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Memory sticks P4C800E-DeLuxe
Hi all,
Bought 4 256mb FSB-400 sticks (Twinmos dual-channel) for my new mobo, because (if I understood Anandtech correctly) that's the best option. But now I'm confused, because I'm reading other opinions in this ng. Can somebody pleaser shed some light on this? Also, I find the ide options baffling... Got a Samsung sata hd, plus a Maxtor U-ATA, and three CD devices (one DVD reader, one CD writer and a DVD writer). What's the best way to connect all this? My current A7V333 (to be abandoned for continuing probs with the VIA chipset, IDE channels disappearing and usb likewise) took a long time starting up in single-device RAID mode, searching for IDE devices... BTW- This Asus looks very neat, can't wait to install my new Zalman HSF and P4-2.8 (yeah, with heatspreader, so byebye to the Athlons). Cheers Barend |
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"Barend" wrote in message ... Hi all, Bought 4 256mb FSB-400 sticks (Twinmos dual-channel) for my new mobo, because (if I understood Anandtech correctly) that's the best option. But now I'm confused, because I'm reading other opinions in this ng. Can somebody pleaser shed some light on this? No, running 4 sticks is not the best option. Run 2x512MB PC3200 or PC3500 off the QVR list at asus. the link has been posted a few times recently. Also, I find the ide options baffling... Got a Samsung sata hd, plus a Maxtor U-ATA, and three CD devices (one DVD reader, one CD writer and a DVD writer). What's the best way to connect all this? Same way i have mine + an extra hd Primary IDE- Maxtor (master) Primary IDE- DVD-ROM (slave) Secondary IDE-DVD-writer (master) Secondary IDE-CDRW (slave) Tertiary IDE (SATA) - SATA Drive I boot from SATA drive on IDE3-Master BTW- This Asus looks very neat, can't wait to install my new Zalman HSF and P4-2.8 (yeah, with heatspreader, so byebye to the Athlons). Heheh, a convert! glad to hear it. Cheers Barend |
#3
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In article b4gFb.774755$9l5.465260@pd7tw2no, "Philip Callan"
wrote: "Barend" wrote in message ... Hi all, Bought 4 256mb FSB-400 sticks (Twinmos dual-channel) for my new mobo, because (if I understood Anandtech correctly) that's the best option. But now I'm confused, because I'm reading other opinions in this ng. Can somebody pleaser shed some light on this? No, running 4 sticks is not the best option. Run 2x512MB PC3200 or PC3500 off the QVR list at asus. the link has been posted a few times recently. Also, I find the ide options baffling... Got a Samsung sata hd, plus a Maxtor U-ATA, and three CD devices (one DVD reader, one CD writer and a DVD writer). What's the best way to connect all this? Same way i have mine + an extra hd Primary IDE- Maxtor (master) Primary IDE- DVD-ROM (slave) Secondary IDE-DVD-writer (master) Secondary IDE-CDRW (slave) Tertiary IDE (SATA) - SATA Drive I boot from SATA drive on IDE3-Master BTW- This Asus looks very neat, can't wait to install my new Zalman HSF and P4-2.8 (yeah, with heatspreader, so byebye to the Athlons). Heheh, a convert! glad to hear it. Cheers Barend From a performance perspective, the advantage of using four sticks, is it allows more memory banks to be used for "dynamic addressing". So, if you bought 4 x 256 single sided DIMMs versus 2 x 512 double side DIMMs, there would be no memory cycle performance difference. If you bought 4 x 256 double sided DIMMs, then there are twice the number of memory banks for the memory controller to interleave. The "dynamic addressing" option is a subtle one, and probably won't mean a big difference. On the other side of the coin, is the electrical performance issue. Using four double sided sticks causes less optimal signal transmission and I think some people find they have to adjust the memory timing to make the memory work error free. So, if your memory was rated at 2-2-2-6, maybe you end up using 2-3-3-8 or something. This is not a big deal, because some of these memory parameters differences are hidden by pipelining at rates of DDR400 or higher. So, relaxing the timing isn't such a big loss. So, a subtle gain plus a subtle loss equals ???. I think where the biggest potential gain comes from is pure clock speed. Sometimes, using a memory clock faster than DDR400, even if it means relaxing the cycle timings, gives a higher overall bandwidth. "Clock rate is king" when it comes to memory or to the processor core. You should visit the forums of Abxzone.com and discover what the participants there have found. After you've read a thousand posts or so, you'll get a good idea of what brands of memory work well, and what settings to use. Other things you can try, are to bump up the memory voltage slightly. Lower speed DDR is actually specified by the manufacturer to run at 2.5V. The higher performance memories are specified for 2.6V. So, your DIMM voltage should reflect this to start with. No matter what board you buy, sometimes even a bit more Vdimm helps (like 2.7V). Also, be careful with any other aggressive memory settings, like Turbo, as they may give you more negative results than you would expect. For the Intel document on best memory configurations, see: http://developer.intel.com/design/ch...ots/252730.htm Hmm, I just noticed on the last page of the document, that the preferred configuration changes depending on memory speed. That doesn't affect what I just said above, it is just mysterous - it is like one effect is overriding another or something... HTH, Paul |
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