat. 4770k vs 4670k can show 10c differnce at load. Thats why 4670k can have more oc headroom if the chips are compareble. The hyperthreaded virual core function with 50% of the resources of a whole core so its less powerful per core using ht.
Edited by Wirerat - 3/25/14 at 6:35am
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post #73 of 106
Yeah it's faster, so what it's hotter. No reason to analyse it here, look at benchmarks. The same chip virtually on hyperthreading, e.g. your card going to a 4770 shoots up to the sky in performance.

Provided of course it's something that can use more than 5-6 threads properly.
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post #74 of 106
Quote:
Originally Posted by Jack Mac View Post

P67, Z68, and Z77 were all on the same socket though.

Quote:
Originally Posted by Cyro999 View Post

Ivy bridge dropped into sandy bridge boards. That would be the equivalent of Haswell refresh and Broadwell dropping into z87.

Not sure where I implied that each north bridge release had a unique socket...
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post #75 of 106
If Devil's Canyon does require 9 series boards, it's probably due to some minor change in power delivery guidelines (which 9 series boards will all support), and not the chipset itself.
Quote:
Originally Posted by Wirerat View Post

The hyperthreaded virual core function with 50% of the resources of a whole core so its less powerful per core using ht.

This is flatly incorrect.

Hyperthreading doesn't deprive another thread of any resources unless tasks are scheduled to both logical processors on the same core, and in a well configured system this normally does not happen unless all physical cores are already utilized. When threads are scheduled to the same core, performance of each thread is typically greater than 50% of what they would see if run separately, with only rare exceptions.

Hyperthreading exists to extract more performance and efficiency from an execution pipeline, something it is usually quite good at, and something that almost never negatively impacts lightly threaded performance.
Quote:
Originally Posted by fateswarm View Post

Yeah it's faster, so what it's hotter.

Yep. The more work done, the more current used.

Hyperthreading is actually very power efficient in most cases. When not utilized it does nothing to performance or power consumption, when effectively utilized, it increases performance proportionally more than it increases power consumption.
Quote:
Originally Posted by Slomo4shO View Post

Not sure where I implied that each north bridge release had a unique socket...

A bit of a nitpick, but a PCH isn't a northbridge. Indeed a northbridge hasn't been a part of Intel chipsets since LGA-775.
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post #76 of 106
Quote:
Originally Posted by Blameless View Post

This is flatly incorrect..

I didnt say performance was cut in by 50% per core. The gains are actually around 20-25% for the total output when its utilized. I said the resources of the extra ht cores do not equal a full core. Otherwise it would scale up to double performance when using ht. We could only wish it would scale that well.
Edited by Wirerat - 3/25/14 at 10:43am
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post #77 of 106
HT adds about 25% more grunt. You can see this by using CineBench (as one example). If a quad w/HT gets 1 point on single, it will get 4 on multi thread w/o HT, and 5 w/HT. My main concern when I get my i7E is that I'll be playing a game like Skyrim, and both threads for the game gets run on the same core. If that happens, I'll see lower frame rates.

EDIT: It's like this:

Core 0 with HT with one thread being used: Thread 1: 100% efficiency, Thread 2: idle
Core 0 with HT with two threads being used: Thread 1: 62.5% efficiency, Thread 2: 62.5% efficiency
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post #78 of 106
So H97/Z97 chipsets + haswell refresh CPUs will be here in 1 month?
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post #79 of 106
Quote:
Originally Posted by AcEsSalvation View Post

HT adds about 25% more grunt. You can see this by using CineBench (as one example). If a quad w/HT gets 1 point on single, it will get 4 on multi thread w/o HT, and 5 w/HT. My main concern when I get my i7E is that I'll be playing a game like Skyrim, and both threads for the game gets run on the same core. If that happens, I'll see lower frame rates.

EDIT: It's like this:

Core 0 with HT with one thread being used: Thread 1: 100% efficiency, Thread 2: idle
Core 0 with HT with two threads being used: Thread 1: 62.5% efficiency, Thread 2: 62.5% efficiency
no ht doesnt work like that. The game or software has to be coded to use more than 4 cores. Skyrim would just use 2 cores no ht.
Edited by Wirerat - 3/25/14 at 12:21pm
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Bitspower DDC Heatsink Black EK Coolstream XTC 140mm Rad EK Supremecy MX  EK FC980 Strix Water Block 
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post #80 of 106
I just don't understand why is it that intel can release basically the same exact CPU over again, only difference being something they should have gotten right from the beginning (heat spreader TIM) Not only is this such a minimal re-fresh but it requires yet another new motherboard with the exact same socket.... And people are excited about it ??? I don't have anything against intel but I gotta say this is just downright garbage.
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