Corsair Employee RAM GUY Posted May 5, 2008 Corsair Employee Share Posted May 5, 2008 NP Please let us know how you make out! Link to comment Share on other sites More sharing options...
SandmanXL Posted September 10, 2008 Share Posted September 10, 2008 Hi, I hope someone is still reading this thread... I have the same problems with 4x1 gb xms2 PC6400 C4 and the P5n-e SL mobo. Also I have read the suggested thread and did some overclocking These are my settings : memory @ 698,2 mhz / FSB @ 1280 mhz => stable for now Is it correct to say that this results in : (698,2x1280)/1066 ~= 838,3 MHZ DRAM? Cheers. Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted September 10, 2008 Corsair Employee Share Posted September 10, 2008 Looks right if the system is stable at those settings you should be good to go! Link to comment Share on other sites More sharing options...
Peter Satera Posted October 18, 2008 Share Posted October 18, 2008 Hi there, I signed up purely because of this thread, because it seems like many people (not only here) are having massive problems with upgrading in RAM with this mobo. Im far from an expert in these sorta things I know the basics really. I would really like to upgrade in RAM from the two single 1GB DDR2-800 sticks to full blown 4 Gig. I haven't tried putting in 4 gig yet but I'd really like to know what would be the best solution to upgrade. I dont mind going and buying 2x2Gig. Is there a major difference in 667 to 800? I also read about that not matter what I add I will only get 3.3Gig out of it or is this just Vista? Im running XP 32bit Pro and have been needing the extra memory for a while now. So i really could do with some help for a n00b. :biggrin: Link to comment Share on other sites More sharing options...
DerekT Posted October 18, 2008 Share Posted October 18, 2008 Hi there, I signed up purely because of this thread, because it seems like many people (not only here) are having massive problems with upgrading in RAM with this mobo. It is not this board. This issue is across the board (no pun intended) with both Intel and AMD. When one populated a board with two DRAM modules there is a load on the Memory Controller (Northbridge). Now naturally, that load increases when you double the modules and slot population. For that reason, the Memory Controller has a hard time keeping up at the full speed of a 2 DRAM module kit. It is advised to drop the bandwidth and raise the voltage of the Northbridge to accept the extra load. Im far from an expert in these sorta things I know the basics really. I would really like to upgrade in RAM from the two single 1GB DDR2-800 sticks to full blown 4 Gig. I haven't tried putting in 4 gig yet but I'd really like to know what would be the best solution to upgrade. I dont mind going and buying 2x2Gig. Is there a major difference in 667 to 800? In benchmarks, yes. In reality, with a Core 2 Duo processor, the differentiation is ~3 -5 percent. In other words, theoretical bandwidth increases but the reality is far smaller. However, I advise a move to 2 X 2048 as this allows not only full speed, but is far more gentle with the Memory Controller and I am nice to my hardware. :D: I also read about that not matter what I add I will only get 3.3Gig out of it or is this just Vista? Im running XP 32bit Pro and have been needing the extra memory for a while now. So i really could do with some help for a n00b. Your computer has many methods in which to use memory. There are memory storage and caches all over the motherboard. These devices contain some of the below method of storage: * RAM * ROM * Cache * Dynamic RAM * Static RAM * Flash memory * Virtual memory * Video memory * BIOSFor example, your sound, video, keyboard, chipset caches, I/O controller (IDE, SATA, etc) caches . . . Now these device with discrete and cache RAM need to have their "Addresses" so that the computer knows where they are in order to query and access them. You computer also has System Resource Memory. Consider this as an index of addresses that tell the computer where everything is for access as mentioned above. The computer needs to know that a certain boundary of addresses will contain certain functions to perform when commanded. Memory-mapped devices (such as your video card) will use some of that physical address space, as will the BIOS ROMs. After all the non-memory devices have had their say, there will be less than 4GB of address space available for RAM below the 4GB physical address boundary. Now a 32bit Operating system such as Windows XP 32bit and VISTA 32bit have the ability to access 2^32 bits = 4GB. Now if you have an 8800GTX with 768MB of DRAM, then that memory must be addressed in the space of the 4GB and you lose some of the system dram to the addressing. This continues with all other devices, leaving you with less than the 4GB. Since Windows can address up to 4GB, then with 3GB, there will be the 3 --> 4GB mapping so you should not lose that DRAM with 3GB unless your devices demand it. For example, SLi with 2 X 8800GTX 768MB will certainly take away from the 3GB. Hope this helps to clarify things a bit. Link to comment Share on other sites More sharing options...
