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Corsair XMS Twinx opinions?

Smartazz

Diamond Member
I'm looking into getting Corsair XMS Twinx and I need to be able to overclock an opteron 165 to around 2.4-2.6GHZ, would this ram get the job done, I'll overvolt it if needed, personal opinions welcome, thanks.
Link: Newegg.com
 
I've got the (2x1GB) 3500LLPro stuff. No problems in my case with overclocking into that region. Its rated for 219MHz at 2-3-2-6 timings with 1T command rate. I've *scoured* the web for reviews of this RAM, and most are very favourable - though some use flawed methods (specifically, they use too much voltage, and this RAM only like about 2.65 to 2.75 volts, regardless of speed). My ram is running 250Mhz (FSB is 250, with 1:1 divider) and is memtest1.65+ stable for 8 hours. To reach 250Mhz, you'll have to loosen the timings a bit - mine's at 2.5-3-3-7 1T, though I used to run it at 2.5-3-2-6 1T (250Mhz) without problems (also memtest stable). From my readings, the ram can be pushed to about 260-265 at 2.5 CAS latency, before you'd have to loosen timings some more. From there, the highest clock this RAM will do is around 280Mhz (!!!), with timings of 3-4-4-8 (or maybe 3-3-3-8), and again 1T command rate.
Using a 9x multiplier of an Opteron 165, to reach 2.5 Ghz, you're going to need a FSB of 277...at that speed, the 3500LL will barely fill your need. $239 CDN at NCIX right now.
(I guess that's my way of saying I'd buy it again...but you might want to pick up the DDR4000 version of this ram)
-Adrian
 
Originally posted by: keldog7
I've got the (2x1GB) 3500LLPro stuff. No problems in my case with overclocking into that region. Its rated for 219MHz at 2-3-2-6 timings with 1T command rate. I've *scoured* the web for reviews of this RAM, and most are very favourable - though some use flawed methods (specifically, they use too much voltage, and this RAM only like about 2.65 to 2.75 volts, regardless of speed). My ram is running 250Mhz (FSB is 250, with 1:1 divider) and is memtest1.65+ stable for 8 hours. To reach 250Mhz, you'll have to loosen the timings a bit - mine's at 2.5-3-3-7 1T, though I used to run it at 2.5-3-2-6 1T (250Mhz) without problems (also memtest stable). From my readings, the ram can be pushed to about 260-265 at 2.5 CAS latency, before you'd have to loosen timings some more. From there, the highest clock this RAM will do is around 280Mhz (!!!), with timings of 3-4-4-8 (or maybe 3-3-3-8), and again 1T command rate.
Using a 9x multiplier of an Opteron 165, to reach 2.5 Ghz, you're going to need a FSB of 277...at that speed, the 3500LL will barely fill your need. $239 CDN at NCIX right now.
(I guess that's my way of saying I'd buy it again...but you might want to pick up the DDR4000 version of this ram)
-Adrian

Could I use PC3500 ram with the Asus A8N-SLI?
 
I don't see why not...
I have an A8N-SLI, and in all fairness, I never tried it in that board (using the 3500LL in my A8N32SLI instead...). Just the same, you'll be overclocking manually. Corsair and Asus work together, and the 3500LL is [usually] just binned Infineon BE-5 parts...should work fine. But again, if you really want a 277Mhz FSB, maybe you should look at:
Corsair Twinx2048-4000PT
reviews at:
http://www.techfear.com/articles/2006/1/corsair_twinx2048-4000pt.shtml
http://www.velocityreviews.com/reviews/Corsair_TWINX2048-4000PT/4/
and perhaps more relevant in your case:
http://www.legitreviews.com/article/269/1/
 
If you're worried about the ram not doing it's job when overclocking, what you should do is first figure out how fast your FSB will be and then purchase your ram accordingly. Unless you found those modules on a reviewers website saying they overclock to 300mhz, don't get them. So if you overclock your CPU to 250MHZ FSB when running your ram ASYNC, then your best bet would be to get PC4000 memory modules.
 
Originally posted by: goku
If you're worried about the ram not doing it's job when overclocking, what you should do is first figure out how fast your FSB will be and then purchase your ram accordingly. Unless you found those modules on a reviewers website saying they overclock to 300mhz, don't get them. So if you overclock your CPU to 250MHZ FSB when running your ram ASYNC, then your best bet would be to get PC4000 memory modules.

How much should I expect to spend on it?
 
Originally posted by: goku
If you're worried about the ram not doing it's job when overclocking, what you should do is first figure out how fast your FSB will be and then purchase your ram accordingly. Unless you found those modules on a reviewers website saying they overclock to 300mhz, don't get them. So if you overclock your CPU to 250MHZ FSB when running your ram ASYNC, then your best bet would be to get PC4000 memory modules.

I don't understand the concept of how getting faster memory helps with overclocking, wouldn't it have less overclocking headroom?
edit: Is it because the ram lowers its clocks to fit your motherboard, but can get back up to those speeds with some extra overclocking?
 
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