Crucial PC2700 Overclocks!!

[Assimilator1]

Originally posted by: Budman

Originally posted by: shady06
get 3200

Get the 3200, the most I was able to get out of my Crucial pc2700 is 180mhz.

Virtually the same here ,my PC2700 Crucial tops out at 181MHz ,CAS 2.5-2-2-6 (tried higher voltage but it didn't help)

Nohr
How the heck did you manage that!:Q

<<is jealous!

 

[infinite012]

Originally posted by: Paveslave

Originally posted by: JimRaynor
how are you running at 290mhz with crucial pc2700?? sounds like you are at 145mhz. 145 quad-pumped = 580mhzbus. the ram may be operating at ddr 290 but it's not at 290mhz i believe.

and to the other guy no I don't think you are gonna be getting anywhere near 195-200ish with 2700. That's what pc3200 is for.

My Motherboard supports PC2100 which is 266mhz data rate to which I have it overclocked to 290 mhz data rate. Now you're saying that 290 is not mhz which I think is a right and a wrong statement. To my understanding my RAMs core clock is 167(mhz) by itself which it is also DDR Ram so that means when it is run with two sticks the data rate is doubled up to 333(mhz), hence the term 333(mhz) Double Data Rate! Yes, my FSB is at 145 which is where I get the 290(mhz) DDR. I think he said he was going to use two sticks of 512mb which gave me the impression that he was going to take advantage of the DDR.
Like I said, I misread it to begin with so that's why I was confused. I do have to stick with my original statement though of my RAM being run at 290 (mhz).

See here if you need more info:
Crucial PC2700 RAM

Not to be mean or anything, but I think you're wrong. Unless you were saying that using two sticks of RAM to get Dual Channel DDR, then whatever, but you said you run two sticks to get Double Data Rate...

DDR = in ONE stick. The RAM works on the rising and falling edges. You're saying it works on the rising on one, and the falling on the other?

People sell DDR RAM as PCXX00 and they sell them in quantities of one, two, or four. Dunno why that would help you though.

 

[Nohr]

Originally posted by: Assimilator1

Originally posted by: Budman
Get the 3200, the most I was able to get out of my Crucial pc2700 is 180mhz.

Virtually the same here ,my PC2700 Crucial tops out at 181MHz ,CAS 2.5-2-2-6 (tried higher voltage but it didn't help)

Nohr
How the heck did you manage that!:Q

<<is jealous!

I gotz mad overclockin skillz phoo.

Just got lucky I guess. Timings are CAS 2.5 3-3-7 at 2.8V running on an Asus A7N8X Deluxe R1.04. You probably need to back off on your timings a tad.
I can break 200MHz at CAS3 with slower timings.

 

[Assimilator1]

Right I see how you do it now,hmmm don't know if its worth doing that ,might actually end up with the memory performing worse! ,guess there's only 1 way to find out!

 

[Nohr]

We can compare memory benchmarks if you like.

 

[Noid]

I have Crucial 2700 running 190 (380 DDR) in my KX7-333

with Cas 2.5 3 6 3 3 1T and 4 bank interleave at 2.8v

dunno how far it will go for sure ... but i know it wont do 200

I feel fortunate that it runs 190 stable

 

[Assimilator1]

Originally posted by: Nohr
We can compare memory benchmarks if you like.

ok ,SiSoft Sandra? ,what version have you got?

 

[Acanthus]

Originally posted by: lordtyranus2
I was able to get PC2700 to 3200 speeds with CAS 3 stably.

even kingston valueram will do this, im running kingston valueram 2700 at 215 fsb 1:1 now.

 

[Nohr]

Originally posted by: Assimilator1

Originally posted by: Nohr
We can compare memory benchmarks if you like.

ok ,SiSoft Sandra? ,what version have you got?

2004 Standard, Memory Benchmark @ 195MHz:
Int 2879
Float 2698

 

[merlocka]

I'm running a gig of crucial 2700 dual channel @ 200MHz in my 8RDA+ with a Barton 2500. Has proved quite stable so far.

My SiSoft memory scores at 11x200 2.5/3/3/7 I get 2834FP 2628INT.

I'm running version 2003.3.9.44

 

[Paveslave]

I'm running 2048 mb of Crucila PC2700 (333) @ 146mhz (290) with a Gigabyte 8INXP (Intel E7205) mobo with a P4 2.8 533FSB @3.06 584FSB

SiSoft 2004:
Int: 3463 mb/s
Float: 3467 mb/s

 

[Assimilator1]

Your sig is wrong,your memory is running at 146MHz not 290

 

[Paveslave]

Originally posted by: Assimilator1
Your sig is wrong,your memory is running at 146MHz not 290

Geez people, get over it. I know it's core clock is 146 but in ddr it is 290. PC2700 RAM is also known as 333Mhz DDR Ram. Get over yourselves will ya. Another reason, when my computer boots up it clearly shows that my memory is running @ 290 mhz in dual channel. Go read up on DDR and then get back with me.

 

[Assimilator1]

I know what DDR is about already

When talking about FSB ,we usually talk about the real clock speed ,not whatever its 'pumped' upto.Its the fault of the memory makers that we have all these different standards!

