RAM Mhz compared to a four digit number?
in [Hardware]
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From: Brian V on 23 Jan 2010 18:58 Hi. I am looking at different RAMS to upgrade and pput in my pc. On crucial.com it said I can use: "Each memory slot can hold DDR2 PC2-8500,DDR2 PC2-6400,DDR2 PC2-5300 with a maximum of 1GB per slot". Some RAM I'v looked at uses MHz. Eg: Buffalo 2GB DDR2 667MHz 240-Pin Computer Memory. So, my question is: Can I use the MHz 240-Pin RAM's, or is this a different kind of chip? Ot has the DDR2 and 240-PinI would assume they are the same but how do I understand the DDR2 PC2-8500, 6400 or 5300 numbers in MHz. Is there a conversion? What is the difference in this situation between 8500, 6400 and 5300? I would assume speed or something. I have looked in some stores and most said 5300 and other numbers on the tags, or I found the MHz numbers. I have yet to find any 8500 or 6400. Most people have said a 2GB piece would/may work in the slots if I tried. But I just want to confirm it can. I would trust what Crucial.com says as that site has been highly recommended on this forum to me often.
From: Russ SBITS.Biz [SBS-MVP] on 23 Jan 2010 19:45 Before you fry anymore circuits :) (Teasing you here.) To to http://www.oempcworld.com and check their site you can drill down to your specific Machine it will list exactly what memory chips your computer/mother board will take. Now that you have that knowledge you can compare. Just remember to keep the same SPEED Mhz of each chip for best performance. If you still have questions Report back with what OemPcworld.com says you need and what chips you have and what you want to upgrade to Russ -- Russell Grover - SBITS.Biz [SBS-MVP] Microsoft Gold Certified Partner Microsoft Certified Small Business Specialist 24hr SBS Remote Support - http://www.SBITS.Biz Microsoft Online Services - http://www.microsoft-online-services.com "Brian V" <BrianV(a)discussions.microsoft.com> wrote in message news:00F9C2FD-F16B-447E-B653-3E770783392B(a)microsoft.com... > Hi. I am looking at different RAMS to upgrade and pput in my pc. > > On crucial.com it said I can use: "Each memory slot can hold DDR2 > PC2-8500,DDR2 PC2-6400,DDR2 PC2-5300 with a maximum of 1GB per slot". > > Some RAM I'v looked at uses MHz. Eg: Buffalo 2GB DDR2 667MHz 240-Pin > Computer Memory. > > So, my question is: Can I use the MHz 240-Pin RAM's, or is this a > different > kind of chip? Ot has the DDR2 and 240-PinI would assume they are the same > but > how do I understand the DDR2 PC2-8500, 6400 or 5300 numbers in MHz. Is > there > a conversion? > > What is the difference in this situation between 8500, 6400 and 5300? I > would assume speed or something. I have looked in some stores and most > said > 5300 and other numbers on the tags, or I found the MHz numbers. I have yet > to > find any 8500 or 6400. > > Most people have said a 2GB piece would/may work in the slots if I tried. > But I just want to confirm it can. I would trust what Crucial.com says as > that site has been highly recommended on this forum to me often.
From: Daave on 23 Jan 2010 19:52 Brian V wrote: > Hi. I am looking at different RAMS to upgrade and pput in my pc. > > On crucial.com it said I can use: "Each memory slot can hold DDR2 > PC2-8500,DDR2 PC2-6400,DDR2 PC2-5300 with a maximum of 1GB per slot". > > Some RAM I'v looked at uses MHz. Eg: Buffalo 2GB DDR2 667MHz 240-Pin > Computer Memory. > > So, my question is: Can I use the MHz 240-Pin RAM's, or is this a > different kind of chip? Ot has the DDR2 and 240-PinI would assume > they are the same but how do I understand the DDR2 PC2-8500, 6400 or > 5300 numbers in MHz. Is there a conversion? > > What is the difference in this situation between 8500, 6400 and 5300? > I would assume speed or something. I have looked in some stores and > most said 5300 and other numbers on the tags, or I found the MHz > numbers. I have yet to find any 8500 or 6400. > > Most people have said a 2GB piece would/may work in the slots if I > tried. But I just want to confirm it can. I would trust what > Crucial.com says as that site has been highly recommended on this > forum to me often. What is the make and model of your PC? This article has the information you're looking for: http://en.wikipedia.org/wiki/DDR2_SDRAM You will see that 667MHZ Buffalo RAM is actually a "PC2-5300" module. FWIW, a PC2-8500 module would correspond to 1066MHz (or DDR2-1066). Question: Do you plan on using this PC for Vista or 7? The reason that I ask is that 512MB of RAM is usually enough for most XP users. It's only when someone uses memory-intensive programs (like ones that do image or video editing) that a user needs to use lots of RAM in XP. These methods will help you determine whether or not you currently have enough RAM (the trick is that you don't want to have to rely on your hard drive's pagefile): A quick way to determine if this is happening is to open Task Manager (Ctrl+Alt+Del) and click the Performance tab. Then note the three values under Commit Charge (K): in the lower left-hand corner: Total, Limit, and Peak. The Total figure represents the amount of memory you are using at that very moment. The Peak figure represents the highest amount of memory you used since last bootup. If both these figures are below the value of Physical Memory (K) Total, then you probably have plenty of RAM. In case you want to explore this further, you may run Page File Monitor for Windows XP: http://www.dougknox.com/xp/utils/xp_pagefilemon.htm
From: Ian D on 24 Jan 2010 10:53 "Brian V" <BrianV(a)discussions.microsoft.com> wrote in message news:00F9C2FD-F16B-447E-B653-3E770783392B(a)microsoft.com... > Hi. I am looking at different RAMS to upgrade and pput in my pc. > > On crucial.com it said I can use: "Each memory slot can hold DDR2 > PC2-8500,DDR2 PC2-6400,DDR2 PC2-5300 with a maximum of 1GB per slot". > > Some RAM I'v looked at uses MHz. Eg: Buffalo 2GB DDR2 667MHz 240-Pin > Computer Memory. > > So, my question is: Can I use the MHz 240-Pin RAM's, or is this a > different > kind of chip? Ot has the DDR2 and 240-PinI would assume they are the same > but > how do I understand the DDR2 PC2-8500, 6400 or 5300 numbers in MHz. Is > there > a conversion? > > What is the difference in this situation between 8500, 6400 and 5300? I > would assume speed or something. I have looked in some stores and most > said > 5300 and other numbers on the tags, or I found the MHz numbers. I have yet > to > find any 8500 or 6400. > > Most people have said a 2GB piece would/may work in the slots if I tried. > But I just want to confirm it can. I would trust what Crucial.com says as > that site has been highly recommended on this forum to me often. It's simple. To find the PC2- number for a specific DDR2 RAM speed, just multiply the RAM's MHz speed by 8, and vice versa. The PC number represents the bandwidth, or throughput, in megabytes per second. The memory width is 64 bits, or 8 bytes, so 8 multiplied by the speed gives the bandwidth. For example, 800MHz DDR2 RAM would be PC2-6400. If you see PC3, that indicates DDR3 RAM.
From: Brian V on 25 Jan 2010 23:23
One other thing: I am assuming that the higher numbers means the RAM performs better? Or processes things better? eg: The PC2-8500 it better than the 6400 and 5300. The 6400 is better than the 5300. |