Overclocking Corsair CMX512-4000Pro DDR
 To meet the demands of faster and faster DDR, PCStats has recently moved
to a new AMD test motherboard. Where we used to test memory with the Epox 8RGA+, we are now
using the Albatron's KX18D Pro II as it is able to reach the higher numbers
with greater ease.
Anyway we plugged the Corsair CMX512-4000Pro memory in, and as
with the older CMX512-4000 modules we were only able to run the memory with aggressive
timings of 2-3-3-6.
Starting at 200 MHz we began
to raise the FSB slowly. At 213 MHz we ran into a few stability problems
and raised the memory voltage to 2.8V solve them (remember 2.75V is the default voltage
for this memory).
At
220 MHz we again ran into a few more problems but going to 2.9V solved things.
With the AMD test system we were able to hit a maximum speed of 225 MHz FSB
while maintaining 2-3-3-6 timings which is not that bad, but far from the memory's 250
MHz rating (at 3-4-4-8). Loosening the timings to 3-4-4-8 didn't help us overclock
any higher curiously.
We had some high
hopes with the memory for our Intel test system. Unfortunately no matter what I tried
I could only get the memory to function properly at 3-4-4-8 with PAT enabled
on an Abit IS7 motherboard. It was no surprise that the Corsair CMX512-4000Pro memory ran at 250MHz
flawlessly. Increasing the speed in nice even 2 MHz intervals, the memory topped out at a maximum of 260 MHz on the Intel test
system.
| pcstats
test system #1 specs: |
|
|
computer hardware:
|
|
| processor: |
athlonxp 3200+ |
| clock speed:
|
11 x 200 mhz = 2.2 ghz
10 x 225 mhz = 2.25 ghz |
| motherboards: |
albatron kx18d pro ii |
| chipsets: |
nforce2 ultra 400 |
| videocard: |
ati radeon 9800 pro (325/620) |
| memory: |
2x 512b corsair twinx1024-4000pro* |
| hard drive:
|
40gb wd special ed. |
| cdrom: |
nec 52x cd-rom |
| floppy: |
panasonic 1.44mb floppy drive |
| heatsink: |
thermalright sk6 w/36cfm delta |
| powersupply: |
vantec 470w stealth psu |
| software
setup |
windowsxp build 2600
nforce2 2.03
catalyst 3.5 |
| benchmarks |
sisoft sandra 2003
pcmark2002
3dmark2001se
quake iii
arena
ut2003 |
* - memory was running with 2-3-3-6 timings for all
benchmarks!
| pcstats
test system #2 specs: |
|
|
computer hardware:
|
|
| processor: |
pentium 4 2.4c |
| clock speed:
|
12 x 200 mhz = 2.4 ghz
12 x 260 mhz = 3.12 ghz |
| motherboards: |
abit is7 |
| chipsets: |
i865pe |
| videocard: |
ati radeon 9800 pro (380/680) |
| memory: |
2x 512b corsair twinx1024-4000pro** |
| hard drive:
|
20gb wd 7200 rpm |
| cdrom: |
nec 52x cd-rom |
| floppy: |
panasonic 1.44mb floppy drive |
| heatsink: |
thermalright sk6 w/36cfm delta |
| powersupply: |
pc p&c 510 turbo cool |
| software
setup |
windowsxp build 2600
intel 5.00.1012
catalyst
3.5 |
** - memory was running 3-4-4-8 for all intel
benchmarks!
|
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