Btw I run my DDR in dual channel mode ,suppose I should say its running at 708MHz! totally confusing
177MHz FSB x2 for dual channel,x2 for DDR

Anyway ,it doesn't really matter ,you can keep your sig wrong if you want


Nohr
Not done the tests yet

 

[Paveslave]

Originally posted by: Assimilator1
I know what DDR is about already

When talking about FSB ,we usually talk about the real clock speed ,not whatever its 'pumped' upto.Its the fault of the memory makers that we have all these different standards!

Btw I run my DDR in dual channel mode ,suppose I should say its running at 708MHz! totally confusing
177MHz FSB x2 for dual channel,x2 for DDR

Anyway ,it doesn't really matter ,you can keep your sig wrong if you want

Sure, I could "dumb down" my standard for ya so it's not so confusing. I just hate it too when DDr Ram is rated at its DDr speed as well. Manufacturers should stop referring it as DDr 266, DDr 333, and so on. They should dumb down their standard as well, as to not "confuse you".

Consider this "cunfusing" problem handled, I changed my Sig so it wouldn't be so confusing. Problem solved!

 

[Assimilator1]

I was talking about FSB is usually quoted in 'real' MHz ,not RAM ,anyway I'm getting bored of this as I'm sure others are too.

BTT

 

[Nohr]

Originally posted by: Assimilator1
Nohr
Not done the tests yet

Hurry up already, it takes all of a half minute tops!

 

[Johnbear007]

get 3200

 

[jiffylube1024]

Originally posted by: Paveslave

Sure, I could "dumb down" my standard for ya so it's not so confusing. I just hate it too when DDr Ram is rated at its DDr speed as well. Manufacturers should stop referring it as DDr 266, DDr 333, and so on. They should dumb down their standard as well, as to not "confuse you".

Consider this "cunfusing" problem handled, I changed my Sig so it wouldn't be so confusing. Problem solved!

No, you're still misinterpreting the way to use DDR nomenclature.

DDR memory is rated on a scale based on an extension of SDRAM. DDR333 runs at 166 MHz double pumped. This makes it effectively 333MHz.

You are running dual-channel DDR memory, underclocked DDR333. Your memory is at 145 MHz, "DDR290" .

Having two sticks of memory doesn't "technically" mean you are running 290MHz (although effectively this is exactly what it is like). To stick with the proper terminology here in the forums (and elsewhere) just say you are running DDR at 145MHz, dual channel. Not 290 MHz, which is confusing and misleading (290MHz sounds like you got a killer DDR overclock or something).

 

[ZoNtO]

Now now children, please stop bickering! Sometimes it's ok! Some people like to say memory configs different ways. I prefer the unaltered FSB, in which case my CPU is running 133 and my ram 166 right now. But in the end, its really not FSB that matters, it's the warm fuzzy feelings in our hearts which personal computing gives to every worthy user. Can't we all focus on that instead of the relatively insignificant matter of who's ram and/or CPU is clocked faster? Thank you and good night.

BTW: I'm not buying Crucial PC2700 anymore.

Grazi

 

[Assimilator1]

Why not?

Nohr
Finally got around to updating SSS to v 2004.10.9.89 ,with

177MHz FSB/RAM ,RAM @ CAS 2.5-2-2-6 dual channel I get

Int 2714 MB/s
Float 2569 MB/s

Gonna play around with timings & speed in a min to see if I can get better results

ok ,I played around with various FSB speeds,RAM timings & RAM/AGP voltages.
I didn't exceed 2.7v for vdimm & 1.6v for AGP (didnt want to).

Couldn't get it run at all above 188MHz ,even with CAS 2.5-3-3-7 ,2.7v & 1.6v.
At 186-188MHz regardless of voltages I could get it to run but I kept getting the screen flicker(reset) as if I were changing resolution,most of the time it recovered but occasionally it locked & often a few graphics would get corrupted.I tried to stabalise it at 186MHz changing various settings but it wouldn't have it.On my last attempt I did a P95 torture test & surfed the forums after about 10mins the screen reset ,shortly after it kept reseting every 10secs or so (along with a BIOS beep) & it locked:frown:.At this point I'd had enough & set it back to 177MHz.
Anyway I managed some benchmarks

188 MHz CAS 2.5-3-3-6
Int 2849 MB/s
Float 2651 MB/s

188 MHz CAS 2.5-3-3-7
Int 2860
Float 2662
(both about 6% faster than my 177MHz setting)

187 MHz CAS 2.5-3-3-6
Int 2829
Float 2640
(virtually the same figures at 2.5-2-3-6)

185 MHz CAS 2.5-3-3-6
Int 2806
Float 2611

At a latter point I'll see if I can get 185MHz stable.But at just over a 4% improvement in the SSS benchmark over the 177MHz setting I don't know if its really worth it?

 

[skyking]

I have heard scores all over the board with crucial 2700. you could get a bum set of sticks that will only do 180 or so with tight timings( which is not a defect; it is rated at 166), so unless you want to screw around with the luck of the draw, get some good 3200 right from the start. Run it tight and enjoy good performance at stock voltage, etc!!!!!

 

[Assimilator1]

get some good 3200 right from the start.

Yeah I would of done it but it was stupid money when I bought this mbrd etc back Feb/March

I might sell off my PC2700 & get PC3200 crucial when I have some £££s

 

[Kroffty]

2700 overclocking

 

[Assimilator1]

Thanks for the link ,seems he had better luck than me on overclocking these Crucial modules