dscheerder Posted December 16, 2004 Share Posted December 16, 2004 What kind of overclocks are people seeing out there for this Mobo + RAM combination? Just curious to see what kind of clocks people are able to push the Corsair RAM to. I'm going to try some overclocking for the first time (with this new rig) this weekend... :biggrin: Link to comment Share on other sites More sharing options...
Siggen7 Posted December 17, 2004 Share Posted December 17, 2004 Have MSI K8N Neo2 MB, A3200+ and Twinx3200C2. The best 100% stabile result I got: 2510MHZ, FSB:251MHZ, 5/6 divider 2,5-3-3-6 1T @2,85V :biggrin: Link to comment Share on other sites More sharing options...
dscheerder Posted December 20, 2004 Author Share Posted December 20, 2004 Almost all the reviews I read suggest better bandwidth with TRas 10, do you happen to know why? Just seems odd getting better performance with TRas 10, instead of TRas 6. Link to comment Share on other sites More sharing options...
raceware Posted December 21, 2004 Share Posted December 21, 2004 10= less cache "misses" due to more time available Link to comment Share on other sites More sharing options...
dscheerder Posted December 21, 2004 Author Share Posted December 21, 2004 Ah, see that does make sense. I knew there was a reason... Link to comment Share on other sites More sharing options...
dscheerder Posted December 23, 2004 Author Share Posted December 23, 2004 Kay, I need suggestions; If I drop the HTT multiplier to 4x, drop the CPU multiplier to 7x, and overclock my RAM, I can get into Windows and through benchmarks at 230MHz FSB (DDR 460MHz I believe), and it'll even make windows desktop at 240MHz, so I take that to mean my RAM should be able to handle if not 460MHz DDR then at least close to it. When I start ramping up my CPU multiplier again, everything goes haywire. I have a 3500+, which is stock 2.2GHz, and it won't even run 2300MHz (230MHz FSB, 10x multiplier, HTT still at 4x). The RAM is running 2.7v, the CPU was running at 1.68v according to CPUz and the BIOS. There are two things I am clueless about though; people talk about ratios in the forums all the time, i.e. 1:1 etc... What does that mean? As well; I have a TV tuner card in my system, which I know is ridiculously sensitive to PCI clock settings, but with a PCI/AGP lock this should be a non-issue, no? Any help would be appreciated. Link to comment Share on other sites More sharing options...
DrCool Posted December 27, 2004 Share Posted December 27, 2004 the A64's are unlike any other processor, the memory controller is actually built into the processor core, and runs at CORE SPEED.. meaning if you have a 1.8GHz processor, running 9x multipler x 200MHz, your memory would have to be running at 1800MHz to run 1:1. There are no memory modules that can run at that speed, so you memory and FSB (HT) must be run asynconously (meaning not at the same rate/speed) the lowest ratio of CPU/DRAM possible with an A64 is CPU:9, so if your processor is running 9x200MHz=1800MHz/9 = 200MHz FSB (DDR400) if your running PC2100 / DDR266 / 133MHz FSB you'd be running at CPU:13. for this very reason, you want to have the fastest memory possible, so you can run at the lowest ratio possible. let's say you can run your A64 @ 300MHz FSB, with a multipler of 9x (ie 2.7GHz or 2700MHz), well in order to run CPU:9, your memory would have to be capable of DDR600, or 300MHz FSB.. that memory doesn't even exsist.. so in order to run your processor at that speed, you need to change the CPU FSB to MEMORY FSB ratio.. The MSI boards allow your to change this ratio. They don't call it ratio though. It's under the advanced memory options, where you can select (Auto, 133, 166, 200) those are RATIOs (auto / cpu:13 / cpu:11 / cpu:9) even though they don't directly state that. so if you have your A64 @ 300MHz FSB and your memory set at 166 (CPU:11 ratio), then your memory will be running at 9x300=2700/11 = 245MHz FSB which is possible with DDR500 memory modules Link to comment Share on other sites More sharing options...
dscheerder Posted December 28, 2004 Author Share Posted December 28, 2004 Dude, it's like you turned a light on in my head. I understand now. Thanks! :D: Link to comment Share on other sites More sharing options...
Wired Posted December 28, 2004 Share Posted December 28, 2004 Dr. Cool, great explanation! If you ever write an Athlon64 OC guide, or an even more detailed explanation of the above post, feel free to post it in the Tips and Tricks section! Link to comment Share on other sites More sharing options...
DrCool Posted December 28, 2004 Share Posted December 28, 2004 no problem guys.. I'm just glad I was able to help you better understand how it works. and I might just take you up on that offer wired ;): Link to comment Share on other sites More sharing options...
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