hakgipc Posted August 23, 2006 Share Posted August 23, 2006 ok let me get this straight.... ddr pc3200 is said to run at 200 mhz each stick i fi have 2 does that mean thioretically im running a clock speed of 400mhz in ram.. also ddr2 pc8000 is said to run at 1ghz is that each stick plz explain im confused :?: Quote Link to comment Share on other sites More sharing options...
stingwray Posted August 23, 2006 Share Posted August 23, 2006 PC3200 = 400MHz PC4000 = 500MHz PC5400 = 667MHz PC6400 = 800MHz etc, You can basically divide the PC number by 8 to get a rough speed in MHz. But seeming you didn't actually ask a question I can't say more than that. Quote Link to comment Share on other sites More sharing options...
hakgipc Posted August 23, 2006 Author Share Posted August 23, 2006 is that all under ddr Quote Link to comment Share on other sites More sharing options...
moonlit Posted August 23, 2006 Share Posted August 23, 2006 I believe anything above PC133 is DDR (or DDR2), yeah... Quote Link to comment Share on other sites More sharing options...
Sparda Posted August 23, 2006 Share Posted August 23, 2006 http://en.wikipedia.org/wiki/DDR_SDRAM http://en.wikipedia.org/wiki/DDR2_SDRAM I think that just about covers it Quote Link to comment Share on other sites More sharing options...
hakgipc Posted August 23, 2006 Author Share Posted August 23, 2006 * PC2-3200: DDR2-SDRAM memory stick specified to run at 200 MHz using DDR2-400 chips, 3.200 GB/s bandwidth * PC2-4200: DDR2-SDRAM memory stick specified to run at 266 MHz using DDR2-533 chips, 4.267 GB/s bandwidth * PC2-5300: DDR2-SDRAM memory stick specified to run at 333 MHz using DDR2-667 chips, 5.333 GB/s bandwidth1 * PC2-6400: DDR2-SDRAM memory stick specified to run at 400 MHz using DDR2-800 chips, 6.400 GB/s bandwidth ok where it says pc2-3200 so i see from here that its fsb runs at 200mhz and the ram clock spead itself it at 400mhz corect me if im wrong and i dont understand bandwidth thing Quote Link to comment Share on other sites More sharing options...
stingwray Posted August 23, 2006 Share Posted August 23, 2006 FSB is only related to Intel CPUs now, as AMD don't have a FSB technically because the memory controller is on the CPU die. Bandwidth is how much raw data you can transfer in and out of the memory. Like most things greater is better. Except for latencies, but please don't ask about latencies because you don't even understand this. Quote Link to comment Share on other sites More sharing options...
l0gic Posted August 23, 2006 Share Posted August 23, 2006 ok where it says pc2-3200 so i see from here that its fsb runs at 200mhz and the ram clock spead itself it at 400mhz corect me if im wrong and i dont understand bandwidth thing No, you don't add the frequencies, they just have to match. Bandwidth measures the amount of data you can transfer -- this does not change unless you upgrade all of the memory modules to a higher frequency. For example: One 512MB PC2-4200 stick provides for 4.267 GB/s transfer, and 512MB of storage. Two 512MB PC2-4200 sticks provide for 4.267 GB/s transfer, and 1GB of storage. Quote Link to comment Share on other sites More sharing options...
Sparda Posted August 23, 2006 Share Posted August 23, 2006 Two 512MB PC2-4200 sticks provide for 4.267 GB/s transfer, and 1GB of storage. That is unless you are running them in dule channle mode, where it's theoreticly double that Quote Link to comment Share on other sites More sharing options...
hakgipc Posted August 23, 2006 Author Share Posted August 23, 2006 so say ddr400 is that 400mhz clock speed Quote Link to comment Share on other sites More sharing options...
hakgipc Posted August 23, 2006 Author Share Posted August 23, 2006 ok i have pc3200 ddr400 but in cpu-z under memory it say pc3200 (200mhz) why isnt it suposed to be 400mhz Quote Link to comment Share on other sites More sharing options...
Sparda Posted August 24, 2006 Share Posted August 24, 2006 DDR stand for double data rate, in standard SDRAM data is only exchanged from the CPU to the memory once per tick, with DDR it is twice per tick. So what ever clock speed the memory is running at, the motherboard is using double that, theoreticly. Quote Link to comment Share on other sites More sharing options...
hakgipc Posted August 24, 2006 Author Share Posted August 24, 2006 ohh so it says in cpu z 200 ok so i double that to get the real spead yes Quote Link to comment Share on other sites More sharing options...
Sparda Posted August 24, 2006 Share Posted August 24, 2006 Wait a minuet... take a screen shot of CPU-Z and post it here, that way we compleatly avoid any confusion. Quote Link to comment Share on other sites More sharing options...
hakgipc Posted August 24, 2006 Author Share Posted August 24, 2006 there u have 210(should be liek 400 cause ddr400) fsb on ram but my cpu fsb is 220 dosnt it have 2 be same Quote Link to comment Share on other sites More sharing options...
Sparda Posted August 24, 2006 Share Posted August 24, 2006 Ye, thats right, thats the internal clockspeed of the RAM, now becasue data is transfered twice per memory internal clock tick, the motherboards RAM BUS clock has to be double what ever the RAMs internal clock speed is. Quote Link to comment Share on other sites More sharing options...
Mr Andrewson Posted August 24, 2006 Share Posted August 24, 2006 I'm no pro but you knoow it says "Dual" that could mean you have 2 ram sticks at 210ghz which means you have 420ghz but it only shows the stats of one ram stick? Quote Link to comment Share on other sites More sharing options...
Mr Andrewson Posted August 24, 2006 Share Posted August 24, 2006 where is cpu-z anyways i can't find it :( Quote Link to comment Share on other sites More sharing options...
Mr Andrewson Posted August 24, 2006 Share Posted August 24, 2006 and i am dumb i know ;) Quote Link to comment Share on other sites More sharing options...
moonlit Posted August 24, 2006 Share Posted August 24, 2006 I'm no pro but you knoow it says "Dual" that could mean you have 2 ram sticks at 210ghz which means you have 420ghz but it only shows the stats of one ram stick? Holy shit, we've hit those speeds already? Gimme your computer! ;) Quote Link to comment Share on other sites More sharing options...
Mr Andrewson Posted August 24, 2006 Share Posted August 24, 2006 Sorry i meant mhz or did i :?: Quote Link to comment Share on other sites More sharing options...
Mr Andrewson Posted August 24, 2006 Share Posted August 24, 2006 Where is cpu z? Quote Link to comment Share on other sites More sharing options...
moonlit Posted August 24, 2006 Share Posted August 24, 2006 1. Try Google. You can't possibly fail to find it. 2. Stop posting so many messages, use the Edit button in the top right of each of your posts. Quote Link to comment Share on other sites More sharing options...
cooper Posted August 24, 2006 Share Posted August 24, 2006 He's trying for Melodic's postcount ;) Quote Link to comment Share on other sites More sharing options...
moonlit Posted August 24, 2006 Share Posted August 24, 2006 Good luck with that then, he's nowhere near it ;) Quote Link to comment Share on other sites More sharing options...
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