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Topic Title: Memory and OC Questions
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Created On: 07/06/2004 12:25 AM
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 07/06/2004 12:25 AM
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gerardkelley
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Posts: 15
Joined: 06/19/2004

I've got a Tbred 2100+ B (unlocked). Wouldn't work with KT133 chipset. Got a Epox 8K582+ mobo with KT333 chipset. Should work. Want to overclock. Now I need memory. Chipset supports DDR2700. Can I use a faster memory? Should I? I'm thinking the price isn't much more and the future might hold a faster chipset. I read that I probably should just use 2 sticks instead of 3. Maybe a matched pair. Is registered memory something to consider. Any thoughts on the mobo ($20)? Any advice will help.
 07/06/2004 01:38 AM
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-Milt-
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Joined: 03/15/2004

Gerard,

At $20, the mobo was a good deal.
(I'll assume that what you meant was an Epox EP-8K5A2+ )

Since all memory is 'backward compatible' I would suggest that you spend a few extra $ now and buy the faster PC3200 ( which can run at 100 MHz, 133 MHz, 166 MHz, or it's rated 200 MHz), knowing that it will be 'good-to-go' on your next mobo upgrade.
Or, even better would be PC3500... and it's not that much more expensive.
You will also realize an immediate benefit with the faster memory now, because you will be able to run it in your current system with very 'aggressive' memory timings.

The chart below is regards DDR memory, and its new 'rating' system.
This little chart compares the new 'PC rating' system, to the 'DDR rating', to the actual 'Maximum MHz' that the memory is 'rated' to run at....
But the same 133 MHz = 266 DDR appies to CPUs, and mobos, as well.

PC# vs. = DDR# vs. = MHz

PC1600 = DDR200 = 100Mhz
PC2100 = DDR266 = 133Mhz
PC2700 = DDR333 = 166Mhz
PC3200 = DDR400 = 200Mhz
PC3500 = DDR433 = 216Mhz
PC3600 = DDR450 = 225Mhz
PC3700 = DDR466 = 233Mhz
PC4000 = DDR500 = 250Mhz
PC4200 = DDR533 = 266Mhz
PC4400 = DDR550 = 275Mhz
PC4500 = DDR566 = 283Mhz

Note that the 'DDR rating' is always exactly double the 'actual speed in MHz' that it was designed to run at.
DDR (or Double Data Rate) memory is also SDRAM memory, but it is able to read info or 'data' on BOTH the rising and falling edge of a pulse...
Hence the name 'Double Data Rate' (or DDR for short)...
SDRAM can only read it on one edge.
But, DDR266 is still only running at an actual 133 MHz

The same thing applies to processors, and mobos, that are rated as 166/333 (or, to use the Marketing boys description, as a '333 CPU'... a '333' processor is running at 166 MHz. Period.
You will never find a setting in your CMOS Setup that allows you to set it to '333'...
and that's because it ACTUALLY RUNS AT 166 MHz

I know that it's confusing, and it certainly was to me at first, but I DO HOPE this helps, and that it was of some use.

-------------------------
Here is my new PCChips M848A' ">http://img.photobucket.com/alb...2_T-2-3-3-6-2_M848.jpg v2.1, with a 1700+ @ 2411 MHz, and my trusty old PCChips M810L' ">http://members.lycos.co.uk/mmm...00MHz_Sandra_tests.jpg v7.1A, with a Barton 2500+ @ over 3500+. Some of my fancy cars are on this pag
 07/06/2004 02:01 AM
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gerardkelley
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Thanks Milt
I had a pretty good idea about the speed of the memory. I'm glad to hear that it's backward compatible. I will go for the faster memory. What have you heard about using no more than 4 banks (2 sticks) of memory. Maybe even 1 piece. Corsair says that 1@512 is faster than 2@256. And what about registered memory. I guess there is less of a load on the CPU or north-bridge, but I don't know if it makes much of a difference. I'm hoping to get the 2100+ to 3 ghz Ha Ha
 07/06/2004 02:38 AM
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-Milt-
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Joined: 03/15/2004

Gerard,

I'd suggest a single stick of PC3500, say 512Meg, and then if you should upgrade to an nForce2 mobo at some later date, you can add a second stick of 512Meg (to take advantage of the nForce's Dual Memory Architechure).
Corsair knows a lot more about memory than I do, so if they say a single 512 is faster, I'll believe them!
I don't think you want registered memory, but check for recomendations for your mobo at the mfgs site.

A quick check on http://www.cpudatabase.com/CPUdb/' ">http://www.cpudatabase.com/CPUdb/ tells me that 3 gig might be shooting a little high.
A couple of guys got their XP 2100 T-bred 'B' up above 2900 MHz, but no 3 gig results... maybe you'll be the first!

-------------------------
Here is my new PCChips M848A' ">http://img.photobucket.com/alb...2_T-2-3-3-6-2_M848.jpg v2.1, with a 1700+ @ 2411 MHz, and my trusty old PCChips M810L' ">http://members.lycos.co.uk/mmm...00MHz_Sandra_tests.jpg v7.1A, with a Barton 2500+ @ over 3500+. Some of my fancy cars are on this pag
 07/06/2004 03:39 AM
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gerardkelley
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Golly, I was joking about getting that speed, but I guess I'm not that far off. I can't believe what that CPU can do. The memory advice is real good and I'll take it. The board is on it's way to me and the memory is at Frys. Maybe this weekend I'll have something going. Still have a lot to learn, but the board is in a lot of the specs on that link so I can work something out. I really would be happy to get 2300 mhz, but I might catch the OC bug and go crazy. Later
 07/06/2004 06:48 PM
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-Milt-
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Joined: 03/15/2004

Gerard,

Good memory is critical in overclocking, but so is good cooling.
So, while you have the HS/F out, why don't you 'lap' it?
'lapping' is something you do to make a surface (your HeatSink in this case) perfectly flat and smooth.

Pull the HS/F from yours and just 'lap' what you already own... it's good for at least a 3 ~ 5°C drop in CPU temp at full-tilt-boogie.

You will need a perfectly flat surface (any pane of glass is excellent for this), about 8" x 10", and 1 sheet each of black water-paper in 400 grit, 800, 1000 or 1200, and 2000 grit, ( you can find it that fine at any 'Automotive Paint Supplies' store )

Start with the coarsest, (soak it in water first, and add a drop of liquid dish detergent to the water on the paper before you start to 'lap' the HS, in a figure-8 pattern), then finer and finer until you can literally 'see yourself' in it. (a true 'mirror finish'
This 'lapping' process is worth doing on virtually ANY HS/F, but particularly on the cheaper ones, that have a visibly rough surface.
If you can see any lines at ALL with the naked eye, then it's too rough for optimum heat transfer.

Have fun, and let me know when you're up and running on the 'new' (used?) board

-------------------------
Here is my new PCChips M848A' ">http://img.photobucket.com/alb...2_T-2-3-3-6-2_M848.jpg v2.1, with a 1700+ @ 2411 MHz, and my trusty old PCChips M810L' ">http://members.lycos.co.uk/mmm...00MHz_Sandra_tests.jpg v7.1A, with a Barton 2500+ @ over 3500+. Some of my fancy cars are on this pag
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