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Old 01-30-2018, 09:27 AM
 
Location: Somewhere in Colorado
154 posts, read 105,045 times
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The computer I built 5+ years ago holds a record -- I don't think I've ever had one that long; usually replaced with something faster/better. This box has a 3.8 GHz i7, etc...

So, was looking online and it seems that the big difference between a 2012 i7 and a 2018 i7 is that the newer versions are 7th and 8th Gen, while they were 2nd and 3rd gen five years ago. Basically the same clock speeds, but it looks like memory is faster.

Are the days over when you can replace a 5-year old high end machine and get a decent performance improvement?
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Old 01-30-2018, 09:37 AM
 
Location: Cleveland, Ohio
11,825 posts, read 13,966,567 times
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What? No.
An 8th generation i7 will utterly and completely destroy a 2nd, 3rd, or 4th gen i7. A HUGE improvement.
It's NOT all about clock speed.

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Old 01-30-2018, 10:41 AM
 
Location: Wandering.
3,545 posts, read 5,680,797 times
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The 8th gen i7 is almost twice as fast as the 3rd gen.
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Old 01-31-2018, 01:08 AM
 
Location: Raleigh, NC
2,296 posts, read 3,489,851 times
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The newer generation CPUs have more threads, are more efficient and can handle better memory.
The RAM is faster, the power supplies larger and more robust,
The internal buses are much faster,
The motherboards are designed to handle much higher performance, and some are designed specifically for overclocking and such. IE: hobbyists who want to squeak out even more performance.
The hard disk drives are vastly larger and substantially cheaper.

Yea, the new systems are better than the old ones.
I tend to upgrade my systems every 3-4 years or so. I upgrade about 60% of my boxes components, leap-frogging the performance at a big cost savings.
I'd get a new CPU + motherboard and reuse the DVD burners and internal hard disk drives (that have been added over the years and super easy to transfer over). This cuts back on a full replacement cost by about half or more.
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Old 01-31-2018, 10:11 PM
 
Location: Vallejo
14,518 posts, read 16,543,509 times
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Quote:
Originally Posted by Peregrine View Post
What? No.
An 8th generation i7 will utterly and completely destroy a 2nd, 3rd, or 4th gen i7. A HUGE improvement.
It's NOT all about clock speed.
Not really.

An i7 8700K is about 20% faster single-thread performance than 4770k. Multi-core it's about 60% more. More cores. If you're using something that's optimized to use those more cores, 60% faster gets into destroys territory. If you're not, meh. It's faster for sure but not destroys faster.

Productivity you'll often see in a 40-60% gain going from a 4th generation to 8th generation as it can often, but not always, utilize the extra cores. Gaming or other things that aren't that optimized for multicore it's kind of meh. Maybe 10-15% more FPS at 1080p if you're talking about a high-end GPU, minimal to no difference with older or budget GPUs or higher resolution.

Last edited by Malloric; 01-31-2018 at 10:31 PM..
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Old 01-31-2018, 10:20 PM
 
Location: Vallejo
14,518 posts, read 16,543,509 times
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Quote:
Originally Posted by Ed_RDNC View Post
The newer generation CPUs have more threads, are more efficient and can handle better memory.
The RAM is faster, the power supplies larger and more robust,
The internal buses are much faster,
The motherboards are designed to handle much higher performance, and some are designed specifically for overclocking and such. IE: hobbyists who want to squeak out even more performance.
The hard disk drives are vastly larger and substantially cheaper.

Yea, the new systems are better than the old ones.
I tend to upgrade my systems every 3-4 years or so. I upgrade about 60% of my boxes components, leap-frogging the performance at a big cost savings.
I'd get a new CPU + motherboard and reuse the DVD burners and internal hard disk drives (that have been added over the years and super easy to transfer over). This cuts back on a full replacement cost by about half or more.
Same, although last build I was still trying to use IDE stuff so a couple spinners and the optical drive never made it across. It's also fugly. Running an old non-modular PSU that wasn't designed for bottom PSU placement. The wires aren't long enough to route behind the motherboard. No window so it doesn't really matter but, yeah, probably replace that PSU when I do my next build with a modular one.
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Old 02-01-2018, 09:16 AM
 
Location: Cleveland, Ohio
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Quote:
Originally Posted by Malloric View Post
Not really.

An i7 8700K is about 20% faster single-thread performance than 4770k.
OK. Now versus a 2nd gen?
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Old 02-01-2018, 08:09 PM
 
Location: Vallejo
14,518 posts, read 16,543,509 times
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Quote:
Originally Posted by Peregrine View Post
OK. Now versus a 2nd gen?
35% or so faster single-thread.

It's not a massively huge difference. To put that in some comparison, a 1070 is about 50% faster than a 970 is. a GTX 1070 absolutely does curb stomp a GTX 570. An 8700k and a 2700k, well, not so much. It's faster but not overwhelmingly. Once again, most of the difference comes from more cores on the 8th generation.

Say you're running an aging computer with a 2700k and GTX570. The 570 is REALLY going to struggle on modern games. Probably still playable on low settings with a bit of chop, but is just slow. If you're trying to push 200 FPS in shooters, a 2nd generation will hold you back. If else, just drop in a 1070 and enjoy. The difference between a 2700k and 8700k with a 1070 is pretty minimal. If gaming on a budget, go ahead and ignore the 8700k. It's $700 that makes only a small difference versus night and day difference replacing a 570 with a 1070.

Now, if you're either looking at productivity where the cores is really useful or looking at high-end cards, it's probably time to upgrade that 2nd generation CPU.
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Old 02-02-2018, 02:46 PM
 
7,155 posts, read 3,912,101 times
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Benchmarks are one thing, real world experience is another. I upgraded from a 2600K to a 4790K (4.8 OC) and am still there for my gaming system. I'm eyeing up the 8700K but don't see the point.

Interesting perspective comparing several generations for gaming.


https://www.youtube.com/watch?v=XHUfSIdyIfw
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Old 02-02-2018, 04:35 PM
 
Location: Vallejo
14,518 posts, read 16,543,509 times
Reputation: 13069
Quote:
Originally Posted by markjames68 View Post
Benchmarks are one thing, real world experience is another. I upgraded from a 2600K to a 4790K (4.8 OC) and am still there for my gaming system. I'm eyeing up the 8700K but don't see the point.

Interesting perspective comparing several generations for gaming.


https://www.youtube.com/watch?v=XHUfSIdyIfw
Note that's with an OCed Titan X. With more mainstream GPUs like a 1070 there's almost no difference in most games average FPS although you do get a boost in minimum frames. Once you start talking about 1080 or faster GPUs, you do start bottlenecking on CPU with the older chips or if playing on low settings for high FPS. Conversely going up to 1440p, 3440x1440 or 4K and the CPU matters less.

Basically, apply common sense. Don't pair a 2600k with a GTX 1080 Ti or Titan for 1080p.
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