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i5 in terms of p4

post #1 of 15
Thread Starter 
Hello,
I'm using a p4 3.0 for almost five years and I'm planning to buy a notebook soon. But I'm having hard to time understanding the values of the modern CPU's.
When I bough my pc it was "ghz = speed"
I thinking about buying a i7 2 Ghz and I will be using same lighweight arch linux openbox combo, what kinda speed increase I should expect? double? triple? less?

I wish to understand cpu slang better, but customer guides I found was no-brainers telling you what do. Can someone point me some good(not too detailed) documentation?
post #2 of 15
There is no comparison honestly. The P4 is seriously that old.

Imagine like a 50GHz Pentium 4, but it could actually multitask VERY well. That's what the i7 will be like.
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post #3 of 15
It's really hard to gauge it properly in simple terms due to differences in architecture.

If you want a rough look at what performance you will get CPUBENCHMARK.NET can give you a good idea at a quick glance if you check both processors.

I can tell you now though that even though the i7 has less grunt, the multitasking ability due to the 4-cores will blow away the P4.
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post #4 of 15
Quote:
Originally Posted by Browncoat View Post
It's really hard to gauge it properly in simple terms due to differences in architecture.

If you want a rough look at what performance you will get CPUBENCHMARK.NET can give you a good idea at a quick glance if you check both processors.

I can tell you now though that even though the i7 has less grunt, the multitasking ability due to the 4-cores will blow away the P4.
In that benchmark...

Pentium 4 @ 3.0GHz = 491
Core i7m @ 2.0GHz = 4438
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post #5 of 15
Quote:
Originally Posted by pioneerisloud View Post
In that benchmark...

Pentium 4 @ 3.0GHz = 491
Core i7m @ 2.0GHz = 4438
Cheers - wasn't sure exactly what ones he wanted.

Although the benchmark itself is not perfectly accurate performance wise, especially with overclocking involved it just shows the significant difference in points from PassMark which I would count as a quite a reliable source.
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post #6 of 15
Here are some benchmarks between a Pentium 4 660 (3.6 GHz) and an Intel i7 2600k (3.4 GHz):

Anandtech bench.

Keep in mind the Pentium 4 is single core where as the 2600k is quad core. Lower end i7's on laptops may not perform as well as the desktop i7's so ymmv.

According to the single-threaded Cinebench benchmark, an i7 2600k is about 3 times as fast as the P4 660. For multi-threaded apps, 2600k will be even faster.
Edited by Riou - 8/16/11 at 4:18am
post #7 of 15
Quote:
Originally Posted by NepWK View Post
Hello,
I'm using a p4 3.0 for almost five years and I'm planning to buy a notebook soon. But I'm having hard to time understanding the values of the modern CPU's.
When I bough my pc it was "ghz = speed"
I thinking about buying a i7 2 Ghz and I will be using same lighweight arch linux openbox combo, what kinda speed increase I should expect? double? triple? less?

I wish to understand cpu slang better, but customer guides I found was no-brainers telling you what do. Can someone point me some good(not too detailed) documentation?
Even back in the Pentium 4 days, it wasn't frequency equals speed (the Pentium 4 had a deceptively high frequency compared to it's "speed" as the Athlons and even Pentium III were faster at an equal clock speed), but I know what you mean since frequency stopped scaling like the old days.

Honestly, it's hard to say. There is no comparison though. Some of the 1.8GHz Pentium Dual-cores (not Pentium Ds!), which were Core 2 Duos with less L2 cache and FSB, handily trounced Pentium 4s. A Core i7 will be even faster. However, a mobile Core i7 isn't the same as a desktop Core i7, so keep that in mind. In any case, I tried a Pentium 4 at 4.5GHz, and it was still rather slow. It did not compare to my Core 2 Duo at all. Again, it's hard to put a percentage or number on it, as it'll depend on the task, but let's just say "that new magnitudes faster feel".
post #8 of 15
Thread Starter 
Thanks for all replies, I see know that p4 and i7 are apples are oranges now.

Can anyone advice me some reading about new cpu tecnologies? I wish to learn more about the subject
post #9 of 15
What are your needs with your notebook?
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post #10 of 15
Quote:
Originally Posted by NepWK View Post
Thanks for all replies, I see know that p4 and i7 are apples are oranges now.

Can anyone advice me some reading about new cpu tecnologies? I wish to learn more about the subject
Anything Nehalem, Westmere, Sandy Bridge, Bulldozer, Ivy Bridge.
    
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