Peter Satera Posted October 20, 2008 Share Posted October 20, 2008 Ahhh. I get you! Thanks so much! I had no idea that the memory on my graphics card had to be addressed like that. That clears up plenty! On that note I think I will probably get a 2gig kit then, (CORSAIR XMS CL5 2X 2GB DUAL CHANNEL KIT 6400) What about the latency? All this 5-5-5-18 and 4-4-4-12. Sorry for plucking your brain, you explain it much better than any motherboard manual. Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted October 20, 2008 Corsair Employee Share Posted October 20, 2008 The settings will depend on the specific part you get IE Twin2x4096-6400C5DHX Cas 5-5-5-18 at 1.8 Volts. Twin2x4096-6400C4DHX Cas 4-4-4-12 at 2.1 Volts Link to comment Share on other sites More sharing options...
Peter Satera Posted October 20, 2008 Share Posted October 20, 2008 So is there a specific type I should get? Basically Im looking at this and going, which one would be the best to stick in two slots and work. would both C4 and C5 work? http://www.corsair.com/products/xms2.aspx It used to be so much simpler. Variations of ram and speed have excelled insanely. Link to comment Share on other sites More sharing options...
DerekT Posted October 21, 2008 Share Posted October 21, 2008 Both will work just fine. With your board, I would go with the CL5 personally. Better plug and play compatibility. Link to comment Share on other sites More sharing options...
Peter Satera Posted October 21, 2008 Share Posted October 21, 2008 Alright! Thanks for help you guys! Much appreciated! In a most recent look about I'll probably purchase TWIN2X4096-6400C5. By reading it its a matched pair of 2GB sticks. You can get them from amazon for £50, which is quite a good bargain. Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted October 21, 2008 Corsair Employee Share Posted October 21, 2008 With two modules yes you should be able to run them at full speed. So get one 4 Gig set of modules for best performance. Link to comment Share on other sites More sharing options...
Peter Satera Posted October 22, 2008 Share Posted October 22, 2008 Alright, Thanks again. Sorry for being such a n00b. :laughing: Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted October 23, 2008 Corsair Employee Share Posted October 23, 2008 The only way to run full speed DDR800 with that MB would be with one of our Twin2x4096-6400C4DHX sets of modules if you cannot get the 4 you have rnning at DDR800 with the settings I have posted IE: 2.1 Volts with the NB/MCH/SPP Voltage set to +.2 Volts. Or try over clocking the CPU with the memory set to DDR667. Link to comment Share on other sites More sharing options...
Peter Satera Posted October 24, 2008 Share Posted October 24, 2008 Alright, I havent tried yet putting my 4 gig in, still waiting for it to arrive. To make sure I get better compatibility im upgrading to xp64. Im hoping that it should run without dropping down to 667, especially since its only 2x2gig sticks. What is better though? Running 2GBx2 sticks at 800mhz, or running 4x2GB sticks at 667Mhz? I read here a guy upgraded to 8 gig ram but had to drop to 667. Is it worth getting the extra ram and dropping to 667? Im trying to get the best out my pc as I do 3D animation. Link to comment Share on other sites More sharing options...
Ranger099 Posted October 30, 2008 Share Posted October 30, 2008 Having the same problem with 4 sticks of TWIN2x4096-6400C5. Vista 64-bit, can't boot with 4 sticks 5-5-5-18 800. Works fine with 2 sticks. Will try to clock RAM @ 667 (is that correct? Same solution as the smaller sticks of RAM?). UPDATE: Running fine @ 667. Still would like to hit 800. I guess I'll try to push the processor clock to 1280 or so. Link to comment Share on other sites More sharing options...
stunriver Posted February 14, 2010 Share Posted February 14, 2010 Hi I need to understand something, when you meant 667 MHZ does it mean the FSB for the Mem or the QDR? I dont understand those 2 differences, I put 1600 for QDR and 800 for Mem and I do sync mode. I need to know those 2 differences please Link to comment Share on other sites More sharing options...
stunriver Posted February 14, 2010 Share Posted February 14, 2010 P5N-E is running my 4gb of memory at 800 (1:1) unlinked with the E6750 oc to 3.2 My cpu is the C2d 6750 Another thing that I dont udnerstand what is that "C2d 6750" and "E6750" means which setting is that or how do you added up things to 6750? what is that "oc to 3.2" means? Link to comment Share on other sites More sharing options...
Wired Posted February 14, 2010 Share Posted February 14, 2010 E6750 isn't a speed, it's a model number of your CPU. OC to 3.2 means he's overclocked his CPU to 3.2 GHz. Also, your post and your specs have different CPUs. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.