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Upgrade Sandy Bridge -> Skylane - Page 3

post #21 of 24
Quote:
You will get 20-25% increase in best cases.

More for a couple games, 38% for x264 video encoding actually (~65% if including HT). But relatively small, given 4.5 years of CPU development.

On the used 3770k; I don't agree, they're far harder to cool than a 2500k (by around 25-30c). IPC gain is small and offset by loss of clocks - you're mostly looking at gaining Hyperthreading, which doesn't have that much value to a CPU-bound gamer. It's notable for some other tasks, but still preferable to have a 6600k.
Quote:
But again I am not even impressed by the increase in performance between my i7 870 and my 5820K when both are OCed, lol. I got around 35-40% more performance in cpu intensive situations

You're probably using singlethreaded performance limited stuff; in that case, you wasted money on HT and 6-core and would have same results with a 4670k.

If you look at encoding, Sandy to Haswell improved IPC by ~21%. You have 50% more cores. Logically, you should be at least ~1.75x faster - likely closer to 2x when considering the IPC increase from Nehalem to Sandy. Tasks that can utilize many cores and threads efficiently would be way up there too - with double the performance gains you said. If that's not what you're running and you're budget limited, you just made a bad CPU choice
Edited by Cyro999 - 10/20/15 at 6:05am
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post #22 of 24
Quote:
Originally Posted by Cyro999 View Post


You're probably using singlethreaded performance limited stuff; in that case, you wasted money on HT and 6-core and would have same results with a 4670k.

If you look at encoding, Sandy to Haswell improved IPC by ~21%. You have 50% more cores. Logically, you should be at least ~1.75x faster - likely closer to 2x when considering the IPC increase from Nehalem to Sandy. Tasks that can utilize many cores and threads efficiently would be way up there too - with double the performance gains you said. If that's not what you're running and you're budget limited, you just made a bad CPU choice

Most of my stuff are not heavily threaded (for now at least). 4670K will be a side-grade and due to the lack of HT it is a no go for me. It will beat my old i7 870 in single-threaded apps and apps that don't benefit from HT. But will be a side/ down-grade in apps that do benefit from HT.
As for my choice being bad I disagree. 5820K for me made the most sense at the time of upgrading, costed only slightly more than 4790K, but has extra 2 cores which makes it much better in games that detect more than 4 cores. Yeah, mobos and DDR4 kits costed much more at the time, but even with that I thought It was a much better choice.
While most apps today don't recognize 6 cores, there is a chance that might change in the future, and I don't upgrade with each generation.
Edited by HeadlessKnight - 10/20/15 at 10:06am
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post #23 of 24
Quote:
Originally Posted by PontiacGTX View Post

the best upgrade would be an useed i7 3770k
QFT. You'll get slightly higher performance per clock and hyperthreading as well. If you need the benefits of i7, keep your mobo and ram and go 3770k. If 4 cores and no HT is enough for what you do, then stay with your current cpu.
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post #24 of 24
Quote:
Originally Posted by KalashNK View Post

Is it worth the price? Even used it seems you don't find it less than 150/200.

well, it is still cheaper than going to buy a whole new system. get an i7 3770K, oc it a little and the money saved . . . a new 980Ti.

Like i said, a reviewer saw it fine to match an i7 ivy with not one but two 980Ti. lol. I think it was a bit overboard. one will suffice.
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