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Modern memory controllers. Where'd FSB go?

post #1 of 14
Thread Starter 
I've been out of the loop for about 4 years, since that was the last time I needed to build a computer. Recently, I've gotten a request to build a new computer for a family member.

I was researching the "i" series of intel CPUs and looking at some overclocking guides (I did quite a bit of overclocking on older model CPUs) and I realized that FSB is apparently no more. At least, it's been replaces by something called DMI?

Anyway, my basic question is this: How do I know what DDR3 memory speed I want to buy myself for overclocking headroom and what numbers on the CPU am I looking for in relation to some sort of modern "FSB ceiling?"

For example on my Core 2 Duo e6600, it would be 2.4ghz 1066fsb stock, so if I wanted some overclocking headroom I'd buy DDR2 800mhz for a 1600FSB ceiling.
Edited by Fruban - 8/15/11 at 6:38pm
    
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post #2 of 14
Instead of FSB there is BCLK. Same idea.
post #3 of 14
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Quote:
Originally Posted by Angmaar View Post
Instead of FSB there is BCLK. Same idea.

I thought BCLK was the same as clock speed? I read that bus speed is pretty much stuck at 100mhz now and overclocking is mostly done with multipliers. Still, how do I know what speed of DDR 3 I'll want to provide overclocking headroom? I feel like I'm missing something...
    
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post #4 of 14
Read this first post and all included. It should clarify things for you!

http://www.overclock.net/intel-memor...e-h67-p67.html
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post #5 of 14
Quote:
Originally Posted by Fruban View Post
I thought BCLK was the same as clock speed? I read that bus speed is pretty much stuck at 100mhz now and overclocking is mostly done with multipliers. Still, how do I know what speed of DDR 3 I'll want to provide overclocking headroom? I feel like I'm missing something...
Sandybrige (p67 chips) are pretty much stuck at 100mhz bus speed, but first gen 1156 and 1366 "core i" are BCLK and you overclock that way as well as multi if you have an unlocked chip
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post #6 of 14
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Quote:
Originally Posted by Inteller View Post
Read this first post and all included. It should clarify things for you!

http://www.overclock.net/intel-memor...e-h67-p67.html
Excellent! Definitely helps me and answers my question well enough.

It's strange not knowing exactly how a RAM speed to CPU bus speed bottleneck might work with newer processors, but looking at those tests it doesn't look like it needs to be much of a consideration anymore. I'm just used to having this solid idea from the "old days" that if your cpu bus speed exceeds your memory bus, you have a bottleneck. If it matches or your memory bus is greater than your cpu bus, you don't have a bottleneck. Used to be so simple!

Thanks.
    
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post #7 of 14
Glad that helped!

Considering you skipped the 1st gen i7's and the socket 1366

These new Sandy Bridge builds are much easier to overclock, even on good air cooling!
You'll love it! It's an amazing chip!
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post #8 of 14
Thread Starter 
Quote:
Originally Posted by Inteller View Post
Glad that helped!

Considering you skipped the 1st gen i7's and the socket 1366

These new Sandy Bridge builds are much easier to overclock, even on good air cooling!
You'll love it! It's an amazing chip!
I wish I was building this for myself lol. However, I plan on using this build as a reference for myself once I finally have the means to get a new rig.

Been looking for a good P67 mobo for it, preferably on the cheaper side (under $150) but have been inclusive so far. Been looking at ones that have 1 PCIe x16, SATA 2.0, USB 3.0, and decent overclockability. Maybe I should start a new thread in the motherboard area.
    
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post #9 of 14
Thats a good idea! There may be a sticky at the top, referring to the better 1155 socket boards.
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post #10 of 14
Quote:
Originally Posted by Fruban View Post
I wish I was building this for myself lol. However, I plan on using this build as a reference for myself once I finally have the means to get a new rig.

Been looking for a good P67 mobo for it, preferably on the cheaper side (under $150) but have been inclusive so far. Been looking at ones that have 1 PCIe x16, SATA 2.0, USB 3.0, and decent overclockability. Maybe I should start a new thread in the motherboard area.
lol no need.....


Asus P8P67 Pro - The most popular mobo here on OCN.
Gigabyte P67 UD4 - ummmmmm meh. (nothing against gigabyte but not so familiar with them)
Asrock P67 Extreme4 - very good budget mobo matches the Asus in many ways.
Biostar TP67XE - Best bang for buck mobo for 1155.

Personally I have had good experience's with ASUS for a very long time, therefore I would say the Asus P8P67 PRo is the one, however, other mobo's at similar or lower prices are just as good. For example the best bang for buck is the BIOSTAR TP67XE, coming in at only $125. The next one seems to be the asrock P67 Extreme4, which without a doubt, has been absolutly amazing for some and I have heard nothing but good things about it, same with the Biostar.

I would recommend you to go with one that suits your needs best in term of features and past experiences. I personally would either go for the Asus P8P67 PRO or the Asrock P67 Extreme4.

Just a note, any mid range mobo with 8+2 and above, power phase would do. The overclocking capability is mostly down to the CPU.

Hope that helps
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