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Up Topic Rybka Support & Discussion / Rybka Discussion / Which processor to buy i5-520m or i7-720m
- - By Eli1 (*) Date 2010-07-18 12:55
Does the i7 much better than the i5?
Parent - - By mocha1961 (***) [us] Date 2010-07-18 13:39
yes
Parent - By Eli1 (*) Date 2010-07-18 16:16
How do you know?
the i7 has 6 cache and the i5 has only 3 cache does it matter?
Parent - - By Lukas Cimiotti (Bronze) [de] Date 2010-07-18 16:28
i5-520M has 2 cores 2.4 GHz
i7-720QM has 4 cores 1.6 GHz
i7-720QM is slightly better for chess than i5-520M but consumes more energy.
Parent - - By Eli1 (*) Date 2010-07-18 17:35
Thank you for your answer
I still need to know how much significant the number of the cache of the processor  between 3,6 and 8
Parent - - By Lukas Cimiotti (Bronze) [de] Date 2010-07-18 17:54
It is relatively insignificant - forget about it.
Parent - - By Eli1 (*) Date 2010-07-18 20:12
Thank you again for your answer
Do you know if the speed of the ram is significant:
Ddr 3 1333mhz vs ddr3 2000mhz
Parent - - By Erudito (**) [ca] Date 2010-07-18 20:45 Edited 2010-07-18 20:51
Of course speed is significant... However, the best answer is "what is your budget?"
That is the limiting factor... if money is not an issue... go with the best and highest speed... as long as you can afford it !!!
Therefore, ask yourself: "What is your budget?"
This is the limiting factor and it will be your ultimate decision what to get in the end...
Sure, the difference/gain between these 2 RAM maybe 5% to 10% gain... therefore, the next question is what is your purpose of building this system?
If it is for long analysis, say overnight analysis ... then the 5%-10% gain is insignificant... only the price of the cost of buying the hardware...
Parent - - By Fulcrum2000 (****) [nl] Date 2010-07-18 20:55

> Sure, the difference/gain between these 2 RAM maybe 5% to 10% gain...


Only if he will overclock his system. If not, both will run at the same speed. So they main question is, will you overclock?.
Parent - - By Eli1 (*) Date 2010-07-19 07:12
Yes i will overclock
But what is the connection between overclocking to speed of the ram?
Parent - By Fulcrum2000 (****) [nl] Date 2010-07-19 07:50
A non overclocked system will always use the same default RAM speed, putting faster RAM in the system will not make any difference as it will still run on the lower (default) speed. You have to manually up the QPI (baseclock) to make use of the faster RAM.
Parent - By Lukas Cimiotti (Bronze) [de] Date 2010-07-19 10:05
The processors mentioned are notebook CPUs. You can't overclock notebooks in a reasonable way.
Up Topic Rybka Support & Discussion / Rybka Discussion / Which processor to buy i5-520m or i7-720m

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