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Corsair XMS rant


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I used to think the Corsair XMS series ram was the best thing on earth with the incredible 2,2,2,5 timings, and the capability to hit around 250 fsb with just a few timing and voltage adjustments. But, after a couple of computer builds with the new rev.E cpus, I am wondering why to god I bought this ram.


1st rev.E PC =


Athlon 64 3700+ San Diego

Corsair TWINX1024-3200XLPT rev1.2 ($200 at time of purchase)


EVGA 6800gt



Bios 510T1 (official Beta)


FSB Bus Frequency - 245

LDT/FSB Frequency Ration - Auto

CPU/FSB Frequency Ratio - Auto

PCI eXpress Frequency - 100Mhz


CPU VID StartUp Value - StartUp


CPU VID Control - 1.550v

CPU VID Special Control - 104%

LDT Voltage Control - 1.20v

Chip Set Voltage Control - 1.50v

DRAM Voltage Control - 3.10v



DRAM Frequency Set - 200 (DRAM/FSB:1/01)

CAS Latency Control (Tcl) - 2.0

RAS# to CAS# delay (Trcd) - 03 Bus Clocks

Min RAS# active time (Tras) - 05 Bus Clocks

Row precharge time (Trp) - 03 Bus Clocks

Row Cycle time (Trc) - 09 Bus Clocks

Row refresh cyc time (Trfc) - 14 Bus Clocks

Row to Row delay (Trrd) - 03 Bus Clocks

Write recovery time (Twr) - 02 Bus Clocks

Write to Read delay (Twtr) - 02 Bus Clocks

Read to Write delay (Trwt) - 02 Bus Clocks

Refresh Period (Tref) - auto

Write CAS Latency (Twcl) - Auto

DRAM Bank Interleave - Enabled




DQS Skew Control - Auto

DQS Skew Value - 0

DRAM Drive Strength - Level 7

DRAM Data Drive Strength - Level 2

Max Async Latency - fast

Read Preamble Time - Auto

IdleCycle Limit - 256 Cycles

Dynamic Counter - enable

R/W Queue Bypass - 16 x

Bypass Max - 07 x

32 Byte Granularity - Disable(8 Bursts


These are the tightest timings I was able to achieve at 240fsb (100% stable), and amazingly enough, seems to be stable up to 250fsb with almost no changes in settings.


My rant, is that with much cheaper ram, specifically OCZ4001024ELDCGEVX-K

(currently $147 on Newegg) I was able to achieve much tighter settings at the same fsb (245@2,2,2,5,T1 3.4v). I basically stole(sorry) loc.o (#14) settings from the Overclocking Database and just changed the ram voltage to 3.4 and fsb to 245.


Is there anything special about the XMS that makes it better then the others, even at looser timings ?

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corsair for me is just nothing of what they said they are, too much of a company name I guess, I had before the Corsair XMS 3200C2PT they were bh5/utt chips, they couldn't even run at 1T I had to run them at 2T even test it in other computers and nothing work, and what is werid is that now I am running value corsair ram with heatspreaders I can even run them at 220mhz 1:1 at 1T so I am like what the hell is this :S?

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I've got a pair of Twinx 3200c2 utt and so far it runs quite well.


Currently Im runnin 300x9 and using the 150 divider making the ram 225mhz. Timings are 2-2-2-8 1T @ 3v.


The sticks started off pretty bad, but after some messing around they perform really well.

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