tekunogekai Posted February 22, 2005 Share Posted February 22, 2005 As the title suggests, I own an Abit AA8-DuraMAX motherboard and a set of TWIN2X1024-5400C4PRO RAM sticks. On this page (http://www.corsairmemory.com/corsair/products/specs/twin2x1024-5400c4pro.pdf) it reports that my memory is 100% tested at 675 MHz, but I can't seem to get it higher than 600 MHz. I have a Pentium 4 3.2GHz Prescott installed. What measures can I take so that my RAM will function to its fullest potential? I'm not so good with new hardware, so could you please include semi-exact instructions? Thanks for the help! :D: Link to comment Share on other sites More sharing options...
Wired Posted February 22, 2005 Share Posted February 22, 2005 Is it in a 1:1 ratio with the CPU? Can the CPU go that high? Link to comment Share on other sites More sharing options...
tekunogekai Posted February 22, 2005 Author Share Posted February 22, 2005 The highest speed I can get by changing ratios (with PSB800 tagged) is 600 MHz - 75 MHz less than what it is advertised to run smoothly at. Call me anal, but I'd really like to have that extra 75, and I think my motherboard fits into the "High-performance DDR2 motherboards" category as mentioned on the link in my last post. *turns on the Ramguy signal, points it at some clouds* Link to comment Share on other sites More sharing options...
Wired Posted February 23, 2005 Share Posted February 23, 2005 Again, Can the CPU go that high? Link to comment Share on other sites More sharing options...
Yellowbeard Posted February 23, 2005 Share Posted February 23, 2005 I have an AA8 Duramax also with the PC5400 RAM. Keep in mind that your CPU may be the limiting factor here. In the past, the 3.2ghz CPUs would not run the FSB bus anywhere close to 333mhz/DDR667. Are you trying this OC at a 1:1 ratio? What is your DRAM frequency set to? Mike. Link to comment Share on other sites More sharing options...
tekunogekai Posted February 23, 2005 Author Share Posted February 23, 2005 I don't know enough to answer any of your questions. All I can do is take instructions on how to make it perform and do such. That, or if you tell me how to find out what you want to know I'll gladly do so! Link to comment Share on other sites More sharing options...
Wired Posted February 23, 2005 Share Posted February 23, 2005 While your memory can go that high, there's no guarantee your CPU can. specmike having the same memory and board would be able to give you more info than I would be able to on that setup. Link to comment Share on other sites More sharing options...
Yellowbeard Posted February 23, 2005 Share Posted February 23, 2005 I don't know enough to answer any of your questions. All I can do is take instructions on how to make it perform and do such. That, or if you tell me how to find out what you want to know I'll gladly do so! The first step I would try is to set the DRAM Frequency to 533. This setting will allow the memory to run at a faster speed than your CPU. In this case, your CPU cannot run the speed required to operate the RAM at its top speed. Therefore, you use a different speed setting for the memory to make it run faster. In this case, setting DDR533 is actually running the RAM at 266mhz (2 x 266mhz = DDR533) And, your CPU is at 200mhz. So, this is actually a 3:4 ratio. So, let's assume you can get your CPU back to 250mhz. At a 3:4 ratio your RAM would be running at 333.33mhz, or DDR666.66 which is rounded to DDR667. This is why they offer extra RAM settings. Keep in mind that when you are OCing, just because you have 1 very fast component, there is no guarantee that the other components can keep up. In this case, your RAM is much faster than your CPU so it will take some effort to tune the system properly. Mike. Link to comment Share on other sites More sharing options...
tekunogekai Posted February 23, 2005 Author Share Posted February 23, 2005 Well this is a bit silly. I bought the RAM and the CPU at the same time, and I bought the best available in both fields. Ugh. Okay, so I'll try to get my CPU to 250 MHz. Link to comment Share on other sites More sharing options...
Yellowbeard Posted February 23, 2005 Share Posted February 23, 2005 Well this is a bit silly. I bought the RAM and the CPU at the same time, and I bought the best available in both fields. Ugh. Okay, so I'll try to get my CPU to 250 MHz. Well, the main problem is that technology is constantly progressing. And, the different components in your computer do not progress at the same rate. So, if we waited on Intel to catch up with ABIT and Corsair, we would not have the high performance parts we do today. And, if that were true, we could only buy generic RAM and generic MOBOs that all conform exactly to Intel specifications. So personally, I would not call it silly. However, many lessons like this are learned after the purchase is made. But, you have a good chance in my opinion to run your RAM at some speed between 275-333mhz. The limiting factor will likely be how fast your CPU will run reliably. Good luck, Mike. Link to comment Share on other sites More sharing options...
tekunogekai Posted February 24, 2005 Author Share Posted February 24, 2005 Well, what I think is silly is the fact that when the .pdf was posted entailing 675MHz speeds, 3.2's were the fastest CPU's available. Even then they had -JUST- come out. I guess I'm a moron, but it would've been nice to have seen a little box on that .pdf that read: Performance tested at 675MHz! (Note: You won't be able to buy a CPU that will allow the RAM to operate at this frequency for a couple months - The one you just bought is pointless for this.) Link to comment Share on other sites More sharing options...
tekunogekai Posted February 24, 2005 Author Share Posted February 24, 2005 Alright, well I just did a little reasearch and it seems as though I totally gimped myself. I would be able to get the FSB to run at 250 MHz if I could change the multiplier, but multipliers are locked for the 3.2 GHz P4. Abit released a BIOS revision (18) that allows owners of 3.4+ GHz Prescott owners to actually change the multiplier, locked or not. Unfortunately, I had to go with the 3.2. Talk about bad timing... this reminds me of when I bought a 9700 the week before the 9800's were announced, and also of how I bought the AA8 with PCIE 16x only to find out that ATI/Nvidia were going to completely blow past their release dates. *sigh* Thanks for the advice guys and gals - even though I can't get my 675 MHz-tested ram to run at 675 MHz, it's nice to know that you people are out there and willing to help those who potentially can. Link to comment Share on other sites More sharing options...
Yellowbeard Posted February 24, 2005 Share Posted February 24, 2005 I see you have been thru the "buy now, learn later" situation like I have. However, keep in mind that Corsair validates their RAM on systems that are bought retail. They are not special rigs. However, Corsair cannot put up a disclaimer relating to what Intel is or is not going to do with CPUs. But, good luck to you and post again if we can help. Mike. Link to comment Share on other sites More sharing options...
clipperjay Posted March 23, 2005 Share Posted March 23, 2005 You guys have answered most of my quesions I'm in the same boat. I'm getting all or nothing out of my RAM PC5400 is a bit too extreme and the only question I have is that my 570J is kicking at FSB205 @ 3.96GHZ but what I have a problem is that what happens if I start to change multiplier on the bios Stable still needs tweeking 3.5 4 4 4 11 SPD- Too lose.! Set bios to manual 3.5 5 5 5 15 Could someone look at the results of my bench marks and comment on improving my results Want to see the magical 600MHz.????????? Cheers Jay Link to comment Share on other sites More sharing options...
Yellowbeard Posted March 23, 2005 Share Posted March 23, 2005 From what I have tested/seen/heard the PC5400 RAM does not like lowered timings. I'd suggest manually setting them to 4,4,4,12 and setting the Vdimm to 1.95v or 2.0v. With the CPU that you are using you are going to prolly need to run the 3:4 divider with either multi. Mike. Link to comment Share on other sites More sharing options...
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