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Dual-core versus Quad-core

A

apisorder

n00b
Joined
Aug 27, 2016
Messages
22
I remember in some iterations of Windows one can disable multi core booting, and it led me to ask a rather unusual, probably dumb, question: why can't you buy an Intel Core i3/i5 processor and enable its Core i7 features?
I don't think it's the two-core versus quad-core difference, correct?
Even if they were hard wired, it is still the same chip, isn't it? So why can't we?
Thanks.
 
Because I came across this, "See the i5 and the i7 are the same chips. The i5 is the lower binned chip with 2 mb L3 cache disabled and hyperthreading disabled. "
But the i3 is a different chip. It is the same chip as the Pentiums and the Celeron. It is a higher binned chip which unlike Pentium has hyperthreading and unlike Celeron has 1 mb extra L3 cache.
 
Not exacting understanding what you talking about... they are not same chips at all. should read up some more on it. you can disabled i7's hyperthreading in the bios. But i5 does not have hyperthread built into it so you cant like just "enable" something that's not built in. i3 is a dual core cpu but does have hyperthread built in.

i3: dual core, hyperthread built in. Give 4 threads total
i5: quad core, no hyperthread built in. Also give 4 threads total but is better than i3 b/c th threads are all based on real cores
i7: quad core, hyperthread built in. Give 8 threads total.

You cant enable something that's not physically present or physically disabled inside the manufacturing process by intel.
 
But i5 does not have hyperthread built into it so you cant like just "enable" something that's not built in
Click to expand...

An i5 has hyperthreading however it is fused off so you can't reenable it. i5s and i7s are the same exact silicon. And so are the lga115X xeons.

i3s are a different chip. Probably used for the dual core mobile parts and the Pentiums.
 
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apisorder, that's a perfectly un-crommulent argument.
 
apisorder said:
I remember in some iterations of Windows one can disable multi core booting, and it led me to ask a rather unusual, probably dumb, question: why can't you buy an Intel Core i3/i5 processor and enable its Core i7 features?
I don't think it's the two-core versus quad-core difference, correct?
Even if they were hard wired, it is still the same chip, isn't it? So why can't we?
Thanks.
Click to expand...
You want to save money on High End Intel work Horse on the cheap.....That only us elites even know about? Ebay purchasing Xeon I7 equivalent server pulls at 1/5th of usual cost. The trick is getting a good deal on the motherboard...NOT the processor lol Beyond that OVERCLOCKING is the only free performance!
 
primetime said:
You want to save money on High End Intel work Horse on the cheap.....That only us elites even know about? Ebay purchasing Xeon I7 equivalent server pulls at 1/5th of usual cost. The trick is getting a good deal on the motherboard...NOT the processor lol Beyond that OVERCLOCKING is the only free performance!
Click to expand...

Overclocking isn't free. It increases electricity usage and heat output...........
 
ZodaEX said:
Overclocking isn't free. It increases electricity usage and heat output...........
Click to expand...

An destroys the integrity of your data. In other words, overclock only if your data is replaceable/worthless.
 
primetime said:
Pure and total horse shit! I think you forgot what website this is!
Click to expand...

Is it? I think anyone with knowledge knows that data integrity and overclocking doesn't go hand in hand.

Forgot the website? No I think H users knows that :)

Only a fool would think overclocking is a free lunch. Like anything else it involves trade offs. You balance the cons and pros and if you accept the cons you harvest the pros.
 
Shintai said:
Is it? I think anyone with knowledge knows that data integrity and overclocking doesn't go hand in hand.

Forgot the website? No I think H users knows that :)

Only a fool would think overclocking is a free lunch. Like anything else it involves trade offs. You balance the cons and pros and if you accept the cons you harvest the pros.
Click to expand...
The rest of us know your post is extremely ignorant lol...but your are right about one thing. IF YOU DON'T KNOW WHAT YOUR DOING ITS BEST NOT TO OVER CLOCK!:woot:
 
Shintai said:
An destroys the integrity of your data. In other words, overclock only if your data is replaceable/worthless.
Click to expand...

No. Only if you don't properly test the stability of your O/C. Some of us have been O/C'ing for decades.
 
Monkey God said:
No. Only if you don't properly test the stability of your O/C. Some of us have been O/C'ing for decades.
Click to expand...

And how would you test every single instruction for stability? Prime95 for example is just a handful of instructions. And how long would you test for?
 
You dont need to test every instruction.

But, you use lots of tools. Memtest before the OS is even installed. P95. Intel burn in. Every person has different amounts of time they use. I generally only use a few hour or test cycles and it works well for me and has for a long time.
 
Monkey God said:
You dont need to test every instruction.

But, you use lots of tools. Memtest before the OS is even installed. P95. Intel burn in. Every person has different amounts of time they use. I generally only use a few hour or test cycles and it works well for me and has for a long time.
Click to expand...

So you cant guarantee stability for every instruction that got different paths and registers or uses different execution ports.

Its just one of the trade offs you do with OC. Nothing wrong with that. Its still a good deal to trade 20% extra performance for perhaps a game crash every month or 2 months, hypothetically speaking.
 
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because its easier to throw something away. (disable a featuere) than to gain something out of thin air (enabled it) it all depends on how its disabled and if you can change it.

AMD had CPU's where could enable hidden cores.





feedback on the OC part. i have some pretty severe CPU heavy load on my PC it can be running for weeks none stop crunching out compression stuff
every iteration the data is verified by a CRC32 algorithm (its not perfect but its there). I've had had no issues running my computer stable and no data corruption. That a 5+ years machine.


I would much rather bet my data on an OC system that is tested properly. than an non-OC system that was just put together. Most OC issues is due to people not testing their system correctly
 
I had a 3930k overclocked to 4.4ghz for over 2 years without any issues with corruption.

Awesome cpu!
 
apisorder said:
question: why can't you buy an Intel Core i3/i5 processor and enable its Core i7 features?
Click to expand...

As other people pointed out, disabled cores are no longer the case with current CPU lines.

All i5s are i7s with Hyperthreading and some cache disabled. Both i5s and i7 desktop parts are quadcore.

All i3s are a separate chip design from current i5s and i7s.

i3s with less cache and hyperthreading disabled become Celerons.

There is no way to enable cores that don't exist on i3s.
 
Shintai said:
So you cant guarantee stability for every instruction that got different paths and registers or uses different execution ports.

Its just one of the trade offs you do with OC. Nothing wrong with that. Its still a good deal to trade 20% extra performance for perhaps a game crash every month or 2 months, hypothetically speaking.
Click to expand...
I get Maybe 1 crash ALL YEAR LONG my friend! lol like it said....you have to know what your doing lol Gods honest truth i really dont know for sure i even get the one yearly lol People that over clock way beyond extreme i cant speak for lol;)
 
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