CMX512-3200C2PT performance

[lycium]

Hi everyone :)

 

I've just bought two sticks of CMX512-3200C2PT Corsair XMS, with the intention of running it on an ASUS A8N-E and Athlon X2 4400+. I've heard that Corsair memory overclocks well, and to this end I went with the ~$300 worth of "gaming memory" (as my supplier listed it) rather than the Value Select. After scouring the IC list the closest match I could find for my memory (says 0537038-0 and is v5.2) is the following:

 

CMX512 3200C2PT 3202v5.2 0530088-0 = Promos -5 Rev A*

 

This is 7 weeks before my mem, so can I hope that my mem is revision A* and not A? Is there a noticable difference between the two?

 

The only info I was able to find on the net about these chips indicated (hardly a reputable source though) that other vendors use them in their value memory :/ Indeed I was somewhat disappointed when I read on the Corsair page that the mem runs at CAS 2.5 on AMD systems, 2.0 on Intels. I haven't opened the boxes yet (still waiting on the ASUS board) so if this is true and they don't overclock decently I'll probably be looking to sell them locally as they cost an absolute fortune here (don't get me started on the joys of living in a 3rd world country...) relative to other available value memory.

 

So basically I have three questions:

 

1. How far do these chips usually overclock? At CAS 2.5 there's not a lot of room for relaxing timings at higher clocks, and CAS 3 is kinda lacklustre for $300 worth of memory :/

 

2. Are they really CAS 2.5? I read elsewhere on this forum that I should set the CAS to 2 (link: http://www.houseofhelp.com/v3/showpost.php?p=227179&postcount=2)

 

3. Is the memory revision A* or A?

 

Thanks for your time, much appreciated! :)

 

Thomas

[Wired]

1. Completely depends on the IC. Post your full mem specs in the IC Inquiry Thread to get an official answer! Also, you will have to sacrifice timings for speed. The higher bandwidth usually more than makes up for the timing looseness.

 

2. They're CAS 2.0 on everything EXCEPT for AthlonXPs, ergo you should set yours like so:

 

CAS Latency (tCL): 2

RAS to CAS Delay (tRCD): 3

Row Precharge (tRP): 3

Active to Precharge Delay (tRAS): 6

 

Memory Voltage: 2.75 Volts

All other settings to defaults.

 

3. Gotta read the WHOLE thread. At the bottom it says:

 

* After the part # might suggest a miss match or error in that it may be a Promos or Mosel Vitelic IC

 

In otherwords, post your info in that thread to get a clear answer on your memory!

[lycium]

1. Completely depends on the IC. Post your full mem specs in the IC Inquiry Thread to get an official answer! Also, you will ahve to sacrifice timings for speed. The higher bandwidth usually more than makes up for the timing looseness.

 

I did mention the tradeoff between timings and bandwidth in my post; thanks for clarifying the cas2 issue.

 

3. Gotta read the WHOLE thread. At the bottom it says:

 

I did read the WHOLE thread :( Please don't assume I'm not thorough, genuinely looking hard for answers here. If there weren't a suggested missmatch or error I probably wouldn't be bothering you.

 

Of the 3 posts (2 + bump) that are relevant to my mem none are answered thus far :/ I also did mention all my memory info, lot number and all.

 

Besides working out which ICs are in the memory, I'm interested to get an idea of how far it'll overclock. Is 240 or 250 reasonable, assuming the board and CPU are capable? [edit: I'll ask this in the aforementioned thread]

 

Thanks again!

[lycium]

to somewhat answer my own question, i found this:

 

"Ok, unfortunately that revision uses Promos -5 Rev A chips. Not good. If you can get 210 out of these sticks, you should consider them good sticks considering the chips used in this revision." (from http://www.hardcoreware.net/forum/archive/index.php/t-24563.html)

 

the only thing "extreme" about a 5% overclock on this mem would be the 100% price premium :(

 

this especially makes me want to just break down and cry because of the dude hitting 250mhz+ with value select on these forums. yes i know he was very lucky (before i'm regarded as unobservant again), but then again, that luck seems to swing a lot harder the other way. calling something that performs 5% over spec extreme, at any price, is just not fair.

[Wired]

I stated you needed to read the whole thread because the asterisk (*) meant to read farther down, which is where I got that quote from.

 

As for the posters in that other forum, their statement is a guess at best. Base don what you quoted, they're making the assumption most make, that the revision explicitly tells you what IC the stick uses. This is false. This is why the part # / revision # / LOT # is needed for Ram Guy to look up what IC they use. Only he can give an official, concrete answer to IC Inquiries.

[RJLeong65]

Hi everyone :)

 

I've just bought two sticks of CMX512-3200C2PT Corsair XMS, with the intention of running it on an ASUS A8N-E and Athlon X2 4400+. I've heard that Corsair memory overclocks well, and to this end I went with the ~$300 worth of "gaming memory" (as my supplier listed it) rather than the Value Select. After scouring the IC list the closest match I could find for my memory (says 0537038-0 and is v5.2) is the following:

 

CMX512 3200C2PT 3202v5.2 0530088-0 = Promos -5 Rev A*

 

This is 7 weeks before my mem, so can I hope that my mem is revision A* and not A? Is there a noticable difference between the two?

 

As of now, your modules are in that database in the other thread:

 

CMX512-3200C2PT XMS3202 v5.2 0537038-0 = Promos -5 Rev A