A few technical question

Build it Myself

Senior member
Oct 24, 2007
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Ok, well I've spent the day learning everything I can about what BIOS is, how to flash it, how to modify it, etc. I've also spend the day learning the in's and out's of overclocking, which I think at this point I have the hang of it and I'm writing my own comprehensive guide which compiles 12 that I've found on the internet (including the one here), but I still have a few questions I'm not sure about and I know someone could help.

1. Where can I find out what the RAM timing's mean? I seem to understand that more aggressive means lower #'s, but exactly what does that mean "more aggressive"? Does it mean unstable, faster? Does it change the speed at all or the voltage? I can't seem to find info on this and every time I see a link it seems to be dead. So help would be appreciated.

-On the note of RAM and leading to my next question, now that I've learned this stuff I feel kind of stupid for jumping at the HP RAM deal that was out: http://www.costcentral.com/pro...ail/HP/PX976AT/L49299/ It was a great deal and I'm not complaining because I just can't beat that, but now after learning what I have I want to know something.

2. 1.8Volts is the MAX that RAM can run at or the standard that it's equipped to run at? I remember reading that all RAM had to be certified @ 1.8V but I don't know if it can go over. When you overclock you generally need to increase the voltage in the RAM as well (overclocking RAM) as I understand it...am I right? If so does anyone know how high this RAM can be clocked to? I've been going over mathmatical formulas that depict how to regulate clock speed and what have you (Mem speed = CPU speed/mem. divider) which @ 1:1 would imply that with a CPU speed in excess of 333 this RAM couldn't hold up, right?

-That last one is really what's getting me because I just read a thread over @ Tom's that explained the OC'ing ability of the 2180 and I couldn't believe it could outperform the 6750 that I planned on getting. Well, not really outperformed in a sense but @ 3.2 with air and no really technical issues, that seems incredible @ that price. So I think I'm gonna go with that chip so I can learn to OC without being scared of breaking my budget (blow 1 up and buy another = same price as the 6750 anyway only now I get to practice!!)

In a nutshell i'd love to have someone that I could talk to that perhaps could better explain some of these formulas that I've got because I get 99% of what's going on, but the variables like how to determine RAM capabilities leave me curious as to what I should be doing here; buying a 2180 and OC'ing the hell out of it, or a 6750 and being mild (which doesn't really suit my personality).

3. Last thing, I'm curious if there's a place I can find out how high the multipliers for the Intel chips are. I know most of them are locked limit but I don't know how high that limit is. Assuming for example I have a 6750 @ 2.66. That means 8x333FSB right? Well not really FSB, but Clock speed...anyway, so this means it's running about 2.66 right? that means my 667 HP memory is maxed out so I can either A) raise the voltage on the RAM and hope to increase clock speed right? or B) Increase the multiplier and maintain and/or lower the clock speed yielding a higher Max CPU speed, right? With a higher multiplier you don't get the benefit of a higher FSB speed though, right? Which in that 2180 could be a problem...you only get that if you raise clock speed, correct? In which case am I better giving my bro the HP and getting a few 800 sticks instead?



Tell me how close I am!!! LOL, like I said I started this stuff this afternoon and I love math so this has totally consumed my day! Even my wife got mad! Any info would be greatly appreciated.
 

Build it Myself

Senior member
Oct 24, 2007
333
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Rbk123
E2140 @3.2Ghz
375x8
1.425V
Abit IP35-E
2GB of the $15 Cheap HP ram @ 5-5-5-15 and 2.0V
Zalman 9500

I read this in the 2xxx OC thread...I'm assuming that the 2160 could perform the same? If that's the case then my RAM voltage question can be disregarded as he's posted a 2.0V setting; I now need to know what those timings mean...
 

itakey

Senior member
Sep 9, 2005
537
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I just got the E2160 and am planning on overclocking it. I am new to Intel overclocking so I am waiting for some feedback on the boards. I would definitely recommend the E2140/2160/2180 since a lot of people have success with them.

I'm not sure about the technical data on RAM and voltage, but yes, you usually have to up it a little higher to keep it running, and same with the CPU. More power=More needed voltage, not directly, but in many ways.
 

SerpentRoyal

Banned
May 20, 2007
3,517
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1.8V is the JEDEC standard for DDR2 667. After CMOS clear, the motherboard will automatically boot at 1.8Vdimm. RAM can run at this voltage up to about 340MHz FSB. So if you have a 10x multiplier CPU, then 340 x 10 or 3400MHz core speed. Note that you can add more RAM voltage to achieve higher RAM speed. 2.0Vdimm will provide at least 400MHz at 5-5-5-15-2T timing (equivalent to DDR2 800). If you have an 8x mulplier CPU, then 400MHz RAM speed will translate to 3200MHz CPU core speed with 1:1 memory divider (400 x 8).
 

