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Please help he choose a P4

post #1 of 38
Thread Starter 
I have only one day to choose. I'm a budget-minded, but all of these are in my range. What I want is a good overclocker, but I'm also not planning on an extreme overclock because I might live the rest of my life on the stock HS/F.

My applications will consist of some permanent media stuff for entertainment, but what I'll be doing mainly is 2D\\3D design, and I want to be comfortable to go for huge documents.

Those are my requirements, now for the nominees (the only ones I could find in my market). They call come as "Tray".

Here is the document arranged in a table to make them easy to compare.

1. SL7PM:
3E Ghz
1M L2 cache
800 FSB
E0 stepping
CPUID 0F41H
voltage range 1.281 - 1.40 V
Bus/Core ratio: 15

Notes from Intel® say that this piece supports HT™ technology, eventhough I couldn't find in the main (P4 that support HT) page. It also says that this processor supports loadline A, even though I don't know what that is.


2. SL7E4
3E GHz
1M L2 cache
800MHz FSB
Stepping D0
Voltage range 1.25 - 1.40 V
Bus/Core ratio: 15

Notes from Intes® say that this processor supports HT™ technology, even though I couldn't find it in the main (P4 that support HT) page.

3. SL79K
2.8E GHz
1M L2 cache
800MHz FSB
Stepping C0
CPUID 0f33h
Voltage range: 1.25 - 1.525 V
Bus/Core ratio: 14

This processor supports HT™ technology. It was the second one on my list. I was originally searching for its elder brother, SL79L, but during my search, I found the other two, and when I looked at their Specs, I saw eye-candy.
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post #2 of 38
Thread Starter 
They are arragned "most expensive to cheaper". If you think the performance given by the cheaper one would not be noticably different from the more expensive, the please suggest it's like that. I would really like to cut on spendings, because otherwise I will have to run my computer without a keyboard , but if the difference is noticable, then I will pay for it.

Thanking you in anticipation.
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post #3 of 38
The "E0" Stepping Revision will run the coolest and is the best overclocking of the group. Your Best Revisions are top - down.

R
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post #4 of 38
Thread Starter 
So you're saying they're arranged "best to poorest" just like that?

Overclocking wise and default-performance wise?
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post #5 of 38
Thread Starter 
Sorry for double-posting for the second time, but what I really need to know is:

How far is the gap between these? This is in fact my most specific question for this thread. Because I'm trying to compromise between price and performance.
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post #6 of 38
Quote:
Originally Posted by KingRoach
So you're saying they're arranged "best to poorest" just like that?

Overclocking wise and default-performance wise?
Yes. If you look at the Revisions C(0), D(0) and E(0) and research them you will find this out.

Compared to the D0 core, the E0 comes with several innovations.

- Reduced electrical consumption
- Compatibility with Execute Disable Bit
- Compatibility with Enhaced Halt State (C1E)

Reduced Electrical Consumption? Well I think you can deduce this one yourself.

The Execute Disable Bit (XD Bit), also known as NX Bit at AMD, is a function which dedicates a part of memory to contain data only. This avoids the use of this area by viruses and also buffer overflow type attacks. This function is limited to Socket 775 processors.

The NX Bit was already compatible with the AMD Athlon 64 and Opteron as well as the Intel Itanium and it requires the support of the OS to use this function. This is possible with Windows, since the release of the Service Pack 2, and the Linux 2.6.8 version.

Finally, the Enhaced Halt State, or C1E, reduces the processor’s electrical consumption when in full use.

The C(0)'s run very warm indeed. The D(0)'s run cooler and the E(0)'s have special instructions to deal with the heat issues far better than both C and D revisions. I would pay extra for the E(0) and would not even think of the C(0) revision.

R
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post #7 of 38
Quote:
Originally Posted by Ropey
The "E0" Stepping Revision will run the coolest and is the best overclocking of the group. Your Best Revisions are top - down.

R

I have the 3.0E on 90nm it was pretty cheap at Newegg--It clocks well and takes voltage well. I don't think you will get my results with stock cooling however.
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post #8 of 38
You can get a 2.4AE for $120~, buy a Zalman cooler for $50 . A 2.4AE can overclock to 4.15Ghz!
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post #9 of 38
Thread Starter 
That is some useful info! =D

Thank you so much! Heat indeed is an issue! One I would like to never have to deal with XD.



The Intel® website confused me about the HT in the first and second options. They are not listed in the main page (if you go to "Compare processors" page), but if you look them up, they say in the notes that they support HT. Should I believe the note, or the list which doesn't list them? (I personally feel like going for the notes. I checked the official thread of Processors' Specs. It doesn't include sSpec numbers, but it's promising still)...
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post #10 of 38
Note that the "E" does not designate the Stepping Revision E(0). Cyberdruids chip is an "E" with the stepping revision E(0). All these CPU's are HT enabled.

R
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