Build it Myself

Senior member
Oct 24, 2007
333
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can this CPU (2160) run @ 340 x 10 with the HP RAM and still be stable? 3.0 is my goal so anything above that is gravy, so I've been hoping to hit the 3.1/3.2 mark without too much heat or trouble. I'd like to know where I could find some information on what those RAM speeds translate to as far as gains or what they even mean (then I could figure it out myself).

I just read on another thread about running a 4xxx series @ an 11 multiplier. Again, is there somewhere I can find out the multipliers for these chips? A link perhaps? Also a link for RAM timings?

There's a thread on OC'ing these, but there's not much about heat or the process involved, just the final results. Is there a review (like Tom's or anandtech round-up) that I've overlooked regarding these comparisons? I'd appreciate it.
 

jjmIII

Diamond Member
Mar 13, 2001
8,399
1
81
The 2160 is a 9x multipler with a 200x4=800 bus.

OK.....9x333 (your stock ram speed) is a very nice OC = 3Ghz.

If you run the ram at 400 and 2.0v (which is NO problem) you will get....9x400 = 3.6Ghz.

I'm guessing the 2160 won't go quite that far, so set at 1:1 and 2.0v your ram should be fine to as far as that cpu will take you.

 

Build it Myself

Senior member
Oct 24, 2007
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So if that is the case jjmIII, then a 9 x 333 multiplier will also yield a 1333FSB right? Which essentially would put it right next to a 6850 series, correct?

Anyone have a link to a RAM timings explanation website?
 

myocardia

Diamond Member
Jun 21, 2003
9,291
30
91
Originally posted by: Build it Myself
So if that is the case jjmIII, then a 9 x 333 multiplier will also yield a 1333FSB right? Which essentially would put it right next to a 6850 series, correct?

Yes, it would be at exactly the same speed in Mhz as a 6850, but nowhere near the same performance level as a 6850. See, the E4x00 series has half the L2 cache as the E6x00's and E6x50's, yet it requires a 150-200 Mhz higher overclock, to be competitive performance-wise with the E6x00 series. That means that an E2x00 series chip would have to be at least 300 Mhz higher, and up to 400 Mhz higher than an E6x00 chip, and that's only if the lack of cache scales as well for the E2000's, as it does for the E4000's.
 

Build it Myself

Senior member
Oct 24, 2007
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Then that's going to lead me to my next question...where can I find a guide on L2 cache explanations or benchmarks?
 

stingygrrl

Golden Member
Jul 30, 2000
1,829
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Originally posted by: jjmIII
The 2160 is a 9x multipler with a 200x4=800 bus.

OK.....9x333 (your stock ram speed) is a very nice OC = 3Ghz.

If you run the ram at 400 and 2.0v (which is NO problem) you will get....9x400 = 3.6Ghz.

I'm guessing the 2160 won't go quite that far, so set at 1:1 and 2.0v your ram should be fine to as far as that cpu will take you.

I'm ki9nda re-learning this too.
So for this setup:

Gigabyte GA-p35-DS3L
2160
$10 HP 667 RAM (2 GB)
Antec earthwatts 430

is this what I need to do?
set PCI-E to 100
set RAM to 1:1
set RAM to 2.0
set CPU FSB to 333?

I don't want to corrupt data on the HD. Is there any other setting I need to make certain that ratio (or divider) is set right?

Then tweak from there (or not preferably)?


My goal is not the highest OC and days and days of stability tests, but a STABLE system and OC to get the higher performance and less $.

Thanks
 

myocardia

Diamond Member
Jun 21, 2003
9,291
30
91
Originally posted by: stingygrrl
is this what I need to do?

set RAM to 1:1
set RAM to 2.0

Those are the same, depending on which motherboard you buy.

set CPU FSB to 333?

If you're wanting to run @ 2.66 Ghz, that's how you do it, although you might also need to turn off the energy saving features (EIST & C1E).
 

jjmIII

Diamond Member
Mar 13, 2001
8,399
1
81
is this what I need to do?
set PCI-E to 100
set RAM to 1:1
set RAM to 2.0 V
set CPU FSB to 333?

Looks good . And yes, 9x3333 = 2997 or 3Ghz

I think 333 is a nice easy OC for the e21X0 line. If your lucky you get a nice even 400 for a 100% OC.

EDIT: If your running 333, then 1:1 will put your DDR @ 667 (default), therefore you can run the DDR at default 1.8V.
 

stingygrrl

Golden Member
Jul 30, 2000
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great, I'm getting the last piece today I hope and hope to have it up and running this evening
